System and methods for controlling a water heater

Details System and methods for controlling a water heater System and methods for controlling a water heater

2007-11-06

2007-11-06

Wilson, Gregory (Department: 3749)

Liquid heaters and vaporizers

Stand boiler

And condition responsive feature

C122S014210

Reexamination Certificate

active

11052307

ABSTRACT:
A control for a water heater is provided that comprises a pressure switch for sensing a predetermined level of airflow sufficient for maintaining proper burner operation, and a temperature sensing means for sensing the temperature of the water in the tank. The control further comprises a processor for controlling the operation of the burner to maintain the water temperature above a predetermined value. When the processor receives a signal from the pressure switch indicating an insufficient level of airflow, the processor shuts down the burner and subsequently attempts to restart the burner. The processor will also lock-out further burner operation after a predetermined number of consecutive shut downs occurs before the water is heated to a desired temperature during a single call for heating.

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patent: 7032543 (2006-04-01), Akkala et al.

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