Desa BY100CEH, BY70CEH, BY150CEH, BY35CEH owner manual Ignitor, Service Procedures, Continued

SERVICE PROCEDURES

9

SERVICE PROCEDURES

Continued

IGNITOR

1.Remove upper shell and fan guard (see page 8).

2.Remove fan (see page 13).

3.Remove 4 side cover screws with a 5/16" nut driver. Remove side cover (see Figure 9 or 10, page 8).

4.Disconnect ignitor wires (black) from ignition control assem- bly (see Figure 11). Pull the ignitor wires up through the hole in the lower shell.

5.Disconnect fuel line hose and air line hose. Remove photocell from photocell bracket (see Figure 11).

6.Remove combustion chamber. Stand combustion chamber on end with nozzle adapter bracket on top (see Figure 12).

7.Remove ignitor screw with a 1/4" nut driver. Carefully remove ignitor from nozzle adapter bracket.

CAUTION: Do not bend or strike ignitor element. Handle with care.

Combustion	Nozzle Adapter
Chamber
	Bracket
	Ignitor
Air Line	Ignitor
	Wires
Hose

Fuel Line

Hose

Photocell
Bracket	Ignition
Photocell
	Control
Assembly	Assembly
Side Cover

Figure 11 - Disconnecting Ignitor Wires from Ignition Control Assembly

8.Carefully remove replacement ignitor from styrofoam packing.

9.Carefully guide ignitor into opening in nozzle adapter bracket. Do not strike ignitor element. Attach ignitor to nozzle adapter bracket with screw using a 1/4" nut driver (see Figure 12). Torque .90 to 1.69 N-m (8 to 15 in-lbs) Do not over torque.

10.Replace combustion chamber.

11.Route the ignitor wires back down through the hole in the lower shell. Connect wires to the ignition control assembly.

12.Replace side cover (see Figure 9 or 10, page 8).

13.Connect and route fuel line hose and air line hose to burner head. See Fuel and Air Line Replacement and Proper Rout- ing, page 12.

14.Replace photocell in photocell bracket. Route wires as shown in either Figure 17, 18, or 19, page 11.

15.Replace fan (see page 13).

16.Replace fan guard and upper shell (see page 8).

Ignitor Screw/

Washer Assembly

Ignitor

Ignitor

Element

Photocell

BracketNozzle

Adapter

Bracket

Nozzle Adapter

Combustion Bracket Opening

Chamber

Figure 12 - Ignitor Replacement

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