Desa BLP155AT owner manual Theory Of, Operation, Supply, Propane

THEORY OF	The Fuel System: The hose/regulator assembly attaches to the propane gas
OPERATION	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.

Combustion	Fan
Chamber

Motor

Clean Heated

Air Out (Front)

Cool Air In (Back)

		Hose/Regulator
		Assembly
	Air For Combustion	Air For Heating
	Figure 2 - Cross Section Operational View
PROPANE	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
SUPPLY
	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 propane tank. You may need two or more tanks or one larger tank in colder weather. Use a 100-pound 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)	40°	32°	20°	10°	0°	-10°	-20°
At Tank Location
Number Of Tanks
(100-pound)	1	1	1	1	1	2	2

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