Glow-worm 18sxi, Installation And Servicing Manual, Page: 54 / 64

54
CONDENSE HOSE
SECURING CLIP
HEAT
EXCHANGER
15 Replacement of Parts
15.10 Viewing Window
For access, refer to section 15.1.
Refer to diagram 15.5.
Remove circlip.
Remove steel washer.
Remove glass.
Remove fibre washer.
Replace in reverse order.
15.11 Expansion Vessel
For access, refer to section 15.1.
Refer to section 15.1 and drain the boiler heating circuit.
Undo the coupling at the base of the vessel, see diagram
15.6.
While holding the vessel remove the securing bolt on the top
panel of the boiler. Remove upper support bracket.
Fit a new gasket between the expansion vessel and coupling.
Refill, vent and pressurise the boiler.
Check for leaks.
15.12 Heat Exchanger
Refer to Manual Handling section.
For access, refer to section 15.1.
Refer to section 13.5 for removal of the fan, gas valve and
burner assembly.
Refer to section 15.1 and drain the boiler heating circuit.
Remove the securing clip from the heat exchanger adapter
then disconnect the adapter and flexible hose, see diagram
15.7.
Undo the two nuts of the flow and return pipes from the heat
exchanger.
Move the pipes away from the heat exchanger.
Slacken the three heat exchanger securing screws and
clamps (two at the top and one at the bottom) to remove the
heat exchanger, see diagram 15.8.
CAUTION : There will be water in the heat exchanger.
Remove condense pipe connector from bottom of heat
exchanger.
Carefully ease heat exchanger out.
13279
13278
FIBRE WASHER
GLASS
STEEL WASHER
CIRCLIP
Diagram 15.7
13570
Diagram 15.6
15.13 Flue Hood
For access, refer to section 15.1.
Remove heat exchanger as per section 15.12.
Remove the two securing screws and pull the flue hood down
and away from the flue hood bracket and flue elbow, see
diagram 15.9.
Diagram 15.5