Heater Component Function - L.B.White I-40 Manual De Usuario

Manual Ignition Heaters

Heater Component Function

Air Housing
Secures safety control valve to venturi tube.
Also allows combustion air to be drawn in to
injector tube with gas fl ow for combustion.
Burner Orifi ces
Metering devices used to feed gas to combus-
tion cones at a specifi c fl ow rate.
Canopy
Refl ective aluminum heat shield for heater.
Double Combustion Chamber
Made of stainless steel. This is where combus-
tion of gas occurs, providing radiant heat used
in the warming process.
Gas Hose
Flexible connector used to convey gas from
gas supply line to inlet of heater.
Safety Control Valve
Safety shut off device used to feed fuel gas to
the heater combustion cones for heating. Will
shut off fl ow of gas completely if gas fl ame
is extinguished. Works in conjuction with the
thermocouple. If the thermocouple's auto reset
temperature switch opens, the magnet internal
to the safety control valve closes, shutting off
all gas fl ow in the heater.
I-40 Manual and Spark Ignition
Thermocouple
Safety device that holds the electromagnet
in safety gas control valve open when heat is
applied to thermocouple tip. It will also stop
gas fl ow if inner combustion fl ame is out. The
thermocouple also includes an auto reset tem-
perature switch. This safety device will close
the safety control valve if temperature at the air
housing abnormally increases.
Thermostatic Head and Sensor
Assembly
Device used to cycle the heater and to maintain
a specifi c temperature. Used on modulating
zone panels and individual control heaters only.
Venturi Tube
Tubular steel neck connecting the gas control
valve and burner orifi ces to the combustion
cones. Gas is fed to the combustion cones
through the venturi tube.
Owner's Manual • I-40
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