Heater Component Function - L.B. White I17 Owner's Manual And Instructions

Air Housing
Secures safety control valve to venturi tube. Also allows
combustion air to be drawn in to injector tube with gas flow
for combustion.
Burner Orifices
Metering devices used to feed gas to combustion cones at a
specific flow rate.
Canopy
Reflective aluminum heat shield for heater.
Double Combustion Chamber
Made of special alloy steel. This is where combustion 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.

Heater Component Function

Safety Control Valve
Safety shut off device used to feed fuel gas to the heater
combustion cones for heating. Will shut off flow of gas
completely if gas flame is extinguished.
Thermocouple
Safety device that holds open the electromagnet in safety
gas control valve when heat is applied to thermocouple tip.
It will also stop gas flow if inner combustion flame is out.
The thermocouple also includes an auto reset temperature
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 specific
temperature. Used on modulating zone panels and
individual control heaters only.
Venturi Tube
Tubular steel neck connecting the gas control valve and
burner orifices to the combustion cones. Gas is fed to the
combustion cones through the venturi tube.
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