3.13 IGNITION ELECTRODE REPLACEMENT
1. Refer to Section 3.8.
2. Remove the burner. Refer to Section 3.11.
3. Unplug the ignition lead from the electrode.
4. Remove the earth lead from the ignition
electrode.
5. Remove the 2 screws holding the ignition
electrode to the combustion chamber.
6. Remove the electrode.
7. Fit the new ignition electrode, using the
new gasket supplied. Check dimensions as
shown.
8. Reassemble in reverse order.
9. Check the operation of the boiler. Refer to
Sectons 2.22 & 2.23.
3.12 RETURN THERMISTOR RENEWAL
1. Refer to Section 3.8.
2. Unclip the return thermistor from the return pipe and withdraw it from the
boiler.
3. Disconnect the electrical lead from the thermistor.
4. Reconnect the electrical lead to the new thermistor and reassemble in
reverse order, ensuring that the thermistor is securely tted to the pipe on the
thermistor locator tab as shown.
5. Check the operation of the boiler.
2
Ignition Electrode
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