375,000 BTU/HR - A SERIES
PROPANE CONSTRUCTION HEATER
THEORY OF OPERATION
PROPANE SUPPLY
The Fuel System: The hose/regulator assembly attaches to the propane gas sup- ply. 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 sys- tem causes the heater to shut down if the flame goes out. The motor will continue to run, but no heat is produced.
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 the Propane Installation Code CAN/ CGA B149.2. Your local library or fire de- partment will have these booklets.
CombustionIgnitor
Chamber
Fan
Clean Heated Air Out (Front)
Motor
The amount of propane gas ready for use from propane tanks varies. Two factors de- cide this amount:
1.The amount of propane gas in tank(s)
2.The temperature of tank(s)
The chart below shows the number of 100- pound tanks needed to run this heater.
|
| Cool Air |
|
| In (Back) |
|
| Power |
|
| Cord |
DSI |
|
|
Nozzle | Solenoid |
|
| Valve | Hose/Regulator |
Air For Combustion | Air For Heating | Assembly |
Figure 2 - Cross Section Operational View
Do not operate this product with any tank smaller than 100 pounds.
Temperature (°F) At Tank
| 40° | 32° 20° 0° |
|
|
|
Number | 3 | (Use larger tank below |
of tanks |
| 40°F) |
|
|
|
Less gas is vaporized at lower temperatures. You may need a larger tank in colder weather. Your local propane gas dealer will help you select the proper supply system. The mini- mum surrounding 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 pro- vided, carbon monoxide poison- ing can occur. Provide proper fresh, outside air ventilation be- fore running heater.
Provide at least three square feet of fresh, outside air for each 100,000 Btu/Hr of rat- ing. This heater requires a fresh air opening of at least 11.25 square feet. Provide extra fresh air if more heaters are being used.
4 | 100416 |
