Self contained heating/cooling roof top unit with two-stage...

Details Self contained heating/cooling roof top unit with two-stage... Self contained heating/cooling roof top unit with two-stage...

F - Mech Eng,Light,Heat,Weapons

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F24F 1/06 (2011.01) F24F 1/60 (2011.01) F24F 1/02 (2011.01) F24F 7/08 (2006.01)

Patent

CA 2720749

A self-contained air unit for installation on a roof top of a building has a pressure relief opening that is independent of the air circulation system of the unit. The air circulation system has a first blower and the pressure relief opening has a damper system that connects the pressure relief opening to ambient air through two passages. One of the passages contains a second blower to exhaust air from the air circulation system and from the independent pressure relief opening simultaneously. A two-stage pressure relief hood is provided for use with a self-contained air unit.

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