49
FLAME DETECTION ELECTRODE REPLACEMENT
50
SPARK GENERATOR REPLACEMENT
1. Refer to Frame 43
2. Disconnect the leads from the spark generator
3. Remove the single M5 Screw securing the spark
generator to the gas valve mounting bracket.
4. Lift the spark generator up and out of the bottom
retaining moulding.
5. Fit the new spark generator and re-assemble in reverse
order ensuring that the the earth lead is replaced
6. Check operation of the boiler .Refer to Frames 32& 33
Flame Detection Electrode
Spark Generator
12.5mm
Straight edge
1. Refer to Frame 43.
2. Remove the burner. Refer to
Frame 46.
3. Unplug the ame detection lead
from the electrode.
4. Remove the 2 screws retaining
the detection electrode.
5. Remove the electrode.
6. Fit the new ame detection
electrode, using the new gasket
supplied.
7. Reassemble in reverse order.
8. Check the operation of the
boiler. Refer to Frames 32 & 33.
3
2
2
51
GAS CONTROL VALVE REPLACEMENT
1. Refer to Frame 43
2.
Unplug the electrical lead connection from the gas control valve.
3. Disconnect the earth wire.
4. Remove the outlet gas valve clip and slide the pipe upwards
5. Undo the gas inlet pipe union at the inlet to the gas valve.
6. Undo the single screw xing the gas valve to the mounting
bracket and withdraw the valve forwards.
7. Fit the new gas control valve ensuring that the O ring and
sealing washer are in place and reconnect gas and electrical
connections.
8. Check operation of the boiler. Refer to Frames 32 & 33.
3
5
6
4
2
SERVICING
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