Pipework Connections - Bosch Worcester Greenstar Danesmoor External Regular ErP+ 12/18 Installation, Commissioning And Servicing Instruction Manual

Installation
5.6

Pipework connections

CAUTION: MAINS SUPPLIES
▶ Isolate the oil & water mains supply before starting
any work and follow all relevant safety precautions.
A
A
SYSTEM
N
M
L
K
Fig. 30 Pipework connections
[A] Return connection 22mm Ø copper (28mm Ø on 25/32 models)
[B] Flow connection 22mm Ø copper (28mm Ø on 25/32 models)
[B1] Flow & optional combined feed and vent 1" BSP
[C] Pressure relief valve
[D] Flue manifold condensate outlet
[E] Condensate trap - supplied
[F] Condensate outlet & flexible push fit connection (21.5mmØ)
[G] Fixing point for optional oil return pipe
[H] Oil isolating valve (10mmØ )
[J] Flexible oil hose and routing
[K] Primary Drain (hose connection)
[L] Pump circuit drain point
[M] Pressure gauge connection
[N] Expansion vessel connection
22
REGULAR
B1
B
C
D
E
F
G
H
J
6720809437-18.1Wo
Water connections
Surplus water may be present due to factory testing.
▶ Remove the transit bungs from the pipework connections on the
boiler.
▶ Ensure all of the pipework is clean.
▶ Align the water pipework and connect.
▶ Check that all the unused sockets have been capped.
Return pipe connection
25/32 Return pipe
6720808218-36.1Wo
Fig. 31 Return pipes
Oil supply connections
▶ Refer to figure 30 and ensure that the isolating valve (H) is closed and
route the oil supply pipe along the right side of the boiler and connect
to the isolating valve (H).
Condensate connection
▶ Connect the 21.5mm polypropylene pipe (not supplied) to the
condensate waste pipe flexible push fit connector [F] figure 22 and
terminate to waste. Do not use any solvents, adhesives or lubricants
when pushing the pipe into the flexible push fit connector [F]
figure 22.
▶ Ensure that the condensate pipe runs away from the boiler at a
constant fall of 52mm (minimum) for every metre.
▶ Carefully pour 500ml of water into the condensate collection [P] to
fill condensate trap.
▶ Check the water is running away and the condensate pipework joints
are water tight.
▶ Check the flue manifold seal (within the rim recess of the flue
manifold access cover) is undamaged and seated correctly.
▶ Check the flue manifold seal (within the rim recess of the flue
manifold access cover) is undamaged and seated correctly.
▶ Refit flue manifold access cover [R] and secure with screws [S].
Greenstar Danesmoor External ErP+ and External System
12/18 & 18/25 Return pipe
ErP+ 6720821725 (2018/04)