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COMBUSTION BLOWER CONTROL FOR MODULATING FURNACE

  • US 20080213710A1
  • Filed: 05/19/2008
  • Published: 09/04/2008
  • Est. Priority Date: 10/18/2006
  • Status: Active Grant
First Claim
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1. A forced air furnace comprising:

  • a burner;

    a pneumatically modulated gas valve configured to provide gas to the burner;

    a combustion blower in fluid communication with the burner; and

    a pneumatic sampling device disposed proximate the combustion blower, the pneumatic sampling device configured to provide the pneumatically modulated gas valve with a first pneumatic signal and a second pneumatic signal, the first and second pneumatic signals representative of fluid flow through the pneumatic sampling device, the pneumatically modulated gas valve regulating gas flow in accordance with the first and second pneumatic signals.

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