Furnace controller and a furnace that controls a gas input rate to maintain a discharge air temperature
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United States of America Patent
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Feb 23, 2021
Grant Date -
Aug 3, 2017
app pub date -
Apr 13, 2017
filing date -
Sep 6, 2012
priority date (Note) -
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Abstract
Provided herein are embodiments of, a multistage gas furnace, a controller therefor and a computer-usable medium having non-transitory computer readable instructions stored thereon for execution by a processor to perform a method for operating a gas furnace. In one embodiment, the gas furnace includes: (1) a burner, (2) a circulation fan and (3) a furnace controller. The furnace controller having: (3A) an interface configured to receive heating calls and a blower control signal, the blower control signal corresponding to an operating speed of the circulation fan and (3B) a processor configured to respond to the heating calls and the blower control signal by setting and adjusting a gas input rate for the burner that is based on the blower control signal and that corresponds to a discharge air temperature determined by a dedicated discharge air sensor associated with the furnace.
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