Master BY100CEB Owner's Manual page 11

SERVICE
PROCEDURES
Continued
Nozzle
(35,000 Btu/Hr Model)
1. Remove upper shell (see page 8).
2. Remove fan (see page 13).
3. Remove fuel and air line hoses from
nozzle assembly.
4. Turn nozzle assembly 1/4 turn to left
and pull toward motor to remove.
5. Place plastic hex-body into vise and
lightly tighten.
6. Carefully remove nozzle from the
nozzle adapter using 5/8" socket
wrench.
7. Blow compressed air thru 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 (4.5-5.1 n-m/
40-45 inch-pounds).
10. Attach nozzle assembly to burner strap.
11. Attach fuel and airline hoses to nozzle
assembly.
12. Replace fan (see page 13).
13. Replace fan guard and upper shell.
Combustion
Chamber
Air Line
Hose
Figure 20 - Removing Air and Fuel Line
Hoses, 35,000 Btu/Hr Model
103618
Burner
Strap
Figure 21 - Removing Nozzle Assembly,
35,000 Btu/Hr Model
Nozzle
Face
Nozzle
Nozzle
Adapter
Figure 22 - Nozzle and Nozzle Adapter,
35,000 Btu/Hr Model
Nozzle
(70/100/150,000 Btu/Hr Models)
1. Remove upper shell (see page 8).
2. Remove fan (see page 13).
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
Nozzle
using 13/16" open-end wrench.
Assembly
6. Remove three screws using 5/16" nut-
driver and remove burner head from
Fuel Line
combustion chamber.
Hose
7. Place burner head into vise and lightly
tighten.
8. Carefully remove nozzle from burner
head using 5/8" socket wrench (see Fig-
ure 24).
9. Blow compressed air thru face of nozzle.
This will free any dirt in nozzle area.
OWNER'S MANUAL
Nozzle
Assembly
Nozzle
Seal
Air line
Fitting
Fuel line
Fitting
11
10. Inspect nozzle seal for damage.
11. Replace nozzle into burner head and
tighten firmly (9.1-12.4 n-m/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 13).
17. Replace fan guard and upper shell.
Combustion
Chamber
Screw
Fuel Line
Air Line
Hose
Hose
Figure 23 - Removing Burner Head, 70/
100/150,000 Btu/Hr Models
Nozzle
Face
Nozzle
Seal
Nozzle
Burner
Head
Air line
Fitting
Figure 24 - Removing Nozzle, 70/100/
150,000 Btu/Hr Models
Burner
Head
Spark Plug
Wire
Spark
Plug
Fuel line
Fitting
Continued