Vapor resistant fuel burning appliance

Details Vapor resistant fuel burning appliance Vapor resistant fuel burning appliance

2005-03-21

2009-10-20

Price, Carl D (Department: 3749)

Combustion

Timer, programmer, retarder or condition responsive control

By sensing of gas leakage, flashback or escaped flame

C431S006000, C431S018000, C340S632000, C122S014210

Reexamination Certificate

active

07604478

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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http://www.contractormag.com/articles
ewsarticle.cfm?newsid=89, CONTRACTORmag.com, “Water Heater Double Whammy,” 4 pages, printed Mar. 17, 2004.

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