Intelligent setpoint changeover for a programmable thermostat

Details Intelligent setpoint changeover for a programmable thermostat Intelligent setpoint changeover for a programmable thermostat

G - Physics

05

D

G05D 23/19 (2006.01) F24F 11/00 (2006.01) H05B 1/02 (2006.01)

Patent

CA 2082308

INTELLIGENT SETPOINT CHANGEOVER FOR A PROGRAMMABLE THERMOSTAT ABSTRACT OF THE DISCLOSURE An apparatus to match initiation of temperature changeover settings of a thermostat to a duty cycle of an air temperature conditioning plant without degrading the comfort level of the area of temperature modification. The apparatus prevents short-cycling of either a heating or a cooling system which can occur due to changes in the setpoint temperature. Apparatus operates by determining the length of time of "on" portion and "off" portion of the duty cycle of the air temperature conditioning plant. It then determines the time until the upcoming cycle of the temperature conditioning plant and either advances or delays the temperature changeover until the beginning of the upcoming "on" period or the upcoming "off"period of the upcoming duty cycle, or the last "on" period or the last "off" period of the last duty cycle of the air temperature conditioning plant.

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