Desa H.S.I. Series owner manual Remove side cover screws using 5/16 nut-driver

Fuel Filter

(90,000 BTU/Hr Model)

1.Remove side cover screws using 5/16" nut-driver.

2.Remove side cover.

3.Pull upper fuel line off fuel filter neck.

4.Carefully pry bushing, lower fuel line, and fuel filter out of fuel tank.

5.Wash fuel filter with clean fuel and replace in tank.

6.Attach upper fuel line to fuel filter neck.

7.Replace side cover.

Fuel Filter

(150,000 BTU/Hr Model)

1.Remove upper shell (see page 10).

2.Remove fan (see page 19).

3.Loosen flare nut using 3/4" open-end wrench. Push fuel tube down, away from burner head. Fuel filter is located inside of fuel tube.

4.Lift out fuel filter.

5.Wash fuel filter with clean fuel and replace in fuel tube.

6.Connect fuel tube to burner head. Attach flare nut until nut seats against fuel tube and fitting. Tighten 1/4 turn more using 3/4" open-end wrench (100-130 inch- pounds/11.3-14.7 n-m).

7.Replace fan (see page 19).

8.Replace fan guard and upper shell.

Fuel Filter, Bushing,

and Lower Fuel Line

Upper

Fuel Line

Side Cover

Figure 13 - Fuel Filter Removal, 90,000 BTU/Hr Model

Fuel Filter	Combustion
	Chamber

Burner

Head

Fuel Tube

Flare Nut

Figure 14 - Fuel Filter Removal, 150,000 BTU/Hr Model

11

099605