Grundfos SCALA2 Instructions Manual 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.
2
7
10
5
3
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
Optional pressure-reducing valve on the inlet side if the
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pressure can exceed 10 bar (145 psi).
Optional pressure-relief valve on the outlet side if the instal-
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lation cannot withstand a pressure of 6 bar (87 psi).
Drip tray. Install the pump on a small stand to prevent the
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ventilation holes from being flooded.
9 Pressure gauge
10 Mains water pipe
1
3 9 4
6 2
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5.6.2 Suction from a well
2
1
5
6
Suction from a well
Pos. Description
1 Highest tapping point
2 Isolating valve
3 Flexible hoses
4 Pipe support
Inlet filter.
If the water may contain sand, gravel or other debris,
5
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).
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4
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