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103908-01E4
Air For Combustion
And Heating
Fuel
THEORY OF OPERATION
The Fuel System: The hose/regulator assembly attaches to the propane gas supply. The propane gas
moves through the automatic control valve and out the nozzle.
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 spark transformer ignitor lights the main burner.
The Safety Control System: This system causes the heater to shut down if the flame goes out.
VENTILATION
WARNING: Follow the mini-
mum fresh, outside air ventila-
tion requirements. If proper
fresh, outside air ventilation is
not provided, carbon monoxide
poisoning can occur. Provide
proper fresh, outside air ventila-
tion before running heater.
Provide a fresh air opening of at least 3 ft
2
(0.28 m
2
)
for each 100,000 Btu/Hr rating. Provide extra fresh
air if more heaters are being used.
INSTALLATION
WARNING: Review and un-
derstand the warnings in the
Safety Information section, page
2. They are needed to safely op
-
erate this heater. Follow all local
codes when using this heater.
Note: Some parts are located
differently on some models.
Figure 2 - Cross Section Operational View
Clean
Heated
Air Out
(Front)
Combustion Chamber
Hose/Regulator
Assembly
Nozzle
Fan
Cool
Air In
(Back)
Power Cord
Air for
Combustion
and Heating
Fuel
WARNING: Test all gas piping
and connections for leaks after
installation or servicing. Never
use an open flame to check for
a leak. Apply a mixture of liquid
soap and water to all joints.
Bubbles forming show a leak.
Correct all leaks at once.
1. Provide propane supply system (see Propane
Supply, page 3).
2. Connect fuel gas connector fitting on hose/
regulator assembly to propane tank(s). Turn
counterclockwise into threads on tank valve.
Tighten firmly using wrench. IMPORTANT:
Tighten regulator with vent pointing down.
Pointing vent down protects regulator from
weather damage.
3. Connect hose to inlet connector. Tighten
firmly using a wrench. IMPORTANT: Extra
hose or piping may be used if needed. Install
extra hose or piping between hose/regulator
assembly and propane tank. You must use the
regulator supplied with heater.
4. Open propane supply valve on propane tank(s)
slowly.
Note: If not opened slowly, excess-
flow check valve on propane tank will stop
gas flow. If this happens, close propane supply
valve and open again slowly.