Thermostat with adjustment for the cycling rate of the heating p

Details Thermostat with adjustment for the cycling rate of the heating p Thermostat with adjustment for the cycling rate of the heating p

1994-06-16

1995-11-21

Tanner, Harry B.

Automatic temperature and humidity regulation

Motors

Relay

236 10, G05D 2300

Patent

active

054679206

ABSTRACT:
An electromechanical thermostat has a fixed value voltage anticipator resistor and a variable anticipator resistor for series connection with the load. This allows a single thermostat to control either a high efficiency furnace requiring a relatively low cycle rate or a furnace of conventional efficiency which can function at a higher cycle rate. Preferably, the voltage anticipator resistor is selected to give the cycle rate required by high efficiency furnaces when the resistance of the variable anticipator resistor is set to zero ohms. If the thermostat is shipped with the variable resistor set to zero ohms, the installer will not have to adjust the variable resistor whenever the thermostat is installed in a system requiring that cycle rate.

REFERENCES:
patent: 1741601 (1929-12-01), Appelberg
patent: 2209768 (1940-07-01), Dillman
patent: 2489049 (1949-11-01), Root
patent: 2649530 (1953-08-01), Dietz
patent: 2732132 (1956-01-01), Hulett
patent: 3948438 (1976-04-01), Vlasak
patent: 4485966 (1984-12-01), Cartmell et al.
patent: 4489882 (1984-12-01), Rogers
patent: 4759498 (1988-07-01), Levine et al.
patent: 4817705 (1989-04-01), Levine et al.
patent: 4901918 (1990-02-01), Grald et al.
patent: 5002226 (1991-03-01), Nelson
patent: 5039010 (1991-08-01), Juntunen
patent: 5115968 (1992-05-01), Grald

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