Automatic temperature and humidity regulation – Hot-air furnace – Air and fire control
Patent
1990-02-09
1990-12-11
Wayner, William E.
Automatic temperature and humidity regulation
Hot-air furnace
Air and fire control
236 1EB, G05D 2300
Patent
active
049764594
ABSTRACT:
The present invention involves a two stage furnace and a method of warming its heat exchanger. The furnace includes a gas valve with low and high combustion settings, and inducer and circulator fans with low and high speed settings. When a call for heat is present, the inducer fan and gas valve operate at high. After a heat on delay period, the circulator fan operates at low speed to provide an initial warm stream of air from the furnace.
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Inter-City Products Corporation (USA)
Wayner William E.
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