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4.6 Requirements for the electrical connections
Establish the electrical connections in accordance with all local and
national current regulations and standards.
Electrical connections must always be made with the power supply
disconnected and only by qualified installers.
The boiler is completely pre-wired. Never change the internal
connections of the control panel.
Always connect the boiler to a well-earthed installation.
The wiring must comply with the instructions in the electrical diagrams.
Follow the recommendations in this manual.
Separate the sensor cables from the 230 V cables
Make sure the following requirements are met when connecting the cables
to the CB and SCB connectors:
Tab.19 PCB connectors
Wire cross section Stripping length Tightening torque
solid wire: 0.14 – 4.0 mm² (AWG 26 – 12)
stranded wire: 0.14 – 2.5 mm² (AWG 26 – 14)
stranded wire with ferrule: 0.25 – 2.5 mm² (AWG 24 – 14)
8 mm 0.5 N⋅m
4.7 Water quality and water treatment
The quality of the heating water must comply with the limit values in our
Water quality instructions. The guidelines in these instructions must be
followed at all times. In many cases, the boiler and central heating system
can be filled with normal tap water and water treatment will not be
necessary.
4.8 Installation examples
4.8.1 How to use the installation examples
In this chapter, a few installation examples are given. Each example
provides a quick overview of a simple hydraulic set-up, together with the
connections that have to be made and the parameters to be set on the
PCB's.
Important
To use these examples, basic installation knowledge is needed.
This explanation shows schemes for the SCB-10 with an AD249
fitted. On a SCB-02, not all zones are available.
The installation example tables are laid out as follows:
4 Before installation
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