Desa 125,000 Btu/Hr Owner's Manual page 13

SERVICE PROCEDURES
Continued
NOZZLE ASSEMBLY
(For 125T/170T/100VT/140VT Models Only)
1. Remove upper shell (see Upper Shell Removal, page 9).
2. Remove fan (see Fan, page 9).
3. Remove fuel and air line hoses from nozzle assembly (see Fig-
ure 17).
4. Turn nozzle assembly 1/4 turn to left and pull toward motor to
remove (see Figure 18).
5. Place plastic hex-body into vise and lightly tighten.
6. Carefully remove nozzle from the nozzle adapter using 5/8"
socket wrench (see Figure 19).
7. Blow compressed air through face of nozzle. This will free
any dirt in nozzle area.
8. Inspect nozzle sleeve for damage.
9. Replace nozzle into nozzle adapter until nozzle seats. Tighten
1/3 turn more using 5/8" socket wrench 4.5 to 5.1 N-m (40 to
45 in-lbs). See Figure 19.
10. Attach nozzle assembly to burner strap (see Figure 18).
11. Attach fuel and airline hoses to nozzle assembly. See Fuel and
Airline Replacement and Proper Routing, page 14.
12. Replace fan (see Fan, page 9).
13. Replace upper shell (see Upper Shell Removal, page 9).
Combustion
Chamber
Nozzle
Adapter
Bracket
Photocell
Bracket
Air Line
Hose
Figure 17 - Removing Air and Fuel Line Hoses
(125T/170T/100VT/140VT Models Only)
108481
Nozzle/
Adapter
Assembly
Fuel Line Hose
For more information, visit www.desatech.com
For more information, visit www.desatech.com
SERVICE PROCEDURES
Combustion
Chamber
Figure 18 - Removing Nozzle/Adapter Assembly
Nozzle
Face
Nozzle
Nozzle Adapter
Figure 19 - Nozzle and Nozzle Adapter
Nozzle/Adapter
Assembly
Nozzle Sleeve
Air Line
Fitting
Fuel Line
Fitting
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