Liquid heaters and vaporizers – Stand boiler – And condition responsive feature
Reexamination Certificate
2005-10-25
2005-10-25
Lu, Jiping (Department: 3749)
Liquid heaters and vaporizers
Stand boiler
And condition responsive feature
C122S014210, C122S504000, C122S504100, C122S504300, C431S021000, C431S077000, C431S078000, C200S061080, C337S405000
Reexamination Certificate
active
06957628
ABSTRACT:
A gas-fired water heater is provided with a combustion shutoff system which precludes further combustion within the water heater's combustion chamber in response to a combustion temperature therein reaching a predetermined level correlated to and indicative of a predetermined, undesirably high concentration of carbon monoxide present in the combustion chamber. In various illustrated embodiments thereof, the combustion shutoff system is operative to terminate further combustion air inflow to the combustion chamber, or terminate further fuel flow to the burner portion of the water heater.
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Campbell James T.
Doss Garrett
Elder Gary A.
Gordon Michael W.
Hotton Bruce A.
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Lu Jiping
The Water Heater Industry Joint Research and Development Consort
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