Desa H.S.I. Series owner manual Removing Burner Head, 70/90,000 BTU/Hr Models

Nozzle

(70/90,000 BTU/Hr Models)

1.Remove upper shell (see page 10).

2.Remove fan (see page 19).

3.Remove fuel and air line hoses from burner head.

4.Remove spark plug wire from spark plug.

5.Remove spark plug from burner head using 13/16" open-end wrench.

6.Remove three screws using 5/16" nut-driver and remove burner head from combustion chamber.

7.Place burner head into vise and lightly tighten.

8.Carefully remove nozzle from burner head using 5/8" socket wrench (see Figure 28).

9.Blow compressed air thru face of nozzle. This will free any dirt in nozzle area.

10.Inspect nozzle seal for damage.

11.Replace nozzle into burner head and tighten firmly

(80-110 inch-pounds/9.1-

12.4 n-m).

12.Attach burner head to combustion chamber.

13.Install spark plug in burner head.

14.Attach spark plug wire to spark plug.

15.Attach fuel and airline hoses to burner head.

16.Replace fan (see page 19).

17.Replace fan guard and upper shell.

16

Combustion

Chamber

Burner Head	Spark Plug
	Wire

Screw

Spark

Plug

Air Line Hose

Fuel Line Hose

Figure 27 - Removing Burner Head, 70/90,000 BTU/Hr Models

Nozzle

Face

Nozzle

Seal

Nozzle

Burner

Head

Air line	Fuel line
	Fitting
Fitting

Figure 28 - Removing Nozzle, 70/90,000 BTU/Hr Models

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