Heating and airconditioning control system

Details Heating and airconditioning control system Heating and airconditioning control system

1989-01-13

1990-08-14

Wayner, William E.

Automatic temperature and humidity regulation

Distance-adjusted

236 1R, G05D 2300

Patent

active

049480456

ABSTRACT:
The invention is directed to an electronic control apparatus which will shut off a heating or airconditioning system when a door or window is opened. The apparatus provides a magnetic switch and transmitter attached to a door or window which will emit an infrared or sonic signal when the door or window is opened. The signal is received by an infrared or sonic receiving means which shuts off the thermostat from operating for at least three minutes to prevent damage to the heating or cooling system, in particular the compressor.

REFERENCES:
patent: 3653589 (1972-04-01), McGrath
patent: 3729735 (1973-04-01), Dageford
patent: 4391406 (1983-07-01), Fried
patent: 4391913 (1983-07-01), Keldmann
patent: 4462540 (1984-07-01), Dytch

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