Desa 44 kW (150, 8 (30, 5 (70, 4 (90, 20, 26, 000 Btu/Hr) owner manual Nozzle, Remove upper shell see

Nozzle

(20,5/26,4 kW [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

Combustion

Chamber

Burner Head	Spark Plug
	Wire

Screw

Spark

Plug

Air Line Hose

Fuel Line Hose

Figure 27 - Removing Burner Head, 20,5/26,4 kW (70/90,000 Btu/Hr) Models

head and tighten firmly

(80-110 inch-pounds/9.1-

12.4 n-m).

12. Attach burner head to

combustion chamber.

Nozzle Face

Nozzle Seal

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.

Nozzle

Burner

Head

Air line

Fuel line

Fitting

Fitting

16

Figure 28 - Removing Nozzle, 20,5/26,4 kW (70/90,000 Btu/Hr) Models

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