14 Replacement of Parts
14.11 Condensate Trap and Siphonic Drain
For access, refer to section 14.1.
Refer to diagram 14.6.
Remove the igniter unit as described in section 14.3 to
improve accessibility.
Remove the securing clip from the heat exchanger adapter,
then disconnect the adapter and flexible hose.
Lift the siphon adapter and hose out of the condensate trap
and siphonic drain, do not disconnect the hose.
Disconnect the the drain connection.
Slacken to disengage but do not remove the the two securing
screws.
The condense trap will contain water, lift taking care not to
spill the water.
After replacement and before fitting the adapter fill the trap
with water.
Cleaning
Remove the condense trap as previously described.
Remove the float to clean it.
Remove any solids found.
Flush water through the trap to remove any remaining solids.
Check for any debris in the outlet hose of the condensate
drain and clean as necessary.
14.12 Heat Exchanger
Refer to Manual Handling section.
For access, refer to section 14.1.
Refer to section 12.5 for removal of the fan, gas valve and
burner assembly.
Drain the boiler.
Remove the securing clip from the heat exchanger adapter
then disconnect the adapter and flexible hose.
Undo the two nuts of the flow and return pipes from the heat
exchanger.
Move the hoses away from the heat exchanger.
Loosen the three heat exchanger securing screws and
clamps (two at the top and one at the bottom) to remove the
heat exchanger, see diagram 14.8.
CAUTION: There will be water in the heat exchanger.
Remove condense pipe connector from bottom of heat
exchanger.
Carefully ease heat exchanger out.
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