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Guardian with Smart Sense™
www.lbwhite.com
Owner’s Manual • Guardian
40
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 speci
fi
c rate.
Fan Housing
Chamber used for compressing air for ef
fi
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.
Gas Control Valve
A true variable rate device that works in conjunction
with external heating controls to effectively manage
the temperature of the con
fi
nement room. The gas
control operates from a
fi
ring rate of 25% of overall
heat output up to maximum heat.
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.
Hot Surface Igniter
Ignites gas by surface temperature rather than by
spark or
fl
ame.
Heater Component Function
Ignition Cable (Spark Ignition)
Cable used to transmit high voltage from the
ignition control module to the igniter for creation
of spark and ignition of fuel gas.
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 speci
fi
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.
Signal Conditioner
Electronic device used to control the signal
from the building controller for operation of the
heater’s variable rate gas control valve.
Spark Igniter
Ignites gas by a high voltage spark transmitted
through the ignition cable.
Transformer
Electrical control used to take higher incoming
voltage and reduce it to lower outgoing voltage to
operate certain control systems.
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