7
GB
(see fi gure 7 e 8)
A.
Upper shell,
B.
Fan guard.
(see fi gure 9)
A
. Fuel Filter,
B.
Side cover,
C.
Fuel line.
(see fi gure 10)
A.
Fuel Filter, Bushing, and Lower Fuel Line,
B
.Upper fuel line,
C
. Side cover.
IGNITOR
1. Remove upper shell and fan guard (see fi gure 7-8).
2. Remove fan (see page 11).
3. Remove 4 side cover screws with a 5/16” nut driver. Remove
side cover (see Figure 9 or 10).
4. Disconnect ignitor wires (yellow) from ignition control
assembly (see Figure 11). Pull the ignitor wires up through
the hole in the lower shell.
5. Disconnect fuel line hose and air linehose. Remove photocell
from photocell bracket (see Figure 11).
6. Remove combustion chamber. Stand combustion chamber
on end with nozzle adapter bracket on top (see Figure 12).
7. Remove ignitor screw with a 1/4” nut driver. Carefully remove
ignitor from nozzle adapter bracket.
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
12).Torque .90 to 1.69 N-m (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.
12.Replace side cover (see Figure 9 or 10).
13.Connect and route fuel line hose and air line hose to burner
head. See
Fuel and Air Line Replacement and Proper
Routing
, page 11.
14.Replace photocell in photocell bracket. Route wires as
shown in either Figure 17, 18, or 19, page 11.
15.Replace fan (see page 13).
16.Replace fan guard and upper shell (see fi gure 7-8).
A.
B.
Figure 7-8 – Upper Shell Removal.
A.
B.
C.
Figure 9 – Fuel Filter Removal, 35.000 and 70.000 Btu/
Hr.
A.
B.
C.
Figure 10 – Fuel Filter Removal, 100.000 Btu/Hr.
SERVICE PROCEDURES
A.
B.
C.
D.
E.
F.
G.
H.
I.
L.
(see fi gure 11)
A
.Combustion Chamber
B
.Nozzle Adapter Bracket
C
.Ignitor
D
.Ignitor Wires
E
.Ignition Control
Assembly
F
.Side Cover
G
.Photocell Assembly
H
.Photocell Bracket
I
.Fuel Line Hose
L
.Air Line Hose
Figure 11 – Disconnecting Ignitor Wire sfrom Ignition
Control Assembly.
A.
B.
C.
D.
E.
F.
G.
(see fi gure 12)
A
.Ignitor Screw/Washer
Assembly
B
.Ignitor
C
.Nozzle Adapter Bracket
D
.Nozzle Adapter Bracket
Opening
E
.Combustion Chamber
F
.Photocell Bracket
G
.Ignitor Element
Figure 12 – Ignitor Replacement
CAUTION: Do not bend or strike ignitor element. Handle
with care.
