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I-3 Radiant Heater
Owner’s Manual • I-3
25
Burner Orifice
Metering device used to feed gas to combustion
cones at a specific flow rate.
Shroud
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.
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.
Heater Component Function
Manual Shut Off Valve
It’s purpose is to shut off gas flow to the heater
if maintenance or service are required, or if an
emergency situation occurs. When the handle on
the manual valve is turned parallel to gas flow, the
valve is completely open delivering full gas supply
to the appliance. Turning handle
perpendicular (90°) to gas flow shuts off gas flow.
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 will continue to hold open elec
-
tromagnet in safety gas control valve when heat is
applied to thermocouple tip. It will also stop gas flow
if inner combustion flame is out.
Thermostatic Head and Sensor Assembly
Device used to cycle the heater from low to high
heat and to maintain a specific temperature.