Grundfos SCALA2 - Page 11

5.6.1 Mains water pressure boosting
In some countries, boosting from the city water mains is
prohibited. Please follow local regulations regarding this
application.
49
1
37
2
5
10
6
2
3
8
TM064347
Mains water pressure boosting, SCALA2
Pos. Description
1 Highest tapping point
2 Pipe hangers and supports
3 Isolating valves
4 Flexible hoses
5 Bypass valve
6
Optional pressure-reducing valve on the inlet side if the
pressure can exceed 10 bar (145 psi).
7
Optional pressure-relief valve on the outlet side if the instal-
lation cannot withstand a pressure of 6 bar (87 psi).
8
Drip tray. Install the pump on a small stand to prevent the
ventilation holes from being flooded.
9 Pressure gauge
10 Mains water pipe
5.6.2 Suction from a well
H2 H1
6
5
4
2
3
1
TM064349
Suction from a well
Pos. Description
1 Highest tapping point
2 Isolating valve
3 Flexible hoses
4 Pipe support
5
Inlet filter.
If the water may contain sand, gravel or other debris,
please install a filter on the inlet side to protect the pump
and installation.
6 Foot valve with strainer (recommended).
H1 Maximum suction lift is 8 m (26 ft).
H2 Inlet pipe must be submersed at least 0.5 m (1.64 ft).
11
English (GB)