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Heater Component Function
Burner
Cast iron component used to channel gas and provide an
area at which the fuel may ignite.
Burner Orifice
Brass metering device used to feed gas to burner at a
specific rate.
Fan
Component used in conjunction with the motor to pull the
hot air from heater and blow it into room for heating.
Gas Hose
Flexible connector used to convey gas from supply line in
building to heater.
Motor
Electric device used to force preheated air through the
heater and to circulate heat within a certain area. Converts
electrical energy into mechanical energy.
Pilot Light Orifice
A metering device used to supply gas for the dual purpose of
igniting the main burner and heating the thermocouple.
Pilot Safety Control Valve
A gas control valve which is held open by electrical power
supplied by a pilot generator and which closes automatically
to shut off the flow of gas to the main burner when the pilot
flame is extinguished or becomes too small to light the main
burner.
Pilot Tube
Formed copper tube used to convey gas from the safety
control valve to the pilot light orifice. The tube is internally
“tinned” when natural gas is used to resist the effects of
sulphur in the fuel.
Regulator
The heart of any gas supply installation. Used to deliver a
working pressure to the appliance under varying conditions
in tank pressure.
Solenoid Valve
Electromagnet which when energized by electrical current
opens and allows gas to pass through to the burner for
ignition.
Thermocouple
A thermoelectric device that converts heat energy directly
into electrical energy. Works in conjunction with the
electromagnet in the gas control valve thereby providing gas
supply for the pilot light.
Thermostat
Electrical device used as an automatic “on/off” switch
which will respond to changes in temperature in a certain
area. Can be wired so contacts in the thermostat open or
close on temperature increase or decrease.
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