Heating and cooling thermostat set points limits set by changeov

Details Heating and cooling thermostat set points limits set by changeov Heating and cooling thermostat set points limits set by changeov

1981-03-06

1983-05-31

Makay, Albert J.

Heat exchange

With alarm, indicator, signal, register, recorder, test or...

Remotely controlled inspection means

165 27, 236 46R, 337360, 74526, F23N 520, H01H 3712

Patent

active

043856594

ABSTRACT:
A time controlled thermostat provides the setting up or setting down of space temperature during certain selected time periods depending on whether it is controlling heating or cooling apparatus as selected by a changeover lever. The normal control temperature as determined by a temperature responsive switch is set by a first selection lever and the setback temperature set by a second selection lever, during heating operation, as selected by the changeover lever the normal temperature is selected by the second selection lever and the setup temperature by the first selection lever during cooling operation as selected by the changeover lever. Limit stops are provided for limiting the position of the first lever during heating to a maximum temperature and the position of the second lever during cooling for a minimum temperature. The limits are made active by the changeover lever so that when the changeover lever is in the heating operation position, the limit for the first selection lever is made effective and when the changeover lever is in the cooling position, the limit for the second selection lever is made effective.

REFERENCES:
patent: 2558617 (1951-06-01), Kronmiller
patent: 3670284 (1972-06-01), Fortier
patent: 3807254 (1974-04-01), Brakebill
patent: 3999158 (1976-12-01), Rae
patent: 4078601 (1978-03-01), Kolbow
patent: 4249155 (1981-02-01), Fitzgerald et al.
Honeywell Brochure Form No. 60-2416-2 (Rev. 9-79), T8082A Fuel Save Thermostat.

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