Worcester GREENSTAR 12i Instruction Manual page 24

5
D
6
A C
22mm 22mm
24
BOILER CONNECTIONS
A
A
B
C
B
22mm
B
H
E
G
F
G
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR 12i/24i System
BOILER CONNECTIONS
CAUTION: ISOLATE TH E MAI NS GAS
SUPPLY BEFORE STARTING ANY WORK
AND OBSERVE ALL RELEVANT SAFETY
PRECAUTIONS.
GAS AND WATER CONNECTIONS:
A - Flow (22mm), B - Return (22mm),
C - Gas inlet (22mm).
5. Lower the control panel into the service
position by removing the screw (D) from the
retaining bracket.
6. Make connections to the heating system.
Connect the gas supply to the boiler gas
cock 22mm compression.
7. Connect the expansion vessel flexible
pipe to the hydraulic manifold situated left of
the pump. It is necessary to remove and
discard the orange plastic blanking plug (E)
from the connection at the hydraulic
manifold before securing the expansion
vessel flexible pipe (F) in place with the wire
retaining clip (G).
8. Connect the pressure relief drain pipe to
15mm compression joint (H) using the nut
and olive supplied in the hardware literature
pack.
7
8 716 115 167b (03/2009)