Saunier Duval Xeon 80ff Instructions For Use Installation And Servicing page 32

PHIAL
POCKET
SPLIT
PIN
OVERHEAT
CUTOFF
DEVICE
PHIAL
SPLIT
PIN
GLAND SEAL
(Right hand illustrated)
NOTE: All capillaries and
cables should be
situated within the
"Gland Seal".
10.4 Control Board (PCB) - diagram 102A
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 9.5.
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.
221972A
10 Replacement of Parts
THERMOSTAT
PUMP
OVERRUN
PHIAL
PHIAL
POCKET
RETAINING
CLIP
Diagram 10.2
ELECTRICAL PLUGS
CHASSIS
EARTH
CONNECTION
MAIN
TERMINAL
STRIP
SECURING
SCREW (2)
ELECTRICAL
CONNECTION
SL BROWN CABLE
PLASTIC
RETAINING
CLIP
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.
32
BOILER
THERMOSTAT
ELECTRICAL
CONNECTION
NO.3"YELLOW"
CABLE
OVERHEAT
CUTOFF
ELECTRICAL
CONNECTION
"WHITE"
CABLE
SUPPORT
IGNITION
POST (4)
LEAD
ELECTRICAL
CONNECTION
N BLUE CABLE
Diagram 10.2A