Zanussi ULTRA COMBI 35 Installation And Servicing page 44

47 RETURN THERMISTOR RENEWAL
1. Refer to Frame 43.
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 fitted to the pipe on the
thermistor locator tab as shown.
5. Check the operation of the boiler. Refer to Frames 32 & 33.
4
Thermistor Locator Tab
(with thermistor fitted)
48 IGNITION ELECTRODE REPLACEMENT
1. Refer to Frame 43.
2. Remove the burner. Refer to Frame 46.
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 Frames 32 & 33.
Spark Gap
3.5mm
44
SERVICING
2
Ignition Electrode
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Installation and Servicing