Manual

20
221691B
PILOT ASSEMBLY
Diagram 9.3
Diagram 9.2
CONTROL BOX WIRING
9 Replacement of Parts
240V~ 50Hz MAINS SUPPLY FUSED AT 3A
GRN/YEL
BLUE
RED
ORANGE
C N/C
THERMOSTAT
GAS
VALVE
CHASSIS
EARTH
N
L
0935
6124
PILOT
INJECTOR
PILOT
TUBE
PILOT
BURNER
ASSEMBLY
PILOT
SHIELD
SPARK
ELECTRODE
SECURING SCREW (2)
AND NUT (2)
THERMOCOUPLE
IGNITION LEAD
(CLEAR END)
INSULATION PANELS
Diagram 9.4
BAFFLE
TRAY
GRAPHITE
COATED
NUT
SIDE
INSULATION
PANEL
REAR
INSULATION
PANEL
CLIP
SCREW
0897
9.6 Piezo Unit and Ignition Lead
Follow the relevant instructions in Section 8.1.
Pull off ignition lead at piezo unit, see diagram 9.1.
To replace lead also, pull off the lead at the spark electrode
terminal, see diagram 9.3.
Remove the control box cover by removing securing screw and
unhooking at the side, see diagram 9.1.
Remove the piezo unit, secured by a nut inside the control box.
Replace in reverse order.
9.7 Spark Electrode
Follow the relevant instructions in Section 8.1.
Disconnect the thermocouple nut and withdraw the thermocouple
from the pilot burner, see diagram 9.3.
Remove the spark electrode, secured by a nut.
Replace in reverse order, checking that the spark gap is as
shown in diagram 7.2.
9.8 Insulation Panels
Follow the relevant instructions in Section 8.1.
Remove the two screws retaining each side insulation panel
within the combustion chamber and remove panel, see diagram
9.4.
Release the rear insulation panel clips and lift out panel.
Replace in reverse order.
Replace thermostat phial as in Section 8.1.