OWNER’S MANUAL
SERVICE
PROCEDURES
Continued
NOZZLE ASSEMBLY
1. | Remove upper shell (see page 8). |
2. | Remove fan (see page 13). |
3. | Remove fuel and air line hoses from nozzle |
| assembly (see Figure 17, 18, or 19). |
4. | Turn nozzle assembly 1/4 turn to left |
| and pull toward motor to remove (see |
Combustion
Chamber
Nozzle Adapter
Bracket
Air Line
Hose
Photocell Bracket
Nozzle/
Adapter
Assembly
Fuel Line
Hose
FUEL AND AIR LINE
REPLACEMENT AND
PROPER ROUTING
1. | Remove upper shell (see page 8). |
2. | Remove side cover screws using 5/16" |
| nut driver. |
3. | Remove side cover. |
4. | Inspect fuel and air line hoses for cracks |
| and/or holes. If fuel line hose is damaged, |
| disconnect from nozzle adapter (see Fig- |
| ure 17, 18, or 19) and from fuel filter (see |
| Figure 20). |
5. | Place plastic |
| lightly tighten. |
6. | Carefully remove nozzle from the |
| nozzle adapter using 5/8" socket |
| wrench (see Figure 21). |
7. | Blow compressed air through face of |
| nozzle. This will free any dirt in nozzle |
| area. |
8. | Inspect nozzle seal for damage. |
9. | Replace nozzle into nozzle adapter un- |
| til nozzle seats. Tighten 1/3 turn more |
| using 5/8" socket wrench 4.5 to 5.1 N- |
| m (40 to 45 |
10. | Attach nozzle assembly to burner strap. |
11. | Attach fuel and airline hoses to nozzle |
| assembly. See Fuel and Airline Re- |
| placement and Proper Routing. |
12. | Replace fan (see page 13). |
13. | Replace fan guard and upper shell (see |
| page 8). |
Combustion
Chamber
Nozzle
Adapter
Bracket
Photocell
Bracket
Nozzle/
Adapter
Assembly
Air Line 
Hose
Fuel Line Hose
Figure 17 - Removing Air and Fuel Line Hoses (35/50/70,000 Btu/Hr Models Only)
Figure 18 - Removing Air and Fuel Line Hoses (100,000 Btu/Hr Model Only)
Combustion
Chamber
Nozzle Adapter
Bracket
Photocell
Bracket
Air Line
Hose 
Nozzle/
Adapter
Assembly
Fuel Line Hose
Figure 19 - Removing Air and Fuel Line Hoses (150,000 Btu/Hr Model Only)
Combustion |
|
Chamber | Nozzle/ |
| Adapter |
| Assembly |
Figure 20 - Removing Nozzle/Adapter Assembly
Nozzle Face
Nozzle Seal
Nozzle
Nozzle Adapter
Air Line Fitting
Fuel Line Fitting
Figure 21 - Nozzle and Nozzle Adapter
page 8). If air line hose is damaged, dis- |
connect from nozzle adapter (see Figure |
17, 18, or 19) and from barb fitting on |
pump end cover (see Figure 22). |
5. Install new air and/or fuel line. Attach |
one end of air line hose to barb fitting |
on pump end cover (see Figure 22) and |
the other end to nozzle adapter (see |
Figure 17, 18, or 19). Attach one end |
of fuel line hose to fuel filter (see page |
8) and the other end to nozzle adapter |
(see Figure 17, 18, or 19). |
For 35/50/70,000 Btu/Hr model heat- ers, route air and fuel lines approxi- mately as shown in Figure 17.
Note: Hoses are not to be touching pho- tocell bracket.
For 100,000 Btu/Hr model heater, route air and fuel lines approximately as shown in Figure 18.
Note: Hoses are not to be touching pho- tocell bracket.
For 150,000 Btu/Hr model heater, route air and fuel lines approximately as shown in Figure 19.
Note: Hoses are not to be touching pho- tocell bracket
6.Replace side cover.
7.Replace upper shell and fan guard (see page 8).
Pump End Cover
Barb Fitting
Air Hose
Figure 22 - Air Hose to Barb FItting
Continued
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