Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
October 20, 2009
Patent Application Number
10907117
Date Filed
March 21, 2005
Patent Primary Examiner
Patent abstract
A method and apparatus for controlling a fuel-fired appliance is provided. The appliance enters a wait state in which burner operation ceases if a sensor indicates the presence of flammable vapors that are above an acceptable and/or safe vapor level. The appliance returns to a run state if the vapor level returns to an acceptable and/or safe vapor level within a period of time, but enters a lockout state if the vapor level does not return to an acceptable and/or safe vapor level within the period of time.
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