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BOILER CONNECTIONS
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR 24 i junior/28 i junior
8 716 107 336b (11/05)
22
INSTALLATION
BOILER CONNECTIONS
CAUTION: ISOLATE THE MAINS GAS
SUPPLY BEFORE STARTING ANY WORK
AND OBSERVE ALL RELEVANT SAFETY
PRECAUTIONS.
A
E
D
B
C
22mm 15mm 22mm 15mm 22mm
5
F
H
GAS AND WATER CONNECTIONS:
A - CH flow (22mm), B - CH return (22mm),
C - Gas inlet (22mm), D - Mains water inlet
(15mm), E - DHW outlet (15mm)
5. Lower the control panel into the service
position by removing the screw (F) from the
retaining bracket.
6. Make connections to the heating system.
Connect the gas supply to the boiler gas
cock 22mm compression.
Connect mains water in and DHW out.
7. Connect the expansion vessel flexible
pipe to the hydraulic manifold situated left of
the pump. It is necessary to remove and
discard the gray plastic blanking plug (G)
from the pressure vessel connection at the
hydraulic manifold before securing the
expansion vessel flexible pipe (H) in place
with the wire retaining clip ( I ) .
8. Connect the pressure relief drain pipe to
15mm compression joint (J) using the
compression nut and olive supplied in the
hardware literature pack.
6
7
G
I
I
H
H
J
A E C D B