Worcester GREENSTAR 25CDi GC Instruction Manual page 46

REPLACEMENT OF PARTS
IMPORTANT: AFTER REASSEMBLY
THE COMBUSTION MUST BE
CHECKED USING THE PROCE­
DURE IN THE SECTION "SETTING
THE GAS AIR RATIO". MEASURE­
MENT AND SETTING (IF NECES­
SARY) OF THE GAS RATIO MUST
NOT BE ATTEMPTED UNLESS THE
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PERSON IS EQLlIPPED WITH A
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COMBUSTION ANALYSER CON­
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FORMING TO BS 7927 AND IS COM­
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PETENT IN ITS USE.
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12. Fan assembly
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Remove electrical connector from fan.
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Remove condensate trap
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I (see page 42).
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12.1
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Undo the union connection (A).
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Remove wire clip (8) from air/gas
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adjustment assembly (e) then pull gas
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pipe down.
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12.2
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Unscrew two screws (D).
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12.3
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Remove fan from boiler.
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12.4
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Remove three screws retaining the
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air/gas adjustment assembly (E).
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Reassemble with new fan assuring that
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seals are correctly fitted.
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13. Electrode assembly
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Disconnect spark electrodes and flame
sensor connection.
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Remove two screws (F).
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Remove spark/flame electrode assem­
bly (G) from heat exchanger.
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lNSTALLATION & SERVlCING INSTRUCTIONS FOR WORCESTER BOSCH GREENSTAR 25CDi/3OCDV37CO';'2 COl
AORCESTER
REPLACEMENT OF PARTS
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BoIscIt Group