SERVICING

49CLEANING THE CONDENSATE 'S' TRAP

1.Undo the plastic union nut on

the condensate ‘S’ trap outlet.

2. Remove the 2 screws.

3.Pull the trap down and forward

to remove.

4. Flush out any deposits with clean water.

50 CLEANING THE HEAT EXCHANGER

1.Remove ignition and flame detection electrodes. Refer to Frames 56 & 57.

2.Remove the 3 screws retaining the sump cover and remove.

3.Using a suitable tool as supplied in the standard British Gas Flue brush kit, clean between the heat exchanger fins from the top of the heat exchanger.

4.Access to the base of the heat exchanger is now possible. Brush clean any deposits from the base of the heat exchanger and remove any loose deposits from the sump.

5.Inspect the ignition and detection electrodes. Ensure that they are clean and in good condition - replace if necessary.

6.Check the condition of the combustion chamber insulation. Any cracked or damaged pieces must be replaced.

Note. Take care not to disturb the ionisation probes at the front and rear of the combustion chamber.

7.Check that the ignition and detection gaps are correct. Refer to Frames 56 & 57.

Sump cover

2

3

Ionisation probes

nm7401

Heat exchanger

SERVICING

51 REASSEMBLY

Reassemble the boiler in the following order.

1.Refit the condensate ‘S’ trap, ensuring that it is full of water.

2. Refit the sump cover plate.

3.Refit the electrodes (check dimensions Frames 56 & 57).

4.Refit the burner.

5.Refit the fan / venturi assembly.

6.Reconnect the fan electrical leads.

7.Refit the boiler sealing panel.

IMPORTANT.

Ensure the boiler sealing panel is correctly fitted and that a good seal is made.

8.Refit the boiler front and bottom panels.

9.Turn on the gas supply at the gas service cock.

10.Reconnect the electrical supply.

icos - Installation & Servicing

35

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IDEAL INDUSTRIES HE15, HE24, HE18, HE12 Servicing Cleaning the Condensate S Trap, Cleaning the Heat Exchanger, Reassembly
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HE12, HE15, HE18, HE24 specifications

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