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SECTION 7 - ROUTINE SERVICING INSTRUCTIONS
3
7.9 CLEANING THE HEAT EXCHANGER
Note: Make sure the condensate trap/
siphon is fully drained before cleaning.
Refer to Sections 7.8.
1. Remove ignition / detection electrode.
Refer to Section 7.10.
2. It is advisable to replace the sump cover
prior to the water ush process.
3. Thoroughly ush the heat exchanger
by pouring water into the top of the
combustion chamber ensuring the full top
area is covered.
4. Remove the sump cover and clean loose
deposits from the sump.
5. Inspect the ignition / detection electrode.
Ensure that it is clean and in good
condition - replace if necessary.
6. Re-t the ignition / detection electrode.
Ensure that earth wire is connected to the
electrode.
7. Check that the ignition gap is correct.
Refer to Section 7.10.
1
Ignition / Detection Electrode
Earth Wire
7.10 IGNITION / DETECTION ELECTRODE
1. Remove the burner. Refer to Section 7.7.
2. Check dimensions are correct as in diagram
below.
3. Reassemble in reverse order.
FOR REMOVAL:
1. Unplug the ignition / detection lead from the
electrode.
2. Remove the earth lead from the ignition /
detection electrode.
3. Remove the 2 screws holding the ignition /
detection electrode to the combustion chamber.
4. Remove the electrode.
5. Fit the new electrode, using the new gasket
supplied. Check dimensions as shown.
6. Reassemble in reverse order.
7. Check the operation of the boiler.
Ignition / Detection Electrode
3mm
Straight edge
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