Installation - Grundfos DPI Installation And Operating Instructions Manual

6. Installation

The sensor can be mounted direct on the side of the pump or on a wall by
means of the mounting bracket supplied.
Fig. 3 Connections of the DPI
The DPI cable has four leads:
1 12 - 30 V supply voltage
2 GND (earth lead)
3 Signal lead
Test lead (can be cut off during mounting). This
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lead must not be connected to voltage supply.
The DPI must be supplied with power via a PELV supply
(EN 60335-1) where GND is connected to protective earthing.
Furthermore, connect the mounting bracket and/or one or both
of the capillary tubes to earth.
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Brown
Yellow
Green
White