Patent ID: 6904873
Filing Date: 2005-06-14
Classification: F23K,F23N

Abstract:
1. A fuel-fired heating appliance comprising: fuel burner apparatus having an inlet portion; pressure regulator apparatus having an outlet portion coupled to said inlet portion of said fuel burner apparatus, and a predetermined pressure regulation setting; and fuel delivery apparatus coupled to said pressure regulator apparatus inlet portion and operative to deliver thereto a selectively variable one of (1) a first fuel, from a source thereof, at a pressure greater than said predetermined pressure regulation setting, and (2) a second fuel at a pressure lower than said predetermined pressure regulation setting, said pressure regulator apparatus regulating the pressure of fuel discharged from its outlet portion only with respect to said first fuel, said pressure regulator apparatus and said fuel delivery apparatus being coupled in a manner precluding said pressure regulation setting from being affected by which of said first and second fuels is being delivered to said pressure regulator apparatus.