Gas water heater

  • US 8,375,897 B2
  • Filed: 11/23/2009
  • Issued: 02/19/2013
  • Est. Priority Date: 08/16/2006
  • Status: Active Grant
First Claim
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1. A method of interfacing a natural convection vent construction with a water heater, the method comprising:

  • providing a water heater having a burner, a blower, and a flue;

    creating products of combustion with the burner;

    forcing the products of combustion into the flue under positive pressure with the blower;

    interposing an exhaust plenum between the flue and the natural convection vent construction;

    dropping the pressure of the products of combustion to near atmospheric pressure within the plenum; and

    permitting the products of combustion to rise out of the plenum and into the natural convection vent construction substantially entirely under the influence of natural convection;

    wherein the natural convection vent construction includes a draft hood, the method further comprising mixing ambient air with the products of combustion as the products of combustion flow into the draft hood.

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