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Upstream line-in kit 35/42/54mm
The upstream line-in kit includes:
1 - inline strainer
2 - pressure gauge (upstream)
3 - double check valve
4 - pressure reducing valve
5 - pressure gauge (fitted to pressure reducing valve)
6 - Mainsboost vessel connector (see step 1)
7 - Isolation Valve (see step 1)
The above components must be installed in the correct order to ensure safe and
satisfactory system operation.
NOTE: It is good practice to install a drain port between the isolation valve and the
vessel.
1 Inline strainer
2 Pressure gauge (upstream)
3 Double check valve
4 Pressure reducing valve
5 Pressure gauge
6 Mainsboost vessel connector
7 Lever isolating valve
Pipe
Size
Minimum pipe length required to install
the upstream line-in kit (mm) (A)
22 mm 480 mm
28 mm 580 mm
35 mm 630 mm
42 mm 735 mm
54 mm 820 mm
DIRECTION OF FLOW
Fig. 24b
A
4
3
2
1
5
Inlet
Outlet
1
2
(T-piece
not supplied
4
5
Flexible
hose
6
7
Flexible
hose
3
Fig. 23b
Push fit elbow
(not supplied)
T-piece (not supplied)
