Worcester GREENSTAR 25CDi GC Instruction Manual page 44

REPLACEMENT OF PARTS
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7. Gasvalve
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Isolate gas supply at boiler gas cock
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Push air inlet tube (A) upwards.
7.1
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Undo top gas connection (B) to gas valve.
7.1
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Undo bottom gas connection (C) to gas
valve.
7.2
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Undo two securing screws (D) on the
underside of casing.
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Pull valve up and forward out of boiler.
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Disconnect electrical connections.
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Replace valve with new seals and check
for gas soundness.
Note: The valve wiJJ require setting, follow pro­
cedure ·Setting the gas/air ratio' in the gas
conversion section.
8. Siphon
8.1
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Pull condensate pipe out of the adapter.
8.21> Remove trap from boiler.
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Clean trap and check that the connection
to the heat exchanger is clear.
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Fill the condensate trap with approxi ­
mately 1/4 litre of water and refit in reverse
order.
INSTALLATION & SERVICING INSTRUCTiONS FOR WORCESTER BOSCH
GREEN~rr',i'~,
. ),/3OCO<l37CDi/42
CD,
~ORCESTER
REPLACEMENT OF PARTS
6J.20 613 7003 (2006/11}