33
221966B
12.9 Main Burner
Remove the main burner as Section 10.2.
12.10 Main Injector
Remove the main burner as Section 10.2.
Remove the main injector as Section 10.3.
12.11 Insulation - diagram 12.4
Combustion Chamber Front
Remove the retaining screw then the insulation.
Sides
Slide the insulation out.
12.12 Viewing Window - diagram 12.5
Remove the old self adhesive aluminium foil gasket and the old
mica window. Replace with a new mica window. Peel off the
backing paper and secure with new self adhesive aluminium foil
gasket, see diagram 12.5. Ensure no air bubbles are trapped
underneath the foil.
12.13 Air Pressure Switch - diagram 12.6
Release the control box as Section 7.1
Remove the pressure tubes and the electrical connections from
the PCB, release the screws and remove the switch.
When fitting the replacement make sure that the plastic tubes
and electrical connections are made as shown in diagram 11.5
and 12.6.
Diagram 12.3
SOLENOIDS
ELECTRICAL
PLUG
SECURING
SCREW
EXTENDED
SCREW
(8 off)
RESTRICTOR
(120FF Only)
PILOT PIPE
TUBING NUT
4302
12 Replacement of Parts
Diagram 12.4
SECURING SCREW
FRONT
INSULATION
SIDE INSULATION
4303
Diagram 12.5
SELF ADHESIVE
ALUMINIUM FOIL
GASKET
MICA WINDOW
PEEL OFF
BACKING
PAPER
OPENING
(INSIDE FACE
OF THE BOILER
FRONT COVER)
7907
