Self contained heating/cooling roof top unit with built in...

Details Self contained heating/cooling roof top unit with built in... Self contained heating/cooling roof top unit with built in...

F - Mech Eng,Light,Heat,Weapons

24

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F24F 13/20 (2006.01) F24F 3/00 (2006.01) F24F 13/32 (2006.01)

Patent

CA 2578458

A self-contained pre-manufactured roof top unit is used to circulate fresh air, heat or cool a building. The housing has a blower connected into a circulation system to circulate air into and out of the building. The unit has a pressure relief opening for connection into the building that is used to relieve air pressure buildup within the building. The pressure relief opening is part of a pressure relief passage that is independent of the blower and has an exhaust vent that opens and closes automatically in response to pressure differential between the building and ambient air.

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