Specifications

21
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The control circuit for a Flame Guard® water heater is
similar to a standard gas water heater. The main
dierence is the addion of a reseable thermal cuto
switch to the thermocouple circuit.
If ammable vapors are ignited they will trigger the
thermal switch, cung o the gas supply to the pilot and
burner. This prevents the vapors from being reignited
aer they have self-exnguished.
Insucient combuson air supply or blocked venlaon
can also acvate the thermal cuto switch. When these
condions have been corrected, the thermal switch can
be reset.
Gas Water Heater Operation