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2000225231B
Diagram 10.2
10 Replacement of Parts
RETAINING
CLIP
CONTROL
THERMOSTAT
PHIAL
PHIAL
RETAINING
BRACKET
SECURING
SCREW
OVERHEAT
CUTOFF
DEVICE
PHIAL
SPLIT
PIN
GLAND
SEAL
(Right hand
illustrated)
NOTE:
All capillaries
and cable should be
situated within the
'Gland seal'.
4103
Diagram 10.2A
ELECTRICAL PLUGS
PLASTIC
RETAINING
CLIP
ELECTRICAL
PLUGS
ELECTRICAL
CONNECTION
BROWN CABLE "SL"
SUPPORT
POST (4)
SECURING
SCREW (2)
IGNITION
LEAD
EARTH
CONNECTION
MAIN
TERMINAL
STRIP
ELECTRICAL
CONNECTION
BLUE CABLE "N"
5756
4090
CHASSIS
EARTH
CONNECTION
BOILER
THERMOSTAT
ELECTRICAL
CONNECTION
NO.3 "YELLOW"
CABLE
10.4 Control Board (PCB) diagram 10.2A
Release the control box, refer to Section 5.6.
Disconnect the three electrical plugs and ignition lead.
Release the cables from the plastic retaining clip, then disconnect
the cables from the PCB to the main terminal strip, control
thermostat and earth connection.
Release the main terminal strip and plastic label.
Carefully pull the board away from its supports.
When refitting refer to wiring diagram 9.6 or 9.7 as appropriate.
10.5 Pilot Burner and Pilot Injector
Proceed as Section 8.3 and 8.5.
10.6 Electrode
Proceed as Section 8.3 and 8.5.
Gain access as Section 5.6 to remove lead from control box.
10.7 Multifunctional Control - diagram 10.3
Disconnect the pilot supply by unscrewing the tubing nut at the
multifunctional control, take care as there is a restrictor on the
pilot pipe.
Disconnect the electrical plug.
Support the multifunctional control, remove the four extended
screws from the flanged connections at the left and right hand
side.
Remove and discard the original “O” rings from the flanged
connections and fit the new “O” ring supplied, into recess,
before fitting the replacement multifunctional control.
After assembly test for gas soundness and purge in accordance
with the current issue of BS6891 or in IE, the current edition of
I.S.813 "Domestic Gas Installations".
