L.B. White Tradesman 400 Dual Fuel, Инструкция и руководство пользователя, Страница: 33 / 120

Tradesman Construction Heaters
Owner’s Manual • Tradesman
33
Air Proving Switch (All Tradesman 400
& Tradesman 170 Ultra)
Safety device used to insure that the proper air fl ow
is being achieved before the gas valve is opened.
Back Flash 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.
Burner Orifi ce
Brass metering device used to feed gas to burner
at a speci
fi c rate.
Combustion Chamber
Metal chamber within the heater that provides an
area where burner gas mixes with combustion air,
thereby providing heat.
Direct Spark Ignition Control Module
Electronic printed circuit board which sends and
receives voltages to various controls in an auto-
matic ignition system. An important safety feature
of the control board is that it will shut down the
entire heater, thereby stopping the
fl ow of fuel gas
if burner fl ame goes out.
Fan
Component used in conjunction with the motor to
pull the fresh air into the heater and blow it into
room for heating
Gas Control Solenoid Valve
House an electromagnet which is energized by
voltage and opens to allow passage of gas to the
burner ori
fi ce.
Gas Selector Valve
(Tradesman 400 Dual Fuel only)
A manually positioned valve that allows easy gas
conversion depending on gas being supplied at
job site. Eliminates the need for change out of the
burner ori
fi ce.
Heater Component Function
Gas Hose
Flexible connector used to convey gas from sup-
ply line in building to heater.
Igniter
Ignition device used on automatic direct spark
ignition control systems. Ignites gas by spark.
Igniter Wire
Cable used to provide high voltage to the igniter
and also a pathway for
fl ame sense current.
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
Mechanical device used in gas distribution sys-
tems to reduce a higher inlet pressure to a preset
lower pressure. The regulator is responsible to
supply a steady outlet pressure to the heater(s)
despite changes in inlet pressure, heater
demand and weather conditions.
Thermostat
Electrical device used as an automatic “on/off”
switch which will respond to changes in tempera-
ture in a certain area.