105536
10
For more information, visit www.desatech.com
For more information, visit www.desatech.com
Figure 21 - Removing Air and Fuel Line Hoses (165T Model Only)
Fuel Line
Hose
Combustion
Chamber
Nozzle/
Adapter
Assembly
Air Line
Hose
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 18). Torque
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
(see Figure 17).
12. Replace side cover (see Figures 15 and 16, page 9).
13. Connect and route fuel line hose and air line hose to nozzle
adapter assembly. See Fuel and Air Line Replacement and
Proper Routing, page 11.
14. Replace photocell in photocell bracket. Route wires as
shown in Figure 19, 20, or 21.
15. Replace fan (see Fan, page 8).
16. Replace fan guard and upper shell (see Upper Shell Removal,
page 8).
CAUTION: Do not bend or strike ignitor element.
Handle with care.
Figure 19 - Removing Air and
Fuel Line Hoses, (40/55T/70T
Models Only)
Fuel Line
Hose
Combustion
Chamber
Nozzle/
Adapter
Assembly
Air Line
Hose
Photocell
Bracket
Burner
Strap
Figure 20 - Removing Air and
Fuel Line Hoses, (115T Model
Only)
Photocell
Bracket
Burner
Strap
IGNITOR
1.
Remove upper shell and fan guard (See Upper Shell Removal,
page 8).
2.
Remove fan (see page 8).
3.
Remove 4 side cover screws with a 5/16" nut driver. Remove
side cover (see Figures 15 and 16).
4.
Disconnect ignitor wires (yellow) from ignition control as-
sembly (see Figure 17). 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 17).
6.
Remove combustion chamber. Stand combustion chamber on
end with nozzle adapter bracket on top (see Figure 18).
7.
Remove ignitor screw with a 1/4" nut driver. Carefully remove
ignitor from nozzle adapter bracket.
Figure 17 - Disconnecting Ignitor Wires from Ignition Control
Assembly
Combustion
Chamber
Photocell
Bracket
Photocell
Assembly
Air Line Hose
Fuel Line Hose
Ignitor Wire
Ignitor
Nozzle Adapter
Bracket
Ignition
Control
Assembly
Side Cover
(Yellow)
Photocell Bracket
Ignitor
Ignitor Screw/Washer
Assembly
Nozzle Adapter
Bracket
Ignitor Element
Combustion
Chamber
Nozzle Adapter
Bracket Opening
Figure 18 - Ignitor Replacement
SERVICE PROCEDURES
Continued
Combustion
Chamber
Burner
Strap
Photocell
Bracket
Fuel Line
Hose
Air Line
Hose
Nozzle/
Adapter
Assembly
SERVICE PROCEDURES
