Installation Examples - Grundfos SCALA2 Installation And Operating Instructions Manual

3.5 Installation examples

Fittings, hoses and valves are not supplied with the pump.
3.5.1 Mains water pressure boosting
2
7
10
5
3
Fig. 4 Mains water pressure boosting
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
6
inlet pressure can exceed 10 bar (145 psi)
Optional pressure-relief valve on the outlet side if the
7 installation cannot stand up to a pressure of 6 bar (85
psi)
Drip tray. Install the pump on a small stand to avoid the
8
ventilation holes from being flooded.
9 Pressure gauge
10 Mains water pipe
3.5.2 Suction from a well
1
3
4
Fig. 5 Suction from a well
Pos. Description
1 Highest tapping point
2 Isolating valve
Inlet filter.
If the water can contain sand, gravel or other debris,
3
please install a filter on the inlet side to protect the pump
and installation.
4 Foot valve with strainer
H1 Maximum suction lift is 8 m (29 ft)
4
1
3 9 4
6 2
8
2
Pos. Description
H2 Inlet pipe must be submersed at least 0.5 m (1.64 ft)
3.5.3 Suction from freshwater tank
min1
7
6
Fig. 6 Suction from freshwater tank
Pos. Description
1 Highest tapping point
2 Pipe hangers
3 Isolating valve
4 Flexible hoses
5 Drain to sewer
6 Foot valve with strainer
7 Freshwater tank
1
2
3 4
5