| 5.3002.7a
Location | Equipment will be installed in a dry location within the conditioned space when feasible Equipment will be properly isolated from pollutant sources (e.g., garages) Equipment will be installed in a manner to provide ease of access for routine maintenance/service All work will be done by a licensed professional or qualified person | Prevent rust and corrosion Protect equipment from bulk water and moisture Prevent exposure to garage air pollutants Ensure that equipment is maintained/serviced |
| 5.3002.7b
Clearance | Equipment will be installed with proper clearances in accordance with local codes and manufacturer specifications Alternative locations will be considered for equipment when existing locations are not suitable | Ensure equipment has proper clearances for fire risk and accessibility Ensure equipment operates as designed |
| 5.3002.7c
Connections | Equipment will be installed so connections allow proper operation of the equipment and accessibility (e.g., electrical service, condensation drains, ductwork, fuel, venting, refrigerant lines) Equipment will be installed so the drain pan operates properly | Ensure connections do not interfere with the operation and service of the equipment |
| 5.3002.7d
Support: horizontal air flow, attic | Equipment will be supported with a nonwicking fireproof platform or suspended with a threaded rod in accordance with local codes and manufacturer specifications Equipment will be placed on vibration pads | Ensure equipment is stable, level, and does not transmit vibration Avoid compressing or disturbing attic insulation |
| 5.3002.7e
Support: horizontal air flow, basement, or crawl space | Equipment will be supported with a nonwicking, fireproof material or suspended with a threaded rod in accordance with local codes and manufacturer specifications Equipment will be placed on vibration pads | Ensure equipment is stable, level, and does not transmit vibration Avoid compressing or disturbing insulation |
| 5.3002.7f
Support: up flow on a platform | Equipment will be supported on nonflammable material capable of supporting the weight of the equipment Air handler opening will be free of obstructions Equipment will be placed on vibration pads | Properly support the equipment Prevent a fire hazard Ensure platform does not impede air flow |
| 5.3002.7g
Support: down flow | Equipment will be supported on ductwork capable of supporting the weight of the equipment Equipment will be supported on ductwork with rigid exterior insulation fastened to the ductwork | Properly support equipment Protect equipment from moisture damage Reduce heat loss |
| 5.3002.7h
Sealing | Gaps larger than 1/4" between air handler and adjoining ductwork or equipment (e.g., evaporator coil, filter rack) will be bridged with sheet metal, and sealed with mastic and fiberglass mesh All air handler joints will be sealed with mastic and fiberglass mesh Air handler joints and non-service openings will be sealed to eliminate all gaps with
NFPA
NFPA
National Fire Protection Association, www.nfpa.org
90A and B approved sealant If unit is installed in a building cavity, the cavity must be sealed prior to the installation to eliminate any return air leaks from adjoining chases | Ensure air handler does not leak air Ensure the sealing is durable Prevent increased resistance to air flow |
| 5.3002.7i
Drainage | A secondary drain pan and drain line that provides proper pitch and a float switch will be installed beneath equipment located in areas where water damage may occur, such as attics and conditioned spaces Float switch will be interlocked with the cooling circuit to disable AC when leak occurs | Prevent water damage |
