Comment period is open from May 8th to June 8th, 2012
Topic: Safe Work Practices Subtopic: Global Worker Safety Health and Safety 1.1 Detail Name: Static Electric Shock Desired Outcome:...
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
For an additional level of protection, metal coupler on the hose will be connected to the grounding wire Grounding wire will be connected to the...
Topic: Safe Work Practices Subtopic: Global Worker Safety 1.2 Detail Name: House Current Electric Hazard Desired Outcome: Prevention of...
Metal skin and frame will be grounded through the panel box to avoid electrical shock
For an additional level of protection, metal fill tube will be connected to the grounding wire Grounding wire will be connected to the copper...
An electrical safety assessment will be performed All electric tools will be protected by ground-fault circuit interrupters (GFCI) Three-wire...
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...
Topic: Safe Work Practices Subtopic: Mobile Home Global Worker Safety 1.3 Detail Name: Global Worker Safety Desired Outcome: Work...
Caution will be used around power cords, hoses, tarps and plastic sheeting Precautions will be taken when ladders are used, when working at...
Ensure staff is aware of risks during summer months including the symptoms of heat stroke and heat exhaustion Appropriate ventilation, hydration,...
Ignition sources will be identified and eliminated (e.g., turn off pilot lights, space heaters and fuel supply) Use of flammable material will be...
The source of all contaminants (e.g., sewage, dead animals, needles) will be corrected, repaired or removed before performing inspections that...
Design will be incorporated to eliminate or minimize hazards (e.g., material selection, access to equipment for installation and maintenance,...
Durable and wrist protecting gloves will be worn that can withstand work activity
If the risk of airborne contaminants cannot be prevented, proper respiratory protection will be provided and worn (e.g., N-95 or equivalent face...
If contaminants are present, (e.g., insulation materials) removable protective clothing will be worn Eye protection will always be worn (e.g.,...
Spaces with limited ingress and egress and restricted work area will be considered Confined Space. Access and egress points will be located before...
Power tools will be inspected and used according to manufacturer specifications to minimize hazards associated with missing ground prongs, ungrounded...
The least toxic suitable material will be chosen Hazardous materials will be handled in accordance with manufacturer specifications or MSDS...
Appropriate PPE will be used (e.g., knee pads, bump caps, additional padding) Proper equipment will be used for work Proper lifting techniques...
Hand tools will be used for intended purpose only
Topic: Health and Safety Subtopic: Safe Work Practices 1.4 Detail Name: Combustion Worker Safety Desired Outcome Work completed safely...
Follow all worker safety specifications in Global Worker Safety section
Topic: Combustion Safety Testing Subtopic: Combustion Safety Testing – General Combustion Safety 2.1 Detail Name: Combustion Appliance Zone...
Emergency problems (e.g., gas leak, ambient CO levels that exceed 35 ppm) will be communicated clearly and immediately to the customer and...
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...
The presence and operability of a draft regulator will be verified and tested Combustion venting systems will be inspected for damage, leaks,...
Baseline pressure will be measured in Combustion Appliance Zone (CAZ) with reference to outdoors when testing any natural draft appliance
CAZ depressurization testing will be administered on all natural draft equipment
Appliance spillage testing will be administered on natural draft appliances and shall not exceed 2 minutes
CO will be tested for in undiluted flue gases of combustion appliances CO levels exceeding 100 ppm as measured, or 200 ppm air-free measurement,...
Final combustion testing will be conducted at project completion to ensure compliance with the above specifications
Topic: Combustion Safety Testing Subtopic: Unvented Space Heaters 2.2 Detail Name: Unvented Space Heaters: Propane, Natural Gas, and Kerosene...
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...
Occupant will be educated on potential hazards of unvented combustion appliances (primary or secondary) within a living space
Topic: Combustion Safety Testing Subtopic: Vented Gas Appliances 2.3 Detail Name: Combustion Air for Natural Draft Appliances Desired...
The minimum required volume will be 50 cubic feet per 1,000 Btu/h in accordance with IRC G2407.5.1 or G2407.5.2, except that where the air...
Additional combustion air will be provided in accordance with IRC G2407
If a combustion appliance spillage exceeds two minutes during pressure testing, specify measures to mitigate.
All homes will have a functioning CO alarm. EPA offers expanded actions If CO levels in interior living spaces exceed outdoor levels, investigate...
Occupants will be educated on the operation and maintenance of the CO alarm Completed work on combustion appliances and recommended maintenance...
Topic: Combustion Safety Testing Subtopic: Vented Gas Appliances 2.4 Detail Name: Combustion Flue Gas – Orphaned Water Heaters Desired...
The minimum required volume will be 50 cubic feet per 1,000 Btu/h in accordance with IRC G2407.5.1
Topic: Combustion Safety Testing Subtopic: Vented Gas Appliances 2.5 Detail Name: Draft Regulation – Category I Appliance Desired Outcome:...
Oil systems having an operable draft regulator will be verified Combustion venting systems will be inspected for damage, leaks, disconnections...
A draft regulator will be installed if necessary Manufacturer specifications for installation will be followed (e.g., size, type, location)
All homes will have a functioning CO alarm. EPA offers expanded actions If CO levels in interior living spaces exceed outdoor levels, potential...
Topic: Safety Devices Subtopic: Combustion Safety Devices 2.6 Detail Name: Smoke Alarm Desired Outcome: Properly installed smoke alarms
Smoke alarms will be listed and labeled in accordance with UL 217 and installed (hardwired) in accordance with the IRC or as required by the...
Battery operated alarms will be installed in accordance with the IRC and manufacturer specifications Number of smoke alarms installed will be per...
Topic: Safety Devices Subtopic: Combustion Safety Devices 2.7 Detail Name: Carbon Monoxide Alarm Desired Outcome: Properly installed CO...
Hardwired CO detection or warning equipment will be installed in accordance with the IRC or as required by the authority having jurisdiction ...
Battery operated CO detection or warning equipment will be installed in accordance with the IRC and manufacturer specifications as required by the...
Topic: Combustion Safety Testing Subtopic: Combustion Safety Testing – General 2.8 Detail Name: Combustion Safety Desired Outcome: Buildup...
Combustion air will be provided from the outside and, where applicable, in accordance with the IRC for the type of appliance installed
If replacing appliances, a sealed-combustion, direct-vent appliance will be installed in accordance with manufacturer specifications and IRC G2427.8...
CO detection or warning equipment will be installed outside of each separate sleeping area in the immediate vicinity of the bedrooms in accordance...
Gas ovens will be tested for CO A clean and tune will be conducted if CO in undiluted flue gas exceeds 100ppm at steady state
Specify clean and tune if the flame has any discoloration, flame impingement, or an irregular pattern or if burners are visibly dirty, corroded or...
Replacement of solid fuel burning appliance with UL-listed and EPA-certified appliances if the existing appliance is not UL-listed or has signs of...
Topic: Combustion Safety Testing Subtopic: Additional Resources 2.9 Combustion Appliance Depressurization Limits Table
Topic: Exhaust Subtopic: Whole House System Ventilation 3.1 Detail Name: Whole House Exhaust Only Strategies Whole house/common space/main...
Assessment will be done using ASHRAE 62.2 standard: • Blower door test • Fan flow measurements • Calculations
Fan type will be capable of continuous operation and selected in accordance with ASHRAE 62.2 for: • Sizing • Climate considerations • Control...
No resistance greater than 3 Pascals will exist between fan intake location with reference to the common area
ASHRAE 62.2 will be referenced for climate considerations • Note: Whole house mechanical net exhaust flow for hot-humid climate will not exceed...
CAZ test will be performed where combustion appliances are utilized, where applicable
Occupant will be educated on: • Purpose of the ventilation system • Proper operation and use of controls • Cost and benefit of system • Manual...
Total exhaust system airflow will be measured
Topic: Exhaust Subtopic: Fans 3.2 Detail Name: Fan placement (Whole House/Common Space Exhaust Only) Desired Outcome: Provide primary...
Clearance for size of the fan recommended will be determined Consideration will be given for adequate head clearance
Power source load will be determined as adequate Consideration will be given to power source location
Consideration will be given to: • Vent termination location • Amount of space for duct run • Roof condition and type (e.g., metal, shingle, bow...
Fan will be secured to a structural component Structural integrity of the manufactured home will be maintained (e.g., roof trusses, walls, floor...
Topic: Exhaust Subtopic: Fans 3.3 Detail Name: Sound Ratings - New Fan Installation Desired Outcome: Systems operate as quietly as possible
System will be rated at a sound no greater than 1.0 Sone
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...
Topic: Whole House Ventilation Subtopic: Ventilation System 3.4 Detail Name: Decommissioning Existing Exhaust or Supply Ventilation Systems ...
Power supply will be disconnected and properly terminated in visible junction box
Fan components will be removed and disposed of lawfully Duct work will be removed if necessary OR Fan housing will be left in place, ducts...
Fan opening will be sealed and insulated If necessary, the void from the duct work removal will be insulated Fan termination will be sealed
Combustion safety test will be performed where combustion appliances are utilized
Topic: Whole House Ventilation Subtopic: Ventilation System 3.5 Detail Name: Commissioning Existing Exhaust or Supply Ventilation Systems ...
Visual inspection will be performed and documented for: Electrical connections Name plate (rated sone and flow) Damper operation (internal and...
Calibrated device will be used to test for flow measurement
Work order will be developed as necessary in accordance with systems check and flow rate
Total exhaust and/or supply system ventilation airflow will be measured
Topic: Exhaust Subtopic: Components 3.6 Detail Name: Ducts (Exhaust Fans) Desired Outcome Installed ducts effectively move the required...
Consideration will be given to: • Vent termination location • Amount of space for duct run • Roof condition, type and access (e.g., metal,...
Ducts installed outside of the thermal envelope will be insulated to a minimum of R-8 or equivalent to local codes
Horizontal runs will be supported in accordance with flex duct manufacturer specifications, local codes Supports with a width of at least 1 ½”...
Metal-to-metal or metal-to-PVC will be fastened with a minimum of three equally spaced screws Flexible duct-to-metal or flexible duct-to-PVC will...
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 ...
Total exhaust system ventilation airflow will be measured
Topic: Supply Subtopic: Components 3.7 Detail Name: Intake to Forced Air System Desired Outcome Intake reduces pollutant entry, is...
Existing forced air system leakage to the outdoors will be less than 10% of the air handler flow, when measured at 25 Pascals with reference to the...
Wiring will be installed by a licensed electrician Wiring will be installed in accordance with original equipment manufacturer specifications and...
Motorized damper and service switch will be accessible for maintenance
Ventilation duct will be attached as close to the HVAC systems fan as possible while remaining in compliance with manufacturer specifications ...
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...
An accessible filter designed for the system will be installed Filter will be able to remove contaminants consistent with at least minimum...
Occupant will be educated on how and when to change filter
Total intake ventilation airflow will be measured
Topic: Flooring Subtopic: Penetrations Air Sealing 4.1 Detail Name: Electrical, HVAC, Plumbing, Gas, Dryer Vent, General Penetrations Through...
Installer pre-work assessment will be conducted to determine: Structural integrity Standing water Raw sewage Insect infestation Pests...
Patching material will be provided as needed to meet the specific characteristics of the bottom board material and the characteristics of the hole ...
Patching will be provided as needed to meet both the specific characteristics of the bottom board material and the characteristics of the hole ...
Combustion air supplies will be labeled for identification and will not be blocked or sealed Penetrations will be sealed to meet both the specific...
Materials will be selected to comply with Manufactured Housing rules and regulations (e.g., Manufactured Housing Institute) Surface preparation...
Topic: Window and Door Sealing Subtopic: Cracked and Broken Glass 4.10 Detail Name: Replacing Window Glass Desired Outcome: Glass...
Installer pre-work assessment will be conducted to determine: Number Type Location Operating condition Wall construction Size
Presence of lead-based paint in pre-1978 homes will be assumed unless testing confirms otherwise; documentation of testing results will be kept on...
Damaged glass will be removed
Opening will be cleaned Original sealant/material will be removed
Replacement glass will be sized to original width, height and depth Stops will be replaced or installed Glass will be sealed in accordance with...
Topic: Window and Door Sealing Subtopic: Replacement 4.11 Detail Name: Replacement of Windows and Doors Desired Outcome: Smooth...
Installer pre-work assessment will be conducted to determine: - Number - Type - Operating condition - Wall construction
Window or door units will be designed for manufactured home use and will be ENERGY STAR qualified Rough opening will be measured before ordering...
Existing units will be removed Opening will be cleaned Any damaged framing will be replaced Opening for installation will be prepared in...
Window or door units will be installed in accordance with manufacturer specifications
Egress windows will only be replaced with egress windows
Occupants will be notified of changes or repairs made and will be educated on how to operate and maintain window or door
Topic: Window and Door Sealing Subtopic: Maintenance and Repair 4.12 Detail Name: Interior Storm Windows Desired Outcome: Minimize air...
Installer pre-work assessment will be conducted to determine: - Number - Type - Size - Condition of opening
Fixed interior storm windows will not be installed in egress locations
Operable interior storm windows will be installed in accordance with manufacturer specifications
Interior storm windows will be operable and egress rated in egress locations
Occupants will be educated on the proper use and maintenance of storm windows
Topic: Floor Sealing Subtopic: Floor Framing 4.13 Detail Name: Floor Framing – Bay Window Desired Outcome: Floor/framing around window...
Installer pre-work assessment will be conducted to determine: Accessibility Number Type Size Operating condition Condition of opening Wall...
Details that reduce air infiltration will be repaired, replaced, sealed or installed Bay window floor framing that connects interior to exterior...
Details that reduce water infiltration will be repaired, replaced or installed
Materials will be used or installed in accordance with product manufacturer specifications
Topic: Attic Sealing Subtopic: Special Considerations 4.14 Detail Name: Regional Considerations
Water-resistant sealants and/or closed cell foams (use a minimum of 2" to reach water barrier requirement) will be used in all attic sealing details
Plastic, foil or any other Class 1 vapor barrier will not be used
Vapor permeable materials will be used to block and seal penetrations in attic
Topic: Flooring Subtopic: Penetrations 4.2 Detail Name: Electrical, HVAC, Plumbing, Gas, Dryer Vent, General Penetrations through Flooring ...
Installer pre-work assessment will be conducted to determine: - Structural integrity - Insect infestation - Pests - Accessibility - Plumbing...
Backing or infill will be provided as needed to meet the specific characteristics of the selected sealant and the characteristics of the penetration ...
Sealants will be used to fill holes no larger than recommended by manufacturer specifications Sealants will be compatible with all adjoining...
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...
Materials will be selected to comply with Manufactured Housing rules and regulations (e.g., Manufactured Housing Institute) Materials will be used...
Only noncombustible materials will be used in contact with chimneys, combustion exhaust vents and flues
Topic: Walls Subtopic: Exterior Wall Penetrations 4.3 Detail Name: Holes and Penetrations Desired Outcome: Penetrations sealed to...
Installer pre-work assessment will be conducted to determine: Structural integrity Size of wall stud Insect infestation Accessibility...
Like material and/or compatible materials will be used for repairs Materials will be selected to comply with Manufactured Housing rules and...
All holes and penetrations on exterior surface of exterior walls will be sealed to ensure resistance to outdoor elements Intentionally ventilated...
Topic: Walls Subtopic: Interior Wall Penetrations 4.4 Detail Name: Holes and Penetrations Desired Outcome: Penetrations sealed to minimize...
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...
Topic: Walls Subtopic: Marriage Wall Penetrations and Marriage Line 4.5 Detail Name: Holes, Penetrations and Marriage Line Desired...
Installer pre-work assessment will be conducted to determine: - Structural integrity - Insect infestation - Accessibility - Number, type, size...
All accessible holes and penetrations at marriage lines will be sealed continuously at end walls, floors and ceiling Backing or infill will be...
Topic: Attics Subtopic: Penetrations 4.6 Detail Name: General Penetrations (Electrical, HVAC, Plumbing, Vent Termination, Recessed Lighting) ...
Installer pre-work assessment will be conducted to determine: Structural integrity Roof leaks Insect infestation Accessibility Number, type,...
Backing or infill will be provided as needed to meet the specific characteristics of the selected sealant and the characteristics of the penetration...
Ceiling repair material must meet or exceed strength of existing ceiling material Ceiling repair must span from truss to truss or add blocking as...
Only noncombustible materials will be used in contact with chimneys, vents and flues
Topic: Air Sealing Subtopic: Combustion Water Heater Closet 4.7 Detail Name: Combustion Water Heater Closet Desired Outcome: Isolate...
Installer pre-work assessment will be conducted to determine: Combustion safety Proper venting Structural integrity Roof leaks Insect...
When the water heater closet contains a heater that is not sealed combustion or power vented, the closet will be isolated/separated from the rest...
Blower door assisted zonal pressure diagnostics will be used to verify isolation has been achieved
Topic: Attached Addition Sealing Subtopic: Additions 4.8 Detail Name: Holes, Penetrations and Connection Seam Desired Outcome: The...
Only non-combustible materials will be used in contact with chimneys, vents and flues
Installer pre-work assessment will be conducted to determine: Structural integrity Roof leaks Insect infestation Accessibility Mechanical...
Marriage wall seams will be sealed continuously at walls, floors and ceiling connection All accessible holes and penetrations in the addition...
Topic: Window and Door Sealing Subtopic: Maintenance and Repair 4.9 Detail Name: Windows and Doors – Maintenance and Repair Desired...
Installer pre-work assessment will be conducted to determine: Number Type Operating condition Wall construction
All egress windows will be operable as required by local codes All egress doors will be operable as required by local codes
Details that reduce air infiltration will be repaired, replaced, sealed or installed (e.g., plastic gliders, weatherstripping, cranks, latches,...
Details that reduce water infiltration will be repaired, replaced or installed (e.g., replace missing glazing on sash, exterior caulking, exterior...
Windows and doors will be adjusted to properly fit the jamb and allow for ease of operation and security
Occupants will be notified of changes or repairs made and will be educated on how to operate and maintain windows and doors
Topic: Forced Air Subtopic: Commissioning of Equipment Heating and Cooling 5.1 Detail Name: Package Units – Repair and Service Desired...
Assessment will be performed to identify problems with air, refrigerant, electrical, load, safety, indoor environmental quality (IEQ) and/or other...
Non-salvageable components and waste will be removed and disposed of properly Refrigerant will be removed in accordance with EPA requirements
Repairs will be performed by qualified specialist as identified in the assessment Maintenance will be done in accordance with ANSI/ACCA 4...
Service will be performed by qualified personnel as identified in the assessment Maintenance will be done in accordance with ANSI/ACCA 4...
Equipment will be fully tested for proper operation following procedures outlined in ANSI/ACCA 5 QI-2010 Property manager/occupant will be...
Topic: Forced Air Subtopic: Thermostat Replacement 5.10 Detail Name: Heating and Cooling Controls Desired Outcome Heating and cooling...
Supplementary heat will be wired onto second stage heating terminal
The installer options will be set to match the thermostat to the equipment and control board settings
Time delay for equipment will be set in accordance with manufacturer specifications and as appropriate for the climate zone (e.g., no time delay for...
Humidistat will be installed to reflect humidity of the zone in which it is installed Humidistat will be installed in a dry location
Ventilation controls will be connected to operational control system, as originally designed in the factory Powered ventilation system alarm will...
Occupants will be educated on proper use of thermostat including: Proper use of setbacks for air conditioners and heat pumps Allowing occupant...
Mercury-based thermostat will be removed safely and recycled or disposed of in accordance with EPA regulations
Existing controls will be removed in accordance with EPA lead safe work rules
Penetrations for control wiring will be sealed with a durable sealant (e.g. caulk, silicone, foam) at both the interior (e.g., floor, sheetrock) and...
Thermostats will be installed to reflect the temperature of the zone in which they are installed Mounting location for air leakage and conductance...
Blower speed will be set for equipment in accordance with manufacturer specifications
A thermostat with supplementary heat lockout that can interface with an outdoor temperature sensor will be selected
Supplementary heat lockout on air-to-air heat pumps will be set to the economical balance point ANSI/ACCA 3 Manual S-2004 Residential Equipment...
For air-to-air heat pumps, low ambient compressor lockout will be set to 0°F outdoor temperature or ambient compressor lockout will be disabled ...
An outdoor temperature sensor will be installed in accordance with manufacturer specifications
Topic: Forced Air Subtopic: Commissioning of Equipment 5.11 Detail Name: Data Plate Verification Desired Outcome Data for...
Equipment will be visually inspected Information will be recorded from the equipment data plates inside and outside
Topic: Forced Air Subtopic: Commissioning of Equipment 5.12 Detail Name: Combustion Analysis Oil Fired Appliances Desired Outcome...
All testing and inspection holes will be sealed with approved materials
Smoke spot reading will be in accordance with burner manufacturer specifications
Nozzle size, angle and spray pattern will be correct for design input and within equipment firing rate of the heating system manufacturer
Filter will be present, clean and leak free
Measurement will be verified in accordance with manufacturer specifications
Net stack temperature will be measured and verified in accordance with manufacturer specifications
Measurement will be verified in accordance with industry manuals (e.g., Testo, Bacharach)
Excess combustion air will be calculated and shown to be in accordance with industry manuals (e.g., Testo, Bacharach)
CO in the undiluted flue gas will be less than 100 ppm
Topic: Forced Air Subtopic: Commissioning of Equipment 5.13 Detail Name: Electrical Service Desired Outcome Electrical components...
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...
Polarity of equipment will be verified by a qualified technician if wiring is to be modified or repaired
Voltage will be in accordance with manufacturer specifications
Voltage drop will be within acceptable range in accordance with manufacturer specifications
Grounding will be connected in compliance with local code requirements and ANSI/NEMA GR 1-2007, and NFPA 70 National Electric Code Frames of home...
Amperage will not exceed manufacturer full load amperage
Blower compartment safety switch operation will be verified if present
Emergency heat circuit functions will be verified
Topic: Forced Air Subtopic: Special Considerations 5.14 Detail Name: Regional Considerations
New systems will be installed inside of the conditioned space of the house Condensate line will be insulated The house, as well as individual...
Combustion inlets will be installed in accordance with mechanical standards and authority having jurisdiction (e.g., inlets will be terminated above...
Refrigerant charge will be in accordance with ANSI/ACCA 5 QI-2010 HVAC Quality Installation Specification refrigerant charging requirements ...
Refrigerant charge will be in accordance with with ANSI/ACCA 5 QI-2010 HVAC Quality Installation Specification refrigerant charging requirements ...
Refrigerant charge will be in accordance with with ANSI/ACCA 5 QI-2010 HVAC Quality Installation Specification refrigerant charging requirements
Topic: Ducts Subtopic: Duct Sealing 5.15 Detail Name: Preparation and Mechanical Fastening Desired Outcome Ducts and plenums...
Surrounding insulation will be cleared to expose joints being sealed; salvage for reuse if possible Duct surface to receive sealant will be cleaned
Ducts will be fastened with a minimum of three equally spaced screws
Joints will be fastened with tie bands using a tie band tensioning tool For oval flexible duct to metal connections, tie bands cannot be used;...
Joints will be fastened with outward clinching (stitch) staples and c-channels if possible
Metal take-off collar specifically designed for the thickness of the duct board will be used All fingertabs will be bent down securely ...
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...
Pre-drill for screws or use ring shanked nails to fasten boot to wood
If accessible, boot hanger will be fastened to adjacent framing with screws or nails Boot will be connected to boot hanger with screws If...
Metal take-off collar with a hip and an internal metal backer will be used Take-offs will be in accordance code requirements
Topic: Ducts Subtopic: Duct Sealing 5.16 Detail Name: Support for horizontal, suspended ducts Desired Outcome Ducts and plenums...
Flexible and duct board ducts and plenums will be supported where feasible in accordance with flex duct manufacturer specifications and local codes ...
Topic: Ducts Subtopic: Duct Sealing 5.17 Detail Name: Air Sealing System Desired Outcome Ducts and plenums sealed to prevent leakage
Any closure system used will meet or exceed applicable standards
Duct surface to receive sealant will be cleaned Seams, cracks, joints, holes and penetrations less than ¼” will be sealed using fiberglass mesh...
Duct surface to receive sealant will be cleaned Fiberglass mesh and mastic will overlap temporary tape by at least 1” on all sides Seams,...
Pre and post retrofit duct leakage will be performance tested using a duct blaster or pressure pan and results will be documented and reported to the...
Topic: Ducts Subtopic: Duct Sealing 5.18 Detail Name: Proprietary Spray Application Desired Outcome Ducts and plenums sealed to...
Sealant will be applied in accordance with manufacturer specifications as well as UL 181M, NFPA 90A, and NFPA 90B
Topic: Ducts Subtopic: Duct Sealing 5.19 Detail Name: Air Sealing System Components Desired Outcome Ducts and plenums sealed to...
Gaps between boot and gypsum less than a ¼” will be sealed using mastic or appropriate flexible caulking Gypsum edge will be wetted before...
Joints will be sealed and cracks/holes not needed for proper function of unit will be sealed using removable sealant (e.g., duct tape)
Topic: Forced Air Subtopic: Commissioning of Equipment 5.2 Detail Name: Commissioning: Refrigerant Charge Desired Outcome: Properly...
Leak detection, air flow and refrigerant line inspection will be checked and repaired to determine need for refrigerant charge
Charge will be tested and work performed by a qualified contractor
Contractor will provide documentation of work performed
External static pressure will be measured and documented EPA refrigerant charge log will be provided
Topic: Ducts Subtopic: Duct Sealing 5.20 Detail Name: Return – Framed Platform Desired Outcome The return duct is installed to...
Debris and dirt will be cleaned out of the return platform
Backing or infill will be provided as needed to meet the specific characteristics of the selected material and the characteristics of the open space...
Sealants will be compatible with their intended surfaces Sealants will be continuous and meet fire barrier specifications
Topic: Ducts Subtopic: Duct Sealing 5.21 Detail Name: Removing Supply Vents From Garages Desired Outcome Safe removal of garage supply...
Supply run feeding the register will be truncated closest to the supply plenum as possible If directly connected to the plenum, the supply run...
All holes in sheet metal ducts will be patched with sheet metal and secured with sufficient screws to hold the patch flat without gaps Holes left...
All patches will be sealed with mastic meeting UL 181 and in accordance with manufacturer specifications
All abandoned ductwork will be removed from work area
Holes created by the removal of the register and boot will be patched and taped using material meeting local fire wall/separation codes
Units will be tested for external static pressure (ESP) before and after work If there is a significant rise in ESP, air flow testing will be...
CAZ testing will be performed where combustion appliances are utilized
Topic: Ducts Subtopic: Duct Insulation 5.22 Detail Name: Insulating Flex Ducts Desired Outcome Lower conductive heat transfer by ducts...
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 ...
Vermin access points will be identified and treated appropriately (e.g., seal access holes)
All accessible low R-value flexible ducting not meeting local codes will be removed from premises and adequate insulation will be added
All flexible ducting will have a minimum of R-8, or in accordance with local regulations, and a continuous vapor barrier
Replacement ducts will be appropriately sized
Flex duct will be supported in accordance with manufacturer specifications and cut to fit with maximum stretch Beaded rigid elbow or equivalent...
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...
UL 181 B-M listed mastic product will be used to seal the connection
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...
All accessible joints, seams and connections will be sealed with UL 181 approved mastics
All metal fittings including boots, elbows and take-offs will be insulated separately using a minimum of R-8 duct wrap with a vapor barrier...
Topic: Ducts Subtopic: Duct Insulation 5.23 Detail Name: Insulating Metal Ducts Desired Outcome Lowered thermal conductance of duct...
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...
All accessible ducts will be sealed with a UL-181 mastic before insulation is applied
Duct insulation will be mechanically fastened (e.g., stitch staples, tie bands) and sealed with no exposed metal Duct insulation will be secured...
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...
Topic: Forced Air Subtopic: Design 5.3 Detail Name: Replace Return Air Systems that Incorporate Floor Cavity (Belly) and/or Attic as the Return...
Existing return air openings will be closed off and sealed with a durable material equivalent in strength to the surrounding material Disturbed...
Alternate return air opening will be provided to the furnace closet (e.g., replace louvered door or install grilles); whenever possible, follow...
Pressures will be measured with the furnace fan operating across interior doors that can be closed and have a supply and/or return behind them ...
Property manager/occupant will be educated on changes, how to operate and maintain the system and any potential health concerns (e.g., lead, asbestos)
Topic: Ducts Subtopic: Duct Sealing 5.4 Detail Name: Duct Sealing: Supply Plenum (Furnace to Trunk Duct Connection) in Both Upflow and Downflow...
Installer pre-work assessment will be conducted to determine: • Size of plenum • Alignment • Connection method • Existing sealing
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 will be rebuilt or repaired using compatible materials and will be: • Mechanically fastened • Sealed • Durable • Structurally sound...
Point of access options include: Option 1: Through the trunk duct • Repair and seal access hole in the trunk duct • Install insulation...
Equipment will be cycled Combustion Appliance Zone (CAZ) test will be performed where combustion appliances are utilized
Topic: Ducts Subtopic: Duct Sealing 5.5 Detail Name: Duct Sealing: Cross Over Ducts Desired Outcome: Deliver all air from trunk to trunk...
Installer pre-work assessment will be conducted to determine: • Location • Types • Leakage points
Flexible cross over duct connections will be added, rebuilt or repaired using compatible materials and will be: • Mechanically fastened at both...
Cross over ducts will be installed so they are not in contact with the ground Cross over ducts will be supported in accordance with flex duct...
Through-the-rim cross over ducts will be located and accessed through the bottom liner and branch duct; all branch cross over duct connections and...
Access hole in the trunk duct will be repaired and sealed Insulation will be reinstalled Bottom liner/belly will be repaired
Access to the attic will be created for all attic areas that contain cross over ducts, where feasible Plenum boxes and cross over duct connections...
Topic: Ducts Subtopic: Duct Sealing 5.6 Detail Name: Duct Sealing: Hard and Flex Branch Ducts Desired Outcome: Deliver air from trunk to...
Installer pre-work assessment will be conducted to determine: • Location • Connection types • Leakage points Access holes will be created for...
Excess flex duct will be removed between the take off at trunk and floor register boot
Hard and flex duct branch connections will be rebuilt or repaired using compatible materials and will be mechanically fastened and sealed Ends...
Access hole in the trunk/branch duct will be repaired and sealed Insulation will be reinstalled Bottom liner/belly will be repaired
Topic: Ducts Subtopic: Duct Insulation 5.7 Detail Name: Ducts: Insulation and Vapor Barrier Desired Outcome: Minimize condensation
Ducts will have continuous insulation and vapor barrier Insulation will be sufficient to prevent dew point on surface of ducts
Inspection and/or testing will be conducted to determine whether ducts are within thermal, pressure and vapor boundary If ducts are within...
All exposed metal will have continuous insulation and vapor retarder
Topic: Heating and Cooling Subtopic: Commissioning of Equipment 5.8 Detail Name: Combustion Analysis of Gas-Fired Appliances (LP and Natural...
Heating equipment will be placed in operation in accordance with applicable NFPA standards and manufacturer specifications when available
Measurement will be verified by a certified professional in accordance with fuel type and manufacturer specifications
Excess combustion air will be calculated and verified in accordance with industry manuals (e.g., Testo, Bacharach)
All testing and inspection holes will be sealed with manufacturer approved materials
Topic: Health and Safety Subtopic: Safe Work Practices 5.9 Detail Name: Heating and Cooling Worker Safety (3) Desired Outcome Work...
Worker safety specifications in Global Worker Safety section will be followed
Identify any mercury-containing thermostats and dispose of or recycle in accordance with Environmental Protection Agency (EPA) guidance
Suspected asbestos hazards will be identified in furnaces (e.g., gaskets), wood stoves, zonal heating devices, electrical wiring insulation, boilers...
Gloves will be worn when working with metal ducts Workers will wear personal protective equipment (PPE) as needed to protect themselves against...
Worker will check for presence of combustible gas leaks before work begins Leaks will be repaired before work is performed
Workers will check for presence of ambient CO before and during work CO issues will be addressed before work is performed or continued
Pipes will be sealed by a certified professional with an approved fastening process and sealant in accordance with manufacturer specifications...
A secondary LP safety detector system (valve, exhaust fan, alarm light) will be installed by a certified professional for propane piping installed...
Topic: Belly Subtopic: Preparation Insulation 6.1 Detail Name: Prepare Belly Floor Cavity for Insulation Desired Outcome: Belly floor...
Gas, water, waste, electrical lines will be checked for: - Plumbing leaks - Gas/oil leaks - Attachment - Standing water - Raw sewage - Pests
Where bottom board/rodent material is missing or damaged and accessible, the following will be ensured: Duct sealing completed Gas, water and...
Topic: Attics Subtopic: Attic Ceilings 6.10 Detail Name: Installing Fiberglass Blown Insulation for Flat, Bowed or Vaulted Ceilings (via...
All combustion appliance flues will be terminated to the outdoors and terminations will maintain proper clearance above snow loads A distance no...
Access to the attic cavity will be created using one of these methods: • Drilling • Cutting • Continuous slicing along the center line (at the...
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...
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...
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...
Installation process will be considered complete when installer has verified that damage has not occurred to the roof or ceiling assemblies during...
Topic: Insulation Subtopic: Attic Insulation 6.11 Detail Name: Installing Fiberglass Blown Insulation for Flat, Bowed or Vaulted Ceilings (Via...
All combustion appliance flues will be terminated to the exterior of the house and terminations will maintain proper clearance above snow loads A...
Special precautions will be taken to limit fiberglass and construction dust exposure to the occupant and occupant belongings
Equidistant holes will be drilled in a straight row parallel to the longitudinal exterior wall of the ceiling If a longitudinal ceiling trim...
Holes will be plugged or covered and sealed to be aesthetically pleasing If existing trim was removed, it will be reinstalled
Topic: Attics Subtopic: Attic Insulation 6.12 Detail Name: Installing Fiberglass Blown Insulation in Roof-Over Constructions Desired...
If occupant will allow access from interior, installation through the ceiling is preferred Attic space created by the roof-over will be accessed...
Topic: Attic Subtopic: Attic Transition Walls 6.13 Detail Name: Installing Insulation at Flat and Cathedral Ceiling Transition Wall Desired...
A visual inspection of the highest point of the transition wall will be completed Access points will be determined from the gable end, roof,...
Attic will be accessed through the location that allows the most efficient and effective insulation coverage
Blowing machine pressure test will be performed with air on full, feed off and gate closed Insulation will be blown against the transition wall...
Insulation will be installed to prescribed R-value in accordance with manufacturer specifications Spray polyurethane foam (SPF) will be applied to...
Batt insulation will be installed in accordance with manufacturer specifications without gaps, voids, compressions, misalignments or wind intrusions ...
Created access points will be covered and sealed in an aesthetically pleasing manner Existing access points (e.g., gable vent) will be returned to...
Topic: Walls Subtopic: Exterior Wall Insulation 6.14 Detail Name: Exterior Dense Pack Desired Outcome Walls properly prepared to...
Lead safety procedures will be followed Cavities will be free of hazards, intact and able to support dense pack pressures Drilling hazards...
Using fill tube, 100% of each cavity will be filled to a consistent density: Blown fiber glass, mineral fiber, rock and slag wool or spray foam...
Topic: Belly Subtopic: Floor Cavity Insulation 6.2 Detail Name: Insulation of Floor Cavity with Blown Material Desired Outcome: Consistent...
Insulation will be installed in accordance with recommended R-value and density
Road barrier must be intact and free from holes and capable of supporting the insulation
Each cavity will be insulated to specified R-value and density The number of bags installed will be confirmed and will match the number required...
Flame spread index of selected materials will not exceed 25 with an accompanying smoke-developed index not to exceed 450 when tested in accordance...
Documentation of material and R-value will be provided to occupant
Topic: Belly Subtopic: Floor Cavity Insulation 6.3 Detail Name: Insulation of Floor Cavity with Batt Material Desired Outcome: Consistent...
Ensure complete accessibility of floor cavity Clean floor cavities Remove all remnants of previous insulation and bottom board
Each cavity will be insulated to specified R-value and density If insulation has facing, facing will be in contact with the heated side ...
Insulation materials will be of minimal water absorbency and flame spread and smoke-developed index for insulation will be in accordance with IRC...
Topic: Belly Subtopic: Floor Cavity Insulation 6.4 Detail Name: Insulation of floor cavity with spray foam material Desired Outcome:...
Insulation will be installed in accordance with recommended R-value
All floor areas will be open and accessible for spray foam application Any openings in the subfloor larger than ¼” will be covered with...
Insulation will be installed to prescribed R-value in accordance with manufacturer specifications In accordance with manufacturer specifications,...
Insulation will be installed in accordance with manufacturer specifications Flame spread index of selected materials will not exceed 25 with an...
Spray foam will be separated from the occupied space of the building with a 15-minute thermal barrier (typically 15/32” sheathing, 1/2” gypsum board...
Topic: Walls Subtopic: Exterior Wall Insulation 6.5 Detail Name: Stuffing Wall Cavities with Fiberglass Batts Desired Outcome: Consistent...
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,...
Wall cavities will be inspected for moisture damage, pests, location and integrity of the wiring and holes to the interior and repaired as necessary...
A sheet of Lexan (polycarbonate) will be cut to the following specifications to create a stuffer tool: Approximately 1’ x 8’ x ¼” with a 5...
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...
Sub sheathing will be patched or repaired as necessary
If skirting was removed, skirting will be reinstalled to shed water to the outside of the skirting Siding will be reattached with new fasteners ...
Topic: Walls Subtopic: Exterior Wall Insulation 6.6 Detail Name: Fiberglass Blown Insulation Installation (Lifting Siding) Desired Outcome:...
If skirting overlaps siding, skirting will be removed Fasteners will be removed from the bottom of the siding, working upward until the siding can...
Installer pre-work assessment will be conducted to determine: - Moisture damage - Presence of infestation or pests - Location and integrity of...
Blowing machine pressure test will be performed with air on full, feed off and gate closed Hose outlet pressure will be set according to...
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 ...
Topic: Walls Subtopic: Exterior Wall Insulation 6.7 Detail Name: Fiberglass Blown Insulation Installation (via penetrations through or behind...
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...
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...
