37
BOXER
combination boiler -
Installation and Servicing
SERVICING
56 IGNITION/FLAME DETECTION ELECTRODES REPLACEMENT
1.
Refer to Frame 49.
2.
Remove the casing. Refer to Frame 41.
3.
Remove the expansion vessel and shield/air guide. Refer
to Frame 43.
4.
Remove the combustion chamber. Refer to frame 47.
5.
Disconnect the electrical leads from the ignition/ionisation
electrodes.
6.
Undo the single retaining screw holding the spark
electrode to the burner.
7.
Fit the new ignition/ionisation electrodes, check
dimensions as shown.
8.
Re-assemble in reverse order.
PP
4
4
4
6
6
6
6
57 HEAT EXCHANGER REPLACEMENT
1.
Refer to Frame 49.
2.
Remove the casing. Refer to Frame 41.
3.
Remove the expansion vessel and shield/air guide. Refer
to Frame 43.
4.
Unscrew 3 screws and remove front panel of the collector
hood.
5.
Remove the heat exchanger baffle by pulling forwards.
6.
Remove the combustion chamber (Refer Frame 47).
7.
Drain the CH and DHW circuit. Refer to fra
me 44.
8.
Disconnect the electrical leads from the overheat
thermostat and from low water pressure switch.
9.
Unscrew the 4 nuts of the hydraulic circuit of the heat
exchanger.
10.
Pull the heat exchanger forwards from the flue gas
manifold.
11.
Fit the new heat exchanger and re-assemble in reverse
order, using new seals if necessary.
9
9
10
8
8
SER
VICING