Autocycling control circuit for heating and/or air conditioning systems
First Claim
1. An autocycling control circuit means for automatically controlling the activation of a heating system comprising, in combination,(a) first and second thermostat means, said second thermostat being set at a higher temperature than said first thermostat,(b) means for continuously coupling said first thermostat means to said heating system for continually maintaining a minimum temperature in accordance with the setting of said first thermostat, and(c) programmable timer means for selectively controlling the coupling of said second thermostat to said heating system during settable, predetermined time intervals,(d) said programmable time means including a control means coupled to said second thermostat for selectively enabling and disabling said second thermostat during said predetermined time intervals in accordance with whether said second thermostat is calling for heat.
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Accused Products
Abstract
An autocycling control circuit unit is provided for controlling heating and/or airconditioning systems to provide controlled comfort and fuel savings. The unit contains a night thermostat which is continually coupled to the system for maintaining a minimum temperature level. A programmable timer enables and disables a day thermostat during settable, predetermined time intervals. The timer includes a feedback circuit for varying the on-off cycling of the day thermostat, after initial warm-up, in accordance with the rate at which the day thermostat calls for heat. The unit contains a backup battery and charger to insure the proper timing sequence in the event of system power outages.
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Citations
10 Claims
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1. An autocycling control circuit means for automatically controlling the activation of a heating system comprising, in combination,
(a) first and second thermostat means, said second thermostat being set at a higher temperature than said first thermostat, (b) means for continuously coupling said first thermostat means to said heating system for continually maintaining a minimum temperature in accordance with the setting of said first thermostat, and (c) programmable timer means for selectively controlling the coupling of said second thermostat to said heating system during settable, predetermined time intervals, (d) said programmable time means including a control means coupled to said second thermostat for selectively enabling and disabling said second thermostat during said predetermined time intervals in accordance with whether said second thermostat is calling for heat.
Specification