THEORY OF OPERATION
The Fuel System: The hose/regulator assembly attaches to the propane gas supply. The propane gas moves through the solenoid 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 direct spark ignitor (DSI) sends voltage to the ignitor. The ignitor ignites the fuel and air mixture.
The Safety Control System: This system causes the heater to shut down if the flame goes out. The motor will continue to run, but no heat is produced.
Clean Heated 
Air Out (Front)
Combustion Chamber | Ignitor |
Fan Motor
Cool Air In (Back)
DSI | Power Cord |
|
Air For Combustion |
|
Air For Heating | Nozzle |
| |
| Air For Combustion |
Solenoid Valve | Hose/ |
Regulator | |
Air For Heating | Assembly |
|
Figure 2 - Cross Section Operational View
PROPANE SUPPLY
Propane/LP gas and propane/LP tank(s) are to be furnished by the user.
Use this heater only with a propane/LP vapor withdrawal supply system. See Chapter 5 of the Standard for Storage and Handling of Liquefied Petroleum Gas, ANSI/NFPA 58 and the Propane Installation Code CAN/CGA B149.2. Your lo- cal library or fire department will have these booklets.
The amount of propane/LP gas ready for use from propane/LP tanks varies. Two factors decide this amount:
1.The amount of propane/LP gas in the tank(s)
2.The temperature of tank(s)
The chart below shows the number of
Do not operate this product with any tank smaller than 100 pounds.
Temperature | Number |
at tank location | of tanks |
40° F (5° C) and above | 2 |
Below 40° F (5° C) | (Use larger tank) |
Less gas is vaporized at lower temperatures. You may need a larger tank in colder weather. Your local propane/LP gas dealer will help you select the proper supply system. The minimum sur- rounding air temperature rating for each heater is
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 three square feet for each 100,000 Btu/Hr (105,500 k/j) rating. This heater requires a fresh air opening of at least
11.25square feet (1.05 m2). Provide extra fresh air if more heaters are being used.
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