Location - Grundfos PM 2 Montage- Und Betriebsanleitung

Fig. 1 Rotary outlet connection

3.1 Location

The installation location must be clean and well
ventilated.
The PM 2 must be positioned so that it is protected
from rain and direct sunlight.
The PM 2 can be installed in systems with or without
a pressure tank. See fig. 2.
Fig. 2 Installation example
The unit can be fitted directly to the pump discharge
port or between the pump and the first tapping point.
Pos. A in fig. 2:
It is recommended to install the unit so that the
height between the unit and the highest tapping point
does not exceed the values in the table below.
Start pressure set
[bar]
1.5*
2.0
2.5
3.0
3.5
4.0
4.5
5.0
* Default setting.
See section 7.1 Start/stop according to water
consumption.
Pos. B in fig. 2:
To achieve correct operation, the pump should at
least be able to provide the discharge pressures in
the table below.
Minimum discharge pressure
Start
Start/stop
pressure set
according to
water
consumption*
[bar] [bar]
1.5* 1.9
2.0 2.4
2.5 2.9
3.0 3.4
3.5 3.9
4.0 4.4
4.5 4.9
5.0 5.4
* Default setting.
See section 7.1 Start/stop according to water
consumption.
** See section 7.2 Start/stop with 1 bar differential
pressure.
Maximum height
[m]
11
16
21
26
31
36
41
46
Operating mode
Start/stop with
1 bar
differential
pressure**
[bar]
2.9
3.4
3.9
4.4
4.9
5.4
5.9
6.4
7