Glow-worm sxi and Gas Valve - Manual (Page 41)

41 0020015347-03
14 Replacement of Parts
14.10 Viewing Window
For access, refer to section 14.1.
Refer to diagram 14.7.
Remove circlip.
Remove steel washer.
Remove glass.
Remove fibre washer.
Replace in reverse order.
14.11 Expansion Vessel
For access, refer to section 14.1.
Refer to section 12.8 and drain the boiler heating circuit.
Undo the coupling at the base of the vessel, see diagram 14.8.
While holding the vessel remove the securing bolt on the top
panel of the boiler and upper support bracket on top of the
expansion vessel.
Lift the vessel up, draw bottom out to the left, lower and remove.
Fit the replacement unit. Refill, vent and pressurise the boiler.
Check for leaks.
14.12 Heat Exchanger
For access, refer to section 14.1.
Refer to section 12.3 for removal of the fan, gas valve and
burner assembly.
Drain the boiler heating circuit, see section 12.8.
Remove the clip securing the clear condense pipe to heat
exchanger.
Pull to remove the condense pipe out of the bottom of the heat
exchanger.
Undo the two nuts of the flow and return pipes from the heat
exchanger.
Move the pipes 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 14.9.
CAUTION: There will be water in the heat exchanger.
Remove condense pipe connector from bottom of heat
exchanger.
Carefully ease heat exchanger out.
Diagram 14.7
CIRCLIP
GLASS
STEEL
WASHER
FIBRE
WASHER
11413
Diagram 14.8
SECURING
BOLT
COUPLING
UPPER SUPPORT
BRACKET
EXPANSION
VESSEL
11488
11489
Diagram 14.9
FLOW AND
RETURN PIPE
NUTS SECURING SCREWS
AND CLAMPS
11490