...........
11.~4,
..
""··
···••••
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~
~~~~~~
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..
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...
REPLACEMENT
OF
PARTS
. .
..
..
,,
~,~-
....
,,1
\
\
\
I
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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
PERSON
IS
EQUIPPED
WITH
A
COMBUSTION
ANALYSER
CON-
FORMING
TO
BS 7927 AND IS COM-
PETENT IN ITS USE.
11.
Fan assembly
~
Remove electrical
connector
from fan.
~
Remove
condensate
trap
(see page 40).
11.1
~
Undo
the union connection (A).
~
Remove
wire
clip
(B) from air/gas
adjustment
assembly (C) then pull gas
pipe
down.
11.2
~Unscrew
two
screws
(D).
11.3
~
Remove fan from boiler.
11.4
~Remove
three
screws
retaining the
air/gas adjustment
assembly (E).
~
Reassemble with
new
fan assuring that
seals are correctly fitted.
12.
Electrode assembly
~
Disconnect
spark
electrodes
and flame
sensor connection.
~
Remove
two
screws
(F).
~
Remove spark/flame
electrode
assem·
bly
(G) from heat exchanger .
INSTALLATION & SERVICING INSTRUCTIONS
FOR
WORCESTER BOSCH GREENSTAR 30CDI/40CDI Coc,ectlocal
~ORCESTER
6 720
614
556a
(2007/07)
Bosch
Group
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