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US 6,637,667 B2Granted
Method and apparatus for energy recovery in an environmental control system
AssigneePentech Solutions, Inc.
InventorsDale A. Gauthier, Guy D. Covert
Life of this patent
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Abstract
Control apparatus for an environmental control system comprises input circuitry receiving environmental information and output circuitry for controlling an HVAC system. Processing circuitry in the controller configures the output circuitry based at least in part on the signals received on the input circuitry. Information about the status of the HVAC system may be transferred to system administrators using a wireless link.
Claims4
A method of controlling an HVAC system comprising:
- receiving a call for heating;
- turning on a furnace;
- monitoring the on-time of said furnace;
- sensing a controlled space temperature;
- comparing said controlled space temperature with a predetermined value;
- and
- shutting off said furnace when (1) said on-time reaches a predetermined minimum, and (2) said controlled space temperature is greater than said predetermined value.
4 more elements
Dependencies are inferred from the claim text.