5
103911
Air For Combustion
Air For Heating
THEORY OF
OPERATION
Combustion
Chamber
Clean
Heated
Air Out
(Front)
Hose/Regulator
Assembly
Cool Air In
(Back)
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.
Motor
Fan
Figure 2 - Cross Section Operational View
PROPANE
SUPPLY
Propane gas and propane tank(s) are to be furnished by the user.
Use this heater only with a propane vapor withdrawal supply system. See Chapter 5
of the Standard for Storage and Handling of Liquefied Petroleum Gas, ANSI/NFPA
58 and or CAN/CGA B149.2. Your local library or fire department will have this
booklet.
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 20-pound (9 kg) propane tank.
You may need two or more tanks or one larger tank in colder weather. Use a 100-
pound (45 kg) tank for longer operation or in very cold weather. Less gas is
vaporized at lower temperatures. Your local propane gas dealer will help you select
the proper supply system. The minimum surrounding air temperature rating for
each heater is -20°F (-29°C).
Average Temperature °F (°C)
At Tank Location
40(4.4) 32(0) 20(6.7) 10(-12) 0(-18) -10(-23) -20(-29)
Number Of Tanks
(100-pound/45 kg)
1
1
1
1
1
2
2
