Potterton SIRIUS FS Installation & Servicing Instructions Manual page 59

7.3.12 Spark & Ionisation Electrodes
Torq screws
7.3.13 Combustion Fan
Sirius FS
- See section 7.2 (item 3) for access
- Remove the front access door using a flat bladed screwdriver to release
the catches at the top of the door. Lift the top of the door outwards and
then upwards to remove it.
- Remove connection lead
- Using a torq tool unscrew the two screws holding the electrode and remove
- Replacement is the reverse (new gasket recommended)
- See section 7.2 (items 1, 2, 3 & 4) for access
- Remove the front access door using a flat bladed screwdriver to release
the catches at the top of the door. Lift the top of the door outwards and
then upwards to remove it.
- Unplug the two electrical connectors from the rear of the fan
Connectors
- Remove the six bolts connecting the fan to the venturi
- Remove the four bolts connecting the fan to the air control valve / burner
- Remove fan
- Replacement is the reverse
Spark gap 4.5mm (+/- 0.5mm)
Distance between burner head and
end of probes 8.0mm (+/-1.0mm)
57
Bolts
GB/IE