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INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER BOSCH
22
PIPEWORK CONNECTIONS
PIPEWORK CONNECTIONS
8-716-106-256a (08.05)
CAUTION: ISOLATE THE OIL & WATER
MAINS SUPPLY BEFORE STARTING ANY
WORK AND OBSERVE ALL RELEVANT
SAFETY PRECAUTIONS.
A - CH flow/heating vent 1''Ø BSP
B - Primary drain/cold feed 1''Ø BSP
C - CH return 22mmØ copper
D - Oil supply pipe (10mmØ) - not supplied
E - Oil pipe isolating valve
F - Flexible oil pipe
G - Condensate outlet (21.5mmØ) - supplied
H - Flue manifold condensate outlet
J - Condensate pipe - not supplied
K - Condensate trap with wall clamp - supplied
WATER CONNECTIONS:
Remove the transit bungs from the pipework
connections on the boiler.
Note: that surplus water may be present due to
factory testing.
Ensure all pipework is clean.
Align water pipework and connect.
Check that all unused sockets have been capped.
OIL SUPPLY CONNECTIONS:
Route the oil supply pipe (D) along either side
of the boiler as required and connect to the
isolating valve (E). Ensure the valve is closed.
Connect the flexible oil pipe (F) to the isolating
valve (E).
CONDENSATE CONNECTION:
Measure condensate pipe (G), mark and cut
square to length required.
Fit sealing washer to condensate waste pipe
(G) and connect to the flue manifold outlet (H).
Connect 21.5mm polypropylene pipe (J) (not
supplied) to the condensate waste pipe (G) and
condensate trap (K) before terminating to waste.
Secure the water trap (K) with clamp supplied.
Ensure that the condensate pipe runs away from
the boiler at a constant fall of 50mm (min.) for
every metre.
Seal all condensate pipe joints.
Carefully pour 500ml of water into the
condensate collection (N) to fill condensate
trap.
Check the water is running away and the
condensate pipework joints are water tight.
Refit manifold access cover (M) and secure
with screws (L).
IMPORTANT:
The condensate trap must be correctly filled
to prevent the possibility of potentially
harmful flue products escaping via the
condensate pipework.
B
C
1m
50mm (min.)
G
A
D
E
F
H
J
H
K
L
M
N
500ml
