Interlock and forced air furnace and HRV

Details Interlock and forced air furnace and HRV Interlock and forced air furnace and HRV

1994-01-26

1995-07-18

Wayner, William E.

Automatic temperature and humidity regulation

Hot-air furnace

Air and fire control

165 16, 454239, F24D 500

Patent

active

054333776

ABSTRACT:
An electrical interlock ties a heat recover ventilator to circulation air blower operation of an associated forced-air furnace or air conditioning system. This ensure that the blower circulates supply and return air within the building or dwelling. An interlock relay has its coil energized by the heat recovery ventilator, and a normally open contact tied to the control of a blower of the forced-air system. The furnace or air conditioner and the ventilator are operated by separate controls located within the building's comfort space. When the ventilator is operated, the circulation blower runs continuously, but thermostat actuate of the furnace or air conditioner above will not operate the ventilator.

REFERENCES:
patent: 4044950 (1977-08-01), Engeling et al.
patent: 4175699 (1979-11-01), Engeling et al.
patent: 4293094 (1981-10-01), McGillis
patent: 4408716 (1983-10-01), Rockwell
patent: 4477019 (1984-10-01), Breitbach
patent: 5046478 (1991-09-01), Clawson
patent: 5183098 (1993-02-01), Chagnot
patent: 5224650 (1993-07-01), Gozikowski
patent: 5257736 (1993-11-01), Roy

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