Electronic programmable thermostat for a heating and cooling...

Details Electronic programmable thermostat for a heating and cooling... Electronic programmable thermostat for a heating and cooling...

G - Physics

05

D

341/27

G05D 23/19 (2006.01) G05D 23/20 (2006.01)

Patent

CA 1320749

ABSTRACT A programmable thermostat for an air conditioning system includes a sensor for sensing the ambient temperature within the predetermined volume of space, a timer for generating the current time of day, and a memory for storing a plurality of program times, and a heating and a cooling control temperature corresponding to each program time. The memory also stores a first temperature span associated with the heating control temperatures and a second temperature span associated with the cooling control temperatures. The programmable thermostat further includes a controller which selectively controls the on/off state of the air conditioning system in response to (1) a comparison of the current time of day with the program times stored in the memory to access the corresponding current heating and cooling control temperatures stored in the memory and (2) a comparison of the current ambient temperature sensed by the sensor with the current heating and cooling control temperatures stored in the memory.

614940

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