Georgia Weatherization Assistance Program Manufactured Housing Field Guide - February 2019 Standard Work Specifications Field Guide for Manufactured Housing created by Georgia Environmental Finance Authority GA Wx Field Guide Georgia Environmental Finance Authority 2 of 486 February 06, 2019 Summary The Georgia Weatherization Assistance Program (WAP) Manufactured Housing Field Guide was developed to align with the U.S. Department of Energy (DOE) Standard Work Specifications (SWS) for Manufactured Housing Energy Upgrades and to support and promote high quality work. This guide was created through a collaborative effort between Southface Energy Institute, Santa Fe Community College, and other participating DOE Weatherization Training Centers. It includes text and photo guides to assist Retrofit Installer Technicians, Crew Leaders, Energy Auditors, and Quality Control Inspectors with effectively performing the tasks required by the WAP. All sections in this Field Guide follow the requirements set forth by the SWS. All tasks and methods outlined in this Field Guide define measure installation and diagnostic testing best practices that should be followed throughout the state. Codes and Standards While the SWS and Georgia Weatherization Manufactured Housing Field Guide will help identify the desired outcomes of energy efficiency measures in a weatherization or home energy upgrade project, they are not a replacement for the codes and/or technical standards mandated by a particular jurisdiction. State, local, or municipal code or ordinance has legal precedence and users should obtain copies of the applicable codes and standards for their jurisdiction before performing the work. GA Wx Field Guide Georgia Environmental Finance Authority 3 of 486 February 06, 2019 Table of Contents 2 Health and Safety 2.01 Safe Work Practices 2.0100 Safe Work Practices 2.0100.1 Global Worker Safety 2.0100.1b Hand protection ................................................................................................................ 18 2.0100.1c Respiratory protection ...................................................................................................... 20 2.0100.1h Power tool safety .............................................................................................................. 22 2.0100.1j Ergonomic safety.............................................................................................................. 24 2.0101 Air Sealing 2.0101.1 Air Sealing Worker Safety 2.0101.1a Worker safety ................................................................................................................... 25 2.0101.1b Moisture precautions for crawl spaces and basements ................................................... 26 2.0101.1c Moisture precautions: living space ................................................................................... 27 2.0101.1d Moisture precautions for exterior water ............................................................................ 28 2.0102 Insulation 2.0102.1 Insulation Worker Safety 2.0102.1a Worker safety ................................................................................................................... 29 2.0102.1b Asbestos containing materials (ACM) .............................................................................. 30 2.0102.1c Materials ........................................................................................................................... 32 2.0102.1d Lead paint assessment .................................................................................................... 33 2.0103 Heating and Cooling Equipment 2.0103.2 Heating and Cooling Worker Safety 2.0103.2b Mercury............................................................................................................................. 34 2.0103.2c Asbestos........................................................................................................................... 35 2.0103.2d Personal protective equipment (PPE) .............................................................................. 36 2.0103.2e Combustible gas detection ............................................................................................... 38 2.0103.2f Carbon monoxide (CO) .................................................................................................... 40 2.0105 Baseload 2.0105.1 Baseload Worker Safety 2.0105.1a Worker safety ................................................................................................................... 41 2.0105.2 Licensed Electrical Professional 2.0105.2a Worker safety ................................................................................................................... 42 2.0106 Material Safety 2.0106.1 Material Selection, Labeling, and Material Safety Data Sheets (MSDSs) 2.0106.1a Material selection ............................................................................................................. 43 2.0106.1b Material labels .................................................................................................................. 44 2.0106.1c Material Safety Data Sheets (MSDSs) ............................................................................. 45 2.0107 Basements and Crawl Spaces 2.0107.5 Prework Qualifications (Home Installation) 2.0107.5a Installation deficiencies .................................................................................................... 46 GA Wx Field Guide Georgia Environmental Finance Authority 4 of 486 February 06, 2019 Table of Contents 2.02 Combustion Safety 2.0201 Combustion Safety General 2.0201.1 Combustion Appliance Zone (CAZ) Testing 2.0201.1a Assessment ...................................................................................................................... 48 2.0201.1b Fuel leak detection ........................................................................................................... 49 2.0201.1d Base pressure test ........................................................................................................... 50 2.0201.1e Depressurization test........................................................................................................ 51 2.0201.2 Combustion Safety - Make-up Air 2.0201.2a Outside combustion make-up air...................................................................................... 52 2.0201.2b New appliances ................................................................................................................ 53 2.0201.2c CO detection and warning equipment .............................................................................. 54 2.0201.2d Gas ovens ........................................................................................................................ 55 2.0201.2e Gas range burners ........................................................................................................... 56 2.0201.2f Solid fuel burning appliances ........................................................................................... 57 2.0201.3 Vented Combustion Appliance Safety Testing 2.0201.3a Spillage Test..................................................................................................................... 58 2.0201.3b Carbon monoxide (CO) test in appliance vent ................................................................. 60 2.0201.3c Final test out ..................................................................................................................... 61 2.0202 Unvented Space Heaters 2.0202.1 Unvented Space Heaters: Propane, Natural Gas, and Kerosene Heaters 2.0202.1a Removal ........................................................................................................................... 63 2.0202.1b Occupant education ......................................................................................................... 64 2.0203 Vented Gas Appliances 2.0203.1 Combustion Air for Natural Draft Appliances 2.0203.1a Required combustion air .................................................................................................. 65 2.0203.1b Additional combustion air (if action is required)................................................................ 67 2.0203.1c Spillage testing ................................................................................................................. 69 2.0203.2 Combustion Flue Gas--Orphaned Water Heaters 2.0203.2d Required combustion air .................................................................................................. 71 2.0203.2e Additional combustion air (if action is required)................................................................ 72 2.0203.4 Occupant Education 2.0203.4a Occupant health and safety.............................................................................................. 74 2.0203.4b Occupant education ......................................................................................................... 75 2.0204 Isolation 2.0204.1 Isolating Combustion Water Heater Closet 2.0204.1d Post-work testing/verification............................................................................................ 76 2.03 Safety Devices 2.0301 Combustion Safety Devices 2.0301.1 Smoke Alarm 2.0301.1a Smoke alarm (hardwired) ................................................................................................. 78 2.0301.1b Smoke alarm (battery operated)....................................................................................... 79 2.0301.2 Carbon Monoxide Alarm or Monitor 2.0301.2b CO detection and warning equipment (battery operated) ................................................ 80 GA Wx Field Guide Georgia Environmental Finance Authority 5 of 486 February 06, 2019 Table of Contents 2.04 Moisture 2.0401 Air Sealing 2.0401.1 Air Sealing Moisture Precautions 2.0401.1a Moisture precautions for attics ......................................................................................... 81 2.0401.1b Moisture precautions for crawl spaces ............................................................................. 82 2.0401.1c Moisture precautions for the living space ......................................................................... 83 2.0401.1d Moisture precautions for exterior water ............................................................................ 84 2.0402 Drainage 2.0402.1 Drainage 2.0402.1a Work assessment ............................................................................................................. 85 2.0402.1c Occupant education ......................................................................................................... 86 2.0403 Vapor Barriers 2.0403.4 Pier and Skirting Foundations--Ground Moisture Barriers 2.0403.4a Coverage .......................................................................................................................... 87 2.0403.4b Material specification ........................................................................................................ 89 2.05 Radon 2.0501 Air Sealing 2.0501.2 Pier and Skirting Foundation--Venting 2.0501.2b Occupant education ......................................................................................................... 91 2.06 Electrical 2.0602 Electric Hazards 2.0602.1 Static Electric Shock 2.0602.1a Rigid fill tube ..................................................................................................................... 93 2.0602.1b Metal coupler grounding ................................................................................................... 94 2.0602.2 House Current Electric Hazard 2.0602.2c Electrical tool safety ......................................................................................................... 95 2.0602.2d Aluminum wiring ............................................................................................................... 97 2.07 Occupant Education and Access 2.0702 Installed Equipment 2.0702.1 Warranty and Service Agreement 2.0702.1a Warranty ........................................................................................................................... 99 2.0702.1b Warranty and Maintenance Agreement - Client Education ............................................ 100 2.0702.1c General conditions ......................................................................................................... 101 3 Air Sealing 3.10 Attics 3.1001 Penetrations and Chases 3.1001.4 General Penetrations (Electrical, HVAC, Plumbing, Vent Termination, Recessed Lighting) 3.1001.4b Air sealing penetrations .................................................................................................. 102 3.1001.4c Sealant selection ............................................................................................................ 104 GA Wx Field Guide Georgia Environmental Finance Authority 6 of 486 February 06, 2019 Table of Contents 3.1001.4d Ceiling hole repair .......................................................................................................... 106 3.1001.4e Materials ......................................................................................................................... 109 3.1001.4f High temperature application ......................................................................................... 111 3.11 Walls 3.1101 Manufactured Housing Walls 3.1101.1 Exterior Holes and Penetrations 3.1101.1b Materials ......................................................................................................................... 113 3.1101.2 Interior Holes and Penetrations 3.1101.2b Interior wall air sealing.................................................................................................... 115 3.1101.3 Holes, Penetrations, and Marriage Line 3.1101.3c Marriage line air sealing ................................................................................................. 117 3.12 Windows and Doors 3.1201 Maintenance, Repair, and Sealing 3.1201.5 Manufactured Housing Windows and Doors 3.1201.5b Lead paint assessment .................................................................................................. 119 3.1201.5d Air infiltration................................................................................................................... 122 3.1201.6 Interior Storm Windows 3.1201.6b Fixed storm window........................................................................................................ 124 3.1202 Repairing/Replacing Cracked and Broken Glass 3.1202.3 Replacing Damaged Window Glass in Manufactured Housing 3.1202.3b Lead paint assessment .................................................................................................. 125 3.1203 Replacement 3.1203.3 Replacement of Manufactured Housing Windows and Doors 3.1203.3b Lead paint assessment .................................................................................................. 126 3.1203.3f Safety ............................................................................................................................. 127 3.13 Floors 3.1301 Penetrations 3.1301.1 Electrical, HVAC, Plumbing, Gas, Dryer Vent, and General Penetrations Through Bottom Board 3.1301.1d Bottom board penetrations ............................................................................................. 128 3.1301.2 Electrical, HVAC, Plumbing, Gas, Dryer Vent, and General Penetrations Through Flooring 3.1301.2b Floor air sealing (decking, subfloor, floor decking) ......................................................... 130 3.1301.2c Sealant selection ............................................................................................................ 132 3.1301.2d Floor repair ..................................................................................................................... 134 3.1301.2f High temperature application ......................................................................................... 137 3.1302 Floor Framing 3.1302.1 Floor Framing--Bay Window 3.1302.1b Lead paint assessment .................................................................................................. 139 GA Wx Field Guide Georgia Environmental Finance Authority 7 of 486 February 06, 2019 Table of Contents 3.14 Basements and Crawl Spaces 3.1488 Special Considerations 3.1488.2 Skirting Manufactured Homes 3.1488.2a Work assessment ........................................................................................................... 141 3.1488.2b Repair and installation .................................................................................................... 142 3.1488.2c Venting ........................................................................................................................... 143 3.1488.2f Materials ......................................................................................................................... 144 3.1488.2g Fasteners........................................................................................................................ 145 3.1488.2h Structural ........................................................................................................................ 146 3.1488.2i Skirting stiffener/high wind support ................................................................................ 147 3.1488.2j Occupant education ....................................................................................................... 148 3.16 Ducts 3.1601 Duct Preparation 3.1601.4 Support for Horizontal, Suspended Ducts 3.1601.4a Support (applies to all duct types) .................................................................................. 149 3.1601.5 Preparation and Mechanical Fastening 3.1601.5e Duct board to flexible duct .............................................................................................. 150 3.1601.5f Duct board plenum to air handler cabinet ...................................................................... 153 3.1601.5h Boot to gypsum .............................................................................................................. 155 3.1601.5i Duct board to flex ........................................................................................................... 157 3.1602 Duct Sealing 3.1602.3 Proprietary Spray Application 3.1602.3a Internal or external application ....................................................................................... 159 3.1602.8 Supply Plenum (Furnace to Trunk Duct Connection) in Both Upflow and Downflow Air Handler Configurations 3.1602.8b Preparation ..................................................................................................................... 160 3.1602.8c Plenum rebuild or repair ................................................................................................. 162 3.1602.9 Crossover Ducts 3.1602.9g Combustion Appliance Zone (CAZ) testing .................................................................... 164 3.1602.10 Hard and Flex Branch Ducts 3.1602.10e Combustion Appliance Zone (CAZ) testing .................................................................... 165 3.1602.11 Air Sealing System 3.1602.11a New component to new component sealant selection ................................................... 166 3.1602.11c Existing component to existing component .................................................................... 168 3.1602.12 Air Sealing System Components 3.1602.12a Duct boot to interior surface ........................................................................................... 170 3.1602.12b Air handler cabinet outside conditioned space ............................................................... 172 3.1602.13 Return--Framed Platform 3.1602.13a Preparation ..................................................................................................................... 174 3.1602.13b Infill and backing............................................................................................................. 175 3.1602.13c Sealant selection ............................................................................................................ 177 GA Wx Field Guide Georgia Environmental Finance Authority 8 of 486 February 06, 2019 Table of Contents 3.17 Additions 3.1701 Attached Additions 3.1701.1 Holes, Penetrations, and Connection Seam 3.1701.1g Sealant selection ............................................................................................................ 179 3.1701.1h Floor repair ..................................................................................................................... 181 3.1701.1j Ceiling hole repair .......................................................................................................... 182 3.1701.1k High temperature application ......................................................................................... 185 4 Insulation 4.10 Attics 4.1002 Above Roof Deck Insulation 4.1002.1 Above Roof Deck Insulation: Preparation 4.1002.1b Roof covering replacement ............................................................................................ 187 4.1002.2 Above Deck Roof Deck Insulation: Installation 4.1002.2a Sealing ........................................................................................................................... 188 4.1002.2b Installation ...................................................................................................................... 189 4.1002.2c Occupant education ....................................................................................................... 190 4.1003 Attic Ceilings 4.1003.8 Installing Fiberglass Blown Insulation for Flat, Bowed, or Vaulted Ceilings (via Roof Side Lift) 4.1003.8a Attic, ceiling, and roof verification ................................................................................... 191 4.1003.8d Fiberglass blown insulation installation .......................................................................... 194 4.1003.9 Installing Fiberglass Blown Insulation for Flat, Bowed, or Vaulted Ceilings (via Exterior Access from Top of Roof) 4.1003.9a Attic, ceiling, and roof verification ................................................................................... 196 4.1003.9b Attic access .................................................................................................................... 199 4.1003.9d Fiberglass blown insulation installation .......................................................................... 201 4.1003.9e Patching and sealing openings ...................................................................................... 203 4.1003.10 Installing Fiberglass Blown Insulation for Flat, Bowed, or Vaulted Ceilings (via Interior Access Through the Ceiling) 4.1003.10a Attic, ceiling, and roof verification ................................................................................... 206 4.1003.10b Construction prep ........................................................................................................... 208 4.1003.10c Attic access .................................................................................................................... 209 4.1003.10d Blowing machine set up ................................................................................................. 211 4.1003.10e Fiberglass blown insulation installation .......................................................................... 212 4.1003.10f Patching and sealing holes ............................................................................................ 213 4.1003.10g Verification of details ...................................................................................................... 214 4.1003.10h Onsite Documentation .................................................................................................... 215 4.1003.11 Installing Fiberglass Blown Insulation in Roof-Over Constructions 4.1003.11a Roof-over overview ........................................................................................................ 216 4.1003.11b Onsite documentation .................................................................................................... 218 4.1003.15 Installing Fiberglass Blown Insulation for Flat, Bowed, or Vaulted Ceilings (via Gable End Access) 4.1003.15a Attic, ceiling, and roof verification .................................................................................. 219 GA Wx Field Guide Georgia Environmental Finance Authority 9 of 486 February 06, 2019 Table of Contents 4.1003.15b Attic access ................................................................................................................... 221 4.1003.15c Blowing machine set up ................................................................................................ 222 4.1003.15d Fiberglass blown insulation installation ......................................................................... 223 4.1003.15e Replace Gable End Vent Covers ................................................................................... 224 4.1003.15f Verification of details ...................................................................................................... 225 4.1003.15g Onsite documentation ................................................................................................... 226 4.1088 Special Considerations 4.1088.6 Installing Insulation at Flat and Cathedral Ceiling Transition Wall 4.1088.6a Insulation installation verification .................................................................................... 227 4.1088.6b Access attic .................................................................................................................... 228 4.1088.6c Blowing ........................................................................................................................... 229 4.1088.6d Spray two-part foam ....................................................................................................... 230 4.1088.6e Batt ................................................................................................................................. 231 4.1088.6f Patching and sealing access points ............................................................................... 232 4.1088.6g Verification of details ...................................................................................................... 233 4.1088.6h Onsite Documentation .................................................................................................... 234 4.11 Walls 4.1101 Preparation 4.1101.5 Exterior Wall Dense Packing 4.1101.5a Preparation ..................................................................................................................... 235 4.1101.5b Exterior dense pack........................................................................................................ 237 4.1104 Manufactured Housing Wall Insulation 4.1104.1 Stuffing Wall Cavities with Fiberglass Batts 4.1104.1a Access wall cavities........................................................................................................ 238 4.1104.1b Exterior wall cavity inspection ........................................................................................ 239 4.1104.1c Fiberglass batt installation tool (stuffer).......................................................................... 240 4.1104.1d Fiberglass batt installation .............................................................................................. 241 4.1104.1e Sub-sheathing patch and repair ..................................................................................... 242 4.1104.1f Reattachment ................................................................................................................. 243 4.1104.1g Onsite documentation .................................................................................................... 244 4.1104.2 Fiberglass Blown Insulation Installation (Lifting Siding) 4.1104.2a Access wall cavities........................................................................................................ 245 4.1104.2b Exterior wall cavity inspection ........................................................................................ 246 4.1104.2c Blowing machine set up ................................................................................................. 247 4.1104.2d Fiberglass blown insulation installation .......................................................................... 248 4.1104.2e Subsheathing patch and repair ...................................................................................... 249 4.1104.2f Reattachment ................................................................................................................. 250 4.1104.2g Onsite documentation .................................................................................................... 251 4.1104.3 Fiberglass Blown Insulation Installation (via Penetrations Through or Behind the Siding) 4.1104.3a Access wall cavities........................................................................................................ 252 4.1104.3b Exterior wall cavity inspection ........................................................................................ 253 4.1104.3c Blowing machine set up ................................................................................................. 254 4.1104.3d Fiberglass blown insulation installation .......................................................................... 255 GA Wx Field Guide Georgia Environmental Finance Authority 10 of 486 February 06, 2019 Table of Contents 4.1104.3e Plug and seal holes ........................................................................................................ 256 4.1104.3f Final wall assembly ........................................................................................................ 257 4.1104.3g Onsite documentation .................................................................................................... 258 4.1104.4 Spray Foam Insulation Installation in Cavities above Doors and Windows 4.1104.4a Access wall cavities above doors and windows ............................................................. 259 4.1104.4b Cavity inspection ............................................................................................................ 260 4.1104.4c Insulation installation ...................................................................................................... 261 4.1104.4d Final wall assembly ........................................................................................................ 262 4.1104.4e Onsite documentation .................................................................................................... 263 4.13 Floors 4.1302 Manufactured Housing Belly Preparation 4.1302.1 Prepare Belly Floor Cavity for Insulation 4.1302.1a Work assessment ........................................................................................................... 264 4.1302.1b Preparation ..................................................................................................................... 265 4.1303 Manufactured Housing Floor Cavity Insulation 4.1303.1 Insulation of Floor Cavity with Blown Material 4.1303.1e Occupant education ....................................................................................................... 266 4.1303.2 Insulation of Floor Cavity with Batt Material 4.1303.2e Occupant education ....................................................................................................... 268 4.14 Basements and Crawl Spaces 4.1402 Basements and Crawl Space Walls 4.1402.2 Basement Wall Insulation--No Groundwater Leakage 4.1402.2a R-value ........................................................................................................................... 270 4.1402.2a R-value ........................................................................................................................... 271 4.1402.2b Air barrier........................................................................................................................ 272 4.1402.2b Air barrier........................................................................................................................ 273 4.1402.2c Vapor permeability ......................................................................................................... 275 4.1402.3 Basement Wall Insulation--Groundwater Leakage 4.1402.3a Drainage ......................................................................................................................... 277 4.1402.3a Drainage ......................................................................................................................... 278 4.1402.3b Rough finish walls (e.g., rubble walls) ............................................................................ 279 4.1402.3b Rough finish walls (e.g., rubble walls) ............................................................................ 280 4.1402.3c Thermal barrier, insulation.............................................................................................. 281 4.1402.3c Thermal barrier, insulation.............................................................................................. 282 4.1402.3d Location .......................................................................................................................... 283 4.1402.3d Location .......................................................................................................................... 284 4.1402.3e Termite protection .......................................................................................................... 285 4.1402.3e Termite protection .......................................................................................................... 286 4.1402.3f Insulation attachment ..................................................................................................... 287 4.1402.3f Insulation attachment ..................................................................................................... 288 4.1402.3g R-value ........................................................................................................................... 289 4.1402.3g R-value ........................................................................................................................... 290 4.1402.3h Sealing ........................................................................................................................... 291 4.1402.3h Sealing ........................................................................................................................... 292 GA Wx Field Guide Georgia Environmental Finance Authority 11 of 486 February 06, 2019 Table of Contents 4.1402.3i Finish wall requirements................................................................................................. 293 4.1402.3i Finish wall requirements................................................................................................. 294 4.1402.3j Onsite documentation .................................................................................................... 295 4.1488 Special Considerations 4.1488.1 Climate Considerations for Insulating Water Lines Located Between Bottom Board and Ground 4.1488.1b Installation ...................................................................................................................... 296 4.16 Ducts 4.1601 Insulating Ducts 4.1601.3 Insulation and Vapor Barrier 4.1601.3a Ducts in unconditioned spaces (e.g., crawl space, attic, unconditioned basements)..... 298 4.1601.3b Ducts within floor assemblies ......................................................................................... 299 4.1601.3c Exposed metal................................................................................................................ 300 4.1601.4 Insulating Flex Ducts 4.1601.4a Removal of existing flexible ducting ............................................................................... 301 4.1601.4b Selection of new flexible ducting .................................................................................... 302 4.1601.4c Sizing of new flex ........................................................................................................... 303 4.1601.4d Installation of flex............................................................................................................ 304 4.1601.4e Interior liner attachment.................................................................................................. 305 4.1601.4f Sealing of interior liner.................................................................................................... 306 4.1601.4g Attachment of exterior liner ............................................................................................ 307 4.1601.4h Sealing of all accessible ducts ....................................................................................... 308 4.1601.4i Insulation of all fittings .................................................................................................... 309 4.1601.4j Completeness of vapor barrier ....................................................................................... 310 4.1601.4k Vermin proofing .............................................................................................................. 311 4.1601.4l CAZ testing..................................................................................................................... 312 4.1601.5 Insulating Metal Ducts 4.1601.5a Selection of duct insulation material ............................................................................... 313 4.1601.5b Duct sealing.................................................................................................................... 315 4.1601.5c Attachment of duct insulation ......................................................................................... 317 4.1601.5d Taping of the vapor barrier ............................................................................................. 319 4.1601.5e Vermin proofing .............................................................................................................. 320 5 Heating and Cooling 5.30 Forced Air 5.3001 Design 5.3001.1 Load Calculation and Equipment Selection 5.3001.1a Load calculation ............................................................................................................. 321 5.3001.1b Equipment selection ....................................................................................................... 322 5.3001.1c Air filtration...................................................................................................................... 323 5.3001.3 Replace Return Air Systems that Incorporate Floor Cavity (Belly) and/or Attic as the Return Air Pathway 5.3001.3d Combustion Appliance Zone (CAZ) testing .................................................................... 324 GA Wx Field Guide Georgia Environmental Finance Authority 12 of 486 February 06, 2019 Table of Contents 5.3003 System Assessment and Maintenance 5.3003.1 Data Plate Verification 5.3003.1a Data plate verification ..................................................................................................... 325 5.3003.3 Evaluating Air Flow 5.3003.3a Total air flow ................................................................................................................... 326 5.3003.3b External static pressure .................................................................................................. 327 5.3003.3c Pressure ......................................................................................................................... 328 5.3003.3d Filter Inspection .............................................................................................................. 329 5.3003.3e Balancing room flow: new ductwork ............................................................................... 330 5.3003.3f Supply wet bulb and dry bulb ......................................................................................... 331 5.3003.3h Temperature rise: gas and oil furnaces only .................................................................. 332 5.3003.5 Refrigerant Line Inspection 5.3003.5a Insulation ........................................................................................................................ 333 5.3003.5b Ultraviolet (UV) protection of insulation .......................................................................... 334 5.3003.5c Sizing.............................................................................................................................. 335 5.3003.5d Installation quality ........................................................................................................... 336 5.3003.5e Support ........................................................................................................................... 337 5.3003.6 Evaluating Sequence of Operation 5.3003.6a Verification...................................................................................................................... 338 5.3003.7 Occupant Education 5.3003.7h Carbon monoxide (CO) .................................................................................................. 339 5.3003.11 Heating and Cooling Controls 5.3003.11a Removal of mercury- based thermostats ....................................................................... 340 5.3003.12 Package Units--Repair and Service 5.3003.12a Work assessment ........................................................................................................... 341 5.3003.12b Remove existing system components ............................................................................ 342 5.3003.12c Repairs ........................................................................................................................... 343 5.3003.12d Service existing components.......................................................................................... 344 5.3003.12e Commissioning ............................................................................................................... 345 5.3003.13 Refrigerant Charge Evaluation 5.3003.13a Prerequisite .................................................................................................................... 346 5.3003.13b Qualified contractor ........................................................................................................ 347 5.3003.13c Documentation ............................................................................................................... 348 5.3003.13d Quality assurance........................................................................................................... 349 5.3003.14 Combustion Analysis of Gas-Fired Appliances (LP and Natural Gas) 5.3003.14a Gas Pressure.................................................................................................................. 350 5.3003.14b Place appliance in operation .......................................................................................... 351 5.3003.14c Carbon dioxide (CO2)and oxygen (O2).......................................................................... 352 5.3003.14d Carbon monoxide (CO) in flue gas ................................................................................. 353 5.3003.14e Testing/inspection holes ................................................................................................. 354 5.3003.16 Evaluating Electrical Service 5.3003.16a Service entrance ............................................................................................................ 355 5.3003.16b Polarity............................................................................................................................ 356 5.3003.16c Voltage: incoming power ................................................................................................ 357 5.3003.16d Voltage: contactor .......................................................................................................... 358 5.3003.16e Grounding....................................................................................................................... 359 GA Wx Field Guide Georgia Environmental Finance Authority 13 of 486 February 06, 2019 Table of Contents 5.3003.16f Blower amperage ........................................................................................................... 360 5.3003.16g Compressor amperage................................................................................................... 361 5.3003.16h Door switch operation..................................................................................................... 362 5.3003.16i Heat pump: emergency heat .......................................................................................... 363 5.32 Shading 5.3202 Reflective Roofs 5.3202.1 Reflective Coatings on Metal Roofs 5.3202.1a Assessment .................................................................................................................... 364 5.3202.1b Preparation ..................................................................................................................... 365 5.3202.1c Materials selection.......................................................................................................... 366 5.3202.1d Application ...................................................................................................................... 367 5.3202.1e Occupant education ....................................................................................................... 368 6 Ventilation 6.60 Exhaust 6.6002 Components 6.6002.3 Exhaust-Only Ventilation--Fan Intake Grille Location 6.6002.3a Primary whole house ventilation..................................................................................... 369 6.6002.3b Local ventilation.............................................................................................................. 370 6.6002.4 Ducts (Exhaust Fans) 6.6002.4a Duct design and configuration ........................................................................................ 371 6.6002.4b Duct insulation ................................................................................................................ 372 6.6002.4c Duct support ................................................................................................................... 373 6.6002.4d Duct connections ............................................................................................................ 374 6.6002.4e Duct materials................................................................................................................. 375 6.6002.4f Total exhaust airflow ...................................................................................................... 376 6.6003 Fans 6.6003.1 Surface-Mounted Ducted 6.6003.1a Hole through interior surface .......................................................................................... 377 6.6003.1d Backdraft damper ........................................................................................................... 379 6.6003.1j Combustion safety.......................................................................................................... 380 6.6003.2 Inline 6.6003.2a Wiring ............................................................................................................................. 381 6.6003.2b Access ............................................................................................................................ 382 6.6003.2c Fan mounting ................................................................................................................. 383 6.6003.2d Backdraft damper ........................................................................................................... 384 6.6003.2e Duct connections ............................................................................................................ 385 6.6003.2f Boot to interior surface seal............................................................................................ 386 6.6003.2g Air flow............................................................................................................................ 387 6.6003.2h Preventing air leakage caused by exhaust fans ............................................................. 388 6.6003.2i Combustion safety.......................................................................................................... 389 6.6003.6 Fan Placement (Whole House/Common Space Exhaust Only) 6.6003.6a Clearance ....................................................................................................................... 390 6.6003.6b Power source ................................................................................................................. 391 GA Wx Field Guide Georgia Environmental Finance Authority 14 of 486 February 06, 2019 Table of Contents 6.6003.6c Location .......................................................................................................................... 392 6.6003.6d Duct/vent ........................................................................................................................ 393 6.6003.6e Attachment ..................................................................................................................... 394 6.6003.6f Total exhaust airflow ...................................................................................................... 395 6.6005 Appliance Exhaust Vents 6.6005.1 Clothes Dryer 6.6005.1a Clothes dryer ducting ..................................................................................................... 396 6.6005.1a Clothes dryer ducting ..................................................................................................... 398 6.6005.1b Termination fitting ........................................................................................................... 400 6.6005.1c Make-up air..................................................................................................................... 401 6.6005.1d Combustion safety.......................................................................................................... 402 6.6005.1e Occupant education ....................................................................................................... 403 6.6005.2 Kitchen Range 6.6005.2b Fan venting..................................................................................................................... 404 6.6005.2c Fan ducting..................................................................................................................... 405 6.6005.2e Makeup air...................................................................................................................... 408 6.6005.2f Combustion safety.......................................................................................................... 409 6.61 Supply 6.6102 Components 6.6102.4 Intake for Ventilation Air to Forced Air System Used for Heating or Cooling 6.6102.4a Forced air system requirements ..................................................................................... 410 6.6102.4b Wiring ............................................................................................................................. 411 6.6102.4c Access ............................................................................................................................ 412 6.6102.4d Mounting intake duct ...................................................................................................... 413 6.6102.4e Motorized damper .......................................................................................................... 414 6.6102.4f Intake filter ...................................................................................................................... 415 6.6102.4g Occupant education ....................................................................................................... 416 6.6102.4h Intake ventilation airflow ................................................................................................. 417 6.6188 Special Considerations 6.6188.2 Removing Supply Vents from Garages 6.6188.2g CAZ testing..................................................................................................................... 418 6.62 Whole Building Ventilation 6.6204 System Evaluation 6.6204.1 Commissioning Ventilation Systems 6.6204.1a Identification ................................................................................................................... 419 6.6204.1b Equipment inspection ..................................................................................................... 420 6.6204.1c Pathway inspection ........................................................................................................ 421 6.6204.1d Measurement and Adjustment ....................................................................................... 422 6.6204.1e Work order...................................................................................................................... 423 6.6204.1f Occupant education ....................................................................................................... 424 6.6205 Exhaust-Only System 6.6205.1 Manufactured Housing Exhaust-Only Strategies 6.6205.1e Combustion Appliance Zone (CAZ) testing .................................................................... 425 GA Wx Field Guide Georgia Environmental Finance Authority 15 of 486 February 06, 2019 Table of Contents 6.6206 Equipment Removal 6.6206.1 Decommissioning Existing Exhaust or Supply Ventilation Systems 6.6206.1d Combustion Appliance Zone (CAZ) testing .................................................................... 426 6.6288 Special Considerations 6.6288.2 Sound Ratings--New Fan Installation 6.6288.2a Primary ventilation system/continuously operating fan .................................................. 427 6.6288.2b Intermittent spot ventilation system ................................................................................ 428 6.99 Additional Resources 6.9901 Codes and Standards Resources 6.9901.1 Supplemental Ventilation Information--ASHRAE 62.2 6.9901.1a Ventilation fan flow rate .................................................................................................. 429 7 Baseload 7.80 Plug Load 7.8001 Refrigerators/Freezers 7.8001.1 Refrigerator and Freezer Replacement 7.8001.1a Selection......................................................................................................................... 430 7.8001.1b Installation ...................................................................................................................... 431 7.8001.1c Decommissioning ........................................................................................................... 432 7.8001.2 Cleaning and Tuning Existing Refrigerators and Freezers 7.8001.2a Clean and tune ............................................................................................................... 433 7.8003 Lighting 7.8003.1 Lighting Upgrade 7.8003.1b Selection......................................................................................................................... 434 7.81 Water Heating 7.8101 Water Use Reduction 7.8101.1 Shower Head and Faucet Aerator 7.8101.1b Selection......................................................................................................................... 436 7.8101.1c Installation ...................................................................................................................... 437 7.8101.1d Decommissioning ........................................................................................................... 440 7.8102 Installation and Replacement 7.8102.1 Water Heater Selection 7.8102.1a Selection parameters ..................................................................................................... 441 7.8102.1b Product selection ............................................................................................................ 443 7.8102.2 Storage-Type Appliance 7.8102.2e Expansion tank ............................................................................................................... 444 7.8102.2f Temperature and pressure relief valve........................................................................... 445 7.8102.2k Discharge temperature ................................................................................................... 447 7.8102.3 On-Demand Appliance 7.8102.3e Temperature and pressure relief valve........................................................................... 449 7.8102.3h Thermal efficiency .......................................................................................................... 451 7.8102.3i Required combustion air ................................................................................................ 453 GA Wx Field Guide Georgia Environmental Finance Authority 16 of 486 February 06, 2019 Table of Contents 7.8102.3j Venting of flue gases ...................................................................................................... 455 7.8102.3k Flue gas testing .............................................................................................................. 457 7.8102.3n Discharge temperature ................................................................................................... 459 7.8102.3n Discharge temperature ................................................................................................... 461 7.8102.3p Ambient CO .................................................................................................................... 463 7.8103 Maintenance/Inspection 7.8103.1 Storage-Type Appliance 7.8103.1a Health and safety ........................................................................................................... 464 7.8103.1b Visual inspection ............................................................................................................ 466 7.8103.1c Thermal efficiency .......................................................................................................... 468 7.8103.1e Temperature and pressure relief valve........................................................................... 470 7.8103.2 On-Demand Appliance 7.8103.2a Health and safety ........................................................................................................... 472 7.8103.2b Visual inspection ............................................................................................................ 474 7.8103.2c Temperature and pressure relief valve........................................................................... 476 7.8103.2d Flue gas testing .............................................................................................................. 478 7.8103.2f Venting of flue gases ...................................................................................................... 480 7.8103.2g Fuel supply ..................................................................................................................... 482 7.8103.2h Cold water supply ........................................................................................................... 484 7.8103.2i Discharge temperature ................................................................................................... 485 GA Wx Field Guide Georgia Environmental Finance Authority 17 of 486 February 06, 2019 Health and Safety > Safe Work Practices > Safe Work Practices 2.0100.1 - Global Worker Safety Desired Outcome: Work completed safely without injury or hazardous exposure Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 2.0100.1b - Hand protection Desired Outcome: Work completed safely without injury or hazardous exposure Specification(s): Durable and wrist-protecting gloves will be worn that can withstand work activity Objective(s): Minimize skin contact with contaminants Protect hands from hazards Unsafe Recognize potential risks Safe Wear appropriate hand protection GA Wx Field Guide Georgia Environmental Finance Authority 18 of 486 February 06, 2019 Health and Safety > Safe Work Practices > Safe Work Practices 2.0100.1b - Hand protection GOOD: Wear nitrile gloves when handling mastic Inspect gloves for holes and damage to minimize risk GA Wx Field Guide Georgia Environmental Finance Authority 19 of 486 February 06, 2019 Health and Safety > Safe Work Practices > Safe Work Practices 2.0100.1 - Global Worker Safety Desired Outcome: Work completed safely without injury or hazardous exposure Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 2.0100.1c - Respiratory protection Desired Outcome: Work completed safely without injury or hazardous exposure Specification(s): If the risk of airborne contaminants cannot be prevented, proper respiratory protection will be provided and worn (e.g., N-95 or equivalent face mask) When applying low pressure 2-component spray polyurethane foam, air purifying masks with an organic vapor cartridge and P-100 particulate filter will be used When applying high-pressure SPF insulation, supplied air respirators (SARs) will be used Consult MSDS for respiratory protection requirements OSHA 1910.134 shall be followed for the implementation of a respiratory protection program Objective(s): Minimize exposure to airborne contaminants (e.g., insulation materials, mold spores, feces, bacteria, chemicals) GA Wx Field Guide Georgia Environmental Finance Authority 20 of 486 February 06, 2019 Health and Safety > Safe Work Practices > Safe Work Practices 2.0100.1c - Respiratory protection Unsafe Workers need to properly protect their airways when retrofitting Best Practice Retrofits can have multiple different respiratory protection requirements Whenever airborne contaminants are For two-component spray insulation, All P-100s should be fitted to the a possibility, wear an N-95 mask P-100 respirators should be used individual worker When working with high-pressure spray foam, use a Supplied Air Respirator Safety Data Sheets (SDS) are required to replace MSDS as of June 2015; binders and signs may still be labeled as MSDS When unsure what level of protection is necessary, check the SDS GA Wx Field Guide Georgia Environmental Finance Authority 21 of 486 February 06, 2019 Health and Safety > Safe Work Practices > Safe Work Practices 2.0100.1 - Global Worker Safety Desired Outcome: Work completed safely without injury or hazardous exposure Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 2.0100.1h - Power tool safety Desired Outcome: Work completed safely without injury or hazardous exposure Specification(s): Power tools will be inspected and used in accordance with manufacturer specifications and OSHA regulations to eliminate hazards such as those associated with missing ground prongs, ungrounded circuits, misuse of power tools, noise, and improper or defective cords or extension cords.All tools must be maintained in proper operating condition with all guards securely in place All devices used will be verified as GFCI protected or double insulated Exhaust gases from compressors and generators will be prevented from entering interior space Objective(s): Prevent power tool injuries Prevent buildup of toxic or flammable contaminants GA Wx Field Guide Georgia Environmental Finance Authority 22 of 486 February 06, 2019 Health and Safety > Safe Work Practices > Safe Work Practices 2.0100.1h - Power tool safety Bad Practice Worker is using a circular saw with no eye or ear protection, and is not properly supporting the material to be cut. Best Practice Worker is cutting off of a stable surface, with appropriate eye and ear protection. Inspect power and extension cords closely for damage. Follow manufacturer's instructions for repair or replacement. Generator has been moved off the trailer to ensure no buildup of harmful exhaust gases. GA Wx Field Guide Georgia Environmental Finance Authority 23 of 486 February 06, 2019 Health and Safety > Safe Work Practices > Safe Work Practices 2.0100.1 - Global Worker Safety Desired Outcome: Work completed safely without injury or hazardous exposure Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 2.0100.1j - Ergonomic safety Desired Outcome: Work completed safely without injury or hazardous exposure Specification(s): Appropriate PPE will be used (e.g., knee pads, bump caps, additional padding) Proper equipment will be used for work Proper lifting techniques will be used Objective(s): Prevent injuries from awkward postures, repetitive motions, and improper lifting Unsafe Workers will take precautions to protect themselves on the job site Best Practice Hard hats, knee pads, bump caps, and team lifts help to prevent injury Visit https://www.osha.gov/SLTC/ergonomics/controlhazards.html for additional guidance. GA Wx Field Guide Georgia Environmental Finance Authority 24 of 486 February 06, 2019 Health and Safety > Safe Work Practices > Air Sealing 2.0101.1 - Air Sealing Worker Safety Desired Outcome: Work completed safely without injury or hazardous exposure 2.0101.1a - Worker safety Desired Outcome: Work completed safely without injury or hazardous exposure Specification(s): Worker safety specifications will be in accordance with SWS Global Worker Safety Complete safety action plan based on hazard; plan will be in place for each job site Objective(s): Prevent injury Minimize exposure to health and safety hazards GA Wx Field Guide Georgia Environmental Finance Authority 25 of 486 February 06, 2019 Health and Safety > Safe Work Practices > Air Sealing 2.0101.1 - Air Sealing Worker Safety Desired Outcome: Work completed safely without injury or hazardous exposure 2.0101.1b - Moisture precautions for crawl spaces and basements Desired Outcome: Work completed safely without injury or hazardous exposure Specification(s): Exposed earth will be covered with a continuous, durable, and sealed class I vapor retarder that is suitable for ground contact exposure to normal service traffic Causes of air dew points greater than 55F will be identified and eliminated in crawl spaces connected to conditioned spaces Seasonal dehumidification (e.g., dehumidified or conditioned with air conditioner supply) will be recommended where humidity sources, including outdoor air incursion, cannot be eliminated Undesigned penetrations between the crawl space or basement and the outdoors will be sealed Holes between the crawl space or basement and the living space will be sealed Open sumps and intentional slab or vapor barrier penetrations will be sealed or capped to control moisture and radon levels Objective(s): Ensure durability of repairs Reduce potential for occupant exposure to mold and other moisture-related hazards Reduce potential for occupant exposure to radon and other soil gases GA Wx Field Guide Georgia Environmental Finance Authority 26 of 486 February 06, 2019 Health and Safety > Safe Work Practices > Air Sealing 2.0101.1 - Air Sealing Worker Safety Desired Outcome: Work completed safely without injury or hazardous exposure 2.0101.1c - Moisture precautions: living space Desired Outcome: Work completed safely without injury or hazardous exposure Specification(s): Moisture sources in the building will be identified and reduced or removed Where local ventilation will be installed, (e.g., baths, kitchens), exhaust units will be vented to the outdoors in accordance with ASHRAE 62.2 Unvented heaters will be removed except when used as a secondary heat source and when it can be confirmed that the unit is listed to ANSI Z21.11.2 Unvented gas or propane cooking stoves will be tested for carbon monoxide (CO) per BPI Standard and corrected as required before air sealing work begins If replacing air conditioning system, new system will be sized to optimize dehumidification Properly sized dehumidifier will be installed to satisfy latent and sensible loads, when necessary ANSI/ACCA 2 Manual J-2011 (Residential Load Calculation) will be used to size replacement AC and heat pumps Enhanced dehumidification will be installed in the Gulf Coast region areas on the Gulf side of the warm humid line on the International Energy Conservation Code map Objective(s): Ensure durability of building components and repairs Reduce potential for occupant exposure to mold and other moisture-related hazards Reduce potential occupant exposure to CO GA Wx Field Guide Georgia Environmental Finance Authority 27 of 486 February 06, 2019 Health and Safety > Safe Work Practices > Air Sealing 2.0101.1 - Air Sealing Worker Safety Desired Outcome: Work completed safely without injury or hazardous exposure 2.0101.1d - Moisture precautions for exterior water Desired Outcome: Work completed safely without injury or hazardous exposure Specification(s): Before air sealing and insulating building components, exterior water management will be addressed Before insulating basement or crawl space walls near wet areas, surface water pooling near the foundation will be addressed by repairing, modifying, or replacing gutters and downspouts Grading and subsurface drainage at critical locations (e.g., localized drain and grading beneath valleys) will be in accordance with EPA Indoor airPLUS Construction Specifications Section 1.1 Objective(s): Reduce potential for occupant exposure to mold and other moisture-related hazards GA Wx Field Guide Georgia Environmental Finance Authority 28 of 486 February 06, 2019 Health and Safety > Safe Work Practices > Insulation 2.0102.1 - Insulation Worker Safety Desired Outcome: Work is completed safely without injury or hazardous exposure 2.0102.1a - Worker safety Desired Outcome: Work is completed safely without injury or hazardous exposure Specification(s): Worker safety specifications will be followed in accordance with SWS 2.0100 Global Worker Safety Objective(s): Prevent injury Minimize exposure to health and safety hazards GA Wx Field Guide Georgia Environmental Finance Authority 29 of 486 February 06, 2019 Health and Safety > Safe Work Practices > Insulation 2.0102.1 - Insulation Worker Safety Desired Outcome: Work is completed safely without injury or hazardous exposure 2.0102.1b - Asbestos containing materials (ACM) Desired Outcome: Work is completed safely without injury or hazardous exposure Specification(s): OSHA asbestos abatement protocol 29 CFR 1926.1101 will be followed if vermiculite insulation is present Assess potential asbestos hazard; if unsure whether material contains asbestos, contact a qualified asbestos professional to assess the material, and to sample and test as needed If suspected ACM is in good condition, do not disturb If suspected ACM is damaged (e.g., unraveling, frayed, breaking apart), immediately isolate the area(s) For suspected ACM that is damaged or that must be disturbed as part of the retrofit activity, contact an asbestos professional for abatement or repair, in accordance with federal, state, and local requirements; only a licensed or trained professional may abate, repair, or remove ACM When working around ACM, do not: Dust, sweep, or vacuum ACM debris Saw, sand, scrape, or drill holes in the material Use abrasive pads or brushes to strip materials Asbestos abatement or repair work should be completed prior to blower door testing; exercise appropriate caution when conducting blower door testing where friable asbestos or vermiculite attic insulation is present to avoid drawing asbestos fibers into the living space (i.e., use positively pressurized blower door testing) unless the material has been tested and found not to contain asbestos Objective(s): Protect workers and occupants from potential asbestos hazards GA Wx Field Guide Georgia Environmental Finance Authority 30 of 486 February 06, 2019 Health and Safety > Safe Work Practices > Insulation 2.0102.1b - Asbestos containing materials (ACM) GA Wx Field Guide Georgia Environmental Finance Authority 31 of 486 February 06, 2019 Health and Safety > Safe Work Practices > Insulation 2.0102.1 - Insulation Worker Safety Desired Outcome: Work is completed safely without injury or hazardous exposure 2.0102.1c - Materials Desired Outcome: Work is completed safely without injury or hazardous exposure Specification(s): All materials will be handled in accordance with manufacturer specifications or material safety data sheets (MSDS) standards Objective(s): Eliminate hazards associated with incorrect, defective, or improperly used or installed materials GA Wx Field Guide Georgia Environmental Finance Authority 32 of 486 February 06, 2019 Health and Safety > Safe Work Practices > Insulation 2.0102.1 - Insulation Worker Safety Desired Outcome: Work is completed safely without injury or hazardous exposure 2.0102.1d - Lead paint assessment Desired Outcome: Work is completed safely without injury or hazardous exposure Specification(s): Presence of lead based paint in pre-1978 homes will be assumed unless testing confirms otherwise The Environmental Protection Agency (EPA) Renovation, Repair, and Painting (RRP) Program Rule (40 CFR Part 745) in pre-1978 homes and proposed changes to this rule (Federal Register/Vol. 75, No. 87/May 6, 2010) will be complied with, to be superseded by any subsequent final rule making or any more stringent state or federal standards Objective(s): Protect worker and occupant from potential lead hazards GA Wx Field Guide Georgia Environmental Finance Authority 33 of 486 February 06, 2019 Health and Safety > Safe Work Practices > Heating and Cooling Equipment 2.0103.2 - Heating and Cooling Worker Safety Desired Outcome: Work completed safely without injury or hazardous exposure 2.0103.2b - Mercury Desired Outcome: Work completed safely without injury or hazardous exposure Specification(s): When replacing existing thermostats, identify and dispose of any mercury containing thermostats in accordance with Environmental Protection Agency (EPA) guidance Objective(s): Protect worker and occupant from mercury exposure Unsafe Mercury thermostats should be replaced and disposed of properly Unsafe Do NOT dispose of mercury thermostats in the trash--find local recycling Paraphrased from 40 CFR 273.14: A universal waste mercury-containing thermostat or container containing only universal waste mercury-containing thermostats should be labeled or marked clearly with any of the following phrases: "Universal Waste-Mercury Thermostat(s)," "Waste Mercury Thermostat(s)," or "Used Mercury Thermostat(s)." **Contact thermostat-recycle.org or earth911.org for recycling options. GA Wx Field Guide Georgia Environmental Finance Authority 34 of 486 February 06, 2019 Health and Safety > Safe Work Practices > Heating and Cooling Equipment 2.0103.2 - Heating and Cooling Worker Safety Desired Outcome: Work completed safely without injury or hazardous exposure 2.0103.2c - Asbestos Desired Outcome: Work completed safely without injury or hazardous exposure Specification(s): Suspected asbestos hazards will be identified in furnaces (e.g., gaskets), wood stoves, zonal heating devices, electrical wiring insulation, boilers, and pipe insulation and corrected in accordance with EPA guidance Workers will take precautionary measures to avoid exposure Objective(s): Protect worker and occupant from asbestos exposure Unsafe Have an AHERA-certified professional test all areas with suspected asbestos. Remediate in accordance with EPA rules. Refer to Georgia Weatherization Health and Safety Plan. GA Wx Field Guide Georgia Environmental Finance Authority 35 of 486 February 06, 2019 Health and Safety > Safe Work Practices > Heating and Cooling Equipment 2.0103.2 - Heating and Cooling Worker Safety Desired Outcome: Work completed safely without injury or hazardous exposure 2.0103.2d - Personal protective equipment (PPE) Desired Outcome: Work completed safely without injury or hazardous exposure Specification(s): Workers will wear personal protective equipment (PPE) as needed to protect themselves against exposure to hazards (e.g., pests, sewage, flooded duct work, mold, chemicals, scat, viruses) Long sleeves and long pants should be worn as additional protection from liquid nitrogen and other hazardous materials Objective(s): Protect worker from exposure to hazards Protect worker from skin contact with liquid nitrogen Unsafe When working with refrigerants, short sleeves are inappropriate Safe When working with refrigerants, workers should dress appropriately GA Wx Field Guide Georgia Environmental Finance Authority 36 of 486 February 06, 2019 Health and Safety > Safe Work Practices > Heating and Cooling Equipment 2.0103.2d - Personal protective equipment (PPE) Wear work gloves when working with metal ducts Assess the site and situation to determine proper PPE to minimize risks GA Wx Field Guide Georgia Environmental Finance Authority 37 of 486 February 06, 2019 Health and Safety > Safe Work Practices > Heating and Cooling Equipment 2.0103.2 - Heating and Cooling Worker Safety Desired Outcome: Work completed safely without injury or hazardous exposure 2.0103.2e - Combustible gas detection Desired Outcome: Work completed safely without injury or hazardous exposure Specification(s): Worker will check for presence of combustible gas leaks before work begins Leaks will be repaired before work is performed Objective(s): Protect worker and occupant from exposure to hazards Unsafe Fuel leaks need to be repaired Safe Repairs need to be tested and verified to no longer leak Tools: 1. Combustion gas detector 2. Spray bottle Materials: 1. Noncorrosive leak detection fluid Leakage will be located using an approved combustible gas detector, a noncorrosive leak detection fluid or an equivalent nonflammable solution. Matches, candles, open flames or other methods that could provide a source of ignition cannot be used. Where leakage or other defects are located, the affected portion of the piping system will be repaired or replaced and retested. GA Wx Field Guide Georgia Environmental Finance Authority 38 of 486 February 06, 2019 Health and Safety > Safe Work Practices > Heating and Cooling Equipment 2.0103.2e - Combustible gas detection 1 Fuel leaks discovered during initial audit should be flagged 2 3 Use approved combustion gas sniffer Repeatedly test repair site for leakage to see if repaired line still leaks over a 10 minute period 4 Allow testing solution to sit on newly repaired pipe joint for 10 minutes 5 Confirm repair and remove flag GA Wx Field Guide Georgia Environmental Finance Authority 39 of 486 February 06, 2019 Health and Safety > Safe Work Practices > Heating and Cooling Equipment 2.0103.2 - Heating and Cooling Worker Safety Desired Outcome: Work completed safely without injury or hazardous exposure 2.0103.2f - Carbon monoxide (CO) Desired Outcome: Work completed safely without injury or hazardous exposure Specification(s): Workers will check for presence of ambient CO before and during work CO issues will be addressed before work is performed or continued Objective(s): Protect worker and occupant from exposure to hazards Unsafe STOP WORK if CO levels are higher than 35ppm!! Tools: 1. Personal CO detector Technicians in the field must have a dedicated CO monitoring device on their person to monitor ambient CO levels independent of the combustion analyzer. GA Wx Field Guide Georgia Environmental Finance Authority 40 of 486 February 06, 2019 Health and Safety > Safe Work Practices > Baseload 2.0105.1 - Baseload Worker Safety Desired Outcome: Work is completed safely without injury or hazardous exposure 2.0105.1a - Worker safety Desired Outcome: Work is completed safely without injury or hazardous exposure Specification(s): All worker safety specifications in SWS 2.0100 Global Worker Safety section will be followed Objective(s): Prevent injury Minimize exposure to health and safety hazards GA Wx Field Guide Georgia Environmental Finance Authority 41 of 486 February 06, 2019 Health and Safety > Safe Work Practices > Baseload 2.0105.2 - Licensed Electrical Professional Desired Outcome: Work completed safely without injury from shock or arc flash 2.0105.2a - Worker safety Desired Outcome: Work completed safely without injury from shock or arc flash Specification(s): Any fixture, ballast, line voltage control, receptacle, or circuit modification will be performed by a licensed electrical professional in accordance with ANSI/NFPA 70 or as required by the authority having jurisdiction All workers will comply with ANSI/NFPA 70E All OSHA standard practices will be followed Objective(s): Prevent property damage Ensure worker safety GA Wx Field Guide Georgia Environmental Finance Authority 42 of 486 February 06, 2019 Health and Safety > Safe Work Practices > Material Safety 2.0106.1 - Material Selection, Labeling, and Material Safety Data Sheets (MSDSs) Desired Outcome: Occupant and worker risk from hazardous materials minimized 2.0106.1a - Material selection Desired Outcome: Occupant and worker risk from hazardous materials minimized Specification(s): Materials that do not create long-term health risks for occupants and workers will be used Objective(s): Improve indoor air quality in the living space GA Wx Field Guide Georgia Environmental Finance Authority 43 of 486 February 06, 2019 Health and Safety > Safe Work Practices > Material Safety 2.0106.1 - Material Selection, Labeling, and Material Safety Data Sheets (MSDSs) Desired Outcome: Occupant and worker risk from hazardous materials minimized 2.0106.1b - Material labels Desired Outcome: Occupant and worker risk from hazardous materials minimized Specification(s): Manufacturer specifications will be followed Objective(s): Reduce risk of exposure to harmful substances Follow safety procedures GA Wx Field Guide Georgia Environmental Finance Authority 44 of 486 February 06, 2019 Health and Safety > Safe Work Practices > Material Safety 2.0106.1 - Material Selection, Labeling, and Material Safety Data Sheets (MSDSs) Desired Outcome: Occupant and worker risk from hazardous materials minimized 2.0106.1c - Material Safety Data Sheets (MSDSs) Desired Outcome: Occupant and worker risk from hazardous materials minimized Specification(s): MSDSs will be provided onsite and available during all work Objective(s): Assess exposure risk Prepare a response in case of emergency GA Wx Field Guide Georgia Environmental Finance Authority 45 of 486 February 06, 2019 Health and Safety > Safe Work Practices > Basements and Crawl Spaces 2.0107.5 - Prework Qualifications (Home Installation) Desired Outcome: Manufactured home is properly installed 2.0107.5a - Installation deficiencies Desired Outcome: Manufactured home is properly installed Specification(s): Any installation deficiencies that may affect worker safety or integrity or installed measures will be repaired before starting work Objective(s): Ensure site is safe and ready for upgrade Unsafe The concrete pad is not centered under the pier, rendering the pier susceptible to tilting or collapse Safe Approved, properly installed piers, anchors, and tie downs Tools: 1. Level 2. Cordless driver drill 3. Flashlight Inspect homes for safety before work. Look for stuck doors and windows, buckled siding, and loose tie-downs as evidence of settling. Inspect piers to ensure that they are solid and level. Check for loose or missing wooden shims and wedges. Inspect anchors and straps for tightness and proper installation per manufacturer's recommendations. GA Wx Field Guide Georgia Environmental Finance Authority 46 of 486 February 06, 2019 Health and Safety > Safe Work Practices > Basements and Crawl Spaces 2.0107.5a - Installation deficiencies 1 Carefully inspect the foundation piers. Look for loose or missing shims and wedges GA Wx Field Guide Georgia Environmental Finance Authority 47 of 486 February 06, 2019 Health and Safety > Combustion Safety > Combustion Safety General 2.0201.1 - Combustion Appliance Zone (CAZ) Testing Desired Outcome: Accurate information about appliance safe operation is gathered 2.0201.1a - Assessment Desired Outcome: Accurate information about appliance safe operation is gathered Specification(s): Emergency problems (e.g., ambient gas levels greater than 10% Lower Explosion Limit (LEL), ambient CO levels that exceed 70 ppm) will be communicated clearly and immediately to the customer, the home shall be evacuated, and appropriate personnel (e.g.: HVAC technician, utility, emergency services) shall be contacted. ; Significant problems (e.g., gas leak less than 10% LEL, ambient CO levels that exceed 35 ppm but less than 70 ppm) will be communicated clearly and immediately to the customer and appropriate solutions will be suggested Examine appliance for signs of damage, misuse, improper repairs, and lack of maintenance Objective(s): Ensure system does not have potentially fatal problems GA Wx Field Guide Georgia Environmental Finance Authority 48 of 486 February 06, 2019 Health and Safety > Combustion Safety > Combustion Safety General 2.0201.1 - Combustion Appliance Zone (CAZ) Testing Desired Outcome: Accurate information about appliance safe operation is gathered 2.0201.1b - Fuel leak detection Desired Outcome: Accurate information about appliance safe operation is gathered Specification(s): Inspect and test for gas or oil leakage at connections of natural gas, propane piping, or oil systems If leaks are found, immediate action will be taken to notify occupant to help ensure leaks are repaired The report will specify repair for leaks and replacement for hazardous or damaged gas or oil connectors and pipes Objective(s): Detect fuel gas leaks Determine and report need for repair GA Wx Field Guide Georgia Environmental Finance Authority 49 of 486 February 06, 2019 Health and Safety > Combustion Safety > Combustion Safety General 2.0201.1 - Combustion Appliance Zone (CAZ) Testing Desired Outcome: Accurate information about appliance safe operation is gathered 2.0201.1d - Base pressure test Desired Outcome: Accurate information about appliance safe operation is gathered Specification(s): Baseline pressure for naturally drafting vented appliances will be measured in Combustion Appliance Zone with reference to outdoors Objective(s): Measure pressure difference between combustion zone and the outside under natural conditions GA Wx Field Guide Georgia Environmental Finance Authority 50 of 486 February 06, 2019 Health and Safety > Combustion Safety > Combustion Safety General 2.0201.1 - Combustion Appliance Zone (CAZ) Testing Desired Outcome: Accurate information about appliance safe operation is gathered 2.0201.1e - Depressurization test Desired Outcome: Accurate information about appliance safe operation is gathered Specification(s): CAZ depressurization testing will be administered for all atmospherically vented appliances located inside the pressure boundary. Depressurization test will include exhaust fans, interior door closure, or duct leakage, or a combination thereof; the test will be done to determine the largest negative pressure per BPI Standard 1200. Objective(s): Determine worst-case depressurization in combustion zone due mechanical system fans GA Wx Field Guide Georgia Environmental Finance Authority 51 of 486 February 06, 2019 Health and Safety > Combustion Safety > Combustion Safety General 2.0201.2 - Combustion Safety - Make-up Air Desired Outcome: Buildup of dangerous combustion byproducts in the living space prevented Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 2.0201.2a - Outside combustion make-up air Desired Outcome: Buildup of dangerous combustion byproducts in the living space prevented Specification(s): Where applicable, combustion air will be provided from the outside and installed in accordance with the IRC for the type of appliance installed Objective(s): Prevent combustion byproducts from entering the house GA Wx Field Guide Georgia Environmental Finance Authority 52 of 486 February 06, 2019 Health and Safety > Combustion Safety > Combustion Safety General 2.0201.2 - Combustion Safety - Make-up Air Desired Outcome: Buildup of dangerous combustion byproducts in the living space prevented Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 2.0201.2b - New appliances Desired Outcome: Buildup of dangerous combustion byproducts in the living space prevented Specification(s): If replacing appliances, a sealed-combustion, direct-vent appliance will be installed if possible. New appliances will be installed in accordance with manufacturer specifications, the IRC and additional applicable codes Objective(s): Prevent combustion byproducts from entering the house GA Wx Field Guide Georgia Environmental Finance Authority 53 of 486 February 06, 2019 Health and Safety > Combustion Safety > Combustion Safety General 2.0201.2 - Combustion Safety - Make-up Air Desired Outcome: Buildup of dangerous combustion byproducts in the living space prevented Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 2.0201.2c - CO detection and warning equipment Desired Outcome: Buildup of dangerous combustion byproducts in the living space prevented Specification(s): CO detection or warning equipment will be installed outside of each separate sleeping area in the immediate vicinity of the bedrooms in accordance with ASHRAE 62.2 and authority having local jurisdiction Installation will be accomplished by a licensed electrician when required by local code Objective(s): Alert occupant to CO exposure GA Wx Field Guide Georgia Environmental Finance Authority 54 of 486 February 06, 2019 Health and Safety > Combustion Safety > Combustion Safety General 2.0201.2 - Combustion Safety - Make-up Air Desired Outcome: Buildup of dangerous combustion byproducts in the living space prevented Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 2.0201.2d - Gas ovens Desired Outcome: Buildup of dangerous combustion byproducts in the living space prevented Specification(s): Gas ovens will be tested for CO A clean and tune will be conducted if measured CO in the undiluted flue gases of the oven vent at steady state exceeds 225 ppm as measured Objective(s): Ensure clean burn of gas ovens GA Wx Field Guide Georgia Environmental Finance Authority 55 of 486 February 06, 2019 Health and Safety > Combustion Safety > Combustion Safety General 2.0201.2 - Combustion Safety - Make-up Air Desired Outcome: Buildup of dangerous combustion byproducts in the living space prevented Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 2.0201.2e - Gas range burners Desired Outcome: Buildup of dangerous combustion byproducts in the living space prevented Specification(s): Specify clean and tune if the flame has any discoloration, flame impingement, an irregular pattern, or if burners are visibly dirty, corroded, or bent Objective(s): Ensure clean burn and operation of gas range burners GA Wx Field Guide Georgia Environmental Finance Authority 56 of 486 February 06, 2019 Health and Safety > Combustion Safety > Combustion Safety General 2.0201.2 - Combustion Safety - Make-up Air Desired Outcome: Buildup of dangerous combustion byproducts in the living space prevented Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 2.0201.2f - Solid fuel burning appliances Desired Outcome: Buildup of dangerous combustion byproducts in the living space prevented Specification(s): If the solid fuel burning appliance is the primary heat source and has signs of structural failure replace solid fuel burning appliance with UL-listed and EPA - certified appliances if the existing appliance is not UL-listed Objective(s): Ensure safe operations of solid fuel burning appliances GA Wx Field Guide Georgia Environmental Finance Authority 57 of 486 February 06, 2019 Health and Safety > Combustion Safety > Combustion Safety General 2.0201.3 - Vented Combustion Appliance Safety Testing Desired Outcome: Accurate information about appliance safe operation is gathered 2.0201.3a - Spillage Test Desired Outcome: Accurate information about appliance safe operation is gathered Specification(s): In conditions with largest negative pressure as determined from Detail 2.0201.1e: If spillage in a combustion appliance with a warm vent exceeds two minutes during pressure testing, specify measures to mitigate If spillage in a combustion appliance with a cold vent exceeds five minutes during pressure testing, specify measures to mitigate Objective(s): Detect excessive spillage of combustion gases Before Unsafe combustion appliances indicate need for repair or replacement After In cases of replacement, ensure new appliance is safe and sized properly For all homes with combustion appliances: If the gas supplier has shut off and locked the gas valve at the meter or the propane tank is empty, and the client states they are not and will not be using the appliance(s), then the client must remove the appliance(s) or disable them by disconnecting and capping off the gas line. GA Wx Field Guide Georgia Environmental Finance Authority 58 of 486 February 06, 2019 Health and Safety > Combustion Safety > Combustion Safety General 2.0201.3a - Spillage Test Since no combustion safety testing was performed, there is no liability on the agency's part should the client later restore fuel to the appliance(s). If the client refuses to have the system disabled, defer the home. If it appears that the client intends to restore the fuel supply and return the combustion appliance(s) to service, defer the home until combustion safety testing can be performed on them. Document everything in writing and obtain a client signature to acknowledge the conditions. All open combustion appliances must either be isolated in a sealed enclosure or replaced with a sealed combustion or direct vent appliance rated for manufactured home use. Also see SWS specifications 2.0204.1b and 2.0204.1d. Assess existing combustion appliances for damage and replace when necessary When a simple filter cleaning or Ensure there is adequate make-up air replacement will help, make it happen -- combustion air inlet in closet Stop the misuse of combustion Keep occupant apprised of any health appliances -- camp heater in bedroom or safety concerns GA Wx Field Guide Georgia Environmental Finance Authority 59 of 486 February 06, 2019 Health and Safety > Combustion Safety > Combustion Safety General 2.0201.3 - Vented Combustion Appliance Safety Testing Desired Outcome: Accurate information about appliance safe operation is gathered 2.0201.3b - Carbon monoxide (CO) test in appliance vent Desired Outcome: Accurate information about appliance safe operation is gathered Specification(s): CO will be tested for in undiluted flue gases of combustion appliances In conditions with largest negative pressure as determined from Detail 2.0201.1e: If CO levels exceed 400 ppm air-free measurement in furnaces, service will be provided to reduce CO to below these levels (unless CO measurement is within manufacturer specifications) If CO levels exceed 200 ppm air-free measurement in water heaters or room heaters, service will be provided to reduce CO to below these levels (unless CO measurement is within manufacturer specifications) Objective(s): Measure CO and report excessive levels GA Wx Field Guide Georgia Environmental Finance Authority 60 of 486 February 06, 2019 Health and Safety > Combustion Safety > Combustion Safety General 2.0201.3 - Vented Combustion Appliance Safety Testing Desired Outcome: Accurate information about appliance safe operation is gathered 2.0201.3c - Final test out Desired Outcome: Accurate information about appliance safe operation is gathered Specification(s): Final combustion testing will be conducted at project completion to ensure compliance with the above specifications Objective(s): Ensure safe operation of combustion appliance within the whole house system after any repair project Unsafe If venting system puts occupants at risk, it needs immediate attention Safe Properly vented appliances make a house healthier and more efficient GA Wx Field Guide Georgia Environmental Finance Authority 61 of 486 February 06, 2019 Health and Safety > Combustion Safety > Combustion Safety General 2.0201.3c - Final test out Inspect venting systems for damage Inspect venting systems for disconnected pipes Inspect venting systems for inadequate slope Inspect for missing draft diverter GA Wx Field Guide Georgia Environmental Finance Authority 62 of 486 February 06, 2019 Health and Safety > Combustion Safety > Unvented Space Heaters 2.0202.1 - Unvented Space Heaters: Propane, Natural Gas, and Kerosene Heaters Desired Outcome: Elimination of combustion byproducts 2.0202.1a - Removal Desired Outcome: Elimination of combustion byproducts Specification(s): With the occupant's permission, unvented heaters will be removed, except when used as a secondary heat source and when it can be confirmed that the unit is listed to ANSI Z21.11.2 Units that are not being operated in compliance with ANSI Z21.11.2 should be removed before the retrofit but may remain until a replacement heating system is in place Failure to remove unvented space heaters serving as primary heat sources has the potential to create hazardous conditions, and thus any further weatherization services will be reevaluated in the context of potential indoor air quality risks Objective(s): Eliminate sources of combustion byproduct within a living space GA Wx Field Guide Georgia Environmental Finance Authority 63 of 486 February 06, 2019 Health and Safety > Combustion Safety > Unvented Space Heaters 2.0202.1 - Unvented Space Heaters: Propane, Natural Gas, and Kerosene Heaters Desired Outcome: Elimination of combustion byproducts 2.0202.1b - Occupant education Desired Outcome: Elimination of combustion byproducts Specification(s): Occupant will be educated on potential hazards of unvented combustion appliances (primary or secondary) within a living space Objective(s): Inform occupant about possible hazards associated with combustion byproducts and moisture GA Wx Field Guide Georgia Environmental Finance Authority 64 of 486 February 06, 2019 Health and Safety > Combustion Safety > Vented Gas Appliances 2.0203.1 - Combustion Air for Natural Draft Appliances Desired Outcome: Sufficient air provided in the Combustion Appliance Zone (CAZ) 2.0203.1a - Required combustion air Desired Outcome: Sufficient air provided in the Combustion Appliance Zone (CAZ) Specification(s): The required volume of indoor air will be determined in accordance with IRC and authority having jurisdiction, except that where the air infiltration rate is known to be less than 0.40 air changes per hour (ACH), IRC will be used Exception: Existing appliances that have passed combustion safety testing per BPI 1200 are deemed to have sufficient combustion air Objective(s): Determine if existing conditions meet the combustion air calculation Best Practice Measure the volume available for combustion air to ensure actual volume present exceeds calculated volume. G2407.5.1 (304.5.1) Standard method. The minimum required volume shall be 50 cubic feet per 1,000 input Btu/h. G2407.5.2 (304.5.2) Known air-infiltration-rate method. Where the air infiltration rate of a structure is known, the minimum required volume shall be determined as follows: For appliances other than fan assisted, calculate volume using Equation 24-1. Required Volume(natural draft) ( (21ft3/ACHn)*(Input(other)/1,000BTU/hr)) where: Input(other ) = All appliances other than fan assisted (input in Btu/h), and ACH = Air changes per hour under natural GA Wx Field Guide Georgia Environmental Finance Authority 65 of 486 February 06, 2019 Health and Safety > Combustion Safety > Vented Gas Appliances 2.0203.1a - Required combustion air conditions. For purposes of this calculation, an infiltration rate greater than 0.60 ACH shall not be used in Equations 24-1. GA Wx Field Guide Georgia Environmental Finance Authority 66 of 486 February 06, 2019 Health and Safety > Combustion Safety > Vented Gas Appliances 2.0203.1 - Combustion Air for Natural Draft Appliances Desired Outcome: Sufficient air provided in the Combustion Appliance Zone (CAZ) 2.0203.1b - Additional combustion air (if action is required) Desired Outcome: Sufficient air provided in the Combustion Appliance Zone (CAZ) Specification(s): Additional combustion air will be provided in accordance with IRC and authority having jurisdiction when necessary to solve spillage problems Objective(s): Ensure adequate combustion air for operation of the appliance Before Combustion appliances in a confined space Tools: 1. Drywall saw 2. Drill 3. Tin snips 4. Tape measure After Additional combustion air supplied from high/ low vents Materials: 1. Metal ducts 2. Galvanized straps or L-brackets to secure high/low vents 3. Screws 4. Louvered grilles (optional) 5. Louvered doors (optional) Combustion appliances require 50 cubic feet of volume for every 1,000 Btuh input. If this is not available, provide makeup air in accordance with the IRC G.2407 or local code. GA Wx Field Guide Georgia Environmental Finance Authority 67 of 486 February 06, 2019 Health and Safety > Combustion Safety > Vented Gas Appliances 2.0203.1b - Additional combustion air (if action is required) When high/low vents are used, use two metal ducts each having 1 square inch of cross-sectional area for every 4,000 Btuh input. Extend each into the attic above the insulation level. Terminate one vent within 12" of the ceiling, and one vent within 12" of the floor. The vents may be concentric (one inside the other) to save space, so long as the difference between the area of the larger and smaller vents is equal to or greater than the 1 square inch/4,000 Btuh requirement. If using a single large opening in the ceiling, make the opening total 1 square inch per 3,000 Btuh input. If high/low vents extend horizontally through a CAZ wall, use vents with 1 square inch of area per 2,000 Btuh of input. Louvered grilles or doors may be used to connect the CAZ to larger sections of the home to achieve the required volume, but be aware that using this approach has higher potential for creating a carbon monoxide pathway into the home than does creating a sealed CAZ with high/low vents. 1 Select vent sizes based on the total input Btus in the CAZ. Concentric vents are shown 2 3 Cut hole in ceiling and mount high/low Complete installation by adding vents to framing supports and fasteners as required for stability and durability 4 Terminate the low vent within 12" of the floor. This one is mounted inside a section of larger diameter metal duct GA Wx Field Guide Georgia Environmental Finance Authority 68 of 486 February 06, 2019 Health and Safety > Combustion Safety > Vented Gas Appliances 2.0203.1 - Combustion Air for Natural Draft Appliances Desired Outcome: Sufficient air provided in the Combustion Appliance Zone (CAZ) 2.0203.1c - Spillage testing Desired Outcome: Sufficient air provided in the Combustion Appliance Zone (CAZ) Specification(s): If spillage in a combustion appliance with a warm vent exceeds two minutes during pressure testing, specify measures to mitigate If spillage in a combustion appliance with a cold vent exceeds five minutes during pressure testing, specify measures to mitigate Objective(s): Detect excessive spillage of combustion gases Natural draft appliances must be tested for spillage Tools: 1. Smoke pencil 2. Stopwatch or timer 3. Mirror Unsafe Spillage must not exceed 2 minutes in warm vent and 5 minutes in cold vent GA Wx Field Guide Georgia Environmental Finance Authority 69 of 486 February 06, 2019 Health and Safety > Combustion Safety > Vented Gas Appliances 2.0203.1c - Spillage testing 1 Inspect appliance for evidence of damage or unsafe operation before testing 2 Fire up appliance in order to test GA Wx Field Guide Georgia Environmental Finance Authority 70 of 486 February 06, 2019 Health and Safety > Combustion Safety > Vented Gas Appliances 2.0203.2 - Combustion Flue Gas--Orphaned Water Heaters Desired Outcome: Flue gasses successfully removed from the house 2.0203.2d - Required combustion air Desired Outcome: Flue gasses successfully removed from the house Specification(s): The minimum required volume will be 50 cubic feet per 1,000 Btu /h in accordance with IRC and authority having jurisdiction. Exception: Existing appliances that have passed combustion safety testing per BPI 1200 are deemed to have sufficient combustion air. Objective(s): Determine if existing conditions meet the combustion air calculation Best Practice Measure the volume available for combustion air to ensure actual volume present exceeds calculated volume. GA Wx Field Guide Georgia Environmental Finance Authority 71 of 486 February 06, 2019 Health and Safety > Combustion Safety > Vented Gas Appliances 2.0203.2 - Combustion Flue Gas--Orphaned Water Heaters Desired Outcome: Flue gasses successfully removed from the house 2.0203.2e - Additional combustion air (if action is required) Desired Outcome: Flue gasses successfully removed from the house Specification(s): Additional combustion air will be provided in accordance with IRC or other authority having jurisdiction Objective(s): Ensure adequate combustion air for operation of the appliance Before Combustion appliances in a confined space Tools: 1. Drywall saw 2. Drill 3. Tin snips 4. Tape measure After Additional combustion air supplied from high/ low vents Materials: 1. Metal ducts 2. Galvanized straps or L-brackets to secure high/low vents 3. Screws 4. Louvered grilles 5. Louvered doors Combustion appliances require 50 cubic feet of volume for every 1,000 Btuh input. If this is not available, provide makeup air in accordance with the IRC G.2407 or local code GA Wx Field Guide Georgia Environmental Finance Authority 72 of 486 February 06, 2019 Health and Safety > Combustion Safety > Vented Gas Appliances 2.0203.2e - Additional combustion air (if action is required) 1 Select vent sizes based on the total input Btus in the CAZ. Concentric vents are shown 2 3 Cut hole in ceiling and mount high/low Complete installation by adding vents to framing supports and fasteners as required for stability and durability 4 Terminate low vent within 12" of the floor. This one is fastened to a section of larger diameter duct for stability GA Wx Field Guide Georgia Environmental Finance Authority 73 of 486 February 06, 2019 Health and Safety > Combustion Safety > Vented Gas Appliances 2.0203.4 - Occupant Education Desired Outcome: Ensure persistence of resident safety 2.0203.4a - Occupant health and safety Desired Outcome: Ensure persistence of resident safety Specification(s): All homes will have a functioning CO alarm If CO levels in interior living spaces exceed outdoor levels, potential sources will be investigated and appropriate action taken to reduce them (e.g., have a qualified professional tune, repair, or replace improperly operating combustion appliances; apply weather stripping or conduct air sealing between the garage or crawl space and the home) Objective(s): Ensure occupant health and safety Ensure indoor CO levels do not exceed outdoor CO levels GA Wx Field Guide Georgia Environmental Finance Authority 74 of 486 February 06, 2019 Health and Safety > Combustion Safety > Vented Gas Appliances 2.0203.4 - Occupant Education Desired Outcome: Ensure persistence of resident safety 2.0203.4b - Occupant education Desired Outcome: Ensure persistence of resident safety Specification(s): Occupants will be educated on the operation and maintenance of the CO alarm Completed work on combustion appliances and recommended maintenance will be reviewed with occupant Occupant will be provided information regarding the health effects and risk of high CO concentrations; EPA provides possible expanded actions and offers client education information in an appendix to the protocols Objective(s): Ensure occupant can operate and maintain installations Inform occupant regarding possible CO hazards GA Wx Field Guide Georgia Environmental Finance Authority 75 of 486 February 06, 2019 Health and Safety > Combustion Safety > Isolation 2.0204.1 - Isolating Combustion Water Heater Closet Desired Outcome: Isolate combustion water heater closet from conditioned space Note: 2.0204.1d - Post-work testing/verification Desired Outcome: Isolate combustion water heater closet from conditioned space Specification(s): Blower door assisted zonal pressure diagnostics will be used to verify isolation has been achieved Objective(s): Prevent combustion gases from entering living area Before After This zonal is reading closer to 0Pa, indicating This zonal is reading closer to 50Pa, connection of the combustion closet to the indicating the combustion closet is isolated inside of the home. from the main body of the house. Tools: 1. blower door assembly 2. manometer 3. 1/4" hose 4. steel tube or probe 5. drill If not isolated, water heater must be direct vent or tankless. If isolated, ensure adequate combustion air is available. GA Wx Field Guide Georgia Environmental Finance Authority 76 of 486 February 06, 2019 Health and Safety > Combustion Safety > Isolation 2.0204.1d - Post-work testing/verification Ensure the house is depressurized to -50 pascals before performing zonal pressure diagnostics. GA Wx Field Guide Georgia Environmental Finance Authority 77 of 486 February 06, 2019 Health and Safety > Safety Devices > Combustion Safety Devices 2.0301.1 - Smoke Alarm Desired Outcome: Properly installed smoke alarms Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 2.0301.1a - Smoke alarm (hardwired) Desired Outcome: Properly installed smoke alarms Specification(s): When installing hardwired smoke alarms, it will be listed and labeled in accordance with UL 217 and installed in accordance with the IRC or as required by the authority having jurisdiction Objective(s): Ensure proper installation Unsafe Hard-wired smoke alarm mount with alarm missing Safe Hard-wired smoke alarm mount with alarm replaced GA Wx Field Guide Georgia Environmental Finance Authority 78 of 486 February 06, 2019 Health and Safety > Safety Devices > Combustion Safety Devices 2.0301.1 - Smoke Alarm Desired Outcome: Properly installed smoke alarms Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 2.0301.1b - Smoke alarm (battery operated) Desired Outcome: Properly installed smoke alarms Specification(s): When installing battery operated smoke alarms, it will be installed in accordance with manufacturer specifications Objective(s): Ensure proper installation GA Wx Field Guide Georgia Environmental Finance Authority 79 of 486 February 06, 2019 Health and Safety > Safety Devices > Combustion Safety Devices 2.0301.2 - Carbon Monoxide Alarm or Monitor Desired Outcome: Properly installed CO alarms or monitors Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 2.0301.2b - CO detection and warning equipment (battery operated) Desired Outcome: Properly installed CO alarms or monitors Specification(s): Battery-operated CO detection or warning equipment will be installed in accordance with the ASHRAE 62.2 and manufacturer specifications as required by the authority having jurisdiction Objective(s): Ensure proper installation . GA Wx Field Guide Georgia Environmental Finance Authority 80 of 486 February 06, 2019 Health and Safety > Moisture > Air Sealing 2.0401.1 - Air Sealing Moisture Precautions Desired Outcome: Ensure durability of repairs and reduce potential for occupant exposure to mold and other moisturerelated hazards 2.0401.1a - Moisture precautions for attics Desired Outcome: Ensure durability of repairs and reduce potential for occupant exposure to mold and other moisturerelated hazards Specification(s): Roof leaks will be repaired before performing attic air sealing or insulation Moisture sources in the house that can generate moisture into the attic will be identified and removed or reduced Where possible, water resistant sealants and/or closed cell foams will be used in cold climates. Plastic, foil, or any other Class 1 vapor barrier will not be used in hot humid climates In marine climates, vapor permeable materials will be used to block and seal penetrations in attic Objective(s): Ensure durability of repairs Reduce potential for occupant exposure to mold and other moisture-related hazards Prevent moisture from communicating from within the conditioned space into unconditioned attic space. Increase durability of seal Avoid moisture-related damage to the home GA Wx Field Guide Georgia Environmental Finance Authority 81 of 486 February 06, 2019 Health and Safety > Moisture > Air Sealing 2.0401.1 - Air Sealing Moisture Precautions Desired Outcome: Ensure durability of repairs and reduce potential for occupant exposure to mold and other moisturerelated hazards 2.0401.1b - Moisture precautions for crawl spaces Desired Outcome: Ensure durability of repairs and reduce potential for occupant exposure to mold and other moisturerelated hazards Specification(s): Exposed earth will be covered with a continuous, durable, sealed Class 1 vapor retarder a minimum of 6 mils in thickness Any vapor retarder shall not encapsulate wood building materials or spray foam Holes between the crawl space and the living space will be sealed Objective(s): Ensure durability of repairs Reduce potential for occupant exposure to mold and other moisture-related hazards GA Wx Field Guide Georgia Environmental Finance Authority 82 of 486 February 06, 2019 Health and Safety > Moisture > Air Sealing 2.0401.1 - Air Sealing Moisture Precautions Desired Outcome: Ensure durability of repairs and reduce potential for occupant exposure to mold and other moisturerelated hazards 2.0401.1c - Moisture precautions for the living space Desired Outcome: Ensure durability of repairs and reduce potential for occupant exposure to mold and other moisturerelated hazards Specification(s): Moisture sources in the home will be identified and removed or reduced Local ventilation will be installed where appropriate (e.g., baths, kitchens) and vented to outside according to ASHRAE 62.2 Unvented combustion appliances that are not listed to ANSI Z21.11.2 will be removed Objective(s): Ensure durability of repairs Reduce potential for occupant exposure to mold and other moisture-related hazards GA Wx Field Guide Georgia Environmental Finance Authority 83 of 486 February 06, 2019 Health and Safety > Moisture > Air Sealing 2.0401.1 - Air Sealing Moisture Precautions Desired Outcome: Ensure durability of repairs and reduce potential for occupant exposure to mold and other moisturerelated hazards 2.0401.1d - Moisture precautions for exterior water Desired Outcome: Ensure durability of repairs and reduce potential for occupant exposure to mold and other moisturerelated hazards Specification(s): Before air sealing basement or crawl space walls near wet areas, surface water pooling near the foundation will be addressed by: Repairing, modifying or replacing gutters and downspouts Grading and subsurface drainage at critical locations (e.g., localized drain and grading beneath valleys) in accordance with Environmental Protection Agency (EPA) Indoor airPLUS Construction Specifications Section 1.1 Possible mitigation by waterproofing or installing draining plane with construction adhesive Objective(s): Reduce potential for occupant exposure to mold and other moisture-related hazards GA Wx Field Guide Georgia Environmental Finance Authority 84 of 486 February 06, 2019 Health and Safety > Moisture > Drainage 2.0402.1 - Drainage Desired Outcome: Move water away from home 2.0402.1a - Work assessment Desired Outcome: Move water away from home Specification(s): Installer prework assessment will be conducted to determine: Standing water Positive grade/drainage Conditions of gutter system Vegetation/shrubbery Settling of home Leveling of home Ensure no organic material is under the supports, including topsoil and roots Objective(s): Verify scope of work Ensure that work space is ready for work GA Wx Field Guide Georgia Environmental Finance Authority 85 of 486 February 06, 2019 Health and Safety > Moisture > Drainage 2.0402.1 - Drainage Desired Outcome: Move water away from home 2.0402.1c - Occupant education Desired Outcome: Move water away from home Specification(s): Occupant will be educated on the benefit of trees and shrubs to reduce heat gain and provide wind breaks in high wind locations Occupant will be educated on the need to maintain positive drainage (e.g., gutters, down spouts, grading) and maintain ventilation Objective(s): Maintain durability Ensure water is moved down and away from home GA Wx Field Guide Georgia Environmental Finance Authority 86 of 486 February 06, 2019 Health and Safety > Moisture > Vapor Barriers 2.0403.4 - Pier and Skirting Foundations--Ground Moisture Barriers Desired Outcome: Durable, effective ground moisture barrier that provides ongoing access and minimizes ground vapor 2.0403.4a - Coverage Desired Outcome: Durable, effective ground moisture barrier that provides ongoing access and minimizes ground vapor Specification(s): If existing conditions of the ground and skirting mandates, a moisture barrier that covers the crawl space ground will be installed with allowances for structural supports (piers) and accessibility Objective(s): Reduce ground moisture entering crawl space Before Manufactured home crawlspace with incomplete ground vapor barrier Tools: 1. Utility knife 2. Hammer or mallet 3. Scissors After Manufactured home crawlspace with complete ground vapor barrier Materials: 1. Polyethylene vapor barrier, 6-mil thickness or greater 2. Waterproof tape 3. Polyurethane caulking or construction adhesive 4. Landscape staples GA Wx Field Guide Georgia Environmental Finance Authority 87 of 486 February 06, 2019 Health and Safety > Moisture > Vapor Barriers 2.0403.4a - Coverage Aim for complete coverage. If access to the entire crawlspace is impossible, cover all accessible areas. Overlap seams in vapor barrier by at least twelve inches, and seal them with waterproof tape and/or polyurethane caulk or adhesive. Wrap and cover support piers at least six inches high. 1 2 3 Remove skirting as needed for access to crawlspace Measure, cut, and spread vapor barrier material after removing debris over 1/2" in size. Notch around obstructions Wrap piers and columns at least six inches high. Use additional material to cover any gaps and holes in vapor barrier 4 5 Secure vapor barrier to ground with Remove tools and excess material corrosion-resistant landscape staples, or weigh it down with ballast 6 Reinstall skirting GA Wx Field Guide Georgia Environmental Finance Authority 88 of 486 February 06, 2019 Health and Safety > Moisture > Vapor Barriers 2.0403.4 - Pier and Skirting Foundations--Ground Moisture Barriers Desired Outcome: Durable, effective ground moisture barrier that provides ongoing access and minimizes ground vapor 2.0403.4b - Material specification Desired Outcome: Durable, effective ground moisture barrier that provides ongoing access and minimizes ground vapor Specification(s): A ground moisture barrier with a rating of no more than 0.1 perm will be used A ground moisture barrier will be used that meets tear and puncture resistance standard ASTM E1745 Homeowner will be advised that all plastic is biodegradable and will have a life span much shorter than the home (5 years), and it will need replacing to remain effective Objective(s): Ensure crawl space is accessible for service and maintenance without damaging the integrity of the ground moisture barrier Best Practice Barrier must be at least 6 mil Best Practice Talk to occupant about expected life of ground barrier and eventual need to replace it GA Wx Field Guide Georgia Environmental Finance Authority 89 of 486 February 06, 2019 Health and Safety > Moisture > Vapor Barriers 2.0403.4b - Material specification Materials: 1. Plastic sheeting (at least 6 mil) 2. Furring strips 3. Fasteners The higher a material's perm rating, the more vapor can pass through said material. Drywall typically has a perm rating of approximately 50. For vapor retarders in basements and crawl spaces, SWS calls for materials with a perm rating of <0.1 (which translates to 4mil or thicker). From 2007 IRC definition of vapor retarders: Class I: 0.1 perm (called impermeable), Class II: 0.1 to 1.0 perm (called semi-impermeable), Class III: 1.0 perm to 10 perms (called semi-permeable). Vapor barrier must be at least 6 mil thickness. GA Wx Field Guide Georgia Environmental Finance Authority 90 of 486 February 06, 2019 Health and Safety > Radon > Air Sealing 2.0501.2 - Pier and Skirting Foundation--Venting Desired Outcome: Pollutants are effectively vented 2.0501.2b - Occupant education Desired Outcome: Pollutants are effectively vented Specification(s): Occupants will be educated on purpose, operation, and maintenance of vents Objective(s): Ensure vents function as intended Teach homeowners how and when to operate foundation vents Instruct homeowners that vents are intended to provide a path to outdoors for pollutants and soil moisture. Ideal settings for vents may be climate-dependents, but typically vents may be closed throughout the fall and winter when the air is relatively dry to conserve heat. They can be reopened when warmer weather begins in spring. GA Wx Field Guide Georgia Environmental Finance Authority 91 of 486 February 06, 2019 Health and Safety > Radon > Air Sealing 2.0501.2b - Occupant education 1 Close vents in fall or winter when heating season starts 2 Open foundation vents in spring time when weather warms GA Wx Field Guide Georgia Environmental Finance Authority 92 of 486 February 06, 2019 Health and Safety > Electrical > Electric Hazards 2.0602.1 - Static Electric Shock Desired Outcome: Prevention of static electric shock to the insulation installer when using rigid tubing 2.0602.1a - Rigid fill tube Desired Outcome: Prevention of static electric shock to the insulation installer when using rigid tubing Specification(s): Rigid fill tubes will be made of a material that will not hold an electric charge, such as Schedule 40 PVC Electrical Conduit, or be grounded Objective(s): Prevent injury to the installer GA Wx Field Guide Georgia Environmental Finance Authority 93 of 486 February 06, 2019 Health and Safety > Electrical > Electric Hazards 2.0602.1 - Static Electric Shock Desired Outcome: Prevention of static electric shock to the insulation installer when using rigid tubing 2.0602.1b - Metal coupler grounding Desired Outcome: Prevention of static electric shock to the insulation installer when using rigid tubing Specification(s): For an additional level of protection, the metal coupler on the hose will be connected to the grounding wire Grounding wire will be connected to the grounding rod Grounding rod will be driven into the ground a minimum of 8' when possible; grounding wire will be connected in compliance with local code and authority having jurisdiction Objective(s): Divert static discharge of electricity to ground instead of installer GA Wx Field Guide Georgia Environmental Finance Authority 94 of 486 February 06, 2019 Health and Safety > Electrical > Electric Hazards 2.0602.2 - House Current Electric Hazard Desired Outcome: Prevention of injury to the installer and occupant, and prevent damage to the structure, if required by authority having jurisdiction Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 2.0602.2c - Electrical tool safety Desired Outcome: Prevention of injury to the installer and occupant, and prevent damage to the structure, if required by authority having jurisdiction Specification(s): An electrical safety assessment will be performed All electric tools will be protected by ground-fault circuit interrupters (GFCI) Three-wire type extension cords will be used with portable electric tools Worn or frayed electric cords will not be used Water sources (e.g., condensate pans) and electrical sources will be kept separate Metal ladders will be avoided Aluminum foil products will be kept away from live wires For arc flash hazards, NFPA 70E will be consulted Objective(s): Avoid electrical shock and arc flash hazards GA Wx Field Guide Georgia Environmental Finance Authority 95 of 486 February 06, 2019 Health and Safety > Electrical > Electric Hazards 2.0602.2c - Electrical tool safety Unsafe Inspect house for unsafe electrical situations Best Practice Attics and crawl spaces should be inspected closely for electrical safety before work begins Use GFCIs and three-wire extension Electrical wiring should not be located Use fiberglass ladders in place of cords for all power tools near a water source metal GA Wx Field Guide Georgia Environmental Finance Authority 96 of 486 February 06, 2019 Health and Safety > Electrical > Electric Hazards 2.0602.2 - House Current Electric Hazard Desired Outcome: Prevention of injury to the installer and occupant, and prevent damage to the structure, if required by authority having jurisdiction Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 2.0602.2d - Aluminum wiring Desired Outcome: Prevention of injury to the installer and occupant, and prevent damage to the structure, if required by authority having jurisdiction Specification(s): If aluminum wiring is present, work on the home will be stopped until the suspect wiring is inspected and determined to be safe by a licensed electrician After energy retrofit is completed, wiring will be reinspected by a licensed electrician Objective(s): Prevent injury to installer and occupant Prevent damage to structure Unsafe Have a certified electrician perform a load test before any weatherization work if aluminum wire is present. Safe This panel does not contain aluminum wire. GA Wx Field Guide Georgia Environmental Finance Authority 97 of 486 February 06, 2019 Health and Safety > Electrical > Electric Hazards 2.0602.2d - Aluminum wiring Tools: 1. Screwdriver (to remove panel cover) 2. Flashlight Check for the presence of aluminum wire (identified by its light gray color). If aluminum wire is present, you may proceed with the audit. However, retrofit work on the home may not begin until after a certified electrician has inspected every single wiring connection, including all breakers, junction boxes, lights, switches, receptacles, and appliances and determined that the wiring does not present a fire hazard. 1 2 Inspect panel box for presence of (silver or gray colored) aluminum wire Have a certified electrician inspect every aluminum wire connection in the home 3 After electrician verifies wiring is safe, proceed with retrofit work 4 Perform retrofit measures 5 When retrofit is complete, have certified electrician re-check wiring for safety GA Wx Field Guide Georgia Environmental Finance Authority 98 of 486 February 06, 2019 Health and Safety > Occupant Education and Access > Installed Equipment 2.0702.1 - Warranty and Service Agreement Desired Outcome: Occupants provided recourse for failures in materials, workmanship, and serviceability and informed of potential hazards 2.0702.1a - Warranty Desired Outcome: Occupants provided recourse for failures in materials, workmanship, and serviceability and informed of potential hazards Specification(s): A minimum 1-year warranty for materials, workmanship, and serviceability will be provided to occupants upon completion of work Objective(s): Provide recourse to occupants for failures in materials, workmanship, and serviceability GA Wx Field Guide Georgia Environmental Finance Authority 99 of 486 February 06, 2019 Health and Safety > Occupant Education and Access > Installed Equipment 2.0702.1 - Warranty and Service Agreement Desired Outcome: Occupants provided recourse for failures in materials, workmanship, and serviceability and informed of potential hazards 2.0702.1b - Warranty and Maintenance Agreement - Client Education Desired Outcome: Occupants provided recourse for failures in materials, workmanship, and serviceability and informed of potential hazards Specification(s): Provide occupants with manufacturers' warranties on installed equipment and inform of installer maintenance agreement options Share information on company related annual inspections and maintenance agreements as well as manufacturer related warranty details Objective(s): Ensure occupants are aware of warranty and maintenance agreement options GA Wx Field Guide Georgia Environmental Finance Authority 100 of 486 February 06, 2019 Health and Safety > Occupant Education and Access > Installed Equipment 2.0702.1 - Warranty and Service Agreement Desired Outcome: Occupants provided recourse for failures in materials, workmanship, and serviceability and informed of potential hazards 2.0702.1c - General conditions Desired Outcome: Occupants provided recourse for failures in materials, workmanship, and serviceability and informed of potential hazards Specification(s): At a minimum, the following concerns and warnings will be addressed within the warranty, as applicable to the work being warrantied: Possible drying and shrinking effects Storage of hazardous and flammable materials Mold Objective(s): Educate occupants on potential hazards GA Wx Field Guide Georgia Environmental Finance Authority 101 of 486 February 06, 2019 Air Sealing > Attics > Penetrations and Chases 3.1001.4 - General Penetrations (Electrical, HVAC, Plumbing, Vent Termination, Recessed Lighting) Desired Outcome: Penetrations sealed to prevent air leakage and moisture movement between unconditioned and conditioned space Note: 3.1001.4b - Air sealing penetrations Desired Outcome: Penetrations sealed to prevent air leakage and moisture movement between unconditioned and conditioned space Specification(s): Backing or infill will be provided as needed to meet the specific characteristics of the selected material and the characteristics of the penetration or hole The infill or backing will not bend, sag, or move once installed All accessible damaged vapor barrier will be repaired Penetration through the air barrier will be repaired Objective(s): Ensure closure is permanent and supports any load (e.g., wind, insulation, mechanical pressures) Ensure sealant is effective and durable Before Gaps around floor penetrations, such as plumbing, HVAC, and electrical GA Wx Field Guide Georgia Environmental Finance Authority After Gaps should be sealed to maintain air barrier 102 of 486 February 06, 2019 Air Sealing > Attics > Penetrations and Chases Tools: 1. Headlamp 2. Caulk gun 3.1001.4b - Air sealing penetrations Materials: 1. Backer rod 2. Sealant 3. Adhesive tape 4. Plastic sheeting (at least 6 mil) 1 2 Prepare work space by removing any Infill with backer rod insulation 3 Apply appropriate caulking to ensure backing/infill does not move 4 Visually inspect to verify no gaps remain GA Wx Field Guide Georgia Environmental Finance Authority 103 of 486 February 06, 2019 Air Sealing > Attics > Penetrations and Chases 3.1001.4 - General Penetrations (Electrical, HVAC, Plumbing, Vent Termination, Recessed Lighting) Desired Outcome: Penetrations sealed to prevent air leakage and moisture movement between unconditioned and conditioned space Note: 3.1001.4c - Sealant selection Desired Outcome: Penetrations sealed to prevent air leakage and moisture movement between unconditioned and conditioned space Specification(s): Sealants will be used to fill holes no larger than recommended by manufacturer specifications Sealants will be compatible with all adjoining surfaces Sealants will be continuous and meet fire barrier specifications, according to authority having jurisdiction Objective(s): Create a permanent seal Ensure sealant meets or exceeds the performance characteristics of the surrounding materials Create a continuous seal Bad Practice Avoid sealants that do not allow for expansion between dissimilar materials GA Wx Field Guide Georgia Environmental Finance Authority Best Practice Flexible sealants compensate for differential expansion and maintain a seal 104 of 486 February 06, 2019 Air Sealing > Attics > Penetrations and Chases Tools: 1. Caulk gun 2. Spray foam gun Materials: 1. Caulk 2. Spray foam 3.1001.4c - Sealant selection Caulking can be used to span gaps up Spray foam can be used to span gaps Check manufacturer specifications to to 1/4 inch up to 3 inches verify spanning capabilities Also check manufacturer specs for incompatibility with intended surfaces GA Wx Field Guide Georgia Environmental Finance Authority 105 of 486 February 06, 2019 Air Sealing > Attics > Penetrations and Chases 3.1001.4 - General Penetrations (Electrical, HVAC, Plumbing, Vent Termination, Recessed Lighting) Desired Outcome: Penetrations sealed to prevent air leakage and moisture movement between unconditioned and conditioned space Note: 3.1001.4d - Ceiling hole repair Desired Outcome: Penetrations sealed to prevent air leakage and moisture movement between unconditioned and conditioned space Specification(s): Ceiling repair material must meet or exceed strength of existing ceiling material Ceiling repair must span from truss to truss or add blocking as needed for support The backing or infill will not bend, sag, or move once installed All accessible damaged vapor barriers will be repaired Penetrations through the air barrier must be repaired Objective(s): Ensure ceiling is structurally sound Minimize air leakage Ensure closure is permanent and supports expected wind and mechanical pressure loads Ensure sealant does not fall out GA Wx Field Guide Georgia Environmental Finance Authority 106 of 486 February 06, 2019 Air Sealing > Attics > Penetrations and Chases 3.1001.4d - Ceiling hole repair Before Hole in drywall ceiling In Progress Drywall patch in place Tools: 1. 6-inch and 12-inch drywall taping knives 2. Sanding block or sanding sponge 3. Utility knife 4. Keyhole saw 5. Screw gun Materials: 1. Drywall or paneling 2. Fiberglass joint tape 3. Joint compound 4. Drywall screws 5. Support material if needed (typically 1X4, 1X6, or 2X4 dimensional lumber) For holes in paneled ceilings, use matching panels for repairs. Consider replacing entire sections to avoid creating unsightly mismatched patches. For small holes, enlarge to a rectangular shape and install 1 X 4 blocks above two edges of the hole. For larger holes, enlarge opening to centers of nearest trusses and fasten the patch to the framing. 1 Replace any missing insulation and repair holes in vapor barrier 2 3 Prepare the hole by cutting the edges Cut drywall and fasten in place clean and square GA Wx Field Guide Georgia Environmental Finance Authority 107 of 486 February 06, 2019 Air Sealing > Attics > Penetrations and Chases 4 Add joint tape and first coat of joint compound 3.1001.4d - Ceiling hole repair GA Wx Field Guide Georgia Environmental Finance Authority 108 of 486 February 06, 2019 Air Sealing > Attics > Penetrations and Chases 3.1001.4 - General Penetrations (Electrical, HVAC, Plumbing, Vent Termination, Recessed Lighting) Desired Outcome: Penetrations sealed to prevent air leakage and moisture movement between unconditioned and conditioned space Note: 3.1001.4e - Materials Desired Outcome: Penetrations sealed to prevent air leakage and moisture movement between unconditioned and conditioned space Specification(s): Materials will be used or installed in accordance with product manufacturer specifications Objective(s): Select materials to ensure durable and permanent repair Best Practice Choose durable, high quality sealants that are compatible with existing materials Tools: 1. Caulking gun 2. Reusable spray foam gun 3. Utility knife GA Wx Field Guide Georgia Environmental Finance Authority Materials: 1. Caulk 2. Foam sealant 3. Foam board 4. Drywall 5. Joint compound 109 of 486 February 06, 2019 Air Sealing > Attics > Penetrations and Chases 3.1001.4e - Materials GA Wx Field Guide Georgia Environmental Finance Authority 110 of 486 February 06, 2019 Air Sealing > Attics > Penetrations and Chases 3.1001.4 - General Penetrations (Electrical, HVAC, Plumbing, Vent Termination, Recessed Lighting) Desired Outcome: Penetrations sealed to prevent air leakage and moisture movement between unconditioned and conditioned space Note: 3.1001.4f - High temperature application Desired Outcome: Penetrations sealed to prevent air leakage and moisture movement between unconditioned and conditioned space Specification(s): Only noncombustible materials will be used in contact with chimneys, vents, and flues Local codes will be referenced Objective(s): Prevent a fire hazard Before Gaps around combustion exhaust flues need to be sealed After Sealed penetrations and chases should utilize high-temperature materials Tools: 1. Drill/screwdriver 2. Caulk gun 3. Metal snips Materials: 1. High-temperature caulk 2. Non-combustible rigid material (ex: aluminum or steel flashing, cement board) GA Wx Field Guide Georgia Environmental Finance Authority 111 of 486 February 06, 2019 Air Sealing > Attics > Penetrations and Chases 3.1001.4f - High temperature application Spray foam sealant is not allowed in high-temperature applications, even if labeled as fire block or fire foam, and regardless of being colored pink or orange. 1 Prepare work area by removing any insulation and debris 2 3 Use high-temperature caulking (600F Apply first ring of caulking to match min) shape of opening 4 Apply second ring of caulking to size and shape of rigid material 5 Fasten rigid material and apply additional caulking 6 Fasten rigid material to cover penetration and seal against flue with caulk GA Wx Field Guide Georgia Environmental Finance Authority 112 of 486 February 06, 2019 Air Sealing > Walls > Manufactured Housing Walls 3.1101.1 - Exterior Holes and Penetrations Desired Outcome: Penetrations sealed to minimize air leakage and moisture movement between unconditioned and conditioned space; all repairs will maintain structural integrity 3.1101.1b - Materials Desired Outcome: Penetrations sealed to minimize air leakage and moisture movement between unconditioned and conditioned space; all repairs will maintain structural integrity Specification(s): Like material and/or compatible materials will be used for repairs Materials will be selected to comply with manufactured housing rules and regulations (e.g., Manufactured Housing Institute) Objective(s): Select materials to ensure durable and permanent repair Before Hole in exterior wall of manufactured home aluminum siding After Completed wall patch GA Wx Field Guide Georgia Environmental Finance Authority 113 of 486 February 06, 2019 Air Sealing > Walls > Manufactured Housing Walls 3.1101.1b - Materials Tools: 1. Sheet metal nibbler 2. Power saw 3. Snips 4. Screw gun 5. Caulking gun Materials: 1. Aluminum siding or flashing 2. Oriented Strand Board (OSB) sheathing 3. Vinyl siding 4. Galvanized steel 5. Corrosion-resistant fasteners 6. High quality caulk formulated for exterior use 1 Replace damaged siding 2 Use siding that matches the existing material's contour, texture, and color GA Wx Field Guide Georgia Environmental Finance Authority 114 of 486 February 06, 2019 Air Sealing > Walls > Manufactured Housing Walls 3.1101.2 - Interior Holes and Penetrations Desired Outcome: Penetrations sealed to minimize air leakage and moisture movement between unconditioned and conditioned space; all repairs will maintain structural integrity 3.1101.2b - Interior wall air sealing Desired Outcome: Penetrations sealed to minimize air leakage and moisture movement between unconditioned and conditioned space; all repairs will maintain structural integrity Specification(s): All accessible holes and penetrations in top and bottom plates will be sealed Backing or infill will be provided as needed to meet the specific characteristics of the selected sealant and the characteristics of the penetration Objective(s): Minimize air leakage Maintain durability Ensure resulting closure is permanent and supports expected wind and mechanical pressure loads Ensure sealant is effective and durable Before Unsealed penetrations through top plate After Sealed wiring penetrations through top plate GA Wx Field Guide Georgia Environmental Finance Authority 115 of 486 February 06, 2019 Air Sealing > Walls > Manufactured Housing Walls 3.1101.2b - Interior wall air sealing Tools: 1. Caulking gun 2. Reusable spray foam gun Materials: 1. Caulk 2. Spray polyurethane foam 3. Foam backer rod or pieces of fiberglass batt 1 Locate and expose penetrations to prepare for sealant 2 3 Use caulk or foam (approved by local Ensure that all accessible gaps, holes, code) to seal wiring penetrations and penetrations are filled through top plate GA Wx Field Guide Georgia Environmental Finance Authority 116 of 486 February 06, 2019 Air Sealing > Walls > Manufactured Housing Walls 3.1101.3 - Holes, Penetrations, and Marriage Line Desired Outcome: Penetrations sealed to minimize air leakage and moisture movement between unconditioned and conditioned space; all repairs to maintain structural integrity 3.1101.3c - Marriage line air sealing Desired Outcome: Penetrations sealed to minimize air leakage and moisture movement between unconditioned and conditioned space; all repairs to maintain structural integrity Specification(s): All accessible holes and penetrations at marriage lines will be sealed continuously at end walls, floors, and ceiling Backing or infill will be provided at the marriage line as needed All remaining gaps will be sealed with an approved material Objective(s): Minimize air leakage Maintain durability Ensure sealant is effective and durable Identify leaks in marriage line using a blower door GA Wx Field Guide Georgia Environmental Finance Authority 117 of 486 February 06, 2019 Air Sealing > Walls > Manufactured Housing Walls 3.1101.3c - Marriage line air sealing Tools: 1. Reusable spray foam gun 2. Caulking gun 3. Utility knife 4. Tape measure 5. Square 6. Screw gun 7. Hammer 8. Prybar 9. Blower door 10. Chemical smoke dispenser Materials: 1. Caulk 2. Spray foam 3. Foam board 4. Screws You may need to remove trim to determine what type of sealing is needed at the marriage line. Some original installations use a compressed open-cell polyurethane foam sealing strip with excellent air sealing properties and will need little or no additional work. Other installations may feature fiberglass or other ineffective air sealing measures and require extensive caulking and foaming to reduce air infiltration. Use a blower door to pressurize the house and use smoke to pinpoint leak locations. 1 Identify leaks in marriage line using a blower door and smoke 2 Foam, caulk, and seal leaks between halves of double wide manufactured homes GA Wx Field Guide Georgia Environmental Finance Authority 118 of 486 February 06, 2019 Air Sealing > Windows and Doors > Maintenance, Repair, and Sealing 3.1201.5 - Manufactured Housing Windows and Doors Desired Outcome: Windows and doors are operable, sealed, and weathertight Note: 3.1201.5b - Lead paint assessment Desired Outcome: Windows and doors are operable, sealed, and weathertight Specification(s): Presence of lead-based paint in pre-1978 homes will be assumed unless testing confirms otherwise; documentation of testing results will be kept on file EPA's Renovation, Repair and Painting (RRP) Program Rule (40 CFR Part 745) in pre-1978 homes and proposed changes to this rule (Federal Register/Vol. 75, No. 87/May 6, 2010) will be complied with, to be superseded by any subsequent final rulemaking or any more stringent state or federal standards Objective(s): Protect worker and occupant from potential lead hazards Best Practice In homes built before 1978, test paint before beginning renovation GA Wx Field Guide Georgia Environmental Finance Authority 119 of 486 February 06, 2019 Air Sealing > Windows and Doors > Maintenance, Repair, and Sealing 3.1201.5b - Lead paint assessment Tools: 1. Note: Mask must be worn during testing 2. LeadCheck test kit 3. Utility knife 4. Camera EPA RRP certification required to conduct Lead Paint assessment. 1 2 3 Clean tools and sample site to prevent Cut sample site at an angle to expose Break capsules and shake to mix contamination all older paint layers reagents. Swab sample site for 30 seconds 4 Check swab for reaction 5 Red indicates lead positive. White is lead negative 6 If negative, verify validity of test with provided calibration card 7 Lead in calibration card should test 8 Record test results to maintain GA Wx Field Guide Georgia Environmental Finance Authority 120 of 486 February 06, 2019 Air Sealing > Windows and Doors > Maintenance, Repair, and Sealing positive and turn red documentation 3.1201.5b - Lead paint assessment GA Wx Field Guide Georgia Environmental Finance Authority 121 of 486 February 06, 2019 Air Sealing > Windows and Doors > Maintenance, Repair, and Sealing 3.1201.5 - Manufactured Housing Windows and Doors Desired Outcome: Windows and doors are operable, sealed, and weathertight Note: 3.1201.5d - Air infiltration Desired Outcome: Windows and doors are operable, sealed, and weathertight Specification(s): Details that reduce air infiltration will be repaired, replaced, sealed, or installed (e.g., plastic gliders, weatherstripping, cranks, latches, locks, knobs, thresholds) Objective(s): Reduce air infiltration Before Light visible through door jamb indicates air infiltration Tools: 1. Drill/screwdriver 2. Utility knife 3. Tape measure 4. Caulk gun After After weatherstripping and adjustment of door in jamb, air infiltration is eliminated Materials: 1. Weatherstripping 2. Door sweep 3. Fasteners 4. Caulk 5. Felt corner pads Door or window replacement requires written approval from GEFA. GA Wx Field Guide Georgia Environmental Finance Authority 122 of 486 February 06, 2019 Air Sealing > Windows and Doors > Maintenance, Repair, and Sealing 3.1201.5d - Air infiltration Use an automatic (retractable) door sweep if a standard sweep interferes with a client's floor when adjusted to seal against the threshold. 1 Door jamb is missing any weatherstripping 2 Measure door jamb for weatherstripping 3 Install new weatherstrip 4 Measure bottom of door for door sweep 5 Install new door sweep 6 Adjust strike-plate and door jambs as necessary to secure a good fit 7 If properly adjusted, light should no longer be visible around door and air movement should no longer be detected GA Wx Field Guide Georgia Environmental Finance Authority 123 of 486 February 06, 2019 Air Sealing > Windows and Doors > Maintenance, Repair, and Sealing 3.1201.6 - Interior Storm Windows Desired Outcome: Minimize air infiltration through existing leaky windows while maintaining safe egress for occupants Note: 3.1201.6b - Fixed storm window Desired Outcome: Minimize air infiltration through existing leaky windows while maintaining safe egress for occupants Specification(s): Fixed interior storm windows will not be installed in egress locations Objective(s): Safety Unsafe Do not install fixed storm windows in bedroom windows designated as egress locations Safe Fixed storm windows may be installed in non-egress locations only Storm windows installed in egress (bedroom) windows must be operable or removable, and conform to the following standard: Voluntary Standard Egress Window Systems for Utilization in Manufactured Housing, AAMA 1704-85 GA Wx Field Guide Georgia Environmental Finance Authority 124 of 486 February 06, 2019 Air Sealing > Windows and Doors > Repairing/Replacing Cracked and Broken Glass 3.1202.3 - Replacing Damaged Window Glass in Manufactured Housing Desired Outcome: Glass complete and intact Note: 3.1202.3b - Lead paint assessment Desired Outcome: Glass complete and intact Specification(s): Presence of lead-based paint in pre-1978 homes will be assumed unless testing confirms otherwise; documentation of testing results will be kept on file EPA's Renovation, Repair and Painting (RRP) Program Rule (40 CFR Part 745) in pre-1978 homes and proposed changes to this rule (Federal Register/Vol. 75, No. 87/May 6, 2010) will be complied with, to be superseded by any subsequent final rulemaking or any more stringent state or federal standards Objective(s): Protect worker and occupant from potential lead hazards EPA RRP certification required to conduct Lead Paint assessment. GA Wx Field Guide Georgia Environmental Finance Authority 125 of 486 February 06, 2019 Air Sealing > Windows and Doors > Replacement 3.1203.3 - Replacement of Manufactured Housing Windows and Doors Desired Outcome: Smooth operation and an airtight and weathertight fit of replacement windows and doors Note: 3.1203.3b - Lead paint assessment Desired Outcome: Smooth operation and an airtight and weathertight fit of replacement windows and doors Specification(s): Presence of lead-based paint in pre-1978 homes will be assumed unless testing confirms otherwise; documentation of testing results will be kept on file EPA's Renovation, Repair and Painting (RRP) Program Rule (40 CFR Part 745) in pre-1978 homes and proposed changes to this rule (Federal Register/Vol. 75, No. 87/May 6, 2010) will be complied with, to be superseded by any subsequent final rulemaking or any more stringent state or federal standards Objective(s): Protect worker and occupant from potential lead hazards EPA RRP certification required to conduct Lead Paint assessment. GA Wx Field Guide Georgia Environmental Finance Authority 126 of 486 February 06, 2019 Air Sealing > Windows and Doors > Replacement 3.1203.3 - Replacement of Manufactured Housing Windows and Doors Desired Outcome: Smooth operation and an airtight and weathertight fit of replacement windows and doors Note: 3.1203.3f - Safety Desired Outcome: Smooth operation and an airtight and weathertight fit of replacement windows and doors Specification(s): Egress windows will only be replaced with egress windows Objective(s): Provide safe egress for occupants Safe Egress window in bedroom of manufactured house Windows installed in egress (bedroom) windows must conform to the following standard: Voluntary Standard Egress Window Systems for Utilization in Manufactured Housing, AAMA 1704-85 GA Wx Field Guide Georgia Environmental Finance Authority 127 of 486 February 06, 2019 Air Sealing > Floors > Penetrations 3.1301.1 - Electrical, HVAC, Plumbing, Gas, Dryer Vent, and General Penetrations Through Bottom Board Desired Outcome: Penetrations sealed to minimize air leakage and moisture movement between unconditioned and conditioned space Note: 3.1301.1d - Bottom board penetrations Desired Outcome: Penetrations sealed to minimize air leakage and moisture movement between unconditioned and conditioned space Specification(s): Combustion air supplies will be labeled for identification and will not be blocked or sealed Penetrations will be sealed to meet both the specific characteristics of the bottom board material and the characteristics (hole size and type) of the penetrations (e.g., electrical, PVC, gas line, dryer vent) The patch will not bend, sag, or move once installed Objective(s): Ensure combustion equipment is not compromised Minimize air leakage around penetrations GA Wx Field Guide Georgia Environmental Finance Authority 128 of 486 February 06, 2019 Air Sealing > Floors > Penetrations 3.1301.1d - Bottom board penetrations Before Unsealed penetration through bottom board After Properly sealed penetration through manufactured home bottom board and at floor Tools: 1. Outward clinching (stitch) stapler 2. Utility knife 3. Cordless driver/drill 4. Reusable foam gun 5. Caulking gun 6. Nail gun Materials: 1. Belly/bottom board fabric 2. Belly/bottom board repair tape 3. Staples 4. Screws 5. Foam board 6. 1X2 nailers 7. Spray foam sealant 8. High quality exterior caulk 1 Label combustion air inlets with the words, "DO NOT SEAL" 2 Seal penetrations THROUGH THE BELLY with compatible materials like foam board, belly board, or Flex Mend (tm) GA Wx Field Guide Georgia Environmental Finance Authority 129 of 486 February 06, 2019 Air Sealing > Floors > Penetrations 3.1301.2 - Electrical, HVAC, Plumbing, Gas, Dryer Vent, and General Penetrations Through Flooring Desired Outcome: Penetrations sealed to minimize air leakage and moisture movement between unconditioned and conditioned space; all repairs will maintain structural integrity 3.1301.2b - Floor air sealing (decking, subfloor, floor decking) Desired Outcome: Penetrations sealed to minimize air leakage and moisture movement between unconditioned and conditioned space; all repairs will maintain structural integrity Specification(s): Backing or infill will be provided as needed to meet the specific characteristics of the selected sealant and the characteristics of the penetration The backing or infill will not bend, sag, or move once installed Objective(s): Ensure resulting closure is permanent and supports expected load Ensure sealant is effective and durable Before Gaps around floor penetrations, such as plumbing, HVAC, and electrical Tools: 1. Headlamp After Gaps should be sealed to maintain air barrier Materials: 1. Backer rod 2. Sealant GA Wx Field Guide Georgia Environmental Finance Authority 130 of 486 February 06, 2019 Air Sealing > Floors > Penetrations 3.1301.2b - Floor air sealing (decking, subfloor, floor decking) 1 2 Prepare work space by removing any Infill with backer rod insulation 3 Apply appropriate caulking to ensure backing/infill does not move 4 Visually inspect to verify no gaps remain GA Wx Field Guide Georgia Environmental Finance Authority 131 of 486 February 06, 2019 Air Sealing > Floors > Penetrations 3.1301.2 - Electrical, HVAC, Plumbing, Gas, Dryer Vent, and General Penetrations Through Flooring Desired Outcome: Penetrations sealed to minimize air leakage and moisture movement between unconditioned and conditioned space; all repairs will maintain structural integrity 3.1301.2c - Sealant selection Desired Outcome: Penetrations sealed to minimize air leakage and moisture movement between unconditioned and conditioned space; all repairs will maintain structural integrity Specification(s): Sealants will be used to fill holes no larger than recommended by manufacturer specifications Sealants will be compatible with all adjoining surfaces Sealants will be continuous and meet fire barrier specifications, if required Objective(s): Ensure sealant meets or exceeds the performance characteristics of the surrounding materials Bad Practice Avoid sealants that do not allow for expansion between dissimilar materials Tools: 1. Caulk gun 2. Spray foam gun Best Practice Flexible sealants compensate for differential expansion and maintain a seal Materials: 1. Caulk 2. Spray foam GA Wx Field Guide Georgia Environmental Finance Authority 132 of 486 February 06, 2019 Air Sealing > Floors > Penetrations 3.1301.2c - Sealant selection Caulking can be used to span gaps up Spray foam can be used to span gaps Check manufacturer specifications to to 1/4 inch up to 3 inches verify spanning capabilities Also check manufacturer specs for incompatibility with intended surfaces GA Wx Field Guide Georgia Environmental Finance Authority 133 of 486 February 06, 2019 Air Sealing > Floors > Penetrations 3.1301.2 - Electrical, HVAC, Plumbing, Gas, Dryer Vent, and General Penetrations Through Flooring Desired Outcome: Penetrations sealed to minimize air leakage and moisture movement between unconditioned and conditioned space; all repairs will maintain structural integrity 3.1301.2d - Floor repair Desired Outcome: Penetrations sealed to minimize air leakage and moisture movement between unconditioned and conditioned space; all repairs will maintain structural integrity Specification(s): Floor repair material will meet or exceed strength of existing floor material Repair will span from joist to joist and blocking added as needed to support floor Patches smaller than 144 square inches will not require repairs from joist to joist Floor repair material will be glued, fastened, and air sealed Objective(s): Ensure floor is structurally sound Minimize air leakage Before After Remove floor coverings from damaged area Completed floor repair GA Wx Field Guide Georgia Environmental Finance Authority 134 of 486 February 06, 2019 Air Sealing > Floors > Penetrations 3.1301.2d - Floor repair Tools: 1. Circular saw 2. Reciprocating saw 3. Caulking gun 4. Cordless driver/drill 5. Framing square 6. Speed square 7. Utility knife 8. Sawhorses 9. Clamps 10. Jig saw or keyhole saw 11. Paddle bits to drill starter holes in floor Materials: 1. 5/8" or 3/4" oriented strand board or plywood subflooring 2. Polyurethane caulk 3. Construction adhesive 4. 2" deck screws 5. 3" deck screws 6. 8-penny galvanized ring shank or spiral shank nails 7. 16-penny galvanized ring shank or spiral shank nails 8. 2X4, or 2X6 blocking material for nailers 9. Air sealing foam (one- or two-part SPF) 10. Belly repair tape Paddle bits may be used to drill starter holes at the corners of the area to be patched. Cut the new patch 1/4" shorter than the hole in both length and width to allow room for expansion and contraction. Make sure to cut the patch so that the strength axis is perpendicular to the joists (the strong direction in plywood and OSB is parallel to the 8' length). 1 Carefully remove trim and floor coverings from area to be repaired 2 3 Mark the joist locations on either side Cut out damaged area even with the of the damaged area inside edges of the floor joists 4 5 GA Wx Field Guide Georgia Environmental Finance Authority 135 of 486 6 February 06, 2019 Air Sealing > Floors > Penetrations 3.1301.2d - Floor repair Cut four 2X4 blocks to support the patch Install nailers flat against the joists. Make the patch 1/4" smaller than the Finish by toenailing or screwing 2X4s opening in length and width to allow between the joists for expansion. 7 Apply subfloor adhesive to nailers 8 Fasten with 2" deck screws GA Wx Field Guide Georgia Environmental Finance Authority 136 of 486 February 06, 2019 Air Sealing > Floors > Penetrations 3.1301.2 - Electrical, HVAC, Plumbing, Gas, Dryer Vent, and General Penetrations Through Flooring Desired Outcome: Penetrations sealed to minimize air leakage and moisture movement between unconditioned and conditioned space; all repairs will maintain structural integrity 3.1301.2f - High temperature application Desired Outcome: Penetrations sealed to minimize air leakage and moisture movement between unconditioned and conditioned space; all repairs will maintain structural integrity Specification(s): Only noncombustible materials will be used in contact with chimneys, combustion exhaust vents, and flues Objective(s): Prevent a fire hazard Before Gaps around floor penetrations allow air and moisture movement After Use non-combustible materials, like 26-gauge steel and high-temp caulk Tools: 1. Drill/screwdriver 2. Caulk gun 3. Metal snips Materials: 1. High-temperature caulk 2. Non-combustible rigid material (ex: aluminum or steel flashing, cement board) Spray foam sealant is not allowed in high-temperature applications, even if labeled as fire block GA Wx Field Guide Georgia Environmental Finance Authority 137 of 486 February 06, 2019 Air Sealing > Floors > Penetrations 3.1301.2f - High temperature application or fire foam, and regardless of being colored pink or orange. 1 Prepare work area by removing any insulation and debris 2 3 Use high-temperature caulking (600F Apply first ring of caulking to match min) shape of opening 4 Apply second ring of caulking to size and shape of rigid material 5 Fasten rigid material and apply additional caulking 6 Fasten rigid material to cover penetration and seal against flue with caulk GA Wx Field Guide Georgia Environmental Finance Authority 138 of 486 February 06, 2019 Air Sealing > Floors > Floor Framing 3.1302.1 - Floor Framing--Bay Window Desired Outcome: Floor/framing around bay windows sealed and weathertight Note: 3.1302.1b - Lead paint assessment Desired Outcome: Floor/framing around bay windows sealed and weathertight Specification(s): Presence of lead-based paint in pre-1978 homes will be assumed unless testing confirms otherwise; documentation of testing results will be kept on file EPA's Renovation, Repair and Painting (RRP) Program Rule (40 CFR Part 745) in pre-1978 homes and proposed changes to this rule (Federal Register/Vol. 75, No. 87/May 6, 2010) will be complied with, to be superseded by any subsequent final rulemaking or any more stringent state or federal standards Objective(s): Protect worker and occupant from potential lead hazards Best Practice In homes built before 1978, test paint before beginning renovation GA Wx Field Guide Georgia Environmental Finance Authority 139 of 486 February 06, 2019 Air Sealing > Floors > Floor Framing 3.1302.1b - Lead paint assessment Tools: 1. Note: Mask must be worn during testing 2. LeadCheck test kit 3. Utility knife 4. Camera EPA RRP certification required to conduct Lead Paint assessment. GA Wx Field Guide Georgia Environmental Finance Authority 140 of 486 February 06, 2019 Air Sealing > Basements and Crawl Spaces > Special Considerations 3.1488.2 - Skirting Manufactured Homes Desired Outcome: Wind, weather, debris, and pests are excluded from the underside of the home Note: 3.1488.2a - Work assessment Desired Outcome: Wind, weather, debris, and pests are excluded from the underside of the home Specification(s): Installer prework assessment will be conducted to determine: Type (ventilated or unventilated, insulated or noninsulated) Extent of repair/replacement Accessibility Moisture and drainage Structural integrity of foundation (e.g., piers and supports) Structural integrity of perimeter rail/rim joist Integrity of existing skirting support material Presence of infestation or pests Problems will be corrected before skirting work begins Objective(s): Ensure work space is safe and ready for repair or installation Verify scope of work GA Wx Field Guide Georgia Environmental Finance Authority 141 of 486 February 06, 2019 Air Sealing > Basements and Crawl Spaces > Special Considerations 3.1488.2 - Skirting Manufactured Homes Desired Outcome: Wind, weather, debris, and pests are excluded from the underside of the home Note: 3.1488.2b - Repair and installation Desired Outcome: Wind, weather, debris, and pests are excluded from the underside of the home Specification(s): Manufacturer specifications will be followed when applicable No exposed wood will be left unfinished (e.g., wood to be painted, sealed, treated) If framing is required for skirting, framing will be structurally sound Skirting will be installed to allow for movement (e.g., no screws or nails directly through panels) Skirting installation will allow for expansion, contraction, and frost heaving Objective(s): Match existing skirting Provide resistance from outdoor elements Limit pest access GA Wx Field Guide Georgia Environmental Finance Authority 142 of 486 February 06, 2019 Air Sealing > Basements and Crawl Spaces > Special Considerations 3.1488.2 - Skirting Manufactured Homes Desired Outcome: Wind, weather, debris, and pests are excluded from the underside of the home Note: 3.1488.2c - Venting Desired Outcome: Wind, weather, debris, and pests are excluded from the underside of the home Specification(s): Venting will be in accordance with local climate conditions or code as required Objective(s): Achieve and maintain building durability GA Wx Field Guide Georgia Environmental Finance Authority 143 of 486 February 06, 2019 Air Sealing > Basements and Crawl Spaces > Special Considerations 3.1488.2 - Skirting Manufactured Homes Desired Outcome: Wind, weather, debris, and pests are excluded from the underside of the home Note: 3.1488.2f - Materials Desired Outcome: Wind, weather, debris, and pests are excluded from the underside of the home Specification(s): Like material and/or compatible materials will be used for repairs (e.g., galvanized metal, aluminum, alkaline copper quaternary treated lumber) Selected materials will be corrosion resistant Objective(s): Achieve/increase durability GA Wx Field Guide Georgia Environmental Finance Authority 144 of 486 February 06, 2019 Air Sealing > Basements and Crawl Spaces > Special Considerations 3.1488.2 - Skirting Manufactured Homes Desired Outcome: Wind, weather, debris, and pests are excluded from the underside of the home Note: 3.1488.2g - Fasteners Desired Outcome: Wind, weather, debris, and pests are excluded from the underside of the home Specification(s): Like material and/or compatible materials will be used for repairs (e.g., galvanized metal, aluminum, alkaline copper quaternary treated lumber) Fasteners will be corrosion resistant Objective(s): Achieve/increase durability GA Wx Field Guide Georgia Environmental Finance Authority 145 of 486 February 06, 2019 Air Sealing > Basements and Crawl Spaces > Special Considerations 3.1488.2 - Skirting Manufactured Homes Desired Outcome: Wind, weather, debris, and pests are excluded from the underside of the home Note: 3.1488.2h - Structural Desired Outcome: Wind, weather, debris, and pests are excluded from the underside of the home Specification(s): Existing skirting support material will be structurally sound and completely intact; any damaged framing will be replaced Objective(s): Provide adequate support GA Wx Field Guide Georgia Environmental Finance Authority 146 of 486 February 06, 2019 Air Sealing > Basements and Crawl Spaces > Special Considerations 3.1488.2 - Skirting Manufactured Homes Desired Outcome: Wind, weather, debris, and pests are excluded from the underside of the home Note: 3.1488.2i - Skirting stiffener/high wind support Desired Outcome: Wind, weather, debris, and pests are excluded from the underside of the home Specification(s): Skirting support (e.g., vinyl blowout rods, horizontal bracing for other types) will be placed in highwind locations Objective(s): Increase strength to resist wind loading GA Wx Field Guide Georgia Environmental Finance Authority 147 of 486 February 06, 2019 Air Sealing > Basements and Crawl Spaces > Special Considerations 3.1488.2 - Skirting Manufactured Homes Desired Outcome: Wind, weather, debris, and pests are excluded from the underside of the home Note: 3.1488.2j - Occupant education Desired Outcome: Wind, weather, debris, and pests are excluded from the underside of the home Specification(s): Occupants will be educated on maintenance of skirting (e.g., floating panels are not tightly screwed to framing, string trimmers may damage skirting) Objective(s): Increase durability GA Wx Field Guide Georgia Environmental Finance Authority 148 of 486 February 06, 2019 Air Sealing > Ducts > Duct Preparation 3.1601.4 - Support for Horizontal, Suspended Ducts Desired Outcome: Ducts and plenums properly supported Note: 3.1601.4a - Support (applies to all duct types) Desired Outcome: Ducts and plenums properly supported Specification(s): Flexible and duct board ducts and plenums will be supported where feasible in accordance with flex duct manufacturer specifications and local codes Support materials will be applied in a way that does not crimp ductwork or cause the interior dimensions of the ductwork to be less than specified (e.g., ceiling, framing, strapping) Metal ducts will be supported by metal strapping, rods, or other materials, where feasible Objective(s): Eliminate falling and sagging GA Wx Field Guide Georgia Environmental Finance Authority 149 of 486 February 06, 2019 Air Sealing > Ducts > Duct Preparation 3.1601.5 - Preparation and Mechanical Fastening Desired Outcome: Ducts and plenums properly fastened to prevent leakage Note: 3.1601.5e - Duct board to flexible duct Desired Outcome: Ducts and plenums properly fastened to prevent leakage Specification(s): Metal take-off collar specifically designed for the thickness of the duct board will be used All finger tabs will be bent down securely Finger tabs will be longer than the thickness of the duct board and the shank will not extend beyond the thickness of the duct board There will be an internal metal backer inside the duct board through which three evenly spaced screws can be secured; the metal backer will not interfere with air flow Objective(s): Ensure durable joints Prevent the collar from moving into or out of the duct board or slipping Bad Practice Flex duct improperly attached to duct board. No starting collar is installed. Best Practice Flex duct, starting collar, and backer ring installed and sealed to duct board GA Wx Field Guide Georgia Environmental Finance Authority 150 of 486 February 06, 2019 Air Sealing > Ducts > Duct Preparation 3.1601.5e - Duct board to flexible duct Tools: 1. Cordless driver/drill 2. 1/4" nut driver bit 3. Disposable brushes 4. Tin snips 5. Utility knife 6. Zip tie tensioning tool Materials: 1. Galvanized metal backer rings 2. Tabbed starting collars 3. Rubber gloves 4. Zip ties 5. Duct sealing mastic 6. Fiberglass mesh tape Make sure to use a starting collar that is made for the thickness of the duct board you are using. R-6 duct board is 1-1/2" thick. The correct starting collar would therefore have 1-1/2" of solid metal between the shoulder that fits against the outside of the duct board and the base of the tabs. You may need to cut a slot in the duct board to slide the backer ring through. Use at least three equally spaced screws to fasten the starting collar to the backer ring. 1 Gather materials 2 3 Place backer ring inside duct board. Fasten the collar to the backer ring by Insert collar and bend tabs into place. driving at least three equally spaced screws through the collar, duct board 4 5 Coat joint between starting collar and duct board with mastic. Liberally coat the metal collar where flex attaches Slide flex duct liner over masticcoated metal collar 6 Secure with properly tensioned zip tie. GA Wx Field Guide Georgia Environmental Finance Authority 151 of 486 February 06, 2019 Air Sealing > Ducts > Duct Preparation 3.1601.5e - Duct board to flexible duct 7 Coat seam with mastic 8 Pull insulation over duct liner and secure with a zip tie. GA Wx Field Guide Georgia Environmental Finance Authority 152 of 486 February 06, 2019 Air Sealing > Ducts > Duct Preparation 3.1601.5 - Preparation and Mechanical Fastening Desired Outcome: Ducts and plenums properly fastened to prevent leakage Note: 3.1601.5f - Duct board plenum to air handler cabinet Desired Outcome: Ducts and plenums properly fastened to prevent leakage Specification(s): Flange/c-channel will be fastened with screws with the duct board installed between c-channel flanges Duct board plenum will be connected to air handler plenum with flexible duct in upflow units Objective(s): Ensure durable joints Best Practice Duct board plenum fastened with C-channel and screws GA Wx Field Guide Georgia Environmental Finance Authority 153 of 486 February 06, 2019 Air Sealing > Ducts > Duct Preparation Tools: 1. Screw gun 2. Tin snips 3. Utility knife 4. Tape measure 5. Square 3.1601.5f - Duct board plenum to air handler cabinet Materials: 1. Fiberglass duct board 2. C-channel (same width as duct board) 3. Sheet metal screws longer than the duct board thickness 4. Foil tape (for assembling duct board) 5. Mastic 6. Mesh tape (for gaps larger than 1/4") 7. Flex duct 8. Zip ties 9. Starting collar 10. Backing ring (fits inside duct board and fastens to starting collar) GA Wx Field Guide Georgia Environmental Finance Authority 154 of 486 February 06, 2019 Air Sealing > Ducts > Duct Preparation 3.1601.5 - Preparation and Mechanical Fastening Desired Outcome: Ducts and plenums properly fastened to prevent leakage Note: 3.1601.5h - Boot to gypsum Desired Outcome: Ducts and plenums properly fastened to prevent leakage Specification(s): If accessible, boot hanger will be fastened to adjacent framing with screws or nails Boot will be connected to boot hanger with screws If inaccessible, boot will be fastened to gypsum with a durable, adhesive sealant Objective(s): Ensure durable joints Register boot fastened to framing and sealed to gypsum with spray foam GA Wx Field Guide Georgia Environmental Finance Authority 155 of 486 February 06, 2019 Air Sealing > Ducts > Duct Preparation 3.1601.5h - Boot to gypsum Tools: 1. Caulking gun or foam gun 2. Cordless driver/drill Materials: 1. Polyurethane caulk 2. Mastic and mesh tape (for gaps larger than 1/4") 3. Screws 4. Fiberglass mesh tape (for gaps larger than 1/4") 5. Disposable brushes 6. Spray foam sealant Fasten boot hangers to adjacent framing, or screw through the boot into adjacent framing. Polyurethane caulk is a durable adhesive, and can accomodate up to 50% expansion and contraction. Mastic and mesh tape also form a strong, permanent seal. Spray foam may be used to seal boots into the opening once the boot is fastened in place 1 Remove diffuser 2 3 Caulk the boot to the gypsum board. Angle the tip forward and force caulk into the joint Wipe away excess caulk. Wear proper personal protective equipment (PPE) and use caution when working around sharp edges 4 Wipe caulk into the joint and smooth it as you go GA Wx Field Guide Georgia Environmental Finance Authority 156 of 486 February 06, 2019 Air Sealing > Ducts > Duct Preparation 3.1601.5 - Preparation and Mechanical Fastening Desired Outcome: Ducts and plenums properly fastened to prevent leakage Note: 3.1601.5i - Duct board to flex Desired Outcome: Ducts and plenums properly fastened to prevent leakage Specification(s): Metal take-off collar with a hip and an internal metal backer will be used Take-offs will be in accordance code requirements Objective(s): Ensure durable joints Bad Practice Improper attachment of flex to duct board After Flex duct correctly installed and sealed to duct board GA Wx Field Guide Georgia Environmental Finance Authority 157 of 486 February 06, 2019 Air Sealing > Ducts > Duct Preparation 3.1601.5i - Duct board to flex Select a backer ring and flex duct installation tools Cut the proper size hole in duct board Select starting collar with tabs matching the thickness of the duct board Insert the starting collar, bend tabs over and install at least 3 screws through the collar, duct board, and backer ring Starting collar with tabs bent over and Apply mastic liberally and install flex screws through the duct board and duct backer ring GA Wx Field Guide Georgia Environmental Finance Authority 158 of 486 February 06, 2019 Air Sealing > Ducts > Duct Sealing 3.1602.3 - Proprietary Spray Application Desired Outcome: Ducts and plenums sealed to prevent leakage 3.1602.3a - Internal or external application Desired Outcome: Ducts and plenums sealed to prevent leakage Specification(s): Sealant will be applied in accordance with manufacturer specifications, as well as UL 181M, NFPA 90A, and NFPA 90B Objective(s): Reduce duct leakage GA Wx Field Guide Georgia Environmental Finance Authority 159 of 486 February 06, 2019 Air Sealing > Ducts > Duct Sealing 3.1602.8 - Supply Plenum (Furnace to Trunk Duct Connection) in Both Upflow and Downflow Air Handler Configurations Desired Outcome: Deliver all air from air handler to the trunk duct without leakage or restriction Note: 3.1602.8b - Preparation Desired Outcome: Deliver all air from air handler to the trunk duct without leakage or restriction Specification(s): Debris will be removed Surface will be prepared for work (e.g., remove tape, oil) Floor will be prepared to receive the appropriately sized plenum Objective(s): Provide unobstructed path for work access and air flow Ensure adhesion of materials to be installed Provide a properly sized plenum to maximize distribution of air flow (equal to the furnace discharge) After Closet prepared for furnace installation GA Wx Field Guide Georgia Environmental Finance Authority 160 of 486 February 06, 2019 Air Sealing > Ducts > Duct Sealing Tools: 1. Shop vac 2. Scraper 3. Bench duster 4. Dust pan Materials: 1. Rags 3.1602.8b - Preparation Dust walls and floor of cabinet. Sweep Vacuum cabinet clean debris into piles for pickup. Wipe down walls and floor Inspect plenum for damage, then clean, scrape, and seal Scrape loose material from insides of Apply mastic to inside seams of cabinet plenum GA Wx Field Guide Georgia Environmental Finance Authority 161 of 486 February 06, 2019 Air Sealing > Ducts > Duct Sealing 3.1602.8 - Supply Plenum (Furnace to Trunk Duct Connection) in Both Upflow and Downflow Air Handler Configurations Desired Outcome: Deliver all air from air handler to the trunk duct without leakage or restriction Note: 3.1602.8c - Plenum rebuild or repair Desired Outcome: Deliver all air from air handler to the trunk duct without leakage or restriction Specification(s): Plenum will be rebuilt or repaired using compatible materials and will be: Mechanically fastened Sealed Durable Structurally sound Insulated Equipped with a vapor retarder where climate appropriate If possible, flow diverter or turning vanes will be installed for air flow and/or balancing (e.g., bullhead Ts, offset air handler) Objective(s): Minimize restrictions Maximize air flow and air distribution Minimize moisture issues Prevent condensation on plenum GA Wx Field Guide Georgia Environmental Finance Authority 162 of 486 February 06, 2019 Air Sealing > Ducts > Duct Sealing 3.1602.8c - Plenum rebuild or repair Best Practice Whenever possible, install turning vanes in plenums to reduce turbulence and improve airflow In Progress Rebuilding and sealing a leaky existing plenum Materials: 1. Starting collars and flanges 2. Zip ties 3. Mastic duct sealant 4. Fiberglass mesh tape 5. Sheet metal screws 6. Turning vanes 7. Duct board Using turning vanes reduces turbulence and increases air flow. Use mastic and mesh tape on the outside of duct board plenums. Properly install metal starting collars to duct board and flex duct to metal collars (see spec 3.1601.5e for detail) GA Wx Field Guide Georgia Environmental Finance Authority 163 of 486 February 06, 2019 Air Sealing > Ducts > Duct Sealing 3.1602.9 - Crossover Ducts Desired Outcome: Deliver all air from trunk to trunk without leakage or restriction Note: 3.1602.9g - Combustion Appliance Zone (CAZ) testing Desired Outcome: Deliver all air from trunk to trunk without leakage or restriction Specification(s): CAZ testing will be performed where combustion appliances are utilized Objective(s): Identify unsafe equipment operating conditions Best Practice Complete combustion appliance zone testing to ensure a healthy, safe environment Tools: 1. Manometer 2. Mirror 3. Chemical smoke puffer 4. Stopwatch or watch with second hand 5. Gas leak detector 6. Combustion analyzer 7. 1/4" air line tubing GA Wx Field Guide Georgia Environmental Finance Authority 164 of 486 February 06, 2019 Air Sealing > Ducts > Duct Sealing 3.1602.10 - Hard and Flex Branch Ducts Desired Outcome: Deliver air from trunk to termination (register/diffuser) without leakage Note: 3.1602.10e - Combustion Appliance Zone (CAZ) testing Desired Outcome: Deliver air from trunk to termination (register/diffuser) without leakage Specification(s): CAZ testing will be performed where combustion appliances are utilized Objective(s): Identify unsafe equipment operating conditions GA Wx Field Guide Georgia Environmental Finance Authority 165 of 486 February 06, 2019 Air Sealing > Ducts > Duct Sealing 3.1602.11 - Air Sealing System Desired Outcome: Ducts and plenums sealed to prevent leakage Note: 3.1602.11a - New component to new component sealant selection Desired Outcome: Ducts and plenums sealed to prevent leakage Specification(s): Any closure system used will meet or exceed applicable standards Objective(s): Ensure effectiveness of air sealing system Mastic sealant is an approved, durable, and effective sealant GA Wx Field Guide Georgia Environmental Finance Authority 166 of 486 February 06, 2019 Air Sealing > Ducts > Duct Sealing 3.1602.11a - New component to new component sealant selection Tools: 1. Utility knife 2. Disposable brushes Materials: 1. UL 181 B-FX tape (cover with mastic after assembly) 2. Fiberglass mesh tape (use, along with mastic, to cover gaps wider than 1/4-inch and to add strength to assemblies 3. Mastic (air duct sealant) labeled UL 181 B-M 4. Spray polyurethane foam Use tape labeled 181 B-FX and/or mastic labeled 181 BM. Seal and mechanically fasten all duct connections to metal flanges. Fasten round metal ducts with at least three screws equally spaced around the diameter, and make sure that the ducts and fittings are inserted at least 1". DO NOT USE unlisted duct tape as a sealant on any duct. Exceptions: 1. Spray polyurethane foam shall be permitted to be applied without additional joint seals. 2. Where a duct connection is made that is partially inaccessible, three screws or rivets shall be equally spaced on the exposed portion of the joint so as to prevent a hinge effect. 3. Continuously welded and locking-type longitudinal joints and seams in ducts operating at static pressures less than 2 inches of water column (500 Pa) pressure classification shall not require additional closure systems. " 1 2 Use fiberglass mesh tape to cover Coat seams with mastic (air duct gaps; coat with at least 2mm of mastic sealant) conforming to standard UL 181 B-M 3 Use tape to assemble joints, then coat with at least 2mm of mastic GA Wx Field Guide Georgia Environmental Finance Authority 167 of 486 February 06, 2019 Air Sealing > Ducts > Duct Sealing 3.1602.11 - Air Sealing System Desired Outcome: Ducts and plenums sealed to prevent leakage Note: 3.1602.11c - Existing component to existing component Desired Outcome: Ducts and plenums sealed to prevent leakage Specification(s): Duct surface to receive sealant will be cleaned Fiberglass mesh and mastic will overlap temporary tape by at least 1" on all sides Seams, cracks, joints, holes, and penetrations larger than " will be repaired using rigid duct material Fiberglass mesh and mastic will overlap repair joint by at least 1" on all sides Fiberglass mesh and mastic will be the primary seal Objective(s): Eliminate air leakage into or out of ducts and plenums Ensure adhesion of primary seal (fiberglass mesh and mastic) to the duct Reinforce seal Support mastic and fiberglass mesh during curing GA Wx Field Guide Georgia Environmental Finance Authority 168 of 486 February 06, 2019 Air Sealing > Ducts > Duct Sealing 3.1602.11c - Existing component to existing component Before Unsealed joints and connections need to be sealed to stop air leaks, improve durability, and reduce health risks After Sealed ductwork connections help prevent leakage Tools: 1. Disposable brushes 2. Utility knife Materials: 1. Mastic 2. Fiberglass mesh tape Fiberglass mesh tape and mastic sealant shall form the primary seal. Polyurethane spray foam may not be used in place of mesh tape and mastic. 1 Prepare work area by assessing any safety concerns and cleaning duct surface 2 3 Wrap joint with fiberglass mesh tape Apply UL 181 mastic to seal joint GA Wx Field Guide Georgia Environmental Finance Authority 169 of 486 February 06, 2019 Air Sealing > Ducts > Duct Sealing 3.1602.12 - Air Sealing System Components Desired Outcome: Ducts and plenums sealed to prevent leakage Note: 3.1602.12a - Duct boot to interior surface Desired Outcome: Ducts and plenums sealed to prevent leakage Specification(s): Gaps between boot and gypsum less than a " will be sealed using mastic or appropriate flexible caulking Gypsum edge will be wetted before applying mastic Objective(s): Prevent air leakage Before Gaps around duct boots allow for leakage to and from the attic After Use a mesh in mastic system to seal duct boot to interior surface Tools: 1. Utility knife 2. Spray bottle 3. Putty knife Materials: 1. Mastic 2. Fiberglass mesh tape 3. Spray foam sealant 4. Caulk GA Wx Field Guide Georgia Environmental Finance Authority 170 of 486 February 06, 2019 Air Sealing > Ducts > Duct Sealing 3.1602.12a - Duct boot to interior surface 1 2 Remove grill to expose duct boot and Wet the edges of the drywall to gaps ensure a good bond 3 Cut mesh tape to fit around duct boot and cover gaps 4 5 Apply mastic over mesh tape to create Once mastic is set, grill can be heat resistant, durable bond replaced and mastic should not show GA Wx Field Guide Georgia Environmental Finance Authority 171 of 486 February 06, 2019 Air Sealing > Ducts > Duct Sealing 3.1602.12 - Air Sealing System Components Desired Outcome: Ducts and plenums sealed to prevent leakage Note: 3.1602.12b - Air handler cabinet outside conditioned space Desired Outcome: Ducts and plenums sealed to prevent leakage Specification(s): Joints will be sealed and cracks/holes not needed for proper function of unit will be sealed using removable sealant (e.g., foil tape) Objective(s): Reduce air leakage while maintaining accessibility Before Unnecessary holes in the air handler cabinet need to be sealed After Use removable foil tape to seal holes Materials: 1. Foil tape GA Wx Field Guide Georgia Environmental Finance Authority 172 of 486 February 06, 2019 Air Sealing > Ducts > Duct Sealing 3.1602.12b - Air handler cabinet outside conditioned space 1 Unnecessary holes in the air handler cabinet should be sealed 2 Removable foil tape should be used to seal 3 Fully cover holes with tape to seal completely GA Wx Field Guide Georgia Environmental Finance Authority 173 of 486 February 06, 2019 Air Sealing > Ducts > Duct Sealing 3.1602.13 - Return--Framed Platform Desired Outcome: The return duct is installed to prevent air leakage Note: 3.1602.13a - Preparation Desired Outcome: The return duct is installed to prevent air leakage Specification(s): Debris and dirt will be cleaned out of the return platform Objective(s): Allow for the application of rigid materials and sealants Before Dirty, unsealed return platform needs to be cleaned out before sealing Tools: 1. Shop vacuum In Progress Vacuum out debris and dirt from the return to prepare work area GA Wx Field Guide Georgia Environmental Finance Authority 174 of 486 February 06, 2019 Air Sealing > Ducts > Duct Sealing 3.1602.13 - Return--Framed Platform Desired Outcome: The return duct is installed to prevent air leakage Note: 3.1602.13b - Infill and backing Desired Outcome: The return duct is installed to prevent air leakage Specification(s): Backing or infill will be provided as needed to meet the specific characteristics of the selected material and the characteristics of the open space Backing or infill will not bend, sag, or move once installed Material will be rated for use in return duct systems Objective(s): Minimize hole size to ensure successful use of sealant Ensure closure is permanent and supports all loads (e.g., return air pressure) Ensure sealant does not fall out Before Leakage from air return into wall cavities should be eliminated In Progress Only materials rated for use in higher temperature areas should be used GA Wx Field Guide Georgia Environmental Finance Authority 175 of 486 February 06, 2019 Air Sealing > Ducts > Duct Sealing Tools: 1. Tape measure 2. Utility knife 3. Drill 4. Caulk gun 3.1602.13b - Infill and backing Materials: 1. Drywall 2. Fire-resistant caulk 3. Fasteners Do NOT use EPS or XPS foam board in air returns. GA Wx Field Guide Georgia Environmental Finance Authority 176 of 486 February 06, 2019 Air Sealing > Ducts > Duct Sealing 3.1602.13 - Return--Framed Platform Desired Outcome: The return duct is installed to prevent air leakage Note: 3.1602.13c - Sealant selection Desired Outcome: The return duct is installed to prevent air leakage Specification(s): Sealants will be compatible with their intended surfaces Sealants will be continuous and meet fire barrier specifications Objective(s): Select permanent sealant Ensure sealant meets or exceeds the performance characteristics of the surrounding materials Best Practice Sealants, like mesh and UL 181 mastic, meet IRC, ASTM, and UL specs Best Practice Caulk sealants will be continuous and compatible with surface Tools: 1. Caulk gun 2. Utility knife 3. Taping knife Materials: 1. Fiberglass mesh 2. Siliconized caulk 3. UL 181 mastic Wall and ceiling finishes will have a flame spread index of 200 or less and a smoke-developed index of 450 or less GA Wx Field Guide Georgia Environmental Finance Authority 177 of 486 February 06, 2019 Air Sealing > Ducts > Duct Sealing 3.1602.13c - Sealant selection GA Wx Field Guide Georgia Environmental Finance Authority 178 of 486 February 06, 2019 Air Sealing > Additions > Attached Additions 3.1701.1 - Holes, Penetrations, and Connection Seam Desired Outcome: The exterior of the seam is weathertight and connection between house and addition is properly sealed to minimize air leakage and moisture movement between unconditioned and conditioned space 3.1701.1g - Sealant selection Desired Outcome: The exterior of the seam is weathertight and connection between house and addition is properly sealed to minimize air leakage and moisture movement between unconditioned and conditioned space Specification(s): Sealants will be used to fill holes no larger than recommended by manufacturer specifications Sealants will be compatible with all adjoining surfaces Sealants will be continuous and meet fire barrier specifications, if required Objective(s): Create a permanent seal Ensure sealant meets or exceeds the performance characteristics of the surrounding materials Bad Practice Avoid sealants that do not allow for expansion between dissimilar materials Best Practice Flexible sealants compensate for differential expansion and maintain a seal GA Wx Field Guide Georgia Environmental Finance Authority 179 of 486 February 06, 2019 Air Sealing > Additions > Attached Additions Tools: 1. Caulk gun 2. Spray foam gun Materials: 1. Caulk 2. Spray foam 3.1701.1g - Sealant selection Caulking can be used to span gaps up Spray foam can be used to span gaps Check manufacturer specifications to to 1/4 inch up to 3 inches verify spanning capabilities Also check manufacturer specs for incompatibility with intended surfaces GA Wx Field Guide Georgia Environmental Finance Authority 180 of 486 February 06, 2019 Air Sealing > Additions > Attached Additions 3.1701.1 - Holes, Penetrations, and Connection Seam Desired Outcome: The exterior of the seam is weathertight and connection between house and addition is properly sealed to minimize air leakage and moisture movement between unconditioned and conditioned space 3.1701.1h - Floor repair Desired Outcome: The exterior of the seam is weathertight and connection between house and addition is properly sealed to minimize air leakage and moisture movement between unconditioned and conditioned space Specification(s): Floor repair material will meet or exceed strength of existing floor material Repair will span from joist to joist and blocking added as needed to support floor Patches smaller than 144 square inches will not require repairs from joist to joist Floor repair material will be glued, fastened, and air sealed Objective(s): Ensure floor is structurally sound Minimize air leakage Before Holes in the floor should be repaired GA Wx Field Guide Georgia Environmental Finance Authority 181 of 486 February 06, 2019 Air Sealing > Additions > Attached Additions 3.1701.1 - Holes, Penetrations, and Connection Seam Desired Outcome: The exterior of the seam is weathertight and connection between house and addition is properly sealed to minimize air leakage and moisture movement between unconditioned and conditioned space 3.1701.1j - Ceiling hole repair Desired Outcome: The exterior of the seam is weathertight and connection between house and addition is properly sealed to minimize air leakage and moisture movement between unconditioned and conditioned space Specification(s): Ceiling repair material must meet or exceed strength of existing ceiling material Ceiling repair must span from truss to truss or add blocking as needed for support The backing or infill will not bend, sag, or move once installed All accessible damaged vapor barriers will be repaired Penetrations through the air barrier must be repaired Objective(s): Ensure ceiling is structurally sound Minimize air leakage Ensure closure is permanent and supports expected wind and mechanical pressure loads Ensure sealant does not fall out GA Wx Field Guide Georgia Environmental Finance Authority 182 of 486 February 06, 2019 Air Sealing > Additions > Attached Additions 3.1701.1j - Ceiling hole repair Before Replace any missing insulation and repair holes in vapor barrier After Drywall patch before final sand and prime Tools: 1. 6-inch and 12-inch drywall taping knives 2. Sanding block or sanding sponge 3. Utility knife 4. Keyhole saw 5. Screw gun Materials: 1. Drywall or paneling 2. Fiberglass joint tape 3. Joint compound 4. Drywall screws or nails 5. Support material if needed (typically 1X4, 1X6, or 2X4 dimensional lumber) For small holes, enlarge to a rectangular shape and install 1 X 4 blocks above two edges of the hole. For larger holes, enlarge opening to centers of nearest trusses and fasten the patch to the framing. 1 Replace any missing insulation and repair holes in vapor barrier 2 3 Prepare the hole by cutting the edges Cut drywall and fasten in place clean and square. GA Wx Field Guide Georgia Environmental Finance Authority 183 of 486 February 06, 2019 Air Sealing > Additions > Attached Additions 4 Add joint tape and coat of joint compound 3.1701.1j - Ceiling hole repair GA Wx Field Guide Georgia Environmental Finance Authority 184 of 486 February 06, 2019 Air Sealing > Additions > Attached Additions 3.1701.1 - Holes, Penetrations, and Connection Seam Desired Outcome: The exterior of the seam is weathertight and connection between house and addition is properly sealed to minimize air leakage and moisture movement between unconditioned and conditioned space 3.1701.1k - High temperature application Desired Outcome: The exterior of the seam is weathertight and connection between house and addition is properly sealed to minimize air leakage and moisture movement between unconditioned and conditioned space Specification(s): Only noncombustible materials will be used in contact with chimneys, vents, and flues Objective(s): Prevent a fire hazard Before Gaps around floor penetrations allow air and moisture movement After Use non-combustible materials, like aluminum, steel, cement board, and hightemp caulk Tools: 1. Caulk gun 2. Metal snips 3. Drill/screwdriver Materials: 1. High-temperature caulk 2. Non-combustible material such as aluminum or galvanized steel flashing or cement board 3. Appropriate fasteners GA Wx Field Guide Georgia Environmental Finance Authority 185 of 486 February 06, 2019 Air Sealing > Additions > Attached Additions 3.1701.1k - High temperature application Spray foam sealant is not allowed in high-temperature applications, even if labeled as fire block or fire foam, and regardless of being colored pink or orange. 1 Prepare work area by removing any insulation and debris 2 3 Use high-temperature caulking (600F Apply first ring of caulking to match min) shape of opening 4 Apply second ring of caulking to size and shape of rigid material 5 Fasten rigid material and apply additional caulking 6 Fasten rigid material to cover penetration and seal against flue with caulk GA Wx Field Guide Georgia Environmental Finance Authority 186 of 486 February 06, 2019 Insulation > Attics > Above Roof Deck Insulation 4.1002.1 - Above Roof Deck Insulation: Preparation Desired Outcome: Roof covering removed and replaced to expose roof deck for installation of above roof deck insulation 4.1002.1b - Roof covering replacement Desired Outcome: Roof covering removed and replaced to expose roof deck for installation of above roof deck insulation Specification(s): New roof covering will be installed in accordance with manufacturer specifications and local building code requirements after installation of above roof deck insulation Objective(s): Install roof covering correctly Meet local code requirements GA Wx Field Guide Georgia Environmental Finance Authority 187 of 486 February 06, 2019 Insulation > Attics > Above Roof Deck Insulation 4.1002.2 - Above Deck Roof Deck Insulation: Installation Desired Outcome: Properly installed roof deck insulation 4.1002.2a - Sealing Desired Outcome: Properly installed roof deck insulation Specification(s): Holes, gaps, and penetrations in existing roof deck will be sealed Objective(s): Prevent air leaks GA Wx Field Guide Georgia Environmental Finance Authority 188 of 486 February 06, 2019 Insulation > Attics > Above Roof Deck Insulation 4.1002.2 - Above Deck Roof Deck Insulation: Installation Desired Outcome: Properly installed roof deck insulation 4.1002.2b - Installation Desired Outcome: Properly installed roof deck insulation Specification(s): Insulation will be installed according to manufacturer specifications without gaps, voids, compressions, misalignments, or wind intrusions Insulation will be installed to prescribed R-value Objective(s): Install insulation properly GA Wx Field Guide Georgia Environmental Finance Authority 189 of 486 February 06, 2019 Insulation > Attics > Above Roof Deck Insulation 4.1002.2 - Above Deck Roof Deck Insulation: Installation Desired Outcome: Properly installed roof deck insulation 4.1002.2c - Occupant education Desired Outcome: Properly installed roof deck insulation Specification(s): A dated receipt signed by the installer will be provided that includes: Insulation type Coverage area R-value Installed thickness and settled thickness (settled thickness required for loose-fill only) Number of bags installed in accordance with manufacturer specifications (for loose-fill only) Objective(s): Document job completion to contract specifications Confirm amount of insulation installed Comply with 16 CFR 460.17 GA Wx Field Guide Georgia Environmental Finance Authority 190 of 486 February 06, 2019 Insulation > Attics > Attic Ceilings 4.1003.8 - Installing Fiberglass Blown Insulation for Flat, Bowed, or Vaulted Ceilings (via Roof Side Lift) Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space 4.1003.8a - Attic, ceiling, and roof verification Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): All combustion appliance flues will be terminated to the outdoors and terminations will maintain proper clearance above snow loads A distance no less than 2" will be maintained between any combustion appliance flue and combustible materials, unless zero clearance flue is in place All ventilation systems will maintain a continuous connection and terminate to the outdoors All broken mushroom vents will be replaced or removed and sealed All plumbing stacks will be terminated to the outdoors Non-IC rated light fixtures will be replaced with airtight IC-rated fixtures All recessed lights will be labeled as having an air leakage rate no more than 2.0 CFM when tested in accordance with ASTM E 283 at a 75 pascals pressure differential All obvious ceiling penetrations will be sealed The space between combustion appliance flues and the ceiling will be sealed with fire-rated materials All roof, attic, and ceiling assemblies will be structurally sound; loose ceiling panels will be secured Temporary ceiling bracing will be recommended during the insulation installation process Dishing and pooling issues that allow standing water will be addressed GA Wx Field Guide Georgia Environmental Finance Authority 191 of 486 February 06, 2019 Insulation > Attics > Attic Ceilings 4.1003.8a - Attic, ceiling, and roof verification All known roof water leaks will be repaired before insulation installation Objective(s): Ensure occupant and worker safety Verify attic space is ready to insulate Ensure structural integrity of the roof and ceiling assembly Prevent intrusion of bulk moisture Prevent damage during the insulation installation process Before Roof leak, missing cap on vent After Properly connected and sealed roof vent Tools: 1. Scaffolding and ladders 2. Screw gun 3. Long, flat prybar 4. 5-in-one paint scraper tool 5. Flashlights and headlamps 6. Digital camera Materials: 1. Wooden blocks Inspect and correct each of the specified items: flues terminated to outside, 2" clearance to combustibles from flues, ventilation ducts terminated outdoors, non-airtight, non-IC rated recessed lighting replaced with airtight, IC-rated recessed units, broken mushroom vents replaced or removed, plumbing vents terminated outdoors, ceiling penetrations sealed, structural defects in roof, attic, and ceiling assemblies corrected, ponds on roof remedied, and all roof leaks repaired. GA Wx Field Guide Georgia Environmental Finance Authority 192 of 486 February 06, 2019 Insulation > Attics > Attic Ceilings 4.1003.8a - Attic, ceiling, and roof verification 1 Inspect roof for evidence of water pooling, leaks, or damage. Verify proper vent terminations 2 Inspect ceiling for weakness, leaks, clearance to combustibles, loose panels, and penetrations 3 Verify presence of rain caps on all vents 4 Inspect all patches and repairs, and correct deficiencies if necessary 5 6 Verify at least 2" clearance to Use temporary supports to avoid combustibles, unless flue is designed ceiling collapse during insulation install for zero clearance. Repair if needed 7 Add fasteners wherever needed to firmly attach ceiling to the trusses 8 Investigate all water stains and sources of moisture. Repair before insulating the attic 9 After opening the roof edge, verify proper clearance to combustibles and inspect vent connections GA Wx Field Guide Georgia Environmental Finance Authority 193 of 486 February 06, 2019 Insulation > Attics > Attic Ceilings 4.1003.8 - Installing Fiberglass Blown Insulation for Flat, Bowed, or Vaulted Ceilings (via Roof Side Lift) Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space 4.1003.8d - Fiberglass blown insulation installation Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): Insulation will be installed to a density of 1.5 to 1.6 pounds per cubic foot Using fill tube, 100% of each cavity will be filled to a consistent density Fill tube will be inserted within 6" of the end of each attic cavity Insulation will be installed into the void of the attic cavity: If existing insulation is roof-mounted, insulation will be blown below If existing insulation is ceiling-mounted, insulation will be blown above If existing insulation is mounted at both locations, insulation will be blown in between Avoid overfilling of roof edges and above attic trusses Flame spread and smoke-developed index for insulation will be a flame spread rating of 25 or less and a smoke development rating of 450 or less when tested in accordance with ASTM E84 Objective(s): Fill entire attic cavity to the prescribed R-value to reduce air infiltration Avoid clogging of the cavity and the fill tube Prevent damage to the ceiling Allow roof to be returned to original position Fire safety will be maintained GA Wx Field Guide Georgia Environmental Finance Authority 194 of 486 February 06, 2019 Insulation > Attics > Attic Ceilings 4.1003.8d - Fiberglass blown insulation installation In Progress After gaining access to the roof cavity, use supports to hold the roof material in place while blowing the insulation. GA Wx Field Guide Georgia Environmental Finance Authority 195 of 486 February 06, 2019 Insulation > Attics > Attic Ceilings 4.1003.9 - Installing Fiberglass Blown Insulation for Flat, Bowed, or Vaulted Ceilings (via Exterior Access from Top of Roof) Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space 4.1003.9a - Attic, ceiling, and roof verification Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): All combustion appliance flues will be terminated to the outdoors and terminations will maintain proper clearance above snow loads A distance no less than 2" will be maintained between any combustion appliance flue and combustible materials, unless zero clearance flue is in place All ventilation systems will maintain a continuous connection and terminate to the outdoors All broken mushroom vents will be replaced or removed and sealed All plumbing stacks will be terminated to the outdoors Non-IC rated light fixtures will be replaced with airtight IC-rated fixtures All recessed lights will be labeled as having an air leakage rate not more than 2.0 CFM when tested in accordance with ASTM E 283 at a 75 pascals pressure differential All obvious ceiling penetrations will be sealed The space between combustion appliance flues and the ceiling will be sealed with fire-rated materials All roof, attic, and ceiling assemblies will be structurally sound: Loose ceiling panels will be secured GA Wx Field Guide Georgia Environmental Finance Authority 196 of 486 February 06, 2019 Insulation > Attics > Attic Ceilings 4.1003.9a - Attic, ceiling, and roof verification Temporary ceiling bracing will be recommended during the insulation installation process Dishing and pooling issues that allow standing water will be addressed All known roof water leaks will be repaired before installing installation Objective(s): Ensure occupant and worker safety Verify attic space is ready to insulate Ensure structural integrity of the roof and ceiling assembly Prevent intrusion of bulk moisture Prevent damage while installing insulation Before Roof leak, missing cap on vent Tools: 1. 2-1/2" hole saw 2. Power drill 3. Borescope 4. Inspection mirror 5. Flashlight After Properly connected and sealed roof vent Materials: 1. Material requirements will vary based on conditions 2. Drywall or paneling 3. IC/Airtight recessed lights 4. Fire caulk 5. Vent terminations 6. Silicone caulk 7. Galvanized sheet metal and screws 8. Roof cement 9. Temporary ceiling bracing Inspect and correct each of the specified items: flues terminated to outside, 2" clearance to combustibles from flues, ventilation ducts terminated outdoors, non-airtight, non-IC rated recessed lighting replaced with airtight, IC-rated recessed units, broken mushroom vents replaced or removed, GA Wx Field Guide Georgia Environmental Finance Authority 197 of 486 February 06, 2019 Insulation > Attics > Attic Ceilings 4.1003.9a - Attic, ceiling, and roof verification plumbing vents terminated outdoors, ceiling penetrations sealed, structural defects in roof, attic, and ceiling assemblies corrected, ponds on roof remedied, and all roof leaks repaired. 1 Inspect roof for evidence of water pooling, leaks, or damage. Verify proper vent terminations 2 Inspect all patches and repairs, and correct deficiencies if necessary 3 Verify presence of rain caps on all vents 4 Inspect ceiling for weakness, leaks, clearance to combustibles, loose panels, and penetrations 5 6 Verify at least 2" clearance to combustibles, unless flue is designed for zero clearance. Repair if needed Repair and refasten sagging or unsecured ceiling panels. Caulk and seal seams to prevent insulation spilling into house 7 Use temporary supports to avoid ceiling collapse during insulation install GA Wx Field Guide Georgia Environmental Finance Authority 198 of 486 February 06, 2019 Insulation > Attics > Attic Ceilings 4.1003.9 - Installing Fiberglass Blown Insulation for Flat, Bowed, or Vaulted Ceilings (via Exterior Access from Top of Roof) Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space 4.1003.9b - Attic access Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): Access to the attic cavity will be created through the gable vents. Attic will be visually inspected for the location of existing insulation, wiring, flues, obstructions, hazards, and construction type Objective(s): Create access to the full attic cavity Maintain the integrity of the roof truss Determine technique for installing insulation In Progress Manufactured home attic access by slicing along ridgeline GA Wx Field Guide Georgia Environmental Finance Authority 199 of 486 February 06, 2019 Insulation > Attics > Attic Ceilings 4.1003.9b - Attic access Tools: 1. 7-1/4" circular saw 2. Electric driil 3. Carbide-tipped hole saw bits 4. Insulation blowing machine 5. 2" PVC pipe, 10 feet long 6. 4-1/2" or 7" angle grinder with flexible sanding wheels 7. Tape measure and chalk lines 8. Scaffolding Materials: 1. Abrasive or carbide-toothed cutting wheels If attic has both flat and vaulted ceilings, access may be gained through the gable ends for the flat ceilings. Determine and mark truss locations on Option 1: Drill a 4" hole in each truss Option 2: Cut a hole into each truss roof, and choose method of access. cavity two to three feet down from the cavity, big enough to inspect the Avoid drilling or sawing into trusses ridge opening and admit the fill tube Option 3: Cut the roof open along the highest point from end to end. Make crosswise cuts at each end if needed Pull cut edges of roof back to allow for Regardless of access method, visually inspection, repairs, and insulation inspect attic for existing insulation, installation wiring, flues, obstructions, and hazards GA Wx Field Guide Georgia Environmental Finance Authority 200 of 486 February 06, 2019 Insulation > Attics > Attic Ceilings 4.1003.9 - Installing Fiberglass Blown Insulation for Flat, Bowed, or Vaulted Ceilings (via Exterior Access from Top of Roof) Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space 4.1003.9d - Fiberglass blown insulation installation Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): Insulation will be installed to a density of 1.5 to 1.6 pounds per cubic foot Using fill tube, 100% of each cavity will be filled to a consistent density Fill tube will be inserted within 6" of the end of each attic cavity Insulation will be installed into the void of the attic cavity: If existing insulation is roof-mounted, insulation will be blown below If existing insulation is ceiling-mounted, insulation will be blown above If existing insulation is mounted at both locations, insulation will be blown in between Insulation will be filled no higher than the top of the truss Flame spread and smoke-developed index for insulation will be a flame spread rating of 25 or less and a smoke development rating of 450 or less when tested in accordance with ASTM E84 Objective(s): Fill entire attic cavity to the prescribed R-value to reduce air infiltration Avoid clogging of the cavity and the fill tube Prevent damage to the ceiling Allow roof to be returned to original position GA Wx Field Guide Georgia Environmental Finance Authority 201 of 486 February 06, 2019 Insulation > Attics > Attic Ceilings Fire safety will be maintained 4.1003.9d - Fiberglass blown insulation installation GA Wx Field Guide Georgia Environmental Finance Authority 202 of 486 February 06, 2019 Insulation > Attics > Attic Ceilings 4.1003.9 - Installing Fiberglass Blown Insulation for Flat, Bowed, or Vaulted Ceilings (via Exterior Access from Top of Roof) Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space 4.1003.9e - Patching and sealing openings Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): If the roof is sliced: A solid metal ridge cap will be centered over the slice A flexible and durable sealant will be sandwiched between the roof and the ridge cap Screws will be installed to prevent wrinkles and create a permanent seal Screws will not go into any wood framing A durable and flexible final coating will be applied over the screws and edge of the ridge cap to create a continuous seal between the roof and the perimeter of the ridge cap For holes that are drilled or cut, the initial patch will be applied using the following procedure: At least 6" of surface surrounding the opening will be cleaned before patch is installed Sealant will be continuous and applied in between the patch and the roof Sealant will be an all-weather adhesive that is flexible and durable If a metal patch is used: Patch will overlap the opening by 2" on all sides Gauge will be equal to or greater than the roof material Fasteners will be installed to prevent wrinkles and create a permanent seal If a plug is used, it will be flanged and have a tight fit Screws will not go into any wood framing A durable and flexible 45 mil adhesive patch will be applied in accordance to manufacturer GA Wx Field Guide Georgia Environmental Finance Authority 203 of 486 February 06, 2019 Insulation > Attics > Attic Ceilings 4.1003.9e - Patching and sealing openings specifications over the initial patch and will have at a minimum: Tear strength of 640g Elongation of 380% Application temperature no lower than 55F and no greater than 110F Services temperature no less than -25F and no greater than 150F Adhesive patch will overlap the initial patch by 2" on all sides A durable and flexible final coating will be applied over the adhesive patch to create a continuous seal between the roof and the perimeter of the patch All remaining seams, edges, and penetrations will be sealed as necessary Objective(s): Effectively patch and seal all openings Create a durable patch that will prevent roof leaks In Progress Rough cut hole that will need to be sealed. Tools: 1. Roller 2. Self adhering patch 3. sheet metal 4. 6" duct cap(to match 6" hole) 5. heat gun 6. drill In Progress Placing sealant around the exposed edges of the roof patch ensures a watertight seal. GA Wx Field Guide Georgia Environmental Finance Authority 204 of 486 February 06, 2019 Insulation > Attics > Attic Ceilings 4.1003.9e - Patching and sealing openings 1 Insert 6" plug and seal around the perimeter of the opening. 2 3 Firmly push the plug into place, until it Use a 10"x10" sheet metal patch to is flush with the roof surface. mark the center of the hole. 4 Apply sealant to the underside of the sheet metal patch. 5 Secure the metal patch to the roof being sure to place mechanical fasteners through the sealant. 6 Apply a 14"x14" self adhering roof patch on top of the sheet metal patch. 7 8 Use a heat gun to make the adhesive pliable to get the best possible seal. Forcefully roll the patch into place, starting from the center and working toward the edge. GA Wx Field Guide Georgia Environmental Finance Authority 205 of 486 February 06, 2019 Insulation > Attics > Attic Ceilings 4.1003.10 - Installing Fiberglass Blown Insulation for Flat, Bowed, or Vaulted Ceilings (via Interior Access Through the Ceiling) Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space 4.1003.10a - Attic, ceiling, and roof verification Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): All combustion appliance flues will be terminated to the exterior of the house and terminations will maintain proper clearance above snow loads A distance no less than 2" will be maintained between any combustion appliance flue and combustible materials, unless zero clearance flue is in place All ventilation systems will maintain a continuous connection and terminate to the outdoors All broken mushroom vents will be replaced or removed and sealed All plumbing stacks will be terminated to the outdoors Non-IC rated light fixtures will be replaced with airtight IC-rated fixtures, if feasible and only when installed measures will compromise the fire rating of the fixture All recessed lights will be labeled as having an air leakage rate no more than 2.0 CFM when tested in accordance with ASTM E 283 at a 75 pascals pressure differential All obvious ceiling penetrations will be sealed The space between combustion appliance flues and the ceiling will be sealed with fire-rated materials All roof, attic, and ceiling assemblies will be structurally sound: GA Wx Field Guide Georgia Environmental Finance Authority 206 of 486 February 06, 2019 Insulation > Attics > Attic Ceilings 4.1003.10a - Attic, ceiling, and roof verification Loose ceiling panels will be secured Temporary ceiling bracing will be recommended while installing installation Dishing and pooling issues that allow standing water will be addressed All known roof water leaks will be repaired before installing installation Objective(s): Ensure occupant and worker safety Verify attic space is ready to insulate Ensure structural integrity of the roof and ceiling assembly Prevent intrusion of bulk moisture Prevent damage while installing insulation GA Wx Field Guide Georgia Environmental Finance Authority 207 of 486 February 06, 2019 Insulation > Attics > Attic Ceilings 4.1003.10 - Installing Fiberglass Blown Insulation for Flat, Bowed, or Vaulted Ceilings (via Interior Access Through the Ceiling) Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space 4.1003.10b - Construction prep Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): Special precautions will be taken to limit fiberglass and construction dust exposure to the occupant and occupant belongings Objective(s): Protect occupant health and safety Protect occupant belongings GA Wx Field Guide Georgia Environmental Finance Authority 208 of 486 February 06, 2019 Insulation > Attics > Attic Ceilings 4.1003.10 - Installing Fiberglass Blown Insulation for Flat, Bowed, or Vaulted Ceilings (via Interior Access Through the Ceiling) Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space 4.1003.10c - Attic access Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): Equidistant holes will be drilled in a straight row parallel to the longitudinal exterior wall of the ceiling If a longitudinal ceiling trim piece exists, trim piece will be removed and holes will be drilled behind the trim Hole location and size will be placed to provide access to allow for consistent and uniform coverage of installed insulation throughout the attic assembly There will be, at a minimum, one hole between each roof truss Holes will be large enough to accommodate the chosen fill tube without damaging the ceiling material during installation If a vapor barrier or ceiling-mounted insulation is present, access will be gained through them Attic will be visually inspected for the location of existing insulation, obstructions, hazards, and construction type Objective(s): Create access to the full attic cavity Determine insulation installation technique Prevent damage to ceiling GA Wx Field Guide Georgia Environmental Finance Authority 209 of 486 February 06, 2019 Insulation > Attics > Attic Ceilings Create a professionally finished ceiling 4.1003.10c - Attic access GA Wx Field Guide Georgia Environmental Finance Authority 210 of 486 February 06, 2019 Insulation > Attics > Attic Ceilings 4.1003.10 - Installing Fiberglass Blown Insulation for Flat, Bowed, or Vaulted Ceilings (via Interior Access Through the Ceiling) Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space 4.1003.10d - Blowing machine set up Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): Blowing machine pressure test will be performed with air on full, feed off, and gate closed Hose outlet pressure will be set in accordance with manufacturer specifications Objective(s): Ensure machine is capable of delivering uniform insulation density and coverage GA Wx Field Guide Georgia Environmental Finance Authority 211 of 486 February 06, 2019 Insulation > Attics > Attic Ceilings 4.1003.10 - Installing Fiberglass Blown Insulation for Flat, Bowed, or Vaulted Ceilings (via Interior Access Through the Ceiling) Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space 4.1003.10e - Fiberglass blown insulation installation Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): Insulation will be installed to a density of 1.5 to 1.6 pounds per cubic foot Using fill tube, 100% of each cavity will be filled to a consistent density Fill tube will be inserted within 6" of the end of each attic cavity Insulation will be installed into the void of the attic cavity: If existing insulation is roof-mounted, insulation will be blown below If existing insulation is ceiling-mounted, insulation will be blown above If existing insulation is mounted at both locations, insulation will be blown in between Flame spread and smoke-developed index for insulation will be a flame spread rating of 25 or less and a smoke development rating of 450 or less when tested in accordance with ASTM E84 Objective(s): Fill entire attic cavity to the prescribed R-value to reduce air infiltration Avoid clogging of the cavity and the fill tube Prevent damage to the ceiling Fire safety will be maintained GA Wx Field Guide Georgia Environmental Finance Authority 212 of 486 February 06, 2019 Insulation > Attics > Attic Ceilings 4.1003.10 - Installing Fiberglass Blown Insulation for Flat, Bowed, or Vaulted Ceilings (via Interior Access Through the Ceiling) Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space 4.1003.10f - Patching and sealing holes Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): Holes will be plugged or covered and sealed to be aesthetically pleasing If existing trim was removed, it will be reinstalled Objective(s): Create an airtight seal Create a visually acceptable ceiling finish GA Wx Field Guide Georgia Environmental Finance Authority 213 of 486 February 06, 2019 Insulation > Attics > Attic Ceilings 4.1003.10 - Installing Fiberglass Blown Insulation for Flat, Bowed, or Vaulted Ceilings (via Interior Access Through the Ceiling) Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space 4.1003.10g - Verification of details Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): Installation process will be considered complete when installer has verified that damage has not occurred to the roof or ceiling assemblies during the installation process Objective(s): Verify the integrity of the house has been maintained GA Wx Field Guide Georgia Environmental Finance Authority 214 of 486 February 06, 2019 Insulation > Attics > Attic Ceilings 4.1003.10 - Installing Fiberglass Blown Insulation for Flat, Bowed, or Vaulted Ceilings (via Interior Access Through the Ceiling) Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space 4.1003.10h - Onsite Documentation Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): A dated receipt signed by the installer will be provided that includes: Insulation type Coverage area R-value Installed thickness and minimum settled thickness Number of bags installed in accordance with manufacturer specifications Objective(s): Document job completion to contract specifications Confirm amount of insulation installed Ensure ability to match bags required for total area completed Comply with 16 CFR 460.17 GA Wx Field Guide Georgia Environmental Finance Authority 215 of 486 February 06, 2019 Insulation > Attics > Attic Ceilings 4.1003.11 - Installing Fiberglass Blown Insulation in Roof-Over Constructions Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space 4.1003.11a - Roof-over overview Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): If occupant will allow access from interior, installation through the ceiling is preferred Attic space created by the roof-over will be accessed in accordance with the Single-Family Attic Access SWS If the roof-over does not allow physical access to the roof-over attic, access to the original attic will be gained through roof venting If existing insulation height in the attic is less than the height of the heel plate (original attic), access will be made through the original roof and the original attic cavities will be filled before blowing insulation over the original roof At a minimum, the access holes to the original attic cavities will be sealed to prevent air leakage If existing insulation height is equal to or greater than the height of the heel plate (original attic), the insulation will be installed in the end cavities before blowing on top of the original roof Access to the end cavities will be gained and insulation will be installed At a minimum, the access holes to the original attic cavities will be sealed to prevent air leakage Insulation will not be installed on top of the original roof until the end cavities are insulated and air sealed in original attic If insulation is installed on top of the original roof, it will be installed in accordance with the SingleFamily SWS Loose Fill Blown Fiberglass Insulation Installation GA Wx Field Guide Georgia Environmental Finance Authority 216 of 486 February 06, 2019 Insulation > Attics > Attic Ceilings Objective(s): Gain access to the combined attic spaces Address thermal bridging Correctly insulate the combined attic spaces 4.1003.11a - Roof-over overview GA Wx Field Guide Georgia Environmental Finance Authority 217 of 486 February 06, 2019 Insulation > Attics > Attic Ceilings 4.1003.11 - Installing Fiberglass Blown Insulation in Roof-Over Constructions Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space 4.1003.11b - Onsite documentation Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): A dated receipt signed by the installer will be provided that includes: Insulation type Coverage area R-value Installed thickness and minimum settled thickness Number of bags installed in accordance with manufacturer specifications Objective(s): Document job completion to contract specifications Confirm amount of insulation installed Ensure ability to match bags required for total area completed Comply with 16 CFR 460.17 GA Wx Field Guide Georgia Environmental Finance Authority 218 of 486 February 06, 2019 Insulation > Attics > Attic Ceilings 4.1003.15 - Installing Fiberglass Blown Insulation for Flat, Bowed, or Vaulted Ceilings (via Gable End Access) Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space 4.1003.15a - Attic, ceiling, and roof verification Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): All combustion appliance flues will be terminated to the outdoors and terminations will maintain proper clearance above snow loads A distance no less than 2" will be maintained between any combustion appliance flue and combustible materials, unless zero clearance flue is in place All ventilation systems will maintain a continuous connection and terminate to the outdoors All broken mushroom vents will be replaced or removed and sealed All plumbing stacks will be terminated to the outdoors Non- IC rated light fixtures will be replaced with airtight IC -rated fixtures All recessed lights will be labeled as having an air leakage rate not more than 2.0 CFM when tested in accordance with ASTM E 283 at a 75 pascals pressure differential All obvious ceiling penetrations will be sealed The space between combustion appliance flues and the ceiling will be sealed with fire-rated materials All roof, attic, and ceiling assemblies will be structurally sound: Loose ceiling panels will be secured Temporary ceiling bracing will be recommended during the insulation installation process GA Wx Field Guide Georgia Environmental Finance Authority 219 of 486 February 06, 2019 Insulation > Attics > Attic Ceilings 4.1003.15a - Attic, ceiling, and roof verification Dishing and pooling issues that allow standing water will be addressed All known roof water leaks will be repaired before installing installation Objective(s): Ensure occupant and worker safety Verify attic space is ready to insulate Ensure structural integrity of the roof and ceiling assembly Prevent intrusion of bulk moisture Prevent damage while installing insulation GA Wx Field Guide Georgia Environmental Finance Authority 220 of 486 February 06, 2019 Insulation > Attics > Attic Ceilings 4.1003.15 - Installing Fiberglass Blown Insulation for Flat, Bowed, or Vaulted Ceilings (via Gable End Access) Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space 4.1003.15b - Attic access Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): Access to the attic cavity will be created through the gable vents. Attic will be visually inspected for the location of existing insulation, wiring, flues, obstructions, hazards, and construction type Objective(s): Create access to the full attic cavity Maintain the integrity of the roof truss Determine technique for installing insulation GA Wx Field Guide Georgia Environmental Finance Authority 221 of 486 February 06, 2019 Insulation > Attics > Attic Ceilings 4.1003.15 - Installing Fiberglass Blown Insulation for Flat, Bowed, or Vaulted Ceilings (via Gable End Access) Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space 4.1003.15c - Blowing machine set up Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): Blowing machine pressure test will be performed with air on full, feed off, and gate closed Hose outlet pressure will be set in accordance with manufacturer specifications Objective(s): Ensure machine is capable of delivering uniform insulation density and coverage GA Wx Field Guide Georgia Environmental Finance Authority 222 of 486 February 06, 2019 Insulation > Attics > Attic Ceilings 4.1003.15 - Installing Fiberglass Blown Insulation for Flat, Bowed, or Vaulted Ceilings (via Gable End Access) Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space 4.1003.15d - Fiberglass blown insulation installation Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): Insulation will be installed to a density of 1.5 to 1.6 pounds per cubic foot Using fill tube, 100% of each roof cavity will be filled to a consistent density Insulation will be installed into the void of the attic cavity: If existing insulation is roof-mounted, insulation will be blown below If existing insulation is ceiling-mounted, insulation will be blown above If existing insulation is mounted at both locations, insulation will be blown in between Flame spread and smoke-developed index for insulation will be a flame spread rating of 25 or less and a smoke development rating of 450 or less when tested in accordance with ASTM E84 Objective(s): Fill entire attic cavity to the prescribed R-value to reduce air infiltration Avoid clogging of the cavity and the fill tube Prevent damage to the ceiling Fire safety will be maintained GA Wx Field Guide Georgia Environmental Finance Authority 223 of 486 February 06, 2019 Insulation > Attics > Attic Ceilings 4.1003.15 - Installing Fiberglass Blown Insulation for Flat, Bowed, or Vaulted Ceilings (via Gable End Access) Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space 4.1003.15e - Replace Gable End Vent Covers Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): Reinstall the gable end vents Objective(s): Prevent pest intrusion into attic Protect installed insulation GA Wx Field Guide Georgia Environmental Finance Authority 224 of 486 February 06, 2019 Insulation > Attics > Attic Ceilings 4.1003.15 - Installing Fiberglass Blown Insulation for Flat, Bowed, or Vaulted Ceilings (via Gable End Access) Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space 4.1003.15f - Verification of details Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): Installation process will be considered complete when installer has verified that damage has not occurred to the roof or ceiling assemblies during the installation process Objective(s): Verify the integrity of the house has been maintained GA Wx Field Guide Georgia Environmental Finance Authority 225 of 486 February 06, 2019 Insulation > Attics > Attic Ceilings 4.1003.15 - Installing Fiberglass Blown Insulation for Flat, Bowed, or Vaulted Ceilings (via Gable End Access) Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space 4.1003.15g - Onsite documentation Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): A dated receipt signed by the installer will be provided that includes: Insulation type Coverage area R-value Installed thickness and minimum settled thickness Number of bags installed in accordance with manufacturer specifications Objective(s): Document job completion to contract specifications Confirm amount of insulation installed Ensure ability to match bags required for total area complete Comply with 16 CFR 460.17 GA Wx Field Guide Georgia Environmental Finance Authority 226 of 486 February 06, 2019 Insulation > Attics > Special Considerations 4.1088.6 - Installing Insulation at Flat and Cathedral Ceiling Transition Wall Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space 4.1088.6a - Insulation installation verification Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): A visual inspection of the highest point of the transition wall will be completed Access points will be determined from the gable end, roof, ceiling, or interior paneling Objective(s): Verify the height and the accessibility of the attic GA Wx Field Guide Georgia Environmental Finance Authority 227 of 486 February 06, 2019 Insulation > Attics > Special Considerations 4.1088.6 - Installing Insulation at Flat and Cathedral Ceiling Transition Wall Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space 4.1088.6b - Access attic Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): Attic will be accessed through the location that allows the most efficient and effective insulation coverage Objective(s): Gain access to the flat and cathedral ceiling transition wall GA Wx Field Guide Georgia Environmental Finance Authority 228 of 486 February 06, 2019 Insulation > Attics > Special Considerations 4.1088.6 - Installing Insulation at Flat and Cathedral Ceiling Transition Wall Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space 4.1088.6c - Blowing Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): Blowing machine pressure test will be performed with air on full, feed off, and gate closed Insulation will be blown against the transition wall until the wall is covered Objective(s): Ensure machine is capable of delivering uniform insulation density and coverage to meet manufacturer specifications for loose blown insulation Create a thermal barrier at the transition wall GA Wx Field Guide Georgia Environmental Finance Authority 229 of 486 February 06, 2019 Insulation > Attics > Special Considerations 4.1088.6 - Installing Insulation at Flat and Cathedral Ceiling Transition Wall Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space 4.1088.6d - Spray two-part foam Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): Insulation will be installed to prescribed R-value in accordance with manufacturer specifications Spray polyurethane foam (SPF) will be applied to desired thickness, using pass thickness maximum as indicated by manufacturer Objective(s): Insulate and seal transition wall GA Wx Field Guide Georgia Environmental Finance Authority 230 of 486 February 06, 2019 Insulation > Attics > Special Considerations 4.1088.6 - Installing Insulation at Flat and Cathedral Ceiling Transition Wall Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space 4.1088.6e - Batt Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): Batt insulation will be installed in accordance with manufacturer specifications without gaps, voids, compressions, misalignments, or wind intrusions Insulation will be installed to the prescribed R-value Vapor barrier will be installed based on regional considerations Objective(s): Insulate to prescribed R-value GA Wx Field Guide Georgia Environmental Finance Authority 231 of 486 February 06, 2019 Insulation > Attics > Special Considerations 4.1088.6 - Installing Insulation at Flat and Cathedral Ceiling Transition Wall Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space 4.1088.6f - Patching and sealing access points Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): Created access points will be covered and sealed in an aesthetically pleasing manner Existing access points (e.g., gable vent) will be returned to the original condition If existing trim was removed, it will be reinstalled Objective(s): Create an airtight seal Create an aesthetically pleasing finish GA Wx Field Guide Georgia Environmental Finance Authority 232 of 486 February 06, 2019 Insulation > Attics > Special Considerations 4.1088.6 - Installing Insulation at Flat and Cathedral Ceiling Transition Wall Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space 4.1088.6g - Verification of details Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): Installation process will be considered complete when installer has verified that damage has not occurred to the roof or ceiling assemblies during the installation process Objective(s): Verify the integrity of the house has been maintained GA Wx Field Guide Georgia Environmental Finance Authority 233 of 486 February 06, 2019 Insulation > Attics > Special Considerations 4.1088.6 - Installing Insulation at Flat and Cathedral Ceiling Transition Wall Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space 4.1088.6h - Onsite Documentation Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): A dated receipt signed by the installer will be provided that includes: Insulation type Coverage area R-value Installed thickness and settled thickness (settled thickness required for loose-fill only) Number of bags installed in accordance with manufacturer specifications (for loose-fill only) Objective(s): Document job completion to contract specifications Confirm amount of insulation installed Comply with 16 CFR 460.17 GA Wx Field Guide Georgia Environmental Finance Authority 234 of 486 February 06, 2019 Insulation > Walls > Preparation 4.1101.5 - Exterior Wall Dense Packing Desired Outcome: Walls properly prepared to receive dense pack insulation Note: 4.1101.5a - Preparation Desired Outcome: Walls properly prepared to receive dense pack insulation Specification(s): Lead safety procedures will be followed Cavities will be free of hazards, intact, and able to support dense pack pressures Drilling hazards (e.g., wiring, venting, fuel piping) will be located Blocking will be installed around: All openings to inside of the crawl space and basement for fibrous material High temperature fire-rated materials Wiring and electrical hazards Heat sources Access to exterior wall cavities will be gained, sheathing will be drilled as needed and probed to locate each cavity, wall studs, and blockers When accessing wall cavities, the interior will be masked to control dust during drilling Electricity supply will be confirmed and will support blowing machine power demand Blowing machine pressure test will be performed with air on highest level, feed off, and gate closed Hose outlet pressure will be at least 80 IWC or 2.9 psi for cellulose insulation; for other types of dense pack insulation, check manufacturer specification for blowing machine set up Objective(s): Prevent damage to the house Provide a clean work space GA Wx Field Guide Georgia Environmental Finance Authority 235 of 486 February 06, 2019 Insulation > Walls > Preparation Provide thorough access to allow 100% coverage Ensure proper equipment and process results in consistent density Prevent settling and retard air flow through cavities Protect worker and occupant health 4.1101.5a - Preparation GA Wx Field Guide Georgia Environmental Finance Authority 236 of 486 February 06, 2019 Insulation > Walls > Preparation 4.1101.5 - Exterior Wall Dense Packing Desired Outcome: Walls properly prepared to receive dense pack insulation Note: 4.1101.5b - Exterior dense pack Desired Outcome: Walls properly prepared to receive dense pack insulation Specification(s): Using fill tube, 100% of each cavity will be filled to a consistent density: Blown fiberglass, mineral fiber, rock and slag wool, or spray foam used in an enclosed cavity will be installed at or above the manufacturer recommended density to limit air flow that corresponds to an air permeance value of 3.5 cubic feet per minute per square foot at 50 pascals Cellulose material will be installed to a minimum density of 3.5 pounds per cubic foot when the wall sheathing and interior cladding will endure this level of pressure Loose fiberglass material will be installed and will be specifically approved for air flow resistance to a minimum density in accordance with manufacturer specifications The number of bags installed will be confirmed and will match the number to achieve 1.5-1.6 pounds per cubic foot Insulation will be verified to prevent visible air movement using chemical smoke at 50 pascals of pressure difference Objective(s): Eliminate voids and settling Minimize framing cavity air flows GA Wx Field Guide Georgia Environmental Finance Authority 237 of 486 February 06, 2019 Insulation > Walls > Manufactured Housing Wall Insulation 4.1104.1 - Stuffing Wall Cavities with Fiberglass Batts Desired Outcome: Consistent thermal boundary and air barrier between the conditioned space and unconditioned space 4.1104.1a - Access wall cavities Desired Outcome: Consistent thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): If skirting overlaps siding, skirting will be detached to allow access to the wall cavity Fasteners will be removed from the bottom of the siding, working upward until the siding can be pulled away from the framing approximately 6" without damaging the siding Temporary fasteners will be installed near the bottom of the siding panels at the seams to prevent separation If a subsheathing is present under the siding, access through the subsheathing will be required Objective(s): Gain access to the wall cavity without damaging or separating the siding GA Wx Field Guide Georgia Environmental Finance Authority 238 of 486 February 06, 2019 Insulation > Walls > Manufactured Housing Wall Insulation 4.1104.1 - Stuffing Wall Cavities with Fiberglass Batts Desired Outcome: Consistent thermal boundary and air barrier between the conditioned space and unconditioned space 4.1104.1b - Exterior wall cavity inspection Desired Outcome: Consistent thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): Wall cavities will be inspected for moisture damage, pest locations, and integrity of the wiring, and holes to the interior Siding will be repaired as necessary Location of belt rails, obstructions, and existing insulation will be identified All interior surfaces of exterior walls will be inspected for loose paneling joints, occupant wall hangings, location of switches and outlets, and other wall obstructions Objects will be removed from the interior surfaces of the walls being insulated Interior paneling will be repaired as necessary Objective(s): Prepare wall cavity for insulation Prevent water leaks from occurring GA Wx Field Guide Georgia Environmental Finance Authority 239 of 486 February 06, 2019 Insulation > Walls > Manufactured Housing Wall Insulation 4.1104.1 - Stuffing Wall Cavities with Fiberglass Batts Desired Outcome: Consistent thermal boundary and air barrier between the conditioned space and unconditioned space 4.1104.1c - Fiberglass batt installation tool (stuffer) Desired Outcome: Consistent thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): A sheet of polycarbonate, such as Lexan, will be cut to the following specifications to create a stuffer tool: Approximately 1' x 8' x " with a 5 degree bend 7' " from the bottom All corners of the Lexan (polycarbonate) will be rounded and all edges will be sanded Other clear sheet plastics will not be used due to a tendency to shatter under stress Objective(s): Create a tool to install a fiberglass batt into the cavity Ensure worker safety GA Wx Field Guide Georgia Environmental Finance Authority 240 of 486 February 06, 2019 Insulation > Walls > Manufactured Housing Wall Insulation 4.1104.1 - Stuffing Wall Cavities with Fiberglass Batts Desired Outcome: Consistent thermal boundary and air barrier between the conditioned space and unconditioned space 4.1104.1d - Fiberglass batt installation Desired Outcome: Consistent thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): Thickness of the batt will fill the void without deforming siding or damaging structure Fiberglass batts will fill the cavity (e.g., batt may be cut approximately 1" longer to ensure proper fill and allow for lap at the top) Flexible membrane will have an appropriate perm rating for the region Flexible membrane will be cut 2" wider than the cavity and approximately 1' longer than the batt Stuffer tool, membrane, and fiberglass batt will be aligned for installation Stuffer tool will be used to install the fiberglass batt and membrane at the same time Excess fiberglass batt and membrane vapor retarder extending below the cavity will be rolled and tucked into the cavity A poly-encased fiberglass batt may be used in place of the fiberglass batt and membrane assembly The membrane will be installed in contact with the side of the wall that is compatible with the local climate zone Objective(s): Maintain integrity of the batt Aid in the installation process GA Wx Field Guide Georgia Environmental Finance Authority 241 of 486 February 06, 2019 Insulation > Walls > Manufactured Housing Wall Insulation 4.1104.1 - Stuffing Wall Cavities with Fiberglass Batts Desired Outcome: Consistent thermal boundary and air barrier between the conditioned space and unconditioned space 4.1104.1e - Sub-sheathing patch and repair Desired Outcome: Consistent thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): Subsheathing will be patched or repaired as necessary Objective(s): Ensure the integrity of the drainage plane GA Wx Field Guide Georgia Environmental Finance Authority 242 of 486 February 06, 2019 Insulation > Walls > Manufactured Housing Wall Insulation 4.1104.1 - Stuffing Wall Cavities with Fiberglass Batts Desired Outcome: Consistent thermal boundary and air barrier between the conditioned space and unconditioned space 4.1104.1f - Reattachment Desired Outcome: Consistent thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): If skirting was removed, skirting will be reinstalled to shed water to the outside of the skirting Siding will be reattached with new fasteners Siding will be reattached without bulges or wrinkles Objective(s): Ensure the integrity of the drainage plane Return siding to existing conditions without damage GA Wx Field Guide Georgia Environmental Finance Authority 243 of 486 February 06, 2019 Insulation > Walls > Manufactured Housing Wall Insulation 4.1104.1 - Stuffing Wall Cavities with Fiberglass Batts Desired Outcome: Consistent thermal boundary and air barrier between the conditioned space and unconditioned space 4.1104.1g - Onsite documentation Desired Outcome: Consistent thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): A dated receipt signed by the installer will be provided that includes: Coverage area Thickness R-value Objective(s): Document job completion to contract specifications Confirm amount of insulation installed Comply with 16 CFR 460.17 GA Wx Field Guide Georgia Environmental Finance Authority 244 of 486 February 06, 2019 Insulation > Walls > Manufactured Housing Wall Insulation 4.1104.2 - Fiberglass Blown Insulation Installation (Lifting Siding) Desired Outcome: Consistent thermal boundary and air barrier between the conditioned space and unconditioned space 4.1104.2a - Access wall cavities Desired Outcome: Consistent thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): If skirting overlaps siding, skirting will be removed Fasteners will be removed from the bottom of the siding, working upward until the siding can be pulled away from the framing approximately 6" without damaging the siding Temporary fasteners will be installed near the bottom of the siding panels at the seams If a subsheathing is present under the siding, access through the subsheathing will be required Objective(s): Gain access to the wall cavity without causing damage or separation of the siding GA Wx Field Guide Georgia Environmental Finance Authority 245 of 486 February 06, 2019 Insulation > Walls > Manufactured Housing Wall Insulation 4.1104.2 - Fiberglass Blown Insulation Installation (Lifting Siding) Desired Outcome: Consistent thermal boundary and air barrier between the conditioned space and unconditioned space 4.1104.2b - Exterior wall cavity inspection Desired Outcome: Consistent thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): Installer prework assessment will be conducted to determine: Moisture damage Presence of infestation or pests Location and integrity of wiring Holes to the interior and exterior Loose paneling or siding Location of belt rails Location of wall obstructions (switches, outlets) Existing insulation Wall hangings for removal during work Problems will be corrected before work begins Objective(s): Prepare wall cavity for insulation Prevent water leaks GA Wx Field Guide Georgia Environmental Finance Authority 246 of 486 February 06, 2019 Insulation > Walls > Manufactured Housing Wall Insulation 4.1104.2 - Fiberglass Blown Insulation Installation (Lifting Siding) Desired Outcome: Consistent thermal boundary and air barrier between the conditioned space and unconditioned space 4.1104.2c - Blowing machine set up Desired Outcome: Consistent thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): Blowing machine pressure test will be performed with air on full, feed off, and gate closed Hose outlet pressure will be set according to manufacturer specifications Objective(s): Achieve uniform insulation density and coverage GA Wx Field Guide Georgia Environmental Finance Authority 247 of 486 February 06, 2019 Insulation > Walls > Manufactured Housing Wall Insulation 4.1104.2 - Fiberglass Blown Insulation Installation (Lifting Siding) Desired Outcome: Consistent thermal boundary and air barrier between the conditioned space and unconditioned space 4.1104.2d - Fiberglass blown insulation installation Desired Outcome: Consistent thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): Insulation will meet a flame spread rating of 25 or less and a smoke development rating of 450 or less when tested in accordance with ASTM E84 Insulation will be installed to a density of 1.5 to-1.6 pounds per cubic foot Using fill tube, 100% of each cavity will be filled to a consistent density Special precaution will be taken not to overfill the bottom of the cavity Fill tube will be inserted from the bottom of the wall cavity within 6" of the top of the cavity between the interior paneling and any existing insulation Objective(s): Fire safety maintained Fill entire wall cavity to the prescribed R-value to reduce air infiltration Ensure bottom portion of siding will reattach properly Avoid clogging of the cavity and the fill tube GA Wx Field Guide Georgia Environmental Finance Authority 248 of 486 February 06, 2019 Insulation > Walls > Manufactured Housing Wall Insulation 4.1104.2 - Fiberglass Blown Insulation Installation (Lifting Siding) Desired Outcome: Consistent thermal boundary and air barrier between the conditioned space and unconditioned space 4.1104.2e - Subsheathing patch and repair Desired Outcome: Consistent thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): Subsheathing will be patched or repaired as necessary Objective(s): Ensure the integrity of the drainage plane GA Wx Field Guide Georgia Environmental Finance Authority 249 of 486 February 06, 2019 Insulation > Walls > Manufactured Housing Wall Insulation 4.1104.2 - Fiberglass Blown Insulation Installation (Lifting Siding) Desired Outcome: Consistent thermal boundary and air barrier between the conditioned space and unconditioned space 4.1104.2f - Reattachment Desired Outcome: Consistent thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): If skirting was removed, skirting will be reinstalled to shed water to the outside of the skirting Siding will be reattached with new fasteners Siding will be reattached without bulges or wrinkles Objective(s): Ensure the integrity of the drainage plane Reattach siding without damage GA Wx Field Guide Georgia Environmental Finance Authority 250 of 486 February 06, 2019 Insulation > Walls > Manufactured Housing Wall Insulation 4.1104.2 - Fiberglass Blown Insulation Installation (Lifting Siding) Desired Outcome: Consistent thermal boundary and air barrier between the conditioned space and unconditioned space 4.1104.2g - Onsite documentation Desired Outcome: Consistent thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): A dated receipt signed by the installer will be provided that includes: Coverage area Thickness R-value Objective(s): Document job completion to contract specifications Confirm amount of insulation installed Comply with 16 CFR 460.17 GA Wx Field Guide Georgia Environmental Finance Authority 251 of 486 February 06, 2019 Insulation > Walls > Manufactured Housing Wall Insulation 4.1104.3 - Fiberglass Blown Insulation Installation (via Penetrations Through or Behind the Siding) Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space 4.1104.3a - Access wall cavities Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): With T-111, OSB, or plywood type siding: Access to exterior wall cavities will be gained and sheathing will be drilled as needed and probed to locate each cavity, wall studs, and blockers Drilled holes will be large enough to accommodate an appropriately sized fill tube Holes will be drilled around the perimeter of the home, parallel to the bottom plate and an equal distance apart The line of holes will be located under the lowest window sill when possible With lap siding: Course of siding will be unhooked or removed Holes sufficiently large for the fill tube will be drilled in every wall cavity Objective(s): Gain access to the wall cavity Ensure holes are easily covered with an aesthetically pleasing trim strip GA Wx Field Guide Georgia Environmental Finance Authority 252 of 486 February 06, 2019 Insulation > Walls > Manufactured Housing Wall Insulation 4.1104.3 - Fiberglass Blown Insulation Installation (via Penetrations Through or Behind the Siding) Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space 4.1104.3b - Exterior wall cavity inspection Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): Installer prework assessment will be conducted to determine: Moisture damage Presence of infestation or pests Location and integrity of wiring Holes to the interior and exterior Loose paneling or siding Location of belt rails Location of wall obstructions (switches, outlets) Existing insulation Wall hangings for removal during work Problems will be corrected before work begins Objective(s): Prepare wall cavity for insulation Prevent water leaks GA Wx Field Guide Georgia Environmental Finance Authority 253 of 486 February 06, 2019 Insulation > Walls > Manufactured Housing Wall Insulation 4.1104.3 - Fiberglass Blown Insulation Installation (via Penetrations Through or Behind the Siding) Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space 4.1104.3c - Blowing machine set up Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): Blowing machine pressure test will be performed with air on full, feed off, and gate closed Hose outlet pressure will be set in accordance with manufacturer specifications Objective(s): Ensure machine is capable of delivering uniform insulation density and coverage GA Wx Field Guide Georgia Environmental Finance Authority 254 of 486 February 06, 2019 Insulation > Walls > Manufactured Housing Wall Insulation 4.1104.3 - Fiberglass Blown Insulation Installation (via Penetrations Through or Behind the Siding) Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space 4.1104.3d - Fiberglass blown insulation installation Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): Flame spread and smoke-developed index for insulation will meet a flame spread rating of 25 or less and a smoke development rating of 450 or less when tested in accordance with ASTM E84 Insulation will be installed to a density of 1.5 to 1.6 pounds per cubic foot Using fill tube, 100% of each cavity will be filled to a consistent density Fill tube will be inserted within 6" of the top of the cavity between the interior paneling and any existing insulation Objective(s): Fill entire wall cavity to the prescribed R-value to reduce air infiltration Avoid clogging of the cavity and the fill tube Fire safety will be maintained GA Wx Field Guide Georgia Environmental Finance Authority 255 of 486 February 06, 2019 Insulation > Walls > Manufactured Housing Wall Insulation 4.1104.3 - Fiberglass Blown Insulation Installation (via Penetrations Through or Behind the Siding) Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space 4.1104.3e - Plug and seal holes Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): Holes will be plugged and sealed Objective(s): Ensure the integrity of the drainage plane GA Wx Field Guide Georgia Environmental Finance Authority 256 of 486 February 06, 2019 Insulation > Walls > Manufactured Housing Wall Insulation 4.1104.3 - Fiberglass Blown Insulation Installation (via Penetrations Through or Behind the Siding) Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space 4.1104.3f - Final wall assembly Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): For T-111 and equivalent siding: A preprimed trim will be centered and installed over the holes Height of the trim will span from 1" above to 1" below the hole A continuous caulk seal will be applied between the trim and siding Caulk seal will be above the holes Top edge of the trim will be sealed to the siding with a continuous caulk seal For lap siding: Siding will be reattached without bulges or wrinkles Siding will be hooked into the original position Objective(s): Ensure the integrity of the drainage plane Return siding to existing conditions without damage GA Wx Field Guide Georgia Environmental Finance Authority 257 of 486 February 06, 2019 Insulation > Walls > Manufactured Housing Wall Insulation 4.1104.3 - Fiberglass Blown Insulation Installation (via Penetrations Through or Behind the Siding) Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space 4.1104.3g - Onsite documentation Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): A dated receipt signed by the installer will be provided that includes: Coverage area Thickness R-value Objective(s): Document job completion to contract specifications Confirm amount of insulation installed Comply with 16 CFR 460.17 GA Wx Field Guide Georgia Environmental Finance Authority 258 of 486 February 06, 2019 Insulation > Walls > Manufactured Housing Wall Insulation 4.1104.4 - Spray Foam Insulation Installation in Cavities above Doors and Windows Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space 4.1104.4a - Access wall cavities above doors and windows Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): All interior surfaces of the cavities planned to be insulated will be inspected for loose paneling joints, occupant wall hangings, and other wall obstructions Objects will be removed from the interior surfaces of the exterior walls as needed Interior paneling will be repaired and secured as necessary Holes will be drilled from the interior of the house A hole no larger than the spray nozzle will be drilled in each cavity above the door or window When possible, the hole will be drilled in the panel groove Objective(s): Prepare wall cavity for insulation Prevent damage from overspray to occupant possessions GA Wx Field Guide Georgia Environmental Finance Authority 259 of 486 February 06, 2019 Insulation > Walls > Manufactured Housing Wall Insulation 4.1104.4 - Spray Foam Insulation Installation in Cavities above Doors and Windows Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space 4.1104.4b - Cavity inspection Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): Cavity will be probed to assess conditions and volume of cavity Objective(s): Determine the approximate amount of foam to be installed in the cavity GA Wx Field Guide Georgia Environmental Finance Authority 260 of 486 February 06, 2019 Insulation > Walls > Manufactured Housing Wall Insulation 4.1104.4 - Spray Foam Insulation Installation in Cavities above Doors and Windows Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space 4.1104.4c - Insulation installation Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): Flame spread index of foam insulation will not exceed 75 and a smoke- developed index of no more than 450 when tested in the maximum thickness intended for use in accordance with ASTM E84 or UL 723 Foam insulation will be separated from the interior of the building by an approved thermal barrier at a minimum of 1/2" gypsum wallboard or a material that is tested in accordance with the acceptance criteria of both the Temperature Transmission Fire Test and the Integrity Fire Test of NFPA 275 Two-part foam selection will be based on regional considerations 100% of each cavity will be filled to a consistent density without bulging of panels or siding Objective(s): Fill entire wall cavity to the prescribed R-value to reduce air infiltration Fire safety will be maintained GA Wx Field Guide Georgia Environmental Finance Authority 261 of 486 February 06, 2019 Insulation > Walls > Manufactured Housing Wall Insulation 4.1104.4 - Spray Foam Insulation Installation in Cavities above Doors and Windows Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space 4.1104.4d - Final wall assembly Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): A color-corresponding sealant will be applied to the access hole Objective(s): Ensure wall is aesthetically pleasing GA Wx Field Guide Georgia Environmental Finance Authority 262 of 486 February 06, 2019 Insulation > Walls > Manufactured Housing Wall Insulation 4.1104.4 - Spray Foam Insulation Installation in Cavities above Doors and Windows Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space 4.1104.4e - Onsite documentation Desired Outcome: Consistent, uniform thermal boundary and air barrier between the conditioned space and unconditioned space Specification(s): A dated receipt signed by the installer will be provided that includes: Coverage area Thickness R-value Objective(s): Document job completion to contract specifications Confirm amount of insulation installed Comply with 16 CFR 460.17 GA Wx Field Guide Georgia Environmental Finance Authority 263 of 486 February 06, 2019 Insulation > Floors > Manufactured Housing Belly Preparation 4.1302.1 - Prepare Belly Floor Cavity for Insulation Desired Outcome: Belly floor cavity ready for insulation Note: 4.1302.1a - Work assessment Desired Outcome: Belly floor cavity ready for insulation Specification(s): Gas, water, waste, and electrical lines will be checked for: Plumbing leaks Gas/oil leaks Attachment Standing water Raw sewage Pests Objective(s): Ensure that floor space is safe and ready for work Verify scope of work GA Wx Field Guide Georgia Environmental Finance Authority 264 of 486 February 06, 2019 Insulation > Floors > Manufactured Housing Belly Preparation 4.1302.1 - Prepare Belly Floor Cavity for Insulation Desired Outcome: Belly floor cavity ready for insulation Note: 4.1302.1b - Preparation Desired Outcome: Belly floor cavity ready for insulation Specification(s): Where bottom board/rodent barrier is missing or damaged and accessible, the following will be ensured: Duct sealing completed Gas, water, and electrical lines secured at least every 4' to a floor joist or framing member Water line will be located on the warm side of the insulation; if not, the water lines will be insulated appropriately No water or gas leaks are present Waste lines are sloped to " per foot Bottom board/rodent barrier is sound/strong enough to support insulation When bottom board is intact, the following will be ensured: Holes and penetrations in the bottom board and decking sealed Duct sealing completed No water or gas leaks present Bottom board is sound/strong enough to support insulation Water lines are secured to the floor joists/warm side of the insulation; if not, the water lines will be insulated appropriately Problems will be corrected before floor cavity insulation work begins Objective(s): Ensure problems are corrected before floor cavity insulation work begins Keep pipes from freezing GA Wx Field Guide Georgia Environmental Finance Authority 265 of 486 February 06, 2019 Insulation > Floors > Manufactured Housing Floor Cavity Insulation 4.1303.1 - Insulation of Floor Cavity with Blown Material Desired Outcome: Consistent thermal boundary between conditioned and unconditioned space that reduces heat flow 4.1303.1e - Occupant education Desired Outcome: Consistent thermal boundary between conditioned and unconditioned space that reduces heat flow Specification(s): A dated receipt signed by the installer will be provided that includes: Insulation type Coverage area R-value Installed thickness and minimum settled thickness Number of bags installed in accordance with manufacturer specifications Objective(s): Document job completion to contract specifications Confirm amount of insulation installed Ensure ability to match bags required for total area completed Comply with 16 CFR 460.17 GA Wx Field Guide Georgia Environmental Finance Authority 266 of 486 February 06, 2019 Insulation > Floors > Manufactured Housing Floor Cavity Insulation 4.1303.1e - Occupant education Best Practice Provide occupant with signed, dated receipt documenting information about insulation installed Documentation shall include: insulation type, coverage area, Rvalue, installed thickness, and number of bags installed Provide occupant with copies of all documentation Communicate professionally with occupant to provide information and support GA Wx Field Guide Georgia Environmental Finance Authority 267 of 486 February 06, 2019 Insulation > Floors > Manufactured Housing Floor Cavity Insulation 4.1303.2 - Insulation of Floor Cavity with Batt Material Desired Outcome: Consistent thermal boundary between conditioned and unconditioned space that reduces heat flow 4.1303.2e - Occupant education Desired Outcome: Consistent thermal boundary between conditioned and unconditioned space that reduces heat flow Specification(s): A dated receipt signed by the installer will be provided that includes: Coverage area Thickness R-value Objective(s): Document job completion to contract specifications Confirm amount of insulation installed Comply with 16 CFR 460.17 Best Practice Provide occupant with signed, dated receipt documenting information about insulation installed GA Wx Field Guide Georgia Environmental Finance Authority 268 of 486 February 06, 2019 Insulation > Floors > Manufactured Housing Floor Cavity Insulation 4.1303.2e - Occupant education Documentation shall include: coverage Provide occupant with copies of all area, thickness of insulation installed, documentation and R-value Communicate professionally with occupant to provide information and support GA Wx Field Guide Georgia Environmental Finance Authority 269 of 486 February 06, 2019 Insulation > Basements and Crawl Spaces > Basements and Crawl Space Walls 4.1402.2 - Basement Wall Insulation--No Groundwater Leakage Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential 4.1402.2a - R-value Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential Specification(s): Regional IECC will be followed for required R-values Objective(s): Improve thermal performance of the basement and living space GA Wx Field Guide Georgia Environmental Finance Authority 270 of 486 February 06, 2019 Insulation > Basements and Crawl Spaces > Basements and Crawl Space Walls 4.1402.2 - Basement Wall Insulation--No Groundwater Leakage Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential 4.1402.2a - R-value Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential Specification(s): Regional IECC will be followed for required R-values Objective(s): Improve thermal performance of the basement and living space Best Practice Find your regional zone and insulation application to determine r-value GA Wx Field Guide Georgia Environmental Finance Authority 271 of 486 February 06, 2019 Insulation > Basements and Crawl Spaces > Basements and Crawl Space Walls 4.1402.2 - Basement Wall Insulation--No Groundwater Leakage Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential 4.1402.2b - Air barrier Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential Specification(s): A continuous air barrier will be installed on the warm side of the insulation Objective(s): Prevent condensation on the basement wall GA Wx Field Guide Georgia Environmental Finance Authority 272 of 486 February 06, 2019 Insulation > Basements and Crawl Spaces > Basements and Crawl Space Walls 4.1402.2 - Basement Wall Insulation--No Groundwater Leakage Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential 4.1402.2b - Air barrier Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential Specification(s): A continuous air barrier will be installed on the warm side of the insulation Objective(s): Prevent condensation on the basement wall Before Basement shows no sign of ground water penetration, but needs insulation Tools: 1. Utility knife 2. Tape measure 3. Drill 4. Taping knife After Insulation and drywall create an air barrier Materials: 1. XPS insulation board 2. Kraft-faced fiberglass batts 3. Drywall 4. Spackle 5. Seam tape 6. Fasteners GA Wx Field Guide Georgia Environmental Finance Authority 273 of 486 February 06, 2019 Insulation > Basements and Crawl Spaces > Basements and Crawl Space Walls 4.1402.2b - Air barrier XPS insulation board is a nonabsorbent insulation option The drywall still provides an air barrier OR Kraft-faced fiberglass batts can be to keep moisture build up on wall used with paper toward living space Both kraft-face and drywall create air barrier, but batts are absorbent GA Wx Field Guide Georgia Environmental Finance Authority 274 of 486 February 06, 2019 Insulation > Basements and Crawl Spaces > Basements and Crawl Space Walls 4.1402.2 - Basement Wall Insulation--No Groundwater Leakage Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential 4.1402.2c - Vapor permeability Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential Specification(s): When absorbent insulation materials are installed, assembly will remain vapor semi-impermeable to the interior in all climate zones except Zone 7 Objective(s): Provide drying potential to the basement Before Kraft-faced fiberglass insulation is absorbent After Drywall typically has a perm rating of 50-good for zones 1-6 Tools: 1. Utility knife 2. Tape measure 3. Drill 4. Taping knife Materials: 1. XPS insulation board 2. Drywall 3. Kraft-faced fiberglass batts 4. Spackle 5. Seam tape 6. Fasteners GA Wx Field Guide Georgia Environmental Finance Authority 275 of 486 February 06, 2019 Insulation > Basements and Crawl Spaces > Basements and Crawl Space Walls 4.1402.2c - Vapor permeability The higher a material's perm rating, the more vapor can pass through said material. Drywall typically has a perm rating of approximately 50. In zones 7 & 8 (AK, parts of MN, ND,WI, MI, WY, CO, and ME), vapor retarders should be used to minimize freezing. For vapor retarders in basements and crawl spaces, SWS calls for materials with a perm rating of <0.5 (which translates to 4mil or thicker). From 2007 IRC definition of vapor retarders: Class I: 0.1 perm (called impermeable), Class II: 0.1 to 1.0 perm (called semi-impermeable), Class III: 1.0 perm to 10 perms (called semi-permeable). Determine in which zone you are working before selecting work materials In zones 7&8, vapor permeability is undesirable. Use a vapor retarder Many lightweight wallboard brands have higher perm ratings for humid zones GA Wx Field Guide Georgia Environmental Finance Authority 276 of 486 February 06, 2019 Insulation > Basements and Crawl Spaces > Basements and Crawl Space Walls 4.1402.3 - Basement Wall Insulation--Groundwater Leakage Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential 4.1402.3a - Drainage Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential Specification(s): A continuous drainage plane at the interior surface of the exterior basement wall will be created from the top of the wall to a drainage field at the bottom of the wall or sub-slab Drainage field will be run to daylight or pumped to the outside Objective(s): Remove moisture on the surface of the exterior basement wall GA Wx Field Guide Georgia Environmental Finance Authority 277 of 486 February 06, 2019 Insulation > Basements and Crawl Spaces > Basements and Crawl Space Walls 4.1402.3 - Basement Wall Insulation--Groundwater Leakage Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential 4.1402.3a - Drainage Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential Specification(s): A continuous drainage plane at the interior surface of the exterior basement wall will be created from the top of the wall to a drainage field at the bottom of the wall or sub-slab Drainage field will be run to daylight or pumped to the outside Objective(s): Remove moisture on the surface of the exterior basement wall GA Wx Field Guide Georgia Environmental Finance Authority 278 of 486 February 06, 2019 Insulation > Basements and Crawl Spaces > Basements and Crawl Space Walls 4.1402.3 - Basement Wall Insulation--Groundwater Leakage Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential 4.1402.3b - Rough finish walls (e.g., rubble walls) Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential Specification(s): Drainage plane will be replaced with a waterproof membrane Only a nonabsorbent insulation that complies with ASTM C665-06 will be applied Insulation will adhere to the waterproof membrane without voids Drainage field will be run to daylight or pumped to the outside Objective(s): Create an air and moisture barrier on the interior side of the exterior basement wall and allow the insulation to conform to the irregularity of the surface Improve thermal performance of the basement and the living space GA Wx Field Guide Georgia Environmental Finance Authority 279 of 486 February 06, 2019 Insulation > Basements and Crawl Spaces > Basements and Crawl Space Walls 4.1402.3 - Basement Wall Insulation--Groundwater Leakage Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential 4.1402.3b - Rough finish walls (e.g., rubble walls) Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential Specification(s): Drainage plane will be replaced with a waterproof membrane Only a non-absorbent insulation that complies with ASTM C665-06 will be applied Insulation will adhere to the waterproof membrane without voids Drainage field will be run to daylight or pumped to the outside Objective(s): Create an air and moisture barrier on the interior side of the exterior basement wall and allow the insulation to conform to the irregularity of the surface Improve thermal performance of the basement and the living space GA Wx Field Guide Georgia Environmental Finance Authority 280 of 486 February 06, 2019 Insulation > Basements and Crawl Spaces > Basements and Crawl Space Walls 4.1402.3 - Basement Wall Insulation--Groundwater Leakage Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential 4.1402.3c - Thermal barrier, insulation Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential Specification(s): A nonabsorbent insulation will be used with a minimum expected service life of 10 years A fire-rated material will be used if the insulation is left exposed Objective(s): Improve thermal performance of the basement and the living space GA Wx Field Guide Georgia Environmental Finance Authority 281 of 486 February 06, 2019 Insulation > Basements and Crawl Spaces > Basements and Crawl Space Walls 4.1402.3 - Basement Wall Insulation--Groundwater Leakage Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential 4.1402.3c - Thermal barrier, insulation Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential Specification(s): A non-absorbent insulation will be used with a minimum expected service life of 10 years A fire-rated material will be used if the insulation is left exposed Objective(s): Improve thermal performance of the basement and the living space GA Wx Field Guide Georgia Environmental Finance Authority 282 of 486 February 06, 2019 Insulation > Basements and Crawl Spaces > Basements and Crawl Space Walls 4.1402.3 - Basement Wall Insulation--Groundwater Leakage Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential 4.1402.3d - Location Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential Specification(s): Insulation will be installed continuously from the top of the band joist to the top of the slab Objective(s): Maintain a continuous thermal boundary on the interior side of the exterior basement wall GA Wx Field Guide Georgia Environmental Finance Authority 283 of 486 February 06, 2019 Insulation > Basements and Crawl Spaces > Basements and Crawl Space Walls 4.1402.3 - Basement Wall Insulation--Groundwater Leakage Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential 4.1402.3d - Location Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential Specification(s): Insulation will be installed continuously from the top of the band joist to the top of the slab Objective(s): Maintain a continuous thermal boundary on the interior side of the exterior basement wall GA Wx Field Guide Georgia Environmental Finance Authority 284 of 486 February 06, 2019 Insulation > Basements and Crawl Spaces > Basements and Crawl Space Walls 4.1402.3 - Basement Wall Insulation--Groundwater Leakage Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential 4.1402.3e - Termite protection Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential Specification(s): Where termite pressure exists, if sub-slab drainage is installed, termite treatment will be performed before re-installing the slab Objective(s): Provide termite protection GA Wx Field Guide Georgia Environmental Finance Authority 285 of 486 February 06, 2019 Insulation > Basements and Crawl Spaces > Basements and Crawl Space Walls 4.1402.3 - Basement Wall Insulation--Groundwater Leakage Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential 4.1402.3e - Termite protection Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential Specification(s): Where termite pressure exists, if subslab drainage is installed, termite treatment will be performed before reinstalling the slab Objective(s): Provide termite protection GA Wx Field Guide Georgia Environmental Finance Authority 286 of 486 February 06, 2019 Insulation > Basements and Crawl Spaces > Basements and Crawl Space Walls 4.1402.3 - Basement Wall Insulation--Groundwater Leakage Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential 4.1402.3f - Insulation attachment Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential Specification(s): Insulation will be attached with a durable connection equal to or better than the manufacturer specifications, whichever is more durable A minimum expected service life of 10 years will be ensured Objective(s): Secure thermal boundary without compromising the insulation GA Wx Field Guide Georgia Environmental Finance Authority 287 of 486 February 06, 2019 Insulation > Basements and Crawl Spaces > Basements and Crawl Space Walls 4.1402.3 - Basement Wall Insulation--Groundwater Leakage Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential 4.1402.3f - Insulation attachment Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential Specification(s): Insulation will be attached with a durable connection equal to or better than the manufacturer specifications, whichever is more durable A minimum expected service life of 10 years will be ensured Objective(s): Secure thermal boundary without compromising the insulation GA Wx Field Guide Georgia Environmental Finance Authority 288 of 486 February 06, 2019 Insulation > Basements and Crawl Spaces > Basements and Crawl Space Walls 4.1402.3 - Basement Wall Insulation--Groundwater Leakage Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential 4.1402.3g - R-value Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential Specification(s): Regional IECC will be followed for required R-value Objective(s): Improve thermal performance of the basement and living space GA Wx Field Guide Georgia Environmental Finance Authority 289 of 486 February 06, 2019 Insulation > Basements and Crawl Spaces > Basements and Crawl Space Walls 4.1402.3 - Basement Wall Insulation--Groundwater Leakage Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential 4.1402.3g - R-value Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential Specification(s): Regional IECC will be followed for required R-value Objective(s): Improve thermal performance of the basement and living space Best Practice Find your regional zone and insulation application to determine r-value GA Wx Field Guide Georgia Environmental Finance Authority 290 of 486 February 06, 2019 Insulation > Basements and Crawl Spaces > Basements and Crawl Space Walls 4.1402.3 - Basement Wall Insulation--Groundwater Leakage Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential 4.1402.3h - Sealing Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential Specification(s): A continuous air barrier on the warm side of the thermal boundary will be installed, including floor-towall and wall-to-ceiling connections Objective(s): Prevent convective air leakage from the basement, through the drainage plane, and back into the basement GA Wx Field Guide Georgia Environmental Finance Authority 291 of 486 February 06, 2019 Insulation > Basements and Crawl Spaces > Basements and Crawl Space Walls 4.1402.3 - Basement Wall Insulation--Groundwater Leakage Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential 4.1402.3h - Sealing Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential Specification(s): A continuous air barrier on the warm side of the thermal boundary will be installed, including floor-towall and wall-to-ceiling connections Objective(s): Prevent convective air leakage from the basement, through the drainage plane, and back into the basement GA Wx Field Guide Georgia Environmental Finance Authority 292 of 486 February 06, 2019 Insulation > Basements and Crawl Spaces > Basements and Crawl Space Walls 4.1402.3 - Basement Wall Insulation--Groundwater Leakage Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential 4.1402.3i - Finish wall requirements Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential Specification(s): International Residential Code (IRC) will be followed for finished wall details in basements Objective(s): Install a durable, finished wall GA Wx Field Guide Georgia Environmental Finance Authority 293 of 486 February 06, 2019 Insulation > Basements and Crawl Spaces > Basements and Crawl Space Walls 4.1402.3 - Basement Wall Insulation--Groundwater Leakage Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential 4.1402.3i - Finish wall requirements Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential Specification(s): IRC will be followed for finished wall details in basements Objective(s): Install a durable, finished wall GA Wx Field Guide Georgia Environmental Finance Authority 294 of 486 February 06, 2019 Insulation > Basements and Crawl Spaces > Basements and Crawl Space Walls 4.1402.3 - Basement Wall Insulation--Groundwater Leakage Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential 4.1402.3j - Onsite documentation Desired Outcome: Basement insulation improves thermal performance and ensures sufficient drying potential Specification(s): A dated receipt signed by the installer will be provided that includes: Coverage area Thickness R-value Objective(s): Document job completion to contract specifications Confirm amount of insulation installed Comply with 16 CFR 460.17 GA Wx Field Guide Georgia Environmental Finance Authority 295 of 486 February 06, 2019 Insulation > Basements and Crawl Spaces > Special Considerations 4.1488.1 - Climate Considerations for Insulating Water Lines Located Between Bottom Board and Ground Desired Outcome: Water supply line does not freeze in cold climates Note: 4.1488.1b - Installation Desired Outcome: Water supply line does not freeze in cold climates Specification(s): Pipe freeze protection system will have thermostatic heat control and circuit protection Insulation will be installed over pipe freeze protection system when necessary Pipe will be protected from wind Objective(s): Ensure fire safety Protect supply pipe from freezing In Progress Properly installed freeze protection heat tape After Insulated, freeze protected water line GA Wx Field Guide Georgia Environmental Finance Authority 296 of 486 February 06, 2019 Insulation > Basements and Crawl Spaces > Special Considerations 4.1488.1b - Installation Tools: 1. Utility knife 2. Rags Materials: 1. Heat tape 2. Zip ties (to attach thermostat) 3. Electrical tape 4. 1/2" thick fiberglass insulation To prevent pipe freezing and reduce the risk of fire, follow manufacturer's instructions carefully. Choose the proper length heat tape for the pipe to be protected. When using multiple lengths of heat tape on long pipes, start subsequent runs of heat tape one foot before the end of the previous run on opposite sides of the pipe. Never overlap or cross heat tape with itself. Complete heat tape installation instructions may be found here: https://www.foremost.com/mygreathome/mobile-homerepair/seasonal/how-to-install-heat-tape.asp 1 Install thermostat in firm contact with the pipe at the coldest point 2 Fasten heat tape to pipe with electrical tape every six inches. 3 Measure and cut insulation to fit water lines. Miter insulation at elbows and tees 4 Fasten insulation to water lines with zip ties 5 Cover all exposed portions of the water supply lines with insulation GA Wx Field Guide Georgia Environmental Finance Authority 297 of 486 February 06, 2019 Insulation > Ducts > Insulating Ducts 4.1601.3 - Insulation and Vapor Barrier Desired Outcome: Minimize condensation Note: 4.1601.3a - Ducts in unconditioned spaces (e.g., crawl space, attic, unconditioned basements) Desired Outcome: Minimize condensation Specification(s): Ducts will have continuous insulation and vapor barrier Insulation will be sufficient to prevent dew point on surface of ducts Objective(s): Minimize condensation GA Wx Field Guide Georgia Environmental Finance Authority 298 of 486 February 06, 2019 Insulation > Ducts > Insulating Ducts 4.1601.3 - Insulation and Vapor Barrier Desired Outcome: Minimize condensation Note: 4.1601.3b - Ducts within floor assemblies Desired Outcome: Minimize condensation Specification(s): Inspection and/or testing will be conducted to determine whether ducts are within thermal, pressure, and vapor boundary If ducts are within thermal, pressure, and vapor boundary, no action will be required If ducts are not within thermal, pressure, and vapor boundary, continuous air barrier, insulation, and vapor retarder will be installed either on the ducts or at the belly liner Objective(s): Minimize condensation GA Wx Field Guide Georgia Environmental Finance Authority 299 of 486 February 06, 2019 Insulation > Ducts > Insulating Ducts 4.1601.3 - Insulation and Vapor Barrier Desired Outcome: Minimize condensation Note: 4.1601.3c - Exposed metal Desired Outcome: Minimize condensation Specification(s): All exposed metal will have continuous insulation and vapor retarder Objective(s): Minimize condensation GA Wx Field Guide Georgia Environmental Finance Authority 300 of 486 February 06, 2019 Insulation > Ducts > Insulating Ducts 4.1601.4 - Insulating Flex Ducts Desired Outcome: Lower conductive heat transfer by ducts and decrease condensation on duct vapor barrier Note: 4.1601.4a - Removal of existing flexible ducting Desired Outcome: Lower conductive heat transfer by ducts and decrease condensation on duct vapor barrier Specification(s): All accessible low R-value flexible ducting will be removed from premises Objective(s): Ensure installation of proper R-value ducts GA Wx Field Guide Georgia Environmental Finance Authority 301 of 486 February 06, 2019 Insulation > Ducts > Insulating Ducts 4.1601.4 - Insulating Flex Ducts Desired Outcome: Lower conductive heat transfer by ducts and decrease condensation on duct vapor barrier Note: 4.1601.4b - Selection of new flexible ducting Desired Outcome: Lower conductive heat transfer by ducts and decrease condensation on duct vapor barrier Specification(s): All flexible ducting will have a minimum of R-8 Objective(s): Minimize thermal conductance through the duct system GA Wx Field Guide Georgia Environmental Finance Authority 302 of 486 February 06, 2019 Insulation > Ducts > Insulating Ducts 4.1601.4 - Insulating Flex Ducts Desired Outcome: Lower conductive heat transfer by ducts and decrease condensation on duct vapor barrier Note: 4.1601.4c - Sizing of new flex Desired Outcome: Lower conductive heat transfer by ducts and decrease condensation on duct vapor barrier Specification(s): Duct-sizing procedures will be conducted when replacing flex duct Objective(s): Improve comfort in rooms Improve fan performance GA Wx Field Guide Georgia Environmental Finance Authority 303 of 486 February 06, 2019 Insulation > Ducts > Insulating Ducts 4.1601.4 - Insulating Flex Ducts Desired Outcome: Lower conductive heat transfer by ducts and decrease condensation on duct vapor barrier Note: 4.1601.4d - Installation of flex Desired Outcome: Lower conductive heat transfer by ducts and decrease condensation on duct vapor barrier Specification(s): Flex duct will be supported in accordance with flex duct manufacturer's directions or local codes Beaded rigid elbow or equivalent will be installed in duct runs whenever change in direction is required Objective(s): Prevent sags, drops, or other bends that may interfere with correct air flow Maintain duct diameter around the turns Maximize air flow and distribution GA Wx Field Guide Georgia Environmental Finance Authority 304 of 486 February 06, 2019 Insulation > Ducts > Insulating Ducts 4.1601.4 - Insulating Flex Ducts Desired Outcome: Lower conductive heat transfer by ducts and decrease condensation on duct vapor barrier Note: 4.1601.4e - Interior liner attachment Desired Outcome: Lower conductive heat transfer by ducts and decrease condensation on duct vapor barrier Specification(s): Interior liner of the flex-to-metal connection will be fastened with tie bands using a tie band tensioning tool For oval flexible duct-to-metal connections, tie bands cannot be used; appropriate mechanical fasteners will be used Objective(s): Create a strong, secure attachment GA Wx Field Guide Georgia Environmental Finance Authority 305 of 486 February 06, 2019 Insulation > Ducts > Insulating Ducts 4.1601.4 - Insulating Flex Ducts Desired Outcome: Lower conductive heat transfer by ducts and decrease condensation on duct vapor barrier Note: 4.1601.4f - Sealing of interior liner Desired Outcome: Lower conductive heat transfer by ducts and decrease condensation on duct vapor barrier Specification(s): UL 181 B-M-listed mastic product will be used to seal the connection Objective(s): Create an airtight connection GA Wx Field Guide Georgia Environmental Finance Authority 306 of 486 February 06, 2019 Insulation > Ducts > Insulating Ducts 4.1601.4 - Insulating Flex Ducts Desired Outcome: Lower conductive heat transfer by ducts and decrease condensation on duct vapor barrier Note: 4.1601.4g - Attachment of exterior liner Desired Outcome: Lower conductive heat transfer by ducts and decrease condensation on duct vapor barrier Specification(s): Liner will be pulled up onto the metal duct as far as possible before securing The exterior liner of the flex duct will be fastened with tie bands using a tie band tensioning tool Objective(s): Create a strong, durable attachment GA Wx Field Guide Georgia Environmental Finance Authority 307 of 486 February 06, 2019 Insulation > Ducts > Insulating Ducts 4.1601.4 - Insulating Flex Ducts Desired Outcome: Lower conductive heat transfer by ducts and decrease condensation on duct vapor barrier Note: 4.1601.4h - Sealing of all accessible ducts Desired Outcome: Lower conductive heat transfer by ducts and decrease condensation on duct vapor barrier Specification(s): All accessible joints, seams, and connections will be sealed with UL 181 approved mastics Objective(s): Minimize duct leakage GA Wx Field Guide Georgia Environmental Finance Authority 308 of 486 February 06, 2019 Insulation > Ducts > Insulating Ducts 4.1601.4 - Insulating Flex Ducts Desired Outcome: Lower conductive heat transfer by ducts and decrease condensation on duct vapor barrier Note: 4.1601.4i - Insulation of all fittings Desired Outcome: Lower conductive heat transfer by ducts and decrease condensation on duct vapor barrier Specification(s): All metal fittings, including boots, elbows, and takeoffs, will be insulated separately using a minimum of R-8 duct wrap with a vapor barrier mechanically fastened (e.g., stitch staples, tie bands) and sealed with no exposed metal Objective(s): Minimize thermal conductance of the duct system Minimize condensation GA Wx Field Guide Georgia Environmental Finance Authority 309 of 486 February 06, 2019 Insulation > Ducts > Insulating Ducts 4.1601.4 - Insulating Flex Ducts Desired Outcome: Lower conductive heat transfer by ducts and decrease condensation on duct vapor barrier Note: 4.1601.4j - Completeness of vapor barrier Desired Outcome: Lower conductive heat transfer by ducts and decrease condensation on duct vapor barrier Specification(s): Vapor barrier of all duct insulation will be taped to the flex duct using the taping system required by the manufacturer of the duct insulation Vapor barrier will be sealed to the belly liner Objective(s): Ensure a complete vapor barrier GA Wx Field Guide Georgia Environmental Finance Authority 310 of 486 February 06, 2019 Insulation > Ducts > Insulating Ducts 4.1601.4 - Insulating Flex Ducts Desired Outcome: Lower conductive heat transfer by ducts and decrease condensation on duct vapor barrier Note: 4.1601.4k - Vermin proofing Desired Outcome: Lower conductive heat transfer by ducts and decrease condensation on duct vapor barrier Specification(s): Vermin access points will be identified and treated appropriately (e.g., seal access holes) Objective(s): Ensure long-term durability of the building materials GA Wx Field Guide Georgia Environmental Finance Authority 311 of 486 February 06, 2019 Insulation > Ducts > Insulating Ducts 4.1601.4 - Insulating Flex Ducts Desired Outcome: Lower conductive heat transfer by ducts and decrease condensation on duct vapor barrier Note: 4.1601.4l - CAZ testing Desired Outcome: Lower conductive heat transfer by ducts and decrease condensation on duct vapor barrier Specification(s): CAZ testing will be performed where combustion appliances are utilized Objective(s): Identify unsafe equipment operating conditions GA Wx Field Guide Georgia Environmental Finance Authority 312 of 486 February 06, 2019 Insulation > Ducts > Insulating Ducts 4.1601.5 - Insulating Metal Ducts Desired Outcome: Lowered thermal conductance of duct system and minimized condensation on the duct system Note: 4.1601.5a - Selection of duct insulation material Desired Outcome: Lowered thermal conductance of duct system and minimized condensation on the duct system Specification(s): Duct insulation will be a minimum of R-8, in accordance with local code or buried under attic insulation, whichever is a greater R-value, and have an attached and continuous vapor barrier Hot humid and warm coastal regions will not bury ducts Objective(s): Decrease heat loss and condensation problems Before Uninsulated ducts in unconditioned spaces are an energy drain After Properly insulated ducts operate at much higher rates of efficiency In mixed or hot/humid climates, ensure that ducts are properly sealed, wrapped in insulation, and have an intact, sealed vapor barrier (typically kraft-backed foil or shiny Mylar material) before blowing loose fill insulation over them. The duct wrap and vapor barrier minimizes condensation forming on the ducts. GA Wx Field Guide Georgia Environmental Finance Authority 313 of 486 February 06, 2019 Insulation > Ducts > Insulating Ducts 4.1601.5a - Selection of duct insulation material Ducts in unconditioned areas should OR ducts can be buried in loose fill in Burying ducts is discouraged in warm have R-8 insulation with vapor barrier attic spaces in drier climates coastal and hot humid regions GA Wx Field Guide Georgia Environmental Finance Authority 314 of 486 February 06, 2019 Insulation > Ducts > Insulating Ducts 4.1601.5 - Insulating Metal Ducts Desired Outcome: Lowered thermal conductance of duct system and minimized condensation on the duct system Note: 4.1601.5b - Duct sealing Desired Outcome: Lowered thermal conductance of duct system and minimized condensation on the duct system Specification(s): All accessible ducts will be sealed with a UL-181 mastic before insulation is applied Objective(s): Minimize duct leakage Before Unsealed joints and connections need to be sealed to prevent health risks After Sealed ductwork connections help prevent leakage Tools: 1. Putty knife Materials: 1. UL-181 mastic 2. Fiberglass mesh tape test text GA Wx Field Guide Georgia Environmental Finance Authority 315 of 486 February 06, 2019 Insulation > Ducts > Insulating Ducts 4.1601.5b - Duct sealing 1 Prepare work area by assessing any safety concerns 2 3 Wrap joint with fiberglass mesh tape Apply UL 181 mastic to seal joint GA Wx Field Guide Georgia Environmental Finance Authority 316 of 486 February 06, 2019 Insulation > Ducts > Insulating Ducts 4.1601.5 - Insulating Metal Ducts Desired Outcome: Lowered thermal conductance of duct system and minimized condensation on the duct system Note: 4.1601.5c - Attachment of duct insulation Desired Outcome: Lowered thermal conductance of duct system and minimized condensation on the duct system Specification(s): Duct insulation will be mechanically fastened (e.g., stitch staples, tie bands) and sealed with no exposed metal Duct insulation will be secured to the duct system using metal wire or rot-proof nylon twine Pattern of the wire or twine will be sufficient to securely hold the duct insulation tight to the duct Mechanical fastening will be sufficient to securely hold the duct insulation in place and tight to the duct Objective(s): Ensure a secure connection between the duct system and the duct insulation Ensure performance of the installed material Minimize condensation GA Wx Field Guide Georgia Environmental Finance Authority 317 of 486 February 06, 2019 Insulation > Ducts > Insulating Ducts 4.1601.5c - Attachment of duct insulation Before Materials holding insulation in place should not compress or kink duct Tools: 1. Scissors 2. Metal snips After Durable materials can be attached without compressing insulation Materials: 1. Nylon twine 2. Wire 3. Tie bands GA Wx Field Guide Georgia Environmental Finance Authority 318 of 486 February 06, 2019 Insulation > Ducts > Insulating Ducts 4.1601.5 - Insulating Metal Ducts Desired Outcome: Lowered thermal conductance of duct system and minimized condensation on the duct system Note: 4.1601.5d - Taping of the vapor barrier Desired Outcome: Lowered thermal conductance of duct system and minimized condensation on the duct system Specification(s): Using a tape approved by the manufacturer, all seams and connection of the vapor barrier will be taped so that no metal is exposed No gaps will exist between pieces of duct insulation Objective(s): Prevent gaps in the vapor barrier of the insulation Before Unsecured and sealed insulation around ducts is useless Tools: 1. Utility knife After All seams should be sealed with UL-181 duct tape to preserve vapor barrier Materials: 1. UL-181 tape 2. R-8 duct insulation with vapor barrier GA Wx Field Guide Georgia Environmental Finance Authority 319 of 486 February 06, 2019 Insulation > Ducts > Insulating Ducts 4.1601.5 - Insulating Metal Ducts Desired Outcome: Lowered thermal conductance of duct system and minimized condensation on the duct system Note: 4.1601.5e - Vermin proofing Desired Outcome: Lowered thermal conductance of duct system and minimized condensation on the duct system Specification(s): Vermin access points will be identified and treated appropriately (e.g., seal access holes) Objective(s): Ensure long-term durability of the building materials GA Wx Field Guide Georgia Environmental Finance Authority 320 of 486 February 06, 2019 Heating and Cooling > Forced Air > Design 5.3001.1 - Load Calculation and Equipment Selection Desired Outcome: Equipment sized properly and operates efficiently 5.3001.1a - Load calculation Desired Outcome: Equipment sized properly and operates efficiently Specification(s): Load calculation will be performed in accordance with ANSI/ACCA 2 Manual J (Residential Load Calculation) and manufacturer specifications Objective(s): Properly size equipment for load GA Wx Field Guide Georgia Environmental Finance Authority 321 of 486 February 06, 2019 Heating and Cooling > Forced Air > Design 5.3001.1 - Load Calculation and Equipment Selection Desired Outcome: Equipment sized properly and operates efficiently 5.3001.1b - Equipment selection Desired Outcome: Equipment sized properly and operates efficiently Specification(s): Equipment selection will be performed in accordance with ANSI/ACCA Manual S and manufacturer specifications Objective(s): Ensure equipment is able to heat, cool, and dehumidify the house GA Wx Field Guide Georgia Environmental Finance Authority 322 of 486 February 06, 2019 Heating and Cooling > Forced Air > Design 5.3001.1 - Load Calculation and Equipment Selection Desired Outcome: Equipment sized properly and operates efficiently 5.3001.1c - Air filtration Desired Outcome: Equipment sized properly and operates efficiently Specification(s): New central forced air HVAC systems will have minimum MERV 6 filtration with no air bypass around the filters Objective(s): Particle removal to protect equipment and help maintain indoor air quality GA Wx Field Guide Georgia Environmental Finance Authority 323 of 486 February 06, 2019 Heating and Cooling > Forced Air > Design 5.3001.3 - Replace Return Air Systems that Incorporate Floor Cavity (Belly) and/or Attic as the Return Air Pathway Desired Outcome: Effective, efficient, safe, and durable return air system Note: 5.3001.3d - Combustion Appliance Zone (CAZ) testing Desired Outcome: Effective, efficient, safe, and durable return air system Specification(s): CAZ testing will be performed where combustion appliances are utilized Objective(s): Identify unsafe equipment operating conditions Best Practice Tools: 1. Manometer 2. Mirror 3. Chemical smoke pencil 4. Stopwatch or watch with second hand 5. Combustion analyzer 6. 1/4" air line tubing 7. Gas leak detector At the end of each day in which duct sealing or repair is performed, conduct Combustion Appliance Zone (CAZ) testing GA Wx Field Guide Georgia Environmental Finance Authority 324 of 486 February 06, 2019 Heating and Cooling > Forced Air > System Assessment and Maintenance 5.3003.1 - Data Plate Verification Desired Outcome: Data for commissioning and future service work is recorded 5.3003.1a - Data plate verification Desired Outcome: Data for commissioning and future service work is recorded Specification(s): Equipment will be visually inspected Information will be recorded from the equipment data plates indoors and outdoors where available Objective(s): Ensure technician has equipment data necessary for commissioning and future service work GA Wx Field Guide Georgia Environmental Finance Authority 325 of 486 February 06, 2019 Heating and Cooling > Forced Air > System Assessment and Maintenance 5.3003.3 - Evaluating Air Flow Desired Outcome: Air flow is properly tested Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 5.3003.3a - Total air flow Desired Outcome: Air flow is properly tested Specification(s): Total system air flow will be measured by one of the following methods: Temperature rise Flow plate Fan depressurization device(e.g., Duct Blaster, DucTester) Objective(s): Ensure equipment: Operates as designed Operates efficiently Provides comfort Operates safely Is durable GA Wx Field Guide Georgia Environmental Finance Authority 326 of 486 February 06, 2019 Heating and Cooling > Forced Air > System Assessment and Maintenance 5.3003.3 - Evaluating Air Flow Desired Outcome: Air flow is properly tested Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 5.3003.3b - External static pressure Desired Outcome: Air flow is properly tested Specification(s): External static pressure will be in accordance with manufacturer specifications Objective(s): Ensure equipment: Operates as designed Operates efficiently Provides comfort Operates safely Is durable GA Wx Field Guide Georgia Environmental Finance Authority 327 of 486 February 06, 2019 Heating and Cooling > Forced Air > System Assessment and Maintenance 5.3003.3 - Evaluating Air Flow Desired Outcome: Air flow is properly tested Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 5.3003.3c - Pressure Desired Outcome: Air flow is properly tested Specification(s): Pressure drop across cooling coils will be in accordance with manufacturer specifications Objective(s): Ensure equipment: Operates as designed Operates efficiently Provides comfort Operates safely Is durable GA Wx Field Guide Georgia Environmental Finance Authority 328 of 486 February 06, 2019 Heating and Cooling > Forced Air > System Assessment and Maintenance 5.3003.3 - Evaluating Air Flow Desired Outcome: Air flow is properly tested Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 5.3003.3d - Filter Inspection Desired Outcome: Air flow is properly tested Specification(s): Visual inspection to verify filter type is per manufacturer specifications, and is clean Objective(s): Ensure equipment: Operates as designed Operates efficiently Provides comfort Operates safely Is durable GA Wx Field Guide Georgia Environmental Finance Authority 329 of 486 February 06, 2019 Heating and Cooling > Forced Air > System Assessment and Maintenance 5.3003.3 - Evaluating Air Flow Desired Outcome: Air flow is properly tested Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 5.3003.3e - Balancing room flow: new ductwork Desired Outcome: Air flow is properly tested Specification(s): Proper air flow delivery to each room will be ensured by one of the following: Measuring air flow at each register OR Measuring heat rise, room pressures, and interviewing residents to ensure their comfort. Objective(s): Ensure equipment: Operates as designed Operates efficiently Provides comfort Operates safely Is durable GA Wx Field Guide Georgia Environmental Finance Authority 330 of 486 February 06, 2019 Heating and Cooling > Forced Air > System Assessment and Maintenance 5.3003.3 - Evaluating Air Flow Desired Outcome: Air flow is properly tested Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 5.3003.3f - Supply wet bulb and dry bulb Desired Outcome: Air flow is properly tested Specification(s): Supply and return wet bulb (wet bulb temperature is measured for cooling systems only) and dry bulb air temperatures will be recorded Objective(s): Ensure equipment: Operates as designed Operates efficiently Provides comfort Operates safely Is durable GA Wx Field Guide Georgia Environmental Finance Authority 331 of 486 February 06, 2019 Heating and Cooling > Forced Air > System Assessment and Maintenance 5.3003.3 - Evaluating Air Flow Desired Outcome: Air flow is properly tested Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 5.3003.3h - Temperature rise: gas and oil furnaces only Desired Outcome: Air flow is properly tested Specification(s): Temperature rise between the supply and return will be in accordance with manufacturer specifications Objective(s): Ensure equipment: Operates as designed Operates efficiently Provides comfort Operates safely Is durable GA Wx Field Guide Georgia Environmental Finance Authority 332 of 486 February 06, 2019 Heating and Cooling > Forced Air > System Assessment and Maintenance 5.3003.5 - Refrigerant Line Inspection Desired Outcome: Refrigerant lines properly installed Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 5.3003.5a - Insulation Desired Outcome: Refrigerant lines properly installed Specification(s): All suction or vapor refrigerant lines, will be insulated to a minimum of R-4 High-side or liquid refrigerant lines will not be insulated unless specified by the equipment's manufacturer Objective(s): Ensure refrigerant lines do not gain excessive heat, or cause condensation to occur inside the building envelope GA Wx Field Guide Georgia Environmental Finance Authority 333 of 486 February 06, 2019 Heating and Cooling > Forced Air > System Assessment and Maintenance 5.3003.5 - Refrigerant Line Inspection Desired Outcome: Refrigerant lines properly installed Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 5.3003.5b - Ultraviolet (UV) protection of insulation Desired Outcome: Refrigerant lines properly installed Specification(s): If exposed to sunlight, refrigerant line insulation will be protected from UV degradation in accordance with manufacturer specifications, IRC or local code Objective(s): Install insulation so it does not degrade GA Wx Field Guide Georgia Environmental Finance Authority 334 of 486 February 06, 2019 Heating and Cooling > Forced Air > System Assessment and Maintenance 5.3003.5 - Refrigerant Line Inspection Desired Outcome: Refrigerant lines properly installed Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 5.3003.5c - Sizing Desired Outcome: Refrigerant lines properly installed Specification(s): Refrigerant lines will be sized to meet manufacturer specifications for the installed equipment Objective(s): Ensure system moves appropriate volume of refrigerant GA Wx Field Guide Georgia Environmental Finance Authority 335 of 486 February 06, 2019 Heating and Cooling > Forced Air > System Assessment and Maintenance 5.3003.5 - Refrigerant Line Inspection Desired Outcome: Refrigerant lines properly installed Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 5.3003.5d - Installation quality Desired Outcome: Refrigerant lines properly installed Specification(s): Refrigerant lines will be installed without kinks, crimps, or excessive bends Objective(s): Ensure system moves appropriate volume of refrigerant GA Wx Field Guide Georgia Environmental Finance Authority 336 of 486 February 06, 2019 Heating and Cooling > Forced Air > System Assessment and Maintenance 5.3003.5 - Refrigerant Line Inspection Desired Outcome: Refrigerant lines properly installed Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 5.3003.5e - Support Desired Outcome: Refrigerant lines properly installed Specification(s): Refrigerant lines will be routed, supported, and secured to house in a manner that protects the line from damage by workers or occupants Objective(s): Ensure refrigerant lines do not move, vibrate, or sag Protect lines from damage GA Wx Field Guide Georgia Environmental Finance Authority 337 of 486 February 06, 2019 Heating and Cooling > Forced Air > System Assessment and Maintenance 5.3003.6 - Evaluating Sequence of Operation Desired Outcome: Sequence of operation of the system verified 5.3003.6a - Verification Desired Outcome: Sequence of operation of the system verified Specification(s): The sequence of operation of the system will be verified in accordance with the manufacturer installation, operation, and maintenance manual. If every effort to secure the manufacturer's manual proves unsuccessful, the technician will rely on standard industry testing protocols. Objective(s): Ensure system components function and operate in the correct sequence GA Wx Field Guide Georgia Environmental Finance Authority 338 of 486 February 06, 2019 Heating and Cooling > Forced Air > System Assessment and Maintenance 5.3003.7 - Occupant Education Desired Outcome: Occupants understand their role and responsibility in the safe, effective, and efficient operation of the equipment 5.3003.7h - Carbon monoxide (CO) Desired Outcome: Occupants understand their role and responsibility in the safe, effective, and efficient operation of the equipment Specification(s): A carbon monoxide (CO) alarm will be installed Objective(s): Occupant will be made aware of operation of CO alarm Best Practice Carbon Monoxide alarms should be installed according to local codes Best Practice Alarms should be mounted near sleeping areas--such as the one marked in red GA Wx Field Guide Georgia Environmental Finance Authority 339 of 486 February 06, 2019 Heating and Cooling > Forced Air > System Assessment and Maintenance 5.3003.11 - Heating and Cooling Controls Desired Outcome: Heating and cooling controls installed and set properly 5.3003.11a - Removal of mercury- based thermostats Desired Outcome: Heating and cooling controls installed and set properly Specification(s): Mercury-based thermostat will be removed safely and disposed of in accordance with EPA regulations Objective(s): Protect workers and occupants from injury Protect environment from damage Unsafe Mercury thermostats should be replaced and disposed of properly Unsafe Do NOT dispose of mercury thermostats in the trash--find local recycling Paraphrased from 40 CFR 273.14: A universal waste mercury-containing thermostat or container containing only universal waste mercury-containing thermostats should be labeled or marked clearly with any of the following phrases: "Universal Waste-Mercury Thermostat(s)," "Waste Mercury Thermostat(s)," or "Used Mercury Thermostat(s)." **Contact thermostat-recycle.org or earth911.org for recycling options. GA Wx Field Guide Georgia Environmental Finance Authority 340 of 486 February 06, 2019 Heating and Cooling > Forced Air > System Assessment and Maintenance 5.3003.12 - Package Units--Repair and Service Desired Outcome: Maximize efficiency and performance of existing system, when required by the authority having jurisdiction 5.3003.12a - Work assessment Desired Outcome: Maximize efficiency and performance of existing system, when required by the authority having jurisdiction Specification(s): Assessment will be performed to identify problems with air, refrigerant, electrical, load, safety, indoor environmental quality (IEQ), and/or other needed repairs If new installation or replacement is necessary, ACCA Manual J, Manual S, and/or Manual D will be referenced to determine if the existing duct system is adequate for the sizing of the furnace, and the procedures outlined in ANSI/ACCA 5 QI HVAC Quality Installation Specification will be followed Objective(s): Determine the scope of repair, service, and level of expertise required to perform the work GA Wx Field Guide Georgia Environmental Finance Authority 341 of 486 February 06, 2019 Heating and Cooling > Forced Air > System Assessment and Maintenance 5.3003.12 - Package Units--Repair and Service Desired Outcome: Maximize efficiency and performance of existing system, when required by the authority having jurisdiction 5.3003.12b - Remove existing system components Desired Outcome: Maximize efficiency and performance of existing system, when required by the authority having jurisdiction Specification(s): Nonsalvageable components and waste will be removed and disposed of properly Refrigerant will be removed in accordance with EPA requirements Objective(s): Prepare for installation of new equipment or components Ensure environmental and legal compliance GA Wx Field Guide Georgia Environmental Finance Authority 342 of 486 February 06, 2019 Heating and Cooling > Forced Air > System Assessment and Maintenance 5.3003.12 - Package Units--Repair and Service Desired Outcome: Maximize efficiency and performance of existing system, when required by the authority having jurisdiction 5.3003.12c - Repairs Desired Outcome: Maximize efficiency and performance of existing system, when required by the authority having jurisdiction Specification(s): Repairs will be performed by qualified specialist as identified in the assessment Maintenance will be done in accordance with ANSI/ACCA 4 Maintenance of Residential HVAC Systems and ANSI/ACCA 6 HVAC System Cleanliness Objective(s): Optimize performance of the system GA Wx Field Guide Georgia Environmental Finance Authority 343 of 486 February 06, 2019 Heating and Cooling > Forced Air > System Assessment and Maintenance 5.3003.12 - Package Units--Repair and Service Desired Outcome: Maximize efficiency and performance of existing system, when required by the authority having jurisdiction 5.3003.12d - Service existing components Desired Outcome: Maximize efficiency and performance of existing system, when required by the authority having jurisdiction Specification(s): Service will be performed by qualified personnel as identified in the assessment Maintenance will be done in accordance with ANSI/ACCA 4 Maintenance of Residential HVAC Systems and ANSI/ACCA 6 HVAC System Cleanliness Objective(s): Optimize performance of the system GA Wx Field Guide Georgia Environmental Finance Authority 344 of 486 February 06, 2019 Heating and Cooling > Forced Air > System Assessment and Maintenance 5.3003.12 - Package Units--Repair and Service Desired Outcome: Maximize efficiency and performance of existing system, when required by the authority having jurisdiction 5.3003.12e - Commissioning Desired Outcome: Maximize efficiency and performance of existing system, when required by the authority having jurisdiction Specification(s): Equipment will be fully tested for proper operation following procedures outlined in ANSI/ACCA 5 QI Property manager/occupant will be educated on how to operate and maintain system, including thermostat operation and system changes Objective(s): Ensure proper system operation Ensure property manager/occupant is educated GA Wx Field Guide Georgia Environmental Finance Authority 345 of 486 February 06, 2019 Heating and Cooling > Forced Air > System Assessment and Maintenance 5.3003.13 - Refrigerant Charge Evaluation Desired Outcome: Properly charged system 5.3003.13a - Prerequisite Desired Outcome: Properly charged system Specification(s): Leak detection, air flow, and refrigerant line inspection will be checked and repaired to determine need for refrigerant charge Objective(s): Eliminate possible sources of other problems before addressing refrigerant charging GA Wx Field Guide Georgia Environmental Finance Authority 346 of 486 February 06, 2019 Heating and Cooling > Forced Air > System Assessment and Maintenance 5.3003.13 - Refrigerant Charge Evaluation Desired Outcome: Properly charged system 5.3003.13b - Qualified contractor Desired Outcome: Properly charged system Specification(s): Charge will be tested and work performed by a qualified contractor Refrigerant charge will be in accordance with ANSI/ACCA 5 QI HVAC Quality Installation Specification refrigerant charging requirements for mixed humid, hot humid, marine, and hot dry climates Objective(s): Ensure compliance with codes and environmental regulations Ensure proper equipment charge GA Wx Field Guide Georgia Environmental Finance Authority 347 of 486 February 06, 2019 Heating and Cooling > Forced Air > System Assessment and Maintenance 5.3003.13 - Refrigerant Charge Evaluation Desired Outcome: Properly charged system 5.3003.13c - Documentation Desired Outcome: Properly charged system Specification(s): Contractor will provide documentation of work performed Objective(s): Maintain record of work performed GA Wx Field Guide Georgia Environmental Finance Authority 348 of 486 February 06, 2019 Heating and Cooling > Forced Air > System Assessment and Maintenance 5.3003.13 - Refrigerant Charge Evaluation Desired Outcome: Properly charged system 5.3003.13d - Quality assurance Desired Outcome: Properly charged system Specification(s): External static pressure will be measured and documented EPA refrigerant charge log will be provided Objective(s): Ensure external static pressure is within range in accordance with manufacturer specifications Ensure quality workmanship GA Wx Field Guide Georgia Environmental Finance Authority 349 of 486 February 06, 2019 Heating and Cooling > Forced Air > System Assessment and Maintenance 5.3003.14 - Combustion Analysis of Gas-Fired Appliances (LP and Natural Gas) Desired Outcome: Analysis of critical components and operations completed in accordance with industry and manufacturer specifications 5.3003.14a - Gas Pressure Desired Outcome: Analysis of critical components and operations completed in accordance with industry and manufacturer specifications Specification(s): Measurement will be verified by a certified professional in accordance with fuel type and manufacturer specifications Objective(s): Ensure equipment: Operates as designed Operates safely Operates efficiently Is durable GA Wx Field Guide Georgia Environmental Finance Authority 350 of 486 February 06, 2019 Heating and Cooling > Forced Air > System Assessment and Maintenance 5.3003.14 - Combustion Analysis of Gas-Fired Appliances (LP and Natural Gas) Desired Outcome: Analysis of critical components and operations completed in accordance with industry and manufacturer specifications 5.3003.14b - Place appliance in operation Desired Outcome: Analysis of critical components and operations completed in accordance with industry and manufacturer specifications Specification(s): Heating equipment will be placed in operation in accordance with applicable NFPA standards and manufacturer specifications when available Objective(s): Ensure equipment: Operates as designed Operates safely Operates efficiently Is durable GA Wx Field Guide Georgia Environmental Finance Authority 351 of 486 February 06, 2019 Heating and Cooling > Forced Air > System Assessment and Maintenance 5.3003.14 - Combustion Analysis of Gas-Fired Appliances (LP and Natural Gas) Desired Outcome: Analysis of critical components and operations completed in accordance with industry and manufacturer specifications 5.3003.14c - Carbon dioxide (CO2)and oxygen (O2) Desired Outcome: Analysis of critical components and operations completed in accordance with industry and manufacturer specifications Specification(s): Measurement will be verified in accordance with industry manuals (e.g., Testo, Bacharach) Objective(s): Ensure equipment: Operates as designed Operates safely Operates efficiently Is durable GA Wx Field Guide Georgia Environmental Finance Authority 352 of 486 February 06, 2019 Heating and Cooling > Forced Air > System Assessment and Maintenance 5.3003.14 - Combustion Analysis of Gas-Fired Appliances (LP and Natural Gas) Desired Outcome: Analysis of critical components and operations completed in accordance with industry and manufacturer specifications 5.3003.14d - Carbon monoxide (CO) in flue gas Desired Outcome: Analysis of critical components and operations completed in accordance with industry and manufacturer specifications Specification(s): CO in the undiluted flue gas will be less than 400 ppm air-free Objective(s): Ensure equipment: Operates as designed Operates safely Operates efficiently Is durable GA Wx Field Guide Georgia Environmental Finance Authority 353 of 486 February 06, 2019 Heating and Cooling > Forced Air > System Assessment and Maintenance 5.3003.14 - Combustion Analysis of Gas-Fired Appliances (LP and Natural Gas) Desired Outcome: Analysis of critical components and operations completed in accordance with industry and manufacturer specifications 5.3003.14e - Testing/inspection holes Desired Outcome: Analysis of critical components and operations completed in accordance with industry and manufacturer specifications Specification(s): All testing and inspection holes will be sealed with manufacturer approved materials Objective(s): Ensure equipment: Operates as designed Operates safely Operates efficiently Is durable GA Wx Field Guide Georgia Environmental Finance Authority 354 of 486 February 06, 2019 Heating and Cooling > Forced Air > System Assessment and Maintenance 5.3003.16 - Evaluating Electrical Service Desired Outcome: Electrical components properly tested Note: 5.3003.16a - Service entrance Desired Outcome: Electrical components properly tested Specification(s): Homes will have a four-wire service entrance to the panel box to ensure a wiring system that is nominally rated at 120/240 volts and allows for proper grounding Grounding at the service entrance will be checked to determine proper grounding of the home Objective(s): Ensure occupant and worker safety GA Wx Field Guide Georgia Environmental Finance Authority 355 of 486 February 06, 2019 Heating and Cooling > Forced Air > System Assessment and Maintenance 5.3003.16 - Evaluating Electrical Service Desired Outcome: Electrical components properly tested Note: 5.3003.16b - Polarity Desired Outcome: Electrical components properly tested Specification(s): Polarity of equipment will be verified by a qualified technician if wiring is to be modified or repaired Objective(s): Ensure equipment: Operates as designed Operates safely GA Wx Field Guide Georgia Environmental Finance Authority 356 of 486 February 06, 2019 Heating and Cooling > Forced Air > System Assessment and Maintenance 5.3003.16 - Evaluating Electrical Service Desired Outcome: Electrical components properly tested Note: 5.3003.16c - Voltage: incoming power Desired Outcome: Electrical components properly tested Specification(s): Voltage will be in accordance with manufacturer specifications Objective(s): Ensure equipment operates as designed GA Wx Field Guide Georgia Environmental Finance Authority 357 of 486 February 06, 2019 Heating and Cooling > Forced Air > System Assessment and Maintenance 5.3003.16 - Evaluating Electrical Service Desired Outcome: Electrical components properly tested Note: 5.3003.16d - Voltage: contactor Desired Outcome: Electrical components properly tested Specification(s): Voltage drop will be within acceptable range in accordance with manufacturer specifications Objective(s): Ensure contactor does not overheat Ensure equipment operates as designed GA Wx Field Guide Georgia Environmental Finance Authority 358 of 486 February 06, 2019 Heating and Cooling > Forced Air > System Assessment and Maintenance 5.3003.16 - Evaluating Electrical Service Desired Outcome: Electrical components properly tested Note: 5.3003.16e - Grounding Desired Outcome: Electrical components properly tested Specification(s): Grounding will be connected in compliance with local code requirements, ANSI/NEMA GR 1-2007, and NFPA 70 National Electric Code Frames of home sections will be bonded with copper wire Bonding lug will be selected to prevent corrosion due to dissimilar metals Objective(s): Ensure equipment: Operates as designed Operates safely Ensure ground continuity among sections GA Wx Field Guide Georgia Environmental Finance Authority 359 of 486 February 06, 2019 Heating and Cooling > Forced Air > System Assessment and Maintenance 5.3003.16 - Evaluating Electrical Service Desired Outcome: Electrical components properly tested Note: 5.3003.16f - Blower amperage Desired Outcome: Electrical components properly tested Specification(s): Amperage will not exceed manufacturer full load amperage Objective(s): Ensure equipment: Operates as designed Operates efficiently Operates safely GA Wx Field Guide Georgia Environmental Finance Authority 360 of 486 February 06, 2019 Heating and Cooling > Forced Air > System Assessment and Maintenance 5.3003.16 - Evaluating Electrical Service Desired Outcome: Electrical components properly tested Note: 5.3003.16g - Compressor amperage Desired Outcome: Electrical components properly tested Specification(s): Amperage will not exceed manufacturer full load amperage Objective(s): Ensure equipment: Operates as designed Operates efficiently Operates safely GA Wx Field Guide Georgia Environmental Finance Authority 361 of 486 February 06, 2019 Heating and Cooling > Forced Air > System Assessment and Maintenance 5.3003.16 - Evaluating Electrical Service Desired Outcome: Electrical components properly tested Note: 5.3003.16h - Door switch operation Desired Outcome: Electrical components properly tested Specification(s): Blower compartment safety switch operation will be verified, if present Objective(s): Ensure blower: Does not operate during service Cannot backdraft a flue when the door is off GA Wx Field Guide Georgia Environmental Finance Authority 362 of 486 February 06, 2019 Heating and Cooling > Forced Air > System Assessment and Maintenance 5.3003.16 - Evaluating Electrical Service Desired Outcome: Electrical components properly tested Note: 5.3003.16i - Heat pump: emergency heat Desired Outcome: Electrical components properly tested Specification(s): Emergency heat circuit functions will be verified Objective(s): Ensure system delivers heat in case of compressor failure GA Wx Field Guide Georgia Environmental Finance Authority 363 of 486 February 06, 2019 Heating and Cooling > Shading > Reflective Roofs 5.3202.1 - Reflective Coatings on Metal Roofs Desired Outcome: Reduce solar heat gain for manufactured homes Note: 5.3202.1a - Assessment Desired Outcome: Reduce solar heat gain for manufactured homes Specification(s): Existing roof coating will be assessed for hazardous material Objective(s): Ensure worker and occupant safety GA Wx Field Guide Georgia Environmental Finance Authority 364 of 486 February 06, 2019 Heating and Cooling > Shading > Reflective Roofs 5.3202.1 - Reflective Coatings on Metal Roofs Desired Outcome: Reduce solar heat gain for manufactured homes Note: 5.3202.1b - Preparation Desired Outcome: Reduce solar heat gain for manufactured homes Specification(s): Roof will be stripped of all debris, algae, and peeled and loose coating Repairs to roof and penetrations will be made before application Objective(s): Ensure roof is clean, dry, and structurally sound for proper adhesion of new coating GA Wx Field Guide Georgia Environmental Finance Authority 365 of 486 February 06, 2019 Heating and Cooling > Shading > Reflective Roofs 5.3202.1 - Reflective Coatings on Metal Roofs Desired Outcome: Reduce solar heat gain for manufactured homes Note: 5.3202.1c - Materials selection Desired Outcome: Reduce solar heat gain for manufactured homes Specification(s): Material will be approved for application to metal and existing roof coating Material will be an ENERGY STAR qualified reflective coating Roof coating will be durable, flexible, reflective, and meet ASTM D412, ASTM D1737, and UL 790 Class A Objective(s): Provide proper reflective coating GA Wx Field Guide Georgia Environmental Finance Authority 366 of 486 February 06, 2019 Heating and Cooling > Shading > Reflective Roofs 5.3202.1 - Reflective Coatings on Metal Roofs Desired Outcome: Reduce solar heat gain for manufactured homes Note: 5.3202.1d - Application Desired Outcome: Reduce solar heat gain for manufactured homes Specification(s): Roof-coating material will be applied in accordance with manufacturer specifications Objective(s): Ensure proper application GA Wx Field Guide Georgia Environmental Finance Authority 367 of 486 February 06, 2019 Heating and Cooling > Shading > Reflective Roofs 5.3202.1 - Reflective Coatings on Metal Roofs Desired Outcome: Reduce solar heat gain for manufactured homes Note: 5.3202.1e - Occupant education Desired Outcome: Reduce solar heat gain for manufactured homes Specification(s): Occupant will be educated on the maintenance of reflective coating per manufacturer specifications, including annual inspection and cleaning Objective(s): Preserve integrity and effectiveness of reflective coating GA Wx Field Guide Georgia Environmental Finance Authority 368 of 486 February 06, 2019 Ventilation > Exhaust > Components 6.6002.3 - Exhaust-Only Ventilation--Fan Intake Grille Location Desired Outcome: Exhaust grille location optimizes either primary or local ventilation Note: 6.6002.3a - Primary whole house ventilation Desired Outcome: Exhaust grille location optimizes either primary or local ventilation Specification(s): Fan intake grille will be installed in a central location within the main body of the house Ensure it is accessible for filter change and cleaning Objective(s): Provide whole house air exchange GA Wx Field Guide Georgia Environmental Finance Authority 369 of 486 February 06, 2019 Ventilation > Exhaust > Components 6.6002.3 - Exhaust-Only Ventilation--Fan Intake Grille Location Desired Outcome: Exhaust grille location optimizes either primary or local ventilation Note: 6.6002.3b - Local ventilation Desired Outcome: Exhaust grille location optimizes either primary or local ventilation Specification(s): Fan intake grille will be installed in the space where odor, moisture vapor, or other contaminants are generated Objective(s): Remove contaminated air at the source GA Wx Field Guide Georgia Environmental Finance Authority 370 of 486 February 06, 2019 Ventilation > Exhaust > Components 6.6002.4 - Ducts (Exhaust Fans) Desired Outcome: Installed ducts effectively move the required volume of air and prevent condensation Note: 6.6002.4a - Duct design and configuration Desired Outcome: Installed ducts effectively move the required volume of air and prevent condensation Specification(s): Consideration will be given to: Vent termination location Amount of space for duct run Roof condition, type, and access (e.g., metal, shingle, bow string, flat) Duct insulation When applicable, pitch duct to remove condensation to outdoors Ducts will be as straight as possible, fully extended, and have the shortest run possible Turns will be made so the radius at the centerline is no less than one duct diameter Duct diameter will be equal to or greater than the exhaust fan outlet Fan flow will be verified by flow measurement to meet ASHRAE Standard 62.2 Objective(s): Effectively move the required volume of air GA Wx Field Guide Georgia Environmental Finance Authority 371 of 486 February 06, 2019 Ventilation > Exhaust > Components 6.6002.4 - Ducts (Exhaust Fans) Desired Outcome: Installed ducts effectively move the required volume of air and prevent condensation Note: 6.6002.4b - Duct insulation Desired Outcome: Installed ducts effectively move the required volume of air and prevent condensation Specification(s): Ducts installed outside of the thermal envelope will be insulated to a minimum of R-8 or in accordance with local codes Objective(s): Prevent condensation from forming or collecting inside or outside of the ductwork GA Wx Field Guide Georgia Environmental Finance Authority 372 of 486 February 06, 2019 Ventilation > Exhaust > Components 6.6002.4 - Ducts (Exhaust Fans) Desired Outcome: Installed ducts effectively move the required volume of air and prevent condensation Note: 6.6002.4c - Duct support Desired Outcome: Installed ducts effectively move the required volume of air and prevent condensation Specification(s): Horizontal runs will be supported in accordance with flex duct manufacturer specifications and local codes Supports with a width of at least 1 " will be used or adequate metal support Objective(s): Effectively move the required volume of air Preserve the integrity of the duct system GA Wx Field Guide Georgia Environmental Finance Authority 373 of 486 February 06, 2019 Ventilation > Exhaust > Components 6.6002.4 - Ducts (Exhaust Fans) Desired Outcome: Installed ducts effectively move the required volume of air and prevent condensation Note: 6.6002.4d - Duct connections Desired Outcome: Installed ducts effectively move the required volume of air and prevent condensation Specification(s): Metal-to-metal or metal-to-PVC connections will be fastened with a minimum of three equally spaced screws Flexible duct-to-metal or flexible duct-to-PVC connections will be fastened with tie bands using a tie band tensioning tool PVC-to-PVC connections will be fastened with approved PVC cement Other specialized duct fittings will be fastened in accordance with manufacturer specifications In addition to mechanical fasteners, duct connections will be sealed with UL 181B or 181B-M listed material Objective(s): Effectively move the required volume of air Preserve the integrity of the duct system GA Wx Field Guide Georgia Environmental Finance Authority 374 of 486 February 06, 2019 Ventilation > Exhaust > Components 6.6002.4 - Ducts (Exhaust Fans) Desired Outcome: Installed ducts effectively move the required volume of air and prevent condensation Note: 6.6002.4e - Duct materials Desired Outcome: Installed ducts effectively move the required volume of air and prevent condensation Specification(s): Flexible materials will be UL 181 listed or Air Diffusion Council approved Rigid, smooth metal of 30-gauge wall thickness or thicker will be used PVC material may be used Objective(s): Effectively move the required volume of air Preserve the integrity of the duct system GA Wx Field Guide Georgia Environmental Finance Authority 375 of 486 February 06, 2019 Ventilation > Exhaust > Components 6.6002.4 - Ducts (Exhaust Fans) Desired Outcome: Installed ducts effectively move the required volume of air and prevent condensation Note: 6.6002.4f - Total exhaust airflow Desired Outcome: Installed ducts effectively move the required volume of air and prevent condensation Specification(s): Total exhaust system ventilation airflow will be measured Objective(s): Ensure air flow is as designed GA Wx Field Guide Georgia Environmental Finance Authority 376 of 486 February 06, 2019 Ventilation > Exhaust > Fans 6.6003.1 - Surface-Mounted Ducted Desired Outcome: Surface-mounted ducted fans installed to specification Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 6.6003.1a - Hole through interior surface Desired Outcome: Surface-mounted ducted fans installed to specification Specification(s): A hole no greater than a 1/4" greater than the assembly will be cut to accommodate fan assembly Objective(s): Minimize repair work Ensure a secure installation In Progress Determine size to cut hole by measuring fan assembly and ducting After A snug fit should be ensured to minimize weatherproofing required Tools: 1. Tape measure 2. Saw 3. Writing utensil GA Wx Field Guide Georgia Environmental Finance Authority 377 of 486 February 06, 2019 Ventilation > Exhaust > Fans 6.6003.1a - Hole through interior surface 1 2 Measure the termination fitting to Hole should be no more than 1/4" determine proper hole diameter (in this larger than assembly diameter case, 4") 3 Clear wall surface and mark hole size 1/4" larger than termination fitting 4 Since opening is larger than most hole saws, precision cutting is important GA Wx Field Guide Georgia Environmental Finance Authority 378 of 486 February 06, 2019 Ventilation > Exhaust > Fans 6.6003.1 - Surface-Mounted Ducted Desired Outcome: Surface-mounted ducted fans installed to specification Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 6.6003.1d - Backdraft damper Desired Outcome: Surface-mounted ducted fans installed to specification Specification(s): A backdraft damper will be installed between the outlet side of the fan and the exterior Objective(s): Prevent reverse air flow when the fan is off Best Practice Damper will be installed to maintain exterior air barrier GA Wx Field Guide Georgia Environmental Finance Authority 379 of 486 February 06, 2019 Ventilation > Exhaust > Fans 6.6003.1 - Surface-Mounted Ducted Desired Outcome: Surface-mounted ducted fans installed to specification Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 6.6003.1j - Combustion safety Desired Outcome: Surface-mounted ducted fans installed to specification Specification(s): Pressure effects will be assessed and corrected on all combustion appliances Objective(s): Ensure safe operation of combustion appliances GA Wx Field Guide Georgia Environmental Finance Authority 380 of 486 February 06, 2019 Ventilation > Exhaust > Fans 6.6003.2 - Inline Desired Outcome: Inline fans installed to specification Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 6.6003.2a - Wiring Desired Outcome: Inline fans installed to specification Specification(s): Wiring will be installed by a properly licensed contractor, as required by the authority having jurisdiction Wiring will be installed in accordance with original equipment manufacturer specifications, and local and national electrical and mechanical codes Objective(s): Prevent an electrical hazard GA Wx Field Guide Georgia Environmental Finance Authority 381 of 486 February 06, 2019 Ventilation > Exhaust > Fans 6.6003.2 - Inline Desired Outcome: Inline fans installed to specification Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 6.6003.2b - Access Desired Outcome: Inline fans installed to specification Specification(s): Fan and service switch will be accessible for maintenance according to NFPA 70 National Electric Code or local authority having jurisdiction Objective(s): Fan and service switch will be accessible for maintenance GA Wx Field Guide Georgia Environmental Finance Authority 382 of 486 February 06, 2019 Ventilation > Exhaust > Fans 6.6003.2 - Inline Desired Outcome: Inline fans installed to specification Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 6.6003.2c - Fan mounting Desired Outcome: Inline fans installed to specification Specification(s): Fan outlet will be oriented toward the final termination location Fan will be oriented so the equivalent length of the duct run is as short as possible Fan will be mounted securely in accordance with manufacturer specifications Fan will be isolated from the building framing unless specifically designed to be directly attached Fan will be installed remotely by installing ducting from intake grille Objective(s): Ensure short duct run to achieve optimum air flow Ensure fan is installed securely Ensure fan housing or building framing does not shake, rattle, or hum when operating Minimize noise GA Wx Field Guide Georgia Environmental Finance Authority 383 of 486 February 06, 2019 Ventilation > Exhaust > Fans 6.6003.2 - Inline Desired Outcome: Inline fans installed to specification Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 6.6003.2d - Backdraft damper Desired Outcome: Inline fans installed to specification Specification(s): A backdraft damper will be installed between the outlet side of the fan and the exterior Objective(s): Prevent reverse air flow when the fan is off GA Wx Field Guide Georgia Environmental Finance Authority 384 of 486 February 06, 2019 Ventilation > Exhaust > Fans 6.6003.2 - Inline Desired Outcome: Inline fans installed to specification Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 6.6003.2e - Duct connections Desired Outcome: Inline fans installed to specification Specification(s): Ducts will be connected and sealed to the intake fan and termination fitting as follows: Round metal-to-metal or metal-to-PVC connections will be fastened with a minimum of three equally spaced screws Other metal-to-metal or metal-to-PVC connections will be securely fastened and sealed with welds, gaskets, mastics (adhesives), mastic-plus-embedded-fabric systems or tapes Flexible duct-to-metal or flexible duct-to-PVC connections will be fastened with tie bands using a tie band tensioning tool PVC-to-PVC connections will be fastened with approved PVC cement Other specialized duct fittings will be fastened in accordance with manufacturer specifications In addition to mechanical fasteners, duct connections will be sealed with UL 181B or 181B-M listed material Objective(s): Exhaust from desired location to outside Preserve integrity of the duct system and building envelope GA Wx Field Guide Georgia Environmental Finance Authority 385 of 486 February 06, 2019 Ventilation > Exhaust > Fans 6.6003.2 - Inline Desired Outcome: Inline fans installed to specification Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 6.6003.2f - Boot to interior surface seal Desired Outcome: Inline fans installed to specification Specification(s): Sealants will be compatible with their intended surfaces Sealants will be continuous and meet fire barrier specifications Objective(s): Prevent air leakage around intake housing Prevent a fire hazard GA Wx Field Guide Georgia Environmental Finance Authority 386 of 486 February 06, 2019 Ventilation > Exhaust > Fans 6.6003.2 - Inline Desired Outcome: Inline fans installed to specification Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 6.6003.2g - Air flow Desired Outcome: Inline fans installed to specification Specification(s): Air flows in CFM will be measured and adjusted to meet the design requirements Objective(s): Exhaust sufficient air from desired locations to outside GA Wx Field Guide Georgia Environmental Finance Authority 387 of 486 February 06, 2019 Ventilation > Exhaust > Fans 6.6003.2 - Inline Desired Outcome: Inline fans installed to specification Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 6.6003.2h - Preventing air leakage caused by exhaust fans Desired Outcome: Inline fans installed to specification Specification(s): Leakage to the house from other spaces will be prevented (e.g., garages, unconditioned crawl spaces, unconditioned attics) Objective(s): Ensure occupant health and safety GA Wx Field Guide Georgia Environmental Finance Authority 388 of 486 February 06, 2019 Ventilation > Exhaust > Fans 6.6003.2 - Inline Desired Outcome: Inline fans installed to specification Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 6.6003.2i - Combustion safety Desired Outcome: Inline fans installed to specification Specification(s): Pressure effects caused by fans will be assessed and corrected when found outside of combustion safety standards Exhaust fans and other exhausting systems shall be provided with makeup air or other pressure relief Objective(s): Ensure safe operation of combustion appliances GA Wx Field Guide Georgia Environmental Finance Authority 389 of 486 February 06, 2019 Ventilation > Exhaust > Fans 6.6003.6 - Fan Placement (Whole House/Common Space Exhaust Only) Desired Outcome: Provide primary ventilation for common spaces Note: 6.6003.6a - Clearance Desired Outcome: Provide primary ventilation for common spaces Specification(s): Clearance for size of the fan recommended will be determined Consideration will be given for adequate head clearance Objective(s): Ensure access for installation, operation, and maintenance Ensure occupant safety GA Wx Field Guide Georgia Environmental Finance Authority 390 of 486 February 06, 2019 Ventilation > Exhaust > Fans 6.6003.6 - Fan Placement (Whole House/Common Space Exhaust Only) Desired Outcome: Provide primary ventilation for common spaces Note: 6.6003.6b - Power source Desired Outcome: Provide primary ventilation for common spaces Specification(s): Power source load will be determined as adequate Consideration will be given to power source location Objective(s): Provide accessible and adequate power source GA Wx Field Guide Georgia Environmental Finance Authority 391 of 486 February 06, 2019 Ventilation > Exhaust > Fans 6.6003.6 - Fan Placement (Whole House/Common Space Exhaust Only) Desired Outcome: Provide primary ventilation for common spaces Note: 6.6003.6c - Location Desired Outcome: Provide primary ventilation for common spaces Specification(s): No resistance greater than 3 pascals will exist between fan intake location with reference to the common area Objective(s): Allow fresh air distribution to common areas GA Wx Field Guide Georgia Environmental Finance Authority 392 of 486 February 06, 2019 Ventilation > Exhaust > Fans 6.6003.6 - Fan Placement (Whole House/Common Space Exhaust Only) Desired Outcome: Provide primary ventilation for common spaces Note: 6.6003.6d - Duct/vent Desired Outcome: Provide primary ventilation for common spaces Specification(s): Consideration will be given to: Vent termination location Amount of space for duct run Roof condition and type (e.g., metal, shingle, bow string, flat) Duct insulation When applicable, pitch duct to remove condensation to outdoors Ducts will be as straight as possible, fully extended, and have the shortest run possible To the extent possible, turns will be made so that the radius at the centerline is no less than one duct diameter Duct diameter will be equal to or greater than the exhaust fan outlet Fan flow will be verified by flow measurement to meet ASHRAE standard 62.2 Objective(s): Effectively move the required volume of air GA Wx Field Guide Georgia Environmental Finance Authority 393 of 486 February 06, 2019 Ventilation > Exhaust > Fans 6.6003.6 - Fan Placement (Whole House/Common Space Exhaust Only) Desired Outcome: Provide primary ventilation for common spaces Note: 6.6003.6e - Attachment Desired Outcome: Provide primary ventilation for common spaces Specification(s): Fan will be secured to a structural component Structural integrity of the manufactured home will be maintained (e.g., roof trusses, walls, floor joists) Objective(s): Maintain structural integrity Maintain fan attachment GA Wx Field Guide Georgia Environmental Finance Authority 394 of 486 February 06, 2019 Ventilation > Exhaust > Fans 6.6003.6 - Fan Placement (Whole House/Common Space Exhaust Only) Desired Outcome: Provide primary ventilation for common spaces Note: 6.6003.6f - Total exhaust airflow Desired Outcome: Provide primary ventilation for common spaces Specification(s): Total exhaust system airflow will be measured Objective(s): Ensure exhaust airflow is as designed GA Wx Field Guide Georgia Environmental Finance Authority 395 of 486 February 06, 2019 Ventilation > Exhaust > Appliance Exhaust Vents 6.6005.1 - Clothes Dryer Desired Outcome: Dryer air exhausted efficiently and safely 6.6005.1a - Clothes dryer ducting Desired Outcome: Dryer air exhausted efficiently and safely Specification(s): Clothes dryers will be ducted to the outdoors, which does not include unconditioned spaces, such as attics and crawl spaces that are ventilated with the outdoors As short a run as practical of rigid sheet metal or semi-rigid sheet metal venting material will be used in accordance with manufacturer specifications Dryer ducts exceeding 35' in duct equivalent length will have a dryer booster fan installed Plastic venting material will not be used Uninsulated clothes dryer duct will not pass through unconditioned spaces, such as attics and crawl spaces, except where allowed by the authority having jurisdiction Ducts will be connected and sealed as follows: UL-listed foil type or semi-rigid sheet metal to rigid metal will be fastened with clamp Other specialized duct fittings will be fastened in accordance with manufacturer specifications In addition to mechanical fasteners, duct connections will be sealed with UL 181B or 181B-M listed material In addition, Sheet metal screws or other fasteners that will obstruct the exhaust flow will not be used Condensing dryers will be plumbed to a drain Objective(s): Preserve integrity of building envelope GA Wx Field Guide Georgia Environmental Finance Authority 396 of 486 February 06, 2019 Ventilation > Exhaust > Appliance Exhaust Vents Effectively move air from clothes dryer to outside 6.6005.1a - Clothes dryer ducting GA Wx Field Guide Georgia Environmental Finance Authority 397 of 486 February 06, 2019 Ventilation > Exhaust > Appliance Exhaust Vents 6.6005.1 - Clothes Dryer Desired Outcome: Dryer air exhausted efficiently and safely 6.6005.1a - Clothes dryer ducting Desired Outcome: Dryer air exhausted efficiently and safely Specification(s): Clothes dryers will be ducted to the outdoors, which does not include unconditioned spaces such as attics and crawl spaces that are ventilated with the outdoors As short a run as practical of rigid sheet metal or semi-rigid sheet metal venting material will be used in accordance with manufacturer specifications Dryer ducts exceeding 35' in duct equivalent length will have a dryer booster fan installed Plastic venting material will not be used Uninsulated clothes dryer duct will not pass through unconditioned spaces such as attics and crawl spaces, except where allowed by the authority having jurisdiction Ducts will be connected and sealed as follows: UL listed foil type or semi-rigid sheet metal to rigid metal will be fastened with clamp Other specialized duct fittings will be fastened in accordance with manufacturer specifications In addition to mechanical fasteners, duct connections will be sealed with UL 181B or 181B-M listed material In addition: Sheet metal screws or other fasteners that will obstruct the exhaust flow will not be used Condensing dryers will be plumbed to a drain Objective(s): Preserve integrity of building envelope GA Wx Field Guide Georgia Environmental Finance Authority 398 of 486 February 06, 2019 Ventilation > Exhaust > Appliance Exhaust Vents Effectively move air from clothes dryer to outside 6.6005.1a - Clothes dryer ducting GA Wx Field Guide Georgia Environmental Finance Authority 399 of 486 February 06, 2019 Ventilation > Exhaust > Appliance Exhaust Vents 6.6005.1 - Clothes Dryer Desired Outcome: Dryer air exhausted efficiently and safely 6.6005.1b - Termination fitting Desired Outcome: Dryer air exhausted efficiently and safely Specification(s): Termination fitting manufactured for use with dryers will be installed A backdraft damper will be included, as described in termination fitting detail Objective(s): Preserve integrity of building envelope Effectively move air from clothes dryer to outside GA Wx Field Guide Georgia Environmental Finance Authority 400 of 486 February 06, 2019 Ventilation > Exhaust > Appliance Exhaust Vents 6.6005.1 - Clothes Dryer Desired Outcome: Dryer air exhausted efficiently and safely 6.6005.1c - Make-up air Desired Outcome: Dryer air exhausted efficiently and safely Specification(s): If natural draft combustion appliances are present and if worst-case CAZ and/or other performance based testing is conducted and indicates a need for make-up air, make-up air will be provided in accordance with the current version of ASHRAE 62.2 and in compliance with the authority having jurisdiction. If natural draft combustion appliances are present and if no performance based testing is conducted, make-up air will be provided prescriptively in accordance with the current version of ASHRAE 62.2 and in compliance with the authority having jurisdiction. Objective(s): Preserve integrity of building envelope Effectively move air from clothes dryer to outside GA Wx Field Guide Georgia Environmental Finance Authority 401 of 486 February 06, 2019 Ventilation > Exhaust > Appliance Exhaust Vents 6.6005.1 - Clothes Dryer Desired Outcome: Dryer air exhausted efficiently and safely 6.6005.1d - Combustion safety Desired Outcome: Dryer air exhausted efficiently and safely Specification(s): Pressure effects caused by fans will be assessed and corrected when found outside of combustion safety standards Objective(s): Ensure safe operation of combustion appliances Ensure occupant health and safety GA Wx Field Guide Georgia Environmental Finance Authority 402 of 486 February 06, 2019 Ventilation > Exhaust > Appliance Exhaust Vents 6.6005.1 - Clothes Dryer Desired Outcome: Dryer air exhausted efficiently and safely 6.6005.1e - Occupant education Desired Outcome: Dryer air exhausted efficiently and safely Specification(s): Occupant will be instructed to keep lint filter and termination fitting clean Occupant will be instructed to keep dryer booster fan clean, if present Occupant will be instructed on clothes dryer operation safety including information on items that must not be placed in the clothes dryer (items with any oil or other flammable liquid on it, foam, rubber, plastic or other heat-sensitive fabric, glass fiber materials) Objective(s): Effectively move air from clothes dryer to outside GA Wx Field Guide Georgia Environmental Finance Authority 403 of 486 February 06, 2019 Ventilation > Exhaust > Appliance Exhaust Vents 6.6005.2 - Kitchen Range Desired Outcome: Kitchen range fan installed to specification Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 6.6005.2b - Fan venting Desired Outcome: Kitchen range fan installed to specification Specification(s): Kitchen range fans will be vented to the outdoors Recirculating fans will not be used as a ventilating device Objective(s): Remove cooking contaminants from the house Preserve integrity of building envelope Before Recirculating fans over ranges do not actually remove contaminants After Daylight visible through dampered kitchen exhaust proves venting access GA Wx Field Guide Georgia Environmental Finance Authority 404 of 486 February 06, 2019 Ventilation > Exhaust > Appliance Exhaust Vents 6.6005.2 - Kitchen Range Desired Outcome: Kitchen range fan installed to specification Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 6.6005.2c - Fan ducting Desired Outcome: Kitchen range fan installed to specification Specification(s): Kitchen range fans will be ducted to the outdoors As short a run as practical of smooth wall metal duct will be used, following manufacturer specifications Ducting will be connected and sealed as follows: Metal-to-metal connections will be fastened with a minimum of three equally spaced screws Other metal-to-metal connections will be securely fastened and sealed with welds, gaskets, mastics (adhesives), mastic-plus-embedded-fabric systems, or tapes For down-draft exhaust systems, PVC-to-PVC connections will be fastened with approved PVC cement Other specialized duct fittings will be fastened in accordance with manufacturer specifications In addition to mechanical fasteners, duct connections will be sealed with UL 181B or 181B-M listed material Objective(s): Preserve integrity of building envelope Effectively move air from range to outside GA Wx Field Guide Georgia Environmental Finance Authority 405 of 486 February 06, 2019 Ventilation > Exhaust > Appliance Exhaust Vents 6.6005.2c - Fan ducting Before After Exhaust duct should be smooth-walled and in Daylight visible through dampered kitchen as short a run as possible exhaust proves outside access Tools: 1. Drill 2. Metal snips 3. Saw 4. Putty knife 5. Tape measure 6. Disposable brushes 7. Wire cutters 8. Scissors Materials: 1. Round metal ducting 2. Mastic 3. Fiberglass mesh tape 4. Fasteners 5. Galvanized wire to secure insulation onto ductwork 6. Nylon webbing for hanging ducts 7. UL-181 foil or Mylar tape to seal seams in insulation vapor barrier See also 6.6002.4d. Note: Only smooth-wall metal duct will be used, except for down-draft exhaust systems where PVC is acceptable as well. Flex duct is NOT acceptable for kitchen fan exhaust application. From the Manufactured Housing SWS 6.6002.4b.Duct Insulation: Ducts installed outside of the thermal envelope will be insulated to a minimum of R-8 or in accordance with local codes. 1 Duct run should be as smooth and short as possible 2 3 Duct should be fastened securely with Then joints should be secured with three evenly-spaced screws fiberglass tape GA Wx Field Guide Georgia Environmental Finance Authority 406 of 486 February 06, 2019 Ventilation > Exhaust > Appliance Exhaust Vents 6.6005.2c - Fan ducting 4 5 Coat joint with UL-181 mastic, at least Wrap duct with R-8 insulation. Seal 0.08" (2mm) thick seams in insulation vapor barrier with UL-181 listed foil or Mylar tape GA Wx Field Guide Georgia Environmental Finance Authority 407 of 486 February 06, 2019 Ventilation > Exhaust > Appliance Exhaust Vents 6.6005.2 - Kitchen Range Desired Outcome: Kitchen range fan installed to specification Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 6.6005.2e - Makeup air Desired Outcome: Kitchen range fan installed to specification Specification(s): Makeup air will be provided for kitchen range fans exhausting more than 200 CFM Objective(s): Ensure safe operation of combustion appliances Ensure occupant health and safety Before If kitchen exhaust is venting at more than 200 cfm, provide make-up air After A passive inlet vent can provide make-up air for kitchen exhaust Tools: 1. Drill 2. Hole saw 3. Caulk gun Materials: 1. Caulk sealant 2. Fasteners GA Wx Field Guide Georgia Environmental Finance Authority 408 of 486 February 06, 2019 Ventilation > Exhaust > Appliance Exhaust Vents 6.6005.2 - Kitchen Range Desired Outcome: Kitchen range fan installed to specification Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 6.6005.2f - Combustion safety Desired Outcome: Kitchen range fan installed to specification Specification(s): Pressure effects caused by fans will be assessed and corrected when found outside of combustion safety standards Objective(s): Ensure safe operation of combustion appliances Ensure occupant health and safety GA Wx Field Guide Georgia Environmental Finance Authority 409 of 486 February 06, 2019 Ventilation > Supply > Components 6.6102.4 - Intake for Ventilation Air to Forced Air System Used for Heating or Cooling Desired Outcome: Intake reduces pollutant entry, is easily maintained, has proper flow, and enhances house durability Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 6.6102.4a - Forced air system requirements Desired Outcome: Intake reduces pollutant entry, is easily maintained, has proper flow, and enhances house durability Specification(s): Existing forced air system leakage to the outside will be less than 10% of the air handler flow when measured at 25 pascals with reference to the outside Any portion of the return located inside the Combustion Appliance Zone will be air sealed Objective(s): Reduce migration of pollutants GA Wx Field Guide Georgia Environmental Finance Authority 410 of 486 February 06, 2019 Ventilation > Supply > Components 6.6102.4 - Intake for Ventilation Air to Forced Air System Used for Heating or Cooling Desired Outcome: Intake reduces pollutant entry, is easily maintained, has proper flow, and enhances house durability Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 6.6102.4b - Wiring Desired Outcome: Intake reduces pollutant entry, is easily maintained, has proper flow, and enhances house durability Specification(s): Wiring will be installed by a properly licensed contractor, as required by the authority having jurisdiction Wiring will be installed in accordance with original equipment manufacturer specifications, and local and national electrical and mechanical codes Objective(s): Prevent an electrical hazard GA Wx Field Guide Georgia Environmental Finance Authority 411 of 486 February 06, 2019 Ventilation > Supply > Components 6.6102.4 - Intake for Ventilation Air to Forced Air System Used for Heating or Cooling Desired Outcome: Intake reduces pollutant entry, is easily maintained, has proper flow, and enhances house durability Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 6.6102.4c - Access Desired Outcome: Intake reduces pollutant entry, is easily maintained, has proper flow, and enhances house durability Specification(s): Motorized damper and service switch will be accessible for maintenance in accordance with required code or authority having jurisdiction Objective(s): Ensure accessibility for maintenance GA Wx Field Guide Georgia Environmental Finance Authority 412 of 486 February 06, 2019 Ventilation > Supply > Components 6.6102.4 - Intake for Ventilation Air to Forced Air System Used for Heating or Cooling Desired Outcome: Intake reduces pollutant entry, is easily maintained, has proper flow, and enhances house durability Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 6.6102.4d - Mounting intake duct Desired Outcome: Intake reduces pollutant entry, is easily maintained, has proper flow, and enhances house durability Specification(s): Ventilation duct will be attached as close to the HVAC system's fan as possible while remaining in compliance with HVAC manufacturer specifications Filtration of ventilation air will be provided before reaching the thermal conditioning components Filtration will be accessible and serviceable Duct will be connected to intake fitting Connection and seal will be performed in accordance with supply duct detail Objective(s): Ensure short duct run to achieve optimum air flow Preserve integrity of the duct system and building envelope GA Wx Field Guide Georgia Environmental Finance Authority 413 of 486 February 06, 2019 Ventilation > Supply > Components 6.6102.4 - Intake for Ventilation Air to Forced Air System Used for Heating or Cooling Desired Outcome: Intake reduces pollutant entry, is easily maintained, has proper flow, and enhances house durability Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 6.6102.4e - Motorized damper Desired Outcome: Intake reduces pollutant entry, is easily maintained, has proper flow, and enhances house durability Specification(s): A motorized damper or equivalent technology will be installed between the intake fitting and the return side of the air handler Air flow will be provided by sequenced operation of the damper or equivalent technology Objective(s): Prevent air flow when none is desired GA Wx Field Guide Georgia Environmental Finance Authority 414 of 486 February 06, 2019 Ventilation > Supply > Components 6.6102.4 - Intake for Ventilation Air to Forced Air System Used for Heating or Cooling Desired Outcome: Intake reduces pollutant entry, is easily maintained, has proper flow, and enhances house durability Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 6.6102.4f - Intake filter Desired Outcome: Intake reduces pollutant entry, is easily maintained, has proper flow, and enhances house durability Specification(s): An accessible filter will be installed Filter will be able to remove contaminants consistent with at least minimum efficiency reporting value (MERV) 6 or better when tested in accordance with ANSI/ASHRAE 52.2 Filter or air cleaning systems that intentionally produce ozone will not be allowed Objective(s): Ensure occupant health and safety Preserve integrity of the building envelope GA Wx Field Guide Georgia Environmental Finance Authority 415 of 486 February 06, 2019 Ventilation > Supply > Components 6.6102.4 - Intake for Ventilation Air to Forced Air System Used for Heating or Cooling Desired Outcome: Intake reduces pollutant entry, is easily maintained, has proper flow, and enhances house durability Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 6.6102.4g - Occupant education Desired Outcome: Intake reduces pollutant entry, is easily maintained, has proper flow, and enhances house durability Specification(s): Occupant will be educated on how and when to change filter Objective(s): Ensure occupant health and safety Preserve integrity of the building envelope GA Wx Field Guide Georgia Environmental Finance Authority 416 of 486 February 06, 2019 Ventilation > Supply > Components 6.6102.4 - Intake for Ventilation Air to Forced Air System Used for Heating or Cooling Desired Outcome: Intake reduces pollutant entry, is easily maintained, has proper flow, and enhances house durability Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 6.6102.4h - Intake ventilation airflow Desired Outcome: Intake reduces pollutant entry, is easily maintained, has proper flow, and enhances house durability Specification(s): Total intake ventilation airflow will be measured Objective(s): Ensure airflow is as designed GA Wx Field Guide Georgia Environmental Finance Authority 417 of 486 February 06, 2019 Ventilation > Supply > Special Considerations 6.6188.2 - Removing Supply Vents from Garages Desired Outcome: Safe removal of garage supply vents Note: 6.6188.2g - CAZ testing Desired Outcome: Safe removal of garage supply vents Specification(s): CAZ testing will be performed where combustion appliances are utilized Objective(s): Identify possible conditions that can cause unsafe equipment operating conditions GA Wx Field Guide Georgia Environmental Finance Authority 418 of 486 February 06, 2019 Ventilation > Whole Building Ventilation > System Evaluation 6.6204.1 - Commissioning Ventilation Systems Desired Outcome: Verify proper operation of existing system,installed system air flow meets required standard and provides continuous ventilation for background pollutant sources 6.6204.1a - Identification Desired Outcome: Verify proper operation of existing system,installed system air flow meets required standard and provides continuous ventilation for background pollutant sources Specification(s): Identify whole building ventilation strategy that was installed in the home, based on options described in current version of ASHRAE 62.2, e.g., exhaust only, supply only, balanced, combining local and whole home ventilation delivery, incorporating infiltration credit, etc. Objective(s): Ensure suitable whole building ventilation strategy is installed Identify testing requirements to determine installed system air flow GA Wx Field Guide Georgia Environmental Finance Authority 419 of 486 February 06, 2019 Ventilation > Whole Building Ventilation > System Evaluation 6.6204.1 - Commissioning Ventilation Systems Desired Outcome: Verify proper operation of existing system,installed system air flow meets required standard and provides continuous ventilation for background pollutant sources 6.6204.1b - Equipment inspection Desired Outcome: Verify proper operation of existing system,installed system air flow meets required standard and provides continuous ventilation for background pollutant sources Specification(s): Visually inspect and document status of: Electrical connections Name plate (rated sone and flow) Motor cleanliness Objective(s): Evaluate equipment GA Wx Field Guide Georgia Environmental Finance Authority 420 of 486 February 06, 2019 Ventilation > Whole Building Ventilation > System Evaluation 6.6204.1 - Commissioning Ventilation Systems Desired Outcome: Verify proper operation of existing system,installed system air flow meets required standard and provides continuous ventilation for background pollutant sources 6.6204.1c - Pathway inspection Desired Outcome: Verify proper operation of existing system,installed system air flow meets required standard and provides continuous ventilation for background pollutant sources Specification(s): Visually inspect and document status of ducting or other airflow pathways to ensure proper: Conections (proper materials, sealed and connected) Insulation Support Sizing, and Termination locations and fittings Verify proper damper operation Objective(s): Preserve integrity of building envelope Effectively move air along selected pathways GA Wx Field Guide Georgia Environmental Finance Authority 421 of 486 February 06, 2019 Ventilation > Whole Building Ventilation > System Evaluation 6.6204.1 - Commissioning Ventilation Systems Desired Outcome: Verify proper operation of existing system,installed system air flow meets required standard and provides continuous ventilation for background pollutant sources 6.6204.1d - Measurement and Adjustment Desired Outcome: Verify proper operation of existing system,installed system air flow meets required standard and provides continuous ventilation for background pollutant sources Specification(s): Using a calibrated device, measure air flow of all necessary components, including building air leakage when relevant Adjust ventilation equipment air flows as necessary to meet the ventilation rates required by the current version of ASHRAE 62.2. Objective(s): Provide sufficient air flows per current ventilation standards Verify suitable performance of installed ventilation strategy GA Wx Field Guide Georgia Environmental Finance Authority 422 of 486 February 06, 2019 Ventilation > Whole Building Ventilation > System Evaluation 6.6204.1 - Commissioning Ventilation Systems Desired Outcome: Verify proper operation of existing system,installed system air flow meets required standard and provides continuous ventilation for background pollutant sources 6.6204.1e - Work order Desired Outcome: Verify proper operation of existing system,installed system air flow meets required standard and provides continuous ventilation for background pollutant sources Specification(s): Develop work order as necessary to correct deficiencies identified during inspections and measurement Objective(s): Correct deficiencies Ensure proper operation GA Wx Field Guide Georgia Environmental Finance Authority 423 of 486 February 06, 2019 Ventilation > Whole Building Ventilation > System Evaluation 6.6204.1 - Commissioning Ventilation Systems Desired Outcome: Verify proper operation of existing system,installed system air flow meets required standard and provides continuous ventilation for background pollutant sources 6.6204.1f - Occupant education Desired Outcome: Verify proper operation of existing system,installed system air flow meets required standard and provides continuous ventilation for background pollutant sources Specification(s): Instruct occupant on purpose, use and maintenance of ventilation, and typical signs that ventilation is needed, e.g., condensation on windows Objective(s): Occupant understands benefits of good indoor air quality and can operate ventilation equipment as needed GA Wx Field Guide Georgia Environmental Finance Authority 424 of 486 February 06, 2019 Ventilation > Whole Building Ventilation > Exhaust-Only System 6.6205.1 - Manufactured Housing Exhaust-Only Strategies Desired Outcome: Provide primary ventilation for common spaces 6.6205.1e - Combustion Appliance Zone (CAZ) testing Desired Outcome: Provide primary ventilation for common spaces Specification(s): CAZ test will be performed where combustion appliances are utilized, where applicable Objective(s): Identify possible conditions that can cause unsafe equipment operating conditions GA Wx Field Guide Georgia Environmental Finance Authority 425 of 486 February 06, 2019 Ventilation > Whole Building Ventilation > Equipment Removal 6.6206.1 - Decommissioning Existing Exhaust or Supply Ventilation Systems Desired Outcome: Safely and properly eliminate fan Note: 6.6206.1d - Combustion Appliance Zone (CAZ) testing Desired Outcome: Safely and properly eliminate fan Specification(s): Combustion safety test will be performed where combustion appliances are utilized Objective(s): Identify possible conditions that can cause unsafe equipment operating conditions GA Wx Field Guide Georgia Environmental Finance Authority 426 of 486 February 06, 2019 Ventilation > Whole Building Ventilation > Special Considerations 6.6288.2 - Sound Ratings--New Fan Installation Desired Outcome: Systems operate as quietly as possible Note: 6.6288.2a - Primary ventilation system/continuously operating fan Desired Outcome: Systems operate as quietly as possible Specification(s): System will be rated at a sound no greater than 1.0 sone Objective(s): Minimize noise Maximize fan use GA Wx Field Guide Georgia Environmental Finance Authority 427 of 486 February 06, 2019 Ventilation > Whole Building Ventilation > Special Considerations 6.6288.2 - Sound Ratings--New Fan Installation Desired Outcome: Systems operate as quietly as possible Note: 6.6288.2b - Intermittent spot ventilation system Desired Outcome: Systems operate as quietly as possible Specification(s): Spot ventilation (local mechanical exhaust systems operated as needed by the occupant; e.g., range hood, bath fans) will be rated at a sound no greater than 3.0 sone Objective(s): Minimize noise Maximize fan use GA Wx Field Guide Georgia Environmental Finance Authority 428 of 486 February 06, 2019 Ventilation > Additional Resources > Codes and Standards Resources 6.9901.1 - Supplemental Ventilation Information--ASHRAE 62.2 Desired Outcome: To provide supplemental ventilation information--ASHRAE 62.2 6.9901.1a - Ventilation fan flow rate Desired Outcome: To provide supplemental ventilation information--ASHRAE 62.2 Specification(s): ASHRAE Standard 62.2 and the calculation of the infiltration credit allow adjustments to primary ventilation fan flow rates for existing houses using a single fan. Objective(s): To provide supplemental ventilation information--ASHRAE 62.2 GA Wx Field Guide Georgia Environmental Finance Authority 429 of 486 February 06, 2019 Baseload > Plug Load > Refrigerators/Freezers 7.8001.1 - Refrigerator and Freezer Replacement Desired Outcome: A more energy efficient appliance installed 7.8001.1a - Selection Desired Outcome: A more energy efficient appliance installed Specification(s): Appliance shall be ENERGY STAR qualified or at least as energy efficient Appliance will fit in the available space without blocking access to light switches, cabinets, etc. Appliance will carry a minimum one-year warranty that will provide a replacement appliance if repeated issues relating to health, safety, or performance occur Objective(s): Ensure occupant satisfaction with appliance GA Wx Field Guide Georgia Environmental Finance Authority 430 of 486 February 06, 2019 Baseload > Plug Load > Refrigerators/Freezers 7.8001.1 - Refrigerator and Freezer Replacement Desired Outcome: A more energy efficient appliance installed 7.8001.1b - Installation Desired Outcome: A more energy efficient appliance installed Specification(s): Appliance will be installed in accordance with manufacturer specifications and local codes Any penetrations to the exterior of the home created by the installation of the appliance will be sealed Energy-related appliance controls will be demonstrated to the occupant Specific information on the proper maintenance of the equipment will be provided to the occupant Warranty information, operation manuals, and installer contact information will be provided to the occupant Objective(s): Achieve intended appliance function Preserve food at low energy use Educate occupant on how to operate and maintain the appliance GA Wx Field Guide Georgia Environmental Finance Authority 431 of 486 February 06, 2019 Baseload > Plug Load > Refrigerators/Freezers 7.8001.1 - Refrigerator and Freezer Replacement Desired Outcome: A more energy efficient appliance installed 7.8001.1c - Decommissioning Desired Outcome: A more energy efficient appliance installed Specification(s): Appliances replaced by new units will be recycled or disposed of in accordance with federal, state, or local regulations Appliances infested with pests will be enclosed before moving Objective(s): Prevent reuse of inefficient equipment and components Protect the environment Protect worker safety GA Wx Field Guide Georgia Environmental Finance Authority 432 of 486 February 06, 2019 Baseload > Plug Load > Refrigerators/Freezers 7.8001.2 - Cleaning and Tuning Existing Refrigerators and Freezers Desired Outcome: Energy used for food preservation reduced 7.8001.2a - Clean and tune Desired Outcome: Energy used for food preservation reduced Specification(s): Dirty or clogged coils will be cleaned Air flow to the coils will be provided in accordance with manufacturer specifications Appliance will be located away from heat sources (e.g., supply registers, direct sunlight) if possible Interior temperatures will be measured, and the appliance must maintain: Freezer temperature at 0 Fresh food at 35-40 Specific information about the proper maintenance of the equipment will be provided to the occupant Condensation control switch will be left in the appropriate position, given occupant preference and moisture load in the house Objective(s): Reduce energy use Improve performance Educate occupant on how to operate and maintain the appliance GA Wx Field Guide Georgia Environmental Finance Authority 433 of 486 February 06, 2019 Baseload > Plug Load > Lighting 7.8003.1 - Lighting Upgrade Desired Outcome: Energy used for lighting reduced while maintaining adequate and safe lighting levels 7.8003.1b - Selection Desired Outcome: Energy used for lighting reduced while maintaining adequate and safe lighting levels Specification(s): All bulbs, fixtures, and controls will be appropriate for the intended application (e.g., enclosed, orientation, dimmable, potential for breakage, indoor and outdoor) All bulbs, fixtures, and controls will be selected to provide the brightness and light quality required in that application (e.g., task lighting, trip-and- fall hazards, nightlights) Selected equipment should have the highest level of efficiency within a technology [e.g., compact fluorescent lamp (CFL), LED] All bulbs, fixtures, and controls will be ENERGY STAR rated where applicable When possible, bulbs, fixtures, and controls will be selected that will facilitate the use of future lighting technologies (e.g., LEDs) When incandescent bulbs cannot be replaced or when occupant chooses not to replace, a dimmer will be selected Light/lamp wattage should not exceed rated wattage of fixture Bulb replacements will be chosen based on expected durability, light quality, and lifetime energy use of the bulb Controls to turn off lights when not needed (e.g., no one in room) will be provided All bulbs, fixtures, and controls will be UL-approved and installed in accordance with local code(s) and NFPA 70 National Electric Code Fluorescent light ballasts containing polychlorinated biphenyls (PCBs) will be replaced in accordance with the EPA's Healthy Indoor Environment Protocols for Home Energy Upgrades GA Wx Field Guide Georgia Environmental Finance Authority 434 of 486 February 06, 2019 Baseload > Plug Load > Lighting 7.8003.1b - Selection Objective(s): Provide improved lighting quality at lower energy use Select equipment that will not be an unnecessary barrier to future technologies Avoid inferior products and unsatisfied occupants GA Wx Field Guide Georgia Environmental Finance Authority 435 of 486 February 06, 2019 Baseload > Water Heating > Water Use Reduction 7.8101.1 - Shower Head and Faucet Aerator Desired Outcome: Energy and water use reduced while occupant needs for water flow maintained Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 7.8101.1b - Selection Desired Outcome: Energy and water use reduced while occupant needs for water flow maintained Specification(s): The rated flow of new shower heads will be 2.5 gallons per minute (GPM) or less If multiple heads are provided, the total flow rate will not exceed 2.5 GPM Aerator flow rate will be 2.2 GPM or less All work shall be completed by a licensed plumbing professional where required by the authority having jurisdiction and installed to industry-accepted standards Objective(s): Reduce water and energy consumption Ensure occupant satisfaction GA Wx Field Guide Georgia Environmental Finance Authority 436 of 486 February 06, 2019 Baseload > Water Heating > Water Use Reduction 7.8101.1 - Shower Head and Faucet Aerator Desired Outcome: Energy and water use reduced while occupant needs for water flow maintained Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 7.8101.1c - Installation Desired Outcome: Energy and water use reduced while occupant needs for water flow maintained Specification(s): Equipment will be installed in accordance with manufacturer specifications and meet all applicable building codes Water quality will be evaluated for debris that may clog the equipment Once installed, high-efficiency shower heads or faucet aerators will be tested to determine if equipment is tightened adequately to prevent leakage at the point of connection If needed, shower diverter will be repaired or replaced Any penetrations to the exterior of the home created by the installation of the equipment will be sealed Any damage done to the house during installation will be repaired Specific information about proper maintenance of the equipment will be provided to the occupant Warranty information, operation manuals, and installer contact information will be provided to the occupant Water flow that satisfies the occupant will be provided by all shower heads and faucet aerators Occupant's acceptance of the shower head and/or aerator will be documented Objective(s): Reduce water and energy consumption GA Wx Field Guide Georgia Environmental Finance Authority 437 of 486 February 06, 2019 Baseload > Water Heating > Water Use Reduction Ensure occupant satisfaction with water flow Eliminate water leakage Prevent water damage 7.8101.1c - Installation Before Old, high flow shower nozzle After Leak testing a new shower aerator Tools: 1. Tongue-and-groove pliers 2. Pipe wrench 3. Adjustable wrench Materials: 1. Joint sealing tape 2. Rags Interview occupant to document and verify their satisfaction with new shower and faucet aerators. Operate equipment after installation to ensure that it does not leak. 1 2 Remove old, high flow shower heads Replace with 2.5 gpm maximum shower heads 3 Clean corrosion and old sealant from the threads on the shower nipple using a wire brush GA Wx Field Guide Georgia Environmental Finance Authority 438 of 486 February 06, 2019 Baseload > Water Heating > Water Use Reduction 7.8101.1c - Installation 4 5 6 Seal the threads on the shower nipple with two wraps of Teflon tape. Wrap tape clockwise so it won't peel off Install the new low-flow shower head Tighten the shower head using an adjustable wrench or tongue-andgroove pliers and a rag to protect the finish. 7 8 Turn on the water and check for leaks Make sure the client is happy with their new low-flow shower head. Document approval with their signature in the file GA Wx Field Guide Georgia Environmental Finance Authority 439 of 486 February 06, 2019 Baseload > Water Heating > Water Use Reduction 7.8101.1 - Shower Head and Faucet Aerator Desired Outcome: Energy and water use reduced while occupant needs for water flow maintained Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 7.8101.1d - Decommissioning Desired Outcome: Energy and water use reduced while occupant needs for water flow maintained Specification(s): Replaced shower heads and faucet aerators will be recycled or disposed of properly Objective(s): Prevent the reuse of inefficient equipment and components Recycle or dispose of removed shower faucets and sink aerators to prevent their reuse. GA Wx Field Guide Georgia Environmental Finance Authority 440 of 486 February 06, 2019 Baseload > Water Heating > Installation and Replacement 7.8102.1 - Water Heater Selection Desired Outcome: Safe, reliable, and efficient hot water source selected that meets occupant needs at lowest possible cost of ownership and operation 7.8102.1a - Selection parameters Desired Outcome: Safe, reliable, and efficient hot water source selected that meets occupant needs at lowest possible cost of ownership and operation Specification(s): Equipment will provide sufficient, affordable, safe, and healthy hot water for the occupant in accordance with IRC Potential for solar hot water heating or other renewable energy systems will be assessed in selecting the hot water equipment Potential for health and safety hazards (e.g., back drafting, flame rollout, obstructions) will be assessed in selecting equipment, and the cost of remedying such problems will be included in any cost and benefit calculations If a combustion-based system is selected, it will be either direct vented or power vented, and ENERGY STAR qualified or an Energy Factor (EF) of 0.58 or higher If combustion equipment is selected, a low nitrogen oxide burner will be included Equipment will be functional at high efficiency under all load conditions Standby losses will be reduced to maximum potential Fuel type will be selected based on affordability to occupant Equipment will be freeze resistant or installed in a conditioned space Efficiency of equipment will be maintained throughout life of system Occupant control of hot water temperature will be provided on the equipment The following will be determined from the occupant: GA Wx Field Guide Georgia Environmental Finance Authority 441 of 486 February 06, 2019 Baseload > Water Heating > Installation and Replacement 7.8102.1a - Selection parameters Lifestyle Current and future needs Space considerations Fuel options Health and safety considerations Appliance options Maintenance and operation cost Return on investment concerns Objective(s): Save energy and water Protect the environment Identify appliance options based on the needs and wants of the occupant GA Wx Field Guide Georgia Environmental Finance Authority 442 of 486 February 06, 2019 Baseload > Water Heating > Installation and Replacement 7.8102.1 - Water Heater Selection Desired Outcome: Safe, reliable, and efficient hot water source selected that meets occupant needs at lowest possible cost of ownership and operation 7.8102.1b - Product selection Desired Outcome: Safe, reliable, and efficient hot water source selected that meets occupant needs at lowest possible cost of ownership and operation Specification(s): Water heater will be selected based on performance requirements of the occupant, available fuel sources, energy efficiency, and total life cycle cost In very cold climates, on-demand water heaters will be sized to meet the demand of water flow at very low water intake temperatures When evaluating an existing thermal solar water heating system, a solar expert should be consulted The proper installation and maintenance of solar hot water systems is provided in the Uniform Solar Energy Code (USEC) and IRC Objective(s): Ensure equipment meets the occupant's expectations while providing efficient energy and water use GA Wx Field Guide Georgia Environmental Finance Authority 443 of 486 February 06, 2019 Baseload > Water Heating > Installation and Replacement 7.8102.2 - Storage-Type Appliance Desired Outcome: Safe and reliable hot water source provided that meets occupant needs at lowest possible cost of ownership Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 7.8102.2e - Expansion tank Desired Outcome: Safe and reliable hot water source provided that meets occupant needs at lowest possible cost of ownership Specification(s): Expansion tanks will be installed where required and in accordance with the AHJ Objective(s): Protect the storage tank from expansion Bad Practice Need to eliminate the valves between the storage tank and expansion tank Best Practice Expansion tank is installed on the cold water supply side Appropriate licensing for installer required. Expansion tanks are only required to be installed only when in conjunction with new and replacement water heaters. GA Wx Field Guide Georgia Environmental Finance Authority 444 of 486 February 06, 2019 Baseload > Water Heating > Installation and Replacement 7.8102.2 - Storage-Type Appliance Desired Outcome: Safe and reliable hot water source provided that meets occupant needs at lowest possible cost of ownership Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 7.8102.2f - Temperature and pressure relief valve Desired Outcome: Safe and reliable hot water source provided that meets occupant needs at lowest possible cost of ownership Specification(s): Correct temperature and pressure relief valve will be installed in compliance with IRC and according to manufacturer specifications Temperature and pressure relief valve discharge tube will be installed in accordance with IRC Objective(s): Discharge excessive energy (pressure or temperature) from storage tank to safe location Before After Water heaters should be not capped of at t&p T&P discharge should be piped to a safe and valve observable location Tools: 1. Pipe wrench 2. Hacksaw Materials: 1. PVC 2. Plumber's epoxy GA Wx Field Guide Georgia Environmental Finance Authority 445 of 486 February 06, 2019 Baseload > Water Heating > Installation and Replacement 7.8102.2f - Temperature and pressure relief valve Check local jurisdictional codes. Paraphrased from 2012 IRC P2803.6.1: Temperature and pressure relief valve discharge pipes should not be connected to drainage system. T&P discharge pipes should be a clean line without valve or tee, flowing with gravity to an observable and safe location that cannot cause personal injury or structural damage -- the floor, an existing drain pan, a waste receptor, or to the outdoors. Pipe should not terminate more than 6" from floor, pan or waste receptor. GOOD: T&P discharge should be piped within 6" of the floor or to outdoors BAD: T&P discharge should flow with BAD: T&P discharge should not be gravity and be observable piped into drainage system GA Wx Field Guide Georgia Environmental Finance Authority 446 of 486 February 06, 2019 Baseload > Water Heating > Installation and Replacement 7.8102.2 - Storage-Type Appliance Desired Outcome: Safe and reliable hot water source provided that meets occupant needs at lowest possible cost of ownership Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 7.8102.2k - Discharge temperature Desired Outcome: Safe and reliable hot water source provided that meets occupant needs at lowest possible cost of ownership Specification(s): Discharge temperature will be set not to exceed 120 or as prescribed by local code Objective(s): Ensure safe hot water supply temperature to fixtures Unsafe Tools: 1. Thermometer Safe Water heaters should produce water under 120 degrees to prevent scalding GA Wx Field Guide Georgia Environmental Finance Authority 447 of 486 February 06, 2019 Baseload > Water Heating > Installation and Replacement 7.8102.2k - Discharge temperature 1 Test temperature of hot water at faucets in house 2 Hot water temperatures should not exceed 120 degrees Fahrenheit 3 Adjust water heater settings and insulate as needed 4 After adjustment and insulation, retest to verify temp is under 120 degrees GA Wx Field Guide Georgia Environmental Finance Authority 448 of 486 February 06, 2019 Baseload > Water Heating > Installation and Replacement 7.8102.3 - On-Demand Appliance Desired Outcome: Safe and reliable hot water source provided that meets occupant needs at lowest possible cost of ownership Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 7.8102.3e - Temperature and pressure relief valve Desired Outcome: Safe and reliable hot water source provided that meets occupant needs at lowest possible cost of ownership Specification(s): Correct temperature and pressure relief valve will be installed in compliance with IRC and according to manufacturer specifications Temperature and pressure relief valve discharge tube will be installed in accordance with IRC Objective(s): Discharge excessive energy (pressure or temperature) from storage tank to safe location Before After Water heaters should be not capped of at t&p T&P discharge should be piped to a safe and valve observable location Tools: 1. Pipe wrench 2. Hacksaw Materials: 1. PVC 2. Plumber's epoxy GA Wx Field Guide Georgia Environmental Finance Authority 449 of 486 February 06, 2019 Baseload > Water Heating > Installation and Replacement 7.8102.3e - Temperature and pressure relief valve Check local jurisdictional codes. Paraphrased from 2012 IRC P2803.6.1: Temperature and pressure relief valve discharge pipes should not be connected to drainage system. T&P discharge pipes should be a clean line without valve or tee, flowing with gravity to an observable and safe location that cannot cause personal injury or structural damage -- the floor, an existing drain pan, a waste receptor, or to the outdoors. Pipe should not terminate more than 6" from floor, pan or waste receptor. GOOD: T&P discharge should be piped within 6" of the floor or to outdoors BAD: T&P discharge should flow with BAD: T&P discharge should not be gravity and be observable piped into drainage system GA Wx Field Guide Georgia Environmental Finance Authority 450 of 486 February 06, 2019 Baseload > Water Heating > Installation and Replacement 7.8102.3 - On-Demand Appliance Desired Outcome: Safe and reliable hot water source provided that meets occupant needs at lowest possible cost of ownership Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 7.8102.3h - Thermal efficiency Desired Outcome: Safe and reliable hot water source provided that meets occupant needs at lowest possible cost of ownership Specification(s): Any accessible hot water lines at the appliance will be insulated to meet IRC or local requirements, whichever is greater Objective(s): Reduce line losses After Insulate accessible pipes to R-3 or better Materials: 1. Foam pipe insulation 2. Spray adhesive 3. Zip ties Hot water pipe insulation requirements are found in Chapter 11 of the International Residential Code, Section N1103.4.2 (R403.4.2). The code calls for a minimum of R-3. As a best practice, R-4 and R-5 GA Wx Field Guide Georgia Environmental Finance Authority 451 of 486 February 06, 2019 Baseload > Water Heating > Installation and Replacement 7.8102.3h - Thermal efficiency pipe insulation is available through mechanical and industrial suppliers. Maintain proper clearances from the water heater vent when installing foam pipe insulation. GA Wx Field Guide Georgia Environmental Finance Authority 452 of 486 February 06, 2019 Baseload > Water Heating > Installation and Replacement 7.8102.3 - On-Demand Appliance Desired Outcome: Safe and reliable hot water source provided that meets occupant needs at lowest possible cost of ownership Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 7.8102.3i - Required combustion air Desired Outcome: Safe and reliable hot water source provided that meets occupant needs at lowest possible cost of ownership Specification(s): Recommendations will be made to install all on-demand appliances as sealed combustion If not possible: Combustion and ventilation (excess air) requirements of gas-fired appliances, including provision of outside and inside air to account for building tightness, will be provided The minimum required volume shall be 50 cubic feet per 1,000 Btu/h in accordance with IRC If needed, additional combustion air will be provided in accordance with IRC Objective(s): Ensure adequate combustion air for operation of the appliance GA Wx Field Guide Georgia Environmental Finance Authority 453 of 486 February 06, 2019 Baseload > Water Heating > Installation and Replacement 7.8102.3i - Required combustion air Best Practice Best practice is to install on-demand water heaters as direct-vent units If not installed as direct vent, refer to notes and images on next page for required combustion air To determine adequate combustion air: add up the input Btus of all combustion appliances in the space and divide by 20. The result is the minimum required air volume in cubic feet (50 cubic feet per 1,000 input Btus). If the available volume is less than 50 cubic feet per 1,000 input Btus, provide additional combustion air as listed below for each circumstance, in accordance with the 2012 IRC G2407. Image 1: For homes with one permanent opening, see 2012 IRC: G2407.6.2 (304.6.2): a minimum free area of 1 square inch per 3,000 Btu/h (734 mm2/kW) of total input rating of all appliances Image 2: For homes with two permanent vertical duct openings, see 2012 IRC G2407.6.1 (304.6.1): a minimum free area of 1 square inch per 4,000 Btu/h (550 mm2/kW) of total input rating of all appliances Image 3: For homes with two permanent horiztonal duct openings, see 2012 IRC G2407.6.1 (304.6.1): a minimum free area of 1 square inch per 2,000 Btu/h (1,100 mm2/kW) of total input rating of all appliances 1 2 Minimum free area of 1 square inch Minimum free area of 1 square inch per 3,000 Btu/h (734 mm2/kW) of total per 4,000 Btu/h (550 mm2/kW) of input rating total input rating 3 Minimum free area of 1 square inch per 2,000 Btu/h (1100 mm2/kW) of total input rating GA Wx Field Guide Georgia Environmental Finance Authority 454 of 486 February 06, 2019 Baseload > Water Heating > Installation and Replacement 7.8102.3 - On-Demand Appliance Desired Outcome: Safe and reliable hot water source provided that meets occupant needs at lowest possible cost of ownership Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 7.8102.3j - Venting of flue gases Desired Outcome: Safe and reliable hot water source provided that meets occupant needs at lowest possible cost of ownership Specification(s): Combustion byproducts will be removed in accordance with IRC and manufacturer specifications Objective(s): Ensure the safety and durability of the venting system Safe On-demand water heater combustion air intake and exhaust vent, interior view Safe On-demand water heater combustion air intake and exhaust vent Follow manufacturer's venting instructions for on-demand appliances. Local codes may be more stringent than the International Residential Code (Section G2407), which governs venting of gas appliances, Do not locate vent terminals near dryer vents. GA Wx Field Guide Georgia Environmental Finance Authority 455 of 486 February 06, 2019 Baseload > Water Heating > Installation and Replacement 7.8102.3j - Venting of flue gases Leave 12" between a vent terminal and any non-mechanical building vent or combustion air inlet from another appliance Leave 12" between vent terminals and any operable door or window Allow 12" clearance from the edge of a vent to any inside corner of the building Allow 12" between any two vent terminals Install vent terminal at least 3 feet higher than any mechanical air inlet that is closer than 10 feet away horizontally Leave 60" between terminals that are in line vertically Install vent terminals at least 36" below Install vent at least 36" above grade, any eave, soffit, porch, or deck within porch, deck, veranda, or snow line 24 horizontal inches of center of vent GA Wx Field Guide Georgia Environmental Finance Authority 456 of 486 February 06, 2019 Baseload > Water Heating > Installation and Replacement 7.8102.3 - On-Demand Appliance Desired Outcome: Safe and reliable hot water source provided that meets occupant needs at lowest possible cost of ownership Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 7.8102.3k - Flue gas testing Desired Outcome: Safe and reliable hot water source provided that meets occupant needs at lowest possible cost of ownership Specification(s): Undiluted flue gases will be checked with a calibrated combustion analyzer in accordance with BPI-1100-T If combustion is not in compliance with BPI-1100-T, diagnostics and adjustments will be done to manufacturer specifications or local codes Objective(s): Confirm that combustion is occurring safely with maximum efficiency In Progress Tools: 1. Properly calibrated combustion analyzer GA Wx Field Guide Georgia Environmental Finance Authority 457 of 486 February 06, 2019 Baseload > Water Heating > Installation and Replacement 7.8102.3k - Flue gas testing The combustion analyzer shall be calibrated in accordance with the manufacturer's recommendations with available documentation traceable to the individual device. 1 Verify that calibration date is current on combustion analyzer 2 3 Test flue gases for carbon monoxide Verify that carbon monoxide levels are at outlet of vent within specifications GA Wx Field Guide Georgia Environmental Finance Authority 458 of 486 February 06, 2019 Baseload > Water Heating > Installation and Replacement 7.8102.3 - On-Demand Appliance Desired Outcome: Safe and reliable hot water source provided that meets occupant needs at lowest possible cost of ownership Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 7.8102.3n - Discharge temperature Desired Outcome: Safe and reliable hot water source provided that meets occupant needs at lowest possible cost of ownership Specification(s): Discharge temperature will be set in accordance with manufacturer instructions and in compliance with local codes Use extreme caution when temperature setting is above 120F Objective(s): Ensure safe hot water supply temperature to fixtures Unsafe Hot water temperature over 120F Safe Hot water temperature under 120F Tools: 1. Thermometer 2. Cup or bowl Use a thermometer to measure hot water temperature. 120F is the recommended setting GA Wx Field Guide Georgia Environmental Finance Authority 459 of 486 February 06, 2019 Baseload > Water Heating > Installation and Replacement 7.8102.3n - Discharge temperature GA Wx Field Guide Georgia Environmental Finance Authority 460 of 486 February 06, 2019 Baseload > Water Heating > Installation and Replacement 7.8102.3 - On-Demand Appliance Desired Outcome: Safe and reliable hot water source provided that meets occupant needs at lowest possible cost of ownership Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 7.8102.3n - Discharge temperature Desired Outcome: Safe and reliable hot water source provided that meets occupant needs at lowest possible cost of ownership Specification(s): Discharge temperature will be set in accordance with manufacturer instructions and in compliance with local codes Use extreme caution when temperature setting is above 120F Objective(s): Ensure safe hot water supply temperature to fixtures Unsafe Hot water temperature over 120F Safe Hot water temperature under 120F Tools: 1. Thermometer 2. Cup or bowl Use a thermometer to measure hot water temperature. 120F is the recommended setting GA Wx Field Guide Georgia Environmental Finance Authority 461 of 486 February 06, 2019 Baseload > Water Heating > Installation and Replacement 7.8102.3n - Discharge temperature GA Wx Field Guide Georgia Environmental Finance Authority 462 of 486 February 06, 2019 Baseload > Water Heating > Installation and Replacement 7.8102.3 - On-Demand Appliance Desired Outcome: Safe and reliable hot water source provided that meets occupant needs at lowest possible cost of ownership Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 7.8102.3p - Ambient CO Desired Outcome: Safe and reliable hot water source provided that meets occupant needs at lowest possible cost of ownership Specification(s): All homes with combustion appliances or an attached garage will have a carbon monoxide (CO) alarm Objective(s): Ensure occupant health and safety GA Wx Field Guide Georgia Environmental Finance Authority 463 of 486 February 06, 2019 Baseload > Water Heating > Maintenance/Inspection 7.8103.1 - Storage-Type Appliance Desired Outcome: Safe, reliable, and efficient operation of the appliance maintained Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 7.8103.1a - Health and safety Desired Outcome: Safe, reliable, and efficient operation of the appliance maintained Specification(s): Combustion safety testing will be performed in accordance with the Health and Safety Chapter of the Standard Work Specifications for Single-Family Housing or other equivalent practice Electrical components will be verified to comply with NEC (e.g., no electrical box connector, no disconnect, improperly sized breaker and wire) Objective(s): Identify potential health and safety issues Before Complete combustion safety testing to ensure healthy, safe work environment After When completed work, retest to verify home is still healthy and safe GA Wx Field Guide Georgia Environmental Finance Authority 464 of 486 February 06, 2019 Baseload > Water Heating > Maintenance/Inspection 7.8103.1a - Health and safety Tools: 1. Personal CO monitor 2. Combustion analyzer with probe 3. Manometer 4. Smoke pencil 5. Mirror 6. Stopwatch, timer, or watch with second hand Materials: 1. CO alarm 2. Fasteners See also SWS 2.0201.2a-2.0299.1i for all Combustion Safety details and SWS 2.0602.2c for Electrical Safety. GA Wx Field Guide Georgia Environmental Finance Authority 465 of 486 February 06, 2019 Baseload > Water Heating > Maintenance/Inspection 7.8103.1 - Storage-Type Appliance Desired Outcome: Safe, reliable, and efficient operation of the appliance maintained Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 7.8103.1b - Visual inspection Desired Outcome: Safe, reliable, and efficient operation of the appliance maintained Specification(s): Inspection will be conducted to show compliance with the IRC, including but not limited to: Water or fuel leaks Damaged wiring Venting issues with draft and condensation (e.g., soot, rusting of flue pipe, burned paint or wires, efflorescence) Corrosion (e.g., rust, mineral deposits) General condition of components Objective(s): Determine needed repairs or maintenance In Progress Inspect for rust, corrosion, and dust around draft diverter. Verify diverter is centered and fastened. Check T&P valve In Progress Inspect for signs of flame rollout, thermostat and gas valve condition, and proper T&P relief valve termination GA Wx Field Guide Georgia Environmental Finance Authority 466 of 486 February 06, 2019 Baseload > Water Heating > Maintenance/Inspection Tools: 1. Flashlight 2. Inspection mirror 7.8103.1b - Visual inspection Check draft diverter alignment Inspect for rust, corrosion, and leaks GA Wx Field Guide Georgia Environmental Finance Authority 467 of 486 February 06, 2019 Baseload > Water Heating > Maintenance/Inspection 7.8103.1 - Storage-Type Appliance Desired Outcome: Safe, reliable, and efficient operation of the appliance maintained Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 7.8103.1c - Thermal efficiency Desired Outcome: Safe, reliable, and efficient operation of the appliance maintained Specification(s): Water heater storage tanks shall have a minimum R-value of R-24 Added insulation will not obstruct the unit's draft diverter, pressure relief valve, thermostats, hi-limit switch, plumbing pipes or elements, and thermostat access plates The first 6' of inlet and outlet piping will be insulated in accordance with IRC or local requirements, whichever is greater Objective(s): Reduce standby losses from near tank piping and storage tank Ensure insulation does not make contact with flue gas venting After Insulated storage-type water heater GA Wx Field Guide Georgia Environmental Finance Authority 468 of 486 February 06, 2019 Baseload > Water Heating > Maintenance/Inspection 7.8103.1c - Thermal efficiency Tools: 1. Scissors 2. Utility knife 3. Outward clinching staple gun Materials: 1. Insulation blanket 2. Plastic zip ties 3. Tape 4. Staples GEFA has obtained a variance from DOE allowing R-5 tank insulation instead of R-24. Use R-5 tank wrap unless the manufacturer prohibits adding additional insulation. Maintain at least 2" clearance between insulation and the draft diverter. Cut out around thermostats, pressure relief valves, and other items listed in the specification. GA Wx Field Guide Georgia Environmental Finance Authority 469 of 486 February 06, 2019 Baseload > Water Heating > Maintenance/Inspection 7.8103.1 - Storage-Type Appliance Desired Outcome: Safe, reliable, and efficient operation of the appliance maintained Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 7.8103.1e - Temperature and pressure relief valve Desired Outcome: Safe, reliable, and efficient operation of the appliance maintained Specification(s): Correct temperature and pressure relief valve will be installed in compliance with IRC and according to manufacturer specifications Temperature and pressure relief valve discharge tube will be installed in accordance with IRC Objective(s): Discharge excessive energy (pressure or temperature) from storage tank to safe location Before After Water heaters should be not capped of at t&p T&P discharge should be piped to a safe and valve observable location Tools: 1. Pipe wrench 2. Hacksaw Materials: 1. PVC 2. Plumber's epoxy Check local jurisdictional codes. Paraphrased from 2012 IRC P2803.6.1: Temperature and pressure GA Wx Field Guide Georgia Environmental Finance Authority 470 of 486 February 06, 2019 Baseload > Water Heating > Maintenance/Inspection 7.8103.1e - Temperature and pressure relief valve relief valve discharge pipes should not be connected to drainage system. T&P discharge pipes should be a clean line without valve or tee, flowing with gravity to an observable and safe location that cannot cause personal injury or structural damage -- the floor, an existing drain pan, a waste receptor, or to the outdoors. Pipe should not terminate more than 6" from floor, pan or waste receptor. GOOD: T&P discharge should be piped within 6" of the floor or to outdoors BAD: T&P discharge should flow with BAD: T&P discharge should not be gravity and be observable piped into drainage system GA Wx Field Guide Georgia Environmental Finance Authority 471 of 486 February 06, 2019 Baseload > Water Heating > Maintenance/Inspection 7.8103.2 - On-Demand Appliance Desired Outcome: Safe, reliable, and efficient operation of the appliance maintained Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 7.8103.2a - Health and safety Desired Outcome: Safe, reliable, and efficient operation of the appliance maintained Specification(s): Combustion safety testing will be performed in accordance with the Health and Safety Chapter of the Standard Work Specifications for Single-Family Housing or other equivalent practice Electrical components will be verified to comply with NFPA 70 National Electric Code (e.g., no electrical box connector, no disconnect, improperly sized breaker and wire) Objective(s): Identify potential health and safety issues On-demand water heater Check carbon monoxide levels in the appliance vent GA Wx Field Guide Georgia Environmental Finance Authority 472 of 486 February 06, 2019 Baseload > Water Heating > Maintenance/Inspection 7.8103.2a - Health and safety Tools: 1. Personal CO monitor 2. Combustion analyzer with probe 3. Manometer 4. Smoke pencil Materials: 1. CO alarm 2. Fasteners See also SWS 2.0201.2a-2.0299.1i for all Combustion Safety details and SWS 2.0602.2c for Electrical Safety. GA Wx Field Guide Georgia Environmental Finance Authority 473 of 486 February 06, 2019 Baseload > Water Heating > Maintenance/Inspection 7.8103.2 - On-Demand Appliance Desired Outcome: Safe, reliable, and efficient operation of the appliance maintained Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 7.8103.2b - Visual inspection Desired Outcome: Safe, reliable, and efficient operation of the appliance maintained Specification(s): Inspection will be conducted to show compliance with the IRC, including but not limited to: Water or fuel leaks Damaged or missing pipe insulation and tank insulation, where applicable Damaged wiring Venting issues with draft and condensation (e.g., soot, rusting of flue pipe, burned paint or wires, efflorescence) Corrosion (e.g., rust, mineral deposits) General condition of components Objective(s): Determine needed repairs or maintenance Check installation and ensure it meets manufacturer's instructions and local codes GA Wx Field Guide Georgia Environmental Finance Authority 474 of 486 February 06, 2019 Baseload > Water Heating > Maintenance/Inspection 7.8103.2b - Visual inspection 1 2 Inspect for rust, corrosion, and dust around draft diverter. Verify diverter is centered and fastened. Check T&P valve Check draft diverter alignment 3 Inspect for rust, corrosion, and leaks 4 Inspect for signs of flame rollout, thermostat and gas valve condition, and proper T&P relief valve termination GA Wx Field Guide Georgia Environmental Finance Authority 475 of 486 February 06, 2019 Baseload > Water Heating > Maintenance/Inspection 7.8103.2 - On-Demand Appliance Desired Outcome: Safe, reliable, and efficient operation of the appliance maintained Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 7.8103.2c - Temperature and pressure relief valve Desired Outcome: Safe, reliable, and efficient operation of the appliance maintained Specification(s): Correct temperature and pressure relief valve will be installed in compliance with IRC and according to manufacturer specifications Temperature and pressure relief valve discharge tube will be installed in accordance with IRC Objective(s): Discharge excessive energy (pressure or temperature) from storage tank to safe location Unsafe Water heaters should be not capped off at T&P relief valve Safe T&P discharge should be piped to a safe and observable location GA Wx Field Guide Georgia Environmental Finance Authority 476 of 486 February 06, 2019 Baseload > Water Heating > Maintenance/Inspection 7.8103.2c - Temperature and pressure relief valve Tools: 1. Pipe wrench 2. Hacksaw or tubing cutter 3. Propane or MAPP gas torch Materials: 1. CPVC or copper piping and fittings 2. CPVC primer and cement 3. Flux, solder, and emery cloth for sweating copper fittings 4. Teflon tape or pipe thread sealing compound Check local jurisdictional codes. Paraphrased from 2012 IRC P2803.6.1: Temperature and pressure relief valve discharge pipes should not be connected to drainage system. T&P discharge pipes should be a clean line without valve or tee, flowing with gravity to an observable and safe location that cannot cause personal injury or structural damage -- the floor, an existing drain pan, a waste receptor, or to the outdoors. Pipe should not terminate more than 6" from floor, pan or waste receptor. GOOD: T&P discharge should be piped within 6" of the floor or to outdoors BAD: T&P discharge should flow with BAD: T&P discharge should not be gravity and be observable piped into drainage system GA Wx Field Guide Georgia Environmental Finance Authority 477 of 486 February 06, 2019 Baseload > Water Heating > Maintenance/Inspection 7.8103.2 - On-Demand Appliance Desired Outcome: Safe, reliable, and efficient operation of the appliance maintained Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 7.8103.2d - Flue gas testing Desired Outcome: Safe, reliable, and efficient operation of the appliance maintained Specification(s): Undiluted flue gases will be checked with a calibrated combustion analyzer in accordance with BPI-1100-T If combustion is not in compliance with BPI-1100-T, diagnostics and adjustments will be done to manufacturer specifications or local codes Objective(s): Perform combustion testing Best Practice Test flue gases at outlet of vent to verify carbon monoxide levels are within specifications Tools: 1. Properly calibrated combustion analyzer GA Wx Field Guide Georgia Environmental Finance Authority 478 of 486 February 06, 2019 Baseload > Water Heating > Maintenance/Inspection 7.8103.2d - Flue gas testing 1 Verify that calibration date is current on combustion analyzer 2 3 Test flue gases for carbon monoxide Verify that carbon monoxide levels are at outlet of vent within specifications GA Wx Field Guide Georgia Environmental Finance Authority 479 of 486 February 06, 2019 Baseload > Water Heating > Maintenance/Inspection 7.8103.2 - On-Demand Appliance Desired Outcome: Safe, reliable, and efficient operation of the appliance maintained Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 7.8103.2f - Venting of flue gases Desired Outcome: Safe, reliable, and efficient operation of the appliance maintained Specification(s): Condition of venting will be inspected in accordance with Section 504 IFGC, NFPA 54, or NFPA 58 for gas water heaters or NFPA 31 for oil water heaters, and authority having local jurisdiction Objective(s): Verify proper venting of flue gases Inspect direct vents for proper connections, rust, corrosion, and clearances Inspect direct venting for proper connections, rust, corrosion, and clearances Tools: 1. Flashlight 2. Inspection mirror Check that all connections are secure, free of rust and corrosion, and that vents are made from the proper material. Verify that sealed combustion units are installed as direct vents, that is, with both combustion air intakes and exhaust gas vents connected. GA Wx Field Guide Georgia Environmental Finance Authority 480 of 486 February 06, 2019 Baseload > Water Heating > Maintenance/Inspection 7.8103.2f - Venting of flue gases Check that terminal locations are in accordance with the IRC, Section G2407, manufacturer's instructions, and/or local codes. Verify12" between a vent terminal and any non-mechanical building vent or combustion air inlet from another appliance Check that there is 12" between vent terminals and any operable door or window Ensure 12" clearance from the edge of a vent to any inside corner of the building Verify 12" between any two vent terminals Verify vent terminals are least 3 feet higher than any mechanical air inlet closer than 10 feet away horizontally Ensure there is 60" between terminals in line vertically Verify vent terminals are 36" below any eave, soffit, porch, or deck within 24 horizontal inches of center of vent Ensure that vents are at least 36" above grade, porch, deck, veranda, or snow line GA Wx Field Guide Georgia Environmental Finance Authority 481 of 486 February 06, 2019 Baseload > Water Heating > Maintenance/Inspection 7.8103.2 - On-Demand Appliance Desired Outcome: Safe, reliable, and efficient operation of the appliance maintained Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 7.8103.2g - Fuel supply Desired Outcome: Safe, reliable, and efficient operation of the appliance maintained Specification(s): Condition of fuel supply components will be checked in accordance with NFPA 31 for oil, NFPA 54 for gas, NFPA 58 for propane, or NFPA 70 National Electric Code for electric, and authority having jurisdiction Objective(s): Verify sufficient fuel to the water heater burner and element Inspect fuel supply and verify that sizing and capacity are correct Tools: 1. Flashlight GA Wx Field Guide Georgia Environmental Finance Authority 482 of 486 February 06, 2019 Baseload > Water Heating > Maintenance/Inspection 7.8103.2g - Fuel supply Inspect gas lines for corrosion, leaky fittings, worn flex lines, missing sediment traps, and kinked copper Inspect LP gas tanks for corrosion, proper location, leaky fittings, and kinked or damaged copper GA Wx Field Guide Georgia Environmental Finance Authority 483 of 486 February 06, 2019 Baseload > Water Heating > Maintenance/Inspection 7.8103.2 - On-Demand Appliance Desired Outcome: Safe, reliable, and efficient operation of the appliance maintained Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 7.8103.2h - Cold water supply Desired Outcome: Safe, reliable, and efficient operation of the appliance maintained Specification(s): Water supplied to the appliance will be of sufficient volume and pressure to be in accordance with manufacturer specifications Objective(s): Verify sufficient volume and pressure of water to the appliance Best Practice Testing water supply pressure Tools: 1. Water pressure gauge Check manufacturer's specifications for flow and pressure requirements. System pressure may be easily measured with a pressure gauge attached to a hose bib or faucet. Pipe sizing calculations (to ensure adequate flow rates) are best left to a licensed plumber or mechanical contractor. GA Wx Field Guide Georgia Environmental Finance Authority 484 of 486 February 06, 2019 Baseload > Water Heating > Maintenance/Inspection 7.8103.2 - On-Demand Appliance Desired Outcome: Safe, reliable, and efficient operation of the appliance maintained Note: The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail. 7.8103.2i - Discharge temperature Desired Outcome: Safe, reliable, and efficient operation of the appliance maintained Specification(s): Discharge temperature will be set not to exceed 120F or in accordance with local code, whichever is lower Objective(s): Ensure safe hot water supply temperature to fixtures Unsafe Water heaters producing water over 120 degrees raise heating costs Tools: 1. Thermometer Safe Water heaters should produce water under 120 degrees to prevent scalding GA Wx Field Guide Georgia Environmental Finance Authority 485 of 486 February 06, 2019 Baseload > Water Heating > Maintenance/Inspection 7.8103.2i - Discharge temperature 1 Test temperature of hot water at faucets in house 2 Hot water temperatures should not exceed 120 degrees Fahrenheit 3 Adjust water heater settings and insulate as needed 4 After adjustment and insulation, retest to verify temp is under 120 degrees GA Wx Field Guide Georgia Environmental Finance Authority 486 of 486 February 06, 2019