Automatic temperature and humidity regulation – Closed fluid heaters – Top burner control
Patent
1985-04-08
1987-02-10
Tanner, Harry
Automatic temperature and humidity regulation
Closed fluid heaters
Top burner control
236 78R, G05D 1500
Patent
active
046417788
ABSTRACT:
An electronic water heater thermostat system for controlling the heating of water in residential and commercial water heaters, the system incorporating improved circuitry for controlling the water temperature set point and hysteresis and enabling the use of low cost, low tolerance potentiometers providing a precision voltage ratio for use in the system circuitry.
REFERENCES:
patent: 3678247 (1972-07-01), Sawa et al.
patent: 3861624 (1975-01-01), Lear
patent: 4024725 (1977-05-01), Uchida et al.
patent: 4361274 (1982-11-01), Raleigh et al.
patent: 4404462 (1983-09-01), Murray
McKinnon Malcolm R.
Robertshaw Controls Company
Tanner Harry
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