Flue damper control system

Details Flue damper control system Flue damper control system

1984-10-24

1986-02-18

Tanner, Harry

Automatic temperature and humidity regulation

Miscellaneous

Burner controls with automatic cutoff

126285B, 318436, F23L 1100

Patent

active

045708479

ABSTRACT:
A control system is provided for controlling a flue damper in a furnace flue. The control system includes a voltage source, a thermostat, a gas valve, and means for moving the flue damper between a closed position and an open position. The moving means includes a timer driven by a motor with a specially wound coil assembly including a first winding and a second winding. The coil assembly further includes a first terminal, a second terminal and a center tap terminal. The control system manipulates the flue damper and heating system during three stages of operation. The flue damper is closed and the furnace is off at the beginning of stage one. The control system opens the flue and turns on the furnace during stage one. The flue damper remains open during stage two. The control system turns off the furnace and closes the flue damper during stage three.

REFERENCES:
patent: 2155642 (1939-04-01), Dewey
patent: 3914676 (1975-10-01), Madonian et al.
patent: 4185770 (1980-01-01), Nagel
patent: 4239477 (1980-12-01), Hayes
patent: 4299554 (1981-11-01), Williams

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