Applications; Installation; Mechanical Installation; Electrical Connection - Grundfos IO 50 SQFlex Installation And Operating Instructions Manual

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If these instructions are not observed, it may result in malfunction or

damage to the equipment.

Tips and advice that make the work easier.

2. Applications

The IO 50 SQFlex switch box is made for solar-powered SQFlex systems and

is an on/off switch for the system power supply.

In addition, the IO 50 functions as a connection point for all necessary cables.

By means of the on/off switch, it is possible to

•

start/stop the pump

•

reset alarms.

The electrical connection and protection must be carried out in accordance with

local regulations.

WARNING

Death or serious personal injury

‐

Before starting any work on the IO 50, make sure that the power

supply has been disconnected and that it cannot be accidentally

connected.

The IO 50 SQFlex must be placed on a firm and stable surface that fits the box.

The electrical connection must be carried out by an authorised electrician in

accordance with local regulations.

Two typical wiring diagrams are shown in section A.1. Appendix:

•

one DC conductor earthed (fig. Wiring diagram, one DC conductor earthed)

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