Grundfos CU 300 Installation and Operating Instructions - Geotech

3.4 System sizing
In normal installations with the CU 300 and an SQE
pump set to constant pressure control, the required
tank size is 8 litres. Bigger tanks can be used without
causing any problems.
3.5 Installation
3.6 Location
The installation must be designed for the
maximum pump pressure.
Before starting any work on the CU 300,
make sure that the electricity supply has
been switched off and that it cannot be accidentally
switched on.
The CU 300 can be placed both indoors and outdoors.
It must not be exposed to direct sunlight.
3.7 Mounting the CU 300
The CU 300 is designed for wall mounting.
The box has six mounting holes (ø4), see fig. 12
(dimensions stated in mm).
The CU 300 must be mounted:
• horizontally (see fig. 12) to allow condensed water,
if any, to escape.
• on a plane surface to avoid deformation of the
box.
Fig. 12
104.5
104.5
TM01 2824 2498
100
140.5
The CU 300 is supplied with a set of gaskets for the
Pg screwed connections.
The gaskets are to be used for the connection of
cables/wires to ensure tight connections (IP 55) and
cable relief.
12