Modulating burner system
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United States of America Patent
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Dec 27, 2016
Grant Date -
May 8, 2014
app pub date -
Oct 28, 2013
filing date -
Nov 5, 2012
priority date (Note) -
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Abstract
A modulating burner system includes a speed control responsive to inputs received from a thermostat. The speed control modulating a blower which provides combustion air and a vacuum proportional to the speed of the blower. The modulating burner system further includes a gas amplifying valve in communication with the vacuum via a vacuum conduit. The gas amplifying valve providing modulated combustion gas responsive to the vacuum; wherein modulated combustion air and gas communicated to a burner for continuously variable firing rates of 50 to 100% of the maximum firing rate. The modulating burner system further includes control circuit dampers for smoothing out vacuum spikes and fluctuations.
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