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THEORY OF
OPERATION
PROPANE
SUPPLY
102401
The Fuel System: The hose/regulator assembly attaches to the propane gas
supply. This provides fuel to the heater.
The Air System: The motor turns the fan. The fan pushes air into and around
the combustion chamber. This air is heated and provides a stream of clean, hot air.
The Ignition System: The piezo ignitor lights the burner.
The Automatic Control System: This system causes the heater to shut down
if the flame goes out.
Clean
Heated
Air Out
(Front)
Propane gas and propane tank(s) are to be furnished by the user.
Use this heater only with a propane vapor withdrawal supply system. The amount
of propane gas ready for use from propane tanks varies. Two factors decide this
amount:
1. The amount of propane gas in tank(s)
2. The temperature of tank(s)
This heater is designed to operate with a minimum 9-kg (20-pound) propane tank.
You may need two or more tanks or one larger tank in colder weather. Use a 45-kg
(100-pound) tank for longer operation or in very cold weather. Less gas is vapor-
ized at lower temperatures. Your local propane gas dealer will help you select the
proper supply system.
Average Temperature
At Tank Location
Number Of Tanks
(45 kg/100-pound)
Combustion
Chamber
Air For Combustion
Figure 2 - Cross Section Operational View
0°C
-6.7°C
(32°F)
(20°F)
1
1
Fan
Motor
Hose/Regulator
Assembly
Air For Heating
-12°C
-17.7°C -23.3°C -28.9°C
(10°F)
(0°F)
(-10°F) (-20°F)
1
1
2
Cool Air In
(Back)
2
5
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