MAU Installation Manual
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SYSTEM INSTALLATION WARNINGS
1. This system is not designed to provide combustion air for fuel- burning appliances.
2. Do not connect the system directly to a combustion appliance of any type.
3. Do not locate outside air inlet near hazardous materials or explosives.
4. System shall not be installed to introduce air from crawlspaces, garages, attics, adjacent
dwelling units, or other locations within the building shell. System shall be installed to bring in
fresh air directly from outdoors.
5. Do not install the MAU and supply ductwork directly above or closer than 36 inches to any
furnace or its supply plenum, boiler, or other heat producing appliance.
6. Any ductwork used in conjunction with the system must be installed in compliance with all
applicable local and national codes.
7. Do not operate the MAU until the filters have been installed.
8. The MAU must be installed in an accessible location which allows for regular inspection and
maintenance.
9. The HVAC designer/contractor must take into consideration the effects that the supply of
outdoor air by the MAU will have on the building’s comfort and mechanical systems. The HVAC
designer should know the makeup air system's frequency and duration of use as well as the cfm
of outdoor air coming into the building.
10. Do not supply outdoor air to a space or duct where water pipes or water coils could possibly
freeze.
11. Locate the outside air inlet hood above any anticipated snow drift level and away from any
architectural and landscape features to ensure that the intake area for the outside air duct is
never blocked and provides a clear pathway for the incoming air.
12. When federal, or state legislation comprises more restrictive installation and/or certification
requirements, these requirements prevail over those in this document and the installer must
conform to these at his own expense.
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