Fail safe automatic flue damper mechanism

Details Fail safe automatic flue damper mechanism Fail safe automatic flue damper mechanism

1985-01-14

1986-10-28

Wayner, William E.

Combustion

Timer, programmer, retarder or condition responsive control

Of or by exhaust damper or exhaust pump

236 1G, 431 21, F23N 502

Patent

active

046196021

ABSTRACT:
The present invention is an electronically controlled, automatically operated flue damper mechanism which is totally fail safe in operation. The mechanism is to be fitted within the draft hood of a thermostatically controlled heating device such as a gas or oil fired furnace. The electronic control circuitry of the damper being integrated with that of the heating device to which it is fitted. The action of the damper being to close the flue a sufficient time after combustion has stopped, to allow all noxious gases from combustion to have left the flue, and to open the flue before combustion can begin.

REFERENCES:
patent: 4102629 (1978-07-01), Feinberg
patent: 4266929 (1981-05-01), Swenson

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