Heater Component Function - L.B.White Guardian AW060 Manual De Instrucciones

Heater Component Function

Air Proving Switch
Safety device used to insure that the proper air fl ow
is being achieved before the gas valve is opened.
Burner
Cast iron component used to channel gas and
provide an area at which the fuel may ignite.
Burner Orifi ce
Brass metering device used to feed gas to burner
at a specifi c rate.
Fan Housing
Chamber used for compressing air for effi cient air
movement.
Fan Wheel
Component used in conjunction with the motor and
fan housing to pull the hot air from heater and blow
it into room for heating (also known as a squirrel
cage).
Flame Sensor
Also known as a fl ame rod or fl ame probe, this de-
vice works in conjunction with the ignition module
in proving that burner fl ame has been established.
Flapper
A sail located in the blower outlet that lifts on an
increase in air pressure generated by the fan &
motor. Assists in establishing that proper air fl ow is
achieved before ignition occurs.
Gas Control Valve
A device which consists of a low pressure regula-
tor and electrical solenoids which are used for
the control of gas fl ow to the burner assembly. A
feature of the control is a built in gas shut off which
is used to isolate the heater from its gas supply
when servicing.
Gas Hose
Flexible connector used to convey gas from supply
line in building to heater.
Heat Chamber
Metal fi re box within the appliance that provides an
area where burner fl ame mixes with combustion air
thereby providing heat.
High Limit Switch
Safety device wired into the control system which is
used to break an electrical circuit to the gas control
valve in event of overheat situation.
Guardian LP or Natural Gas Heater
Hot Surface Igniter
Electrical ignition device used on automatic
ignition control systems. Ignites gas by surface
temperature rather than by spark or fl ame.
Ignition Control Module
Controls the ignition sequence and operation
of the heater as well as monitoring the safety
sevices. A major service feature is the board's
ability to diagnose component and fl ame failure
by means of a diagnostic light located within the
module. This light will provide a specifi c fl ash
pattern repetitively, depending on the type of
componenet failure that has occurred.
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.
Regulator
The heart of any gas supply installation. Used to
deliver a working pressure to the heater under
varying conditions in tank pressure.
Relay (Used on AW325)
Connected between the ignition control and mo-
tor, the relay is used to supply a total of 220 volts
to the fan motor on receipt of 115 volts from the
ignition control.
Thermostat
Electrical device used as an automatic on/off
switch which will respond to changes in tempera-
ture in a certain area. Can be wired so contacts
in the thermostat open or close on temperature
increase or decrease.
Throttle Valve
Manually adjustable component used to increase
or decrease the fl ow of gas to the burner. The
throttle valve is located between the gas control
valve and burner assembly.
Transformer
This device is responsible for reducing a higher
incoming voltage (normally 120 V.A.C.) to a
lower outgoing voltage. The lower voltage (24
V.A.C.) is essential to operate the ignition control
module.
Owner's Manual • Guardian
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