Heater Component Function - L.B. White I3 Owner's Manual And Instructions

Main Burner Orifice
Metering device used to feed gas to combustion cones over
the full range of heat output.
Bypass Orifice
Metering device used to feed gas to combustion cones at
the low heat setting of the individual control valve.
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.
Individual Control Valve
Allows manual heat adjustment from a minimum heat
output ( 600-800 btuh) to maximum heat output (2800
btuh).

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.
Shroud
Reflective aluminum heat shield for heater.
Thermocouple
Safety device that will continue to hold open 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.
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 injector tube.
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