REPLACEMENT OF PARTS
14. Fan
14.1
Remove 3 screws (A) retaining mixing
chamber.
14.2
Remove 2 screws (B) retaining the fan to
the air/gas manifold.
14.3
Remove screw (C) retaining plate and
remove.
Re-assemble with new fan ensuring seals
are correctly fitted.
15. Electrode assembly
Disconnect spark electrodes and flame
sensor connection.
Remove clamping plate (D).
Remove spark/flame electrode assembly (E)
from heat exchanger.
16. Burner
Remove seal (F) from the top of the heat
exchanger.
Remove burner (G).
Replace new burner in correct position.
Ensure that burner tab fits correctly into hole.
17. Heat Exchanger
Remove syphon.
17.1
Disconnect flow pipe elbow (H)clip and
move flow pipe to the side.
17.2
Remove plastic nut from the bottom of
the boiler.
17.3
Remove grommet.
17.4
Undo flue connection from sump.
Pull heat exchanger assembly up to clear.
Reassemble and check combustion as
stated in the gas converstion section.
16
17.4
15
F
G
D
E
14.1 14.2
14.3
17.2
17.1
17.3
A
B
C
H
REPLACEMENT OF PARTS
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER BOSCH GREENSTAR Ri
8 716 109 699a (05/05)
44
SERVICING
& SPARES
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