Heater Component Function
Burner Orifice
Metering device used to feed gas to combustion cones at a
specific flow rate.
Double Combustion Chamber
Made of special alloy steel. This is where combustion of gas
occurs, providing radiant heat used in the warming process.
Gas Control Valve
Component that houses electromagnet which is energized by
voltage and therefore opens or closes to supply or shut off
the flow of gas to the burner.
Gas Hose
Flexible connector used to convey gas from gas supply line
to inlet of heater.
High Limit Switch
Safety device wired into the heater’s electrical supply which
is used to open the electrical circuit to the ignition control
module in the event of an overheat condition.
Igniter
Electrical ignition device used on automatic ignition control
systems. Ignites gas by spark.
Ignition Control Module
Electronic device which controls the ignition sequence and
operation of the heater.
Injector Body
Allows combustion air to be drawn in to injector tube with
gas flow for combustion.
Injector 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.
Manual Shut Off Valve
It’s purpose is to shut off gas flow to the appliance 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.
On/Off Switch
Simple electrical device used to connect or disconnect
incoming voltage at the ignition control box on the heater.
Shroud
Reflective aluminum heat shield for heater.
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Summary of Contents for I17
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