Control system for space heater/hearth
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United States of America Patent
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Jun 23, 2015
Grant Date -
Aug 22, 2013
app pub date -
Feb 19, 2013
filing date -
Feb 16, 2012
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A fuel burning space or zone heating appliance or heater rated or decorative fireplace (hearth appliance) and a method of operating a heater including a gas valve, a pressure transducer, a second pressure measurement device, a combustion fan, and a control. The control compares the signal from the pressure transducer to the signal from the second pressure measurement device. If the signals do not sufficiently correspond, the control prevents the gas valve from opening. If the signals sufficiently correspond, the control performs an ignition sequence and opens the gas valve. The control also compares the signal from the pressure transducer to a desired value based on a current input gas rate through the gas valve. If the signal is greater than the desired value, the control decreases power to the combustion fan. If the signal is less than the desired value, the control increases power to the combustion fan. If the signal is less than the desired value, the control turns the gas valve off to cease ignition.
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Family
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