Desa H.S.I. Series Electric Heater User Manual


 
11
102438
Nozzle
1. Remove upper shell (see page
9).
2. Remove fan (see page 9).
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
13).
9. Blow compressed air through
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 rmly (80-
110 inch-pounds).
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 9).
17.Replace fan guard and upper
shell.
Figure 12 - Removing Burner Head
Figure 13 - Removing Nozzle
Air Line Hose
Screw
Combustion
Chamber
Spark Plug Wire
Burner Head
Fuel Line Hose
Spark
Plug
Nozzle
Face
Nozzle
Nozzle Seal
Burner
Head
Fuel Line Fitting
Air Line
Fitting