BOILER CONNECTIONS
IMPORTANT: THE FOLLOWING MUST BE
COMPLETED BEFORE THE BOILER IS
MOUNTED ON THE WALL MOUNTING
FRAME
BOILER CONNECTIONS
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER BOSCH GREENSTAR 12i System/24i System
8 716 107 375a (02/05)
21A
IN
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1
A
ASSEMBLY OF THE INTERNAL HOT WATER
RETURN PIPE TO THE BOILER
Using the boiler packaging as protection
turn the boiler on its left hand side to
facilitate assembly of the hot water return
pipe.
1
. Move the control panel into the service
position by removing the screw (A) from the
retaining bracket.
2
. Loosen the two retaining screws (B) to free
the back clamping plate on the hydraulic block
(C) shown in 3.
3
. Remove the brass bung assembly (D) from
the hydraulic block by removing the screw and
sliding it free from the flange on the clamping
plate (C). Make sure that the other brass
bung assembly (E) is retained in place.
4
. Remove the copper pipe (F) from the
Optional Integral Diverter Valve Kit and feed the
flat end of the pipe through the rear of the boiler
as shown. Before fitting the pipe, check that the
seal is in position on the plastic moulding. Slide
the flat end of the pipe (G) under the flange (H)
on the hydraulic block clamping plate (C)
making sure that it is located correctly.
Re-tighten the clamping plate by re-tightening
the two screws (B) as shown in fig:
2.
•
4.1
On completion the pipe assembly
should look as shown.
B
2
C
3
D
E
4
F
G
H
C
4.1
