Theory Of Operation, Assembly, Installation | Desa ROPANE CONSTRUCTION HEATER

THEORY OF OPERATION ASSEMBLY INSTALLATION

THEORY OF OPERATION

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.

Flat Side Facing Up

Nut Clip

Shell

Slot

	Combustion	Fan
	Chamber	Fan
		Motor
	Clean
	Heated
	Air Out	Cool Air
	(Front)	Cool Air
	(Front)	In (Back)
		In (Back)

Hose/

Regulator

Assembly

Air For Combustion

Air For Heating

Figure 2 - Cross Section Operational View

ASSEMBLY

Figure 4 - Installing Nut Clip

Nut Clip

Screws

Handle

Rear of

Heater

1.Remove screw from top of fan guard (see Figure 3). Dis- card screw.

2.Insert nut clip (provided with handle) with flat side facing up through slot in top of shell. Align holes in nut clip with screw hole behind slot in top of shell. (see Figure 4).

3.Place handle over hole and clip. Insert two screws (provided with handle) through handle and tighten into shell. Make sure rear screw goes through shell and into fan guard. Tighten screws firmly.

Screw

Figure 3 - Removing Screw from Top of Fan Guard

Figure 5 - Attaching Handle

INSTALLATION

WARNING: Review and understand the warnings in the Safety Information section, pages 2 and 3. They are needed to safely operate this heater. Follow all local codes when using this heater.

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 ﬁtting on hose/regulator assembly to pro- pane tank(s). Turn fuel gas ﬁtting counterclockwise into threads on tank. Tighten ﬁrmly using a wrench. IMPORTANT: Posi- tion regulator so that hose leaving the regulator is in a hori- zontal position (see Figure 6, page 5). This places the regula- tor vent in the proper position to protect it from the weather.

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