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5.5. FLUE THERMISTOR REPLACEMENT
CAUTION
Please follow the steps listed in replacement of components FIRST STAGE.
Disconnect the electrical lead from the flue thermistor.
Rotate the thermistor anti-clockwise and pull the thermistor gently away
from its housing.
Insert the new thermistor into the housing and rotate it clockwise and
gently push the thermistor back into place.
Reconnect the thermistor lead and ensure it has made good contact and
correctly located.
Please follow the step listed in replacement of components FINAL STAGE.
5.6. IGNITION ELECTRODE REPLACEMENT
CAUTION
Please follow the steps listed in replacement of components FIRST STAGE
1. Unplug the ignition lead form the electrode.
2. Remove the earth lead from the ignition electrode.
3. Remove the burner.
4. Remove the 2 screws holding the ignition electrode to the combustion
chamber.
5. Remove the electrode.
6. Fit the new ignition electrode, using a new gasket.
7. Ensure the correct distances are maintained between the electrode and
burner.
8. Reassemble in reverse order.
Please follow the step listed in replacement of components FINAL STAGE.
5.7. NOZZLE REPLACEMENT
CAUTION
Please follow the steps listed in replacement of components FIRST STAGE
1. Disconnect the electrical leads from the fan.
2. Remove the clip securing the flexible gas pipe to the venturi and remove
the gas pipe from the venturi.
3. Loosen the union nut on the outlet of the gas valve and remove the flexible
gas pipe from the boiler.
4. Ensure the code on the new nozzle is the correct code to work with your
appliance.
5. Discard the old injector and install the new nozzle.
6. Reassemble the above parts in reverse order.
7. Restore the gas and electric supply to the boiler.
Please follow the step listed in replacement of components FINAL STAGE.
