Electrical Installation; Connecting The Vr 68 Solar Module - Vaillant VR 68 Operating And Installation Manual

6 Electrical installation

6 Electrical installation
The electrical connection must be established by a
recognised expert technician who is also responsible for
complying with existing standards and guidelines.
e Danger!
Danger due to live connections!
When working on the open VR 68 mixer module
and also inside the boiler's electronic box
there is a danger of potentially fatal electric
shock.
Switch off the power supply and prevent it from
being unintentionally switched back on before
carrying out work on the VR 68 solar module
and inside the electronic box of the boiler.
Switch off the power supply at the VR 68 solar
module via the mains switch. The LED (green)
on the PCB of the VR 68 solar module must not
light up.
If the casing of the VR 68 solar module is closed, open it
as described in Chapter 5.2.
6.1

Connecting the VR 68 solar module

The mains infeed up to the VR 68 solar module is to be
provided on the customer side.
The eBUS connection to the VR 68 solar module can be
established by taking a branch from any desired point in
the eBUS system (see Fig. 6.1).
Wire the connection of the VR 68 solar module as
shown in Fig. 6.2.
h Note!
The cables required to establish the 230 V
mains connection and e-BUS connection are not
included in the scope of delivery.
16
3
Fig. 6.1 Connection of mains cable and eBUS to system (boiler)
Key
1 Heating unit
2 230 V line on customer side
3 eBUS connection (twin core)
Operating and Installation Manual for Solar Module VR 68 0020054784_00
1
VRC 430 VR 68
2
230 V~