Vaillant VRC 430 Operating and, Operating And Installation Manual

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5 Installation
e
Danger!
Voltage carrying connections!
When working in the control cabinet of the
boiler there is a danger to life by electric shock.
Switch the power supply off before working in
the control cabinet and secure against
re-connection.
Open the control cabinet only when the boiler is
potential-free.
If the controller is installed in the boiler, the electrical
connection is made by the contact between the pin rail
of the controller and the corresponding plug connection
in the boiler.
5.1 Electrical installation of the control when
mounted on the wall
Switch off the power supply to the boiler and secure
against re-connection.
1
2
Fig. 5.1 Electrical connection of the VRC 430 when mounted
on a wall
Key
1 Terminal rail VRC 430
2 Terminal rail boiler
This is how to do it:
⇒
Connect the eBUS cable to the terminal rail of the
VRC 430.
⇒
Connect the eBUS cable to the terminal rail of the
boiler.
h
Note!
The connecting link between terminal 3 and 4
(Fig. 5.1) must not be removed.
When connecting the eBUS cable there is no
need to observe the correct polarity.
Communication is not adversely affected by
swapping the two connections over.
5.2 Electrical installation of the outdoor sensor
VRC 693
Switch off the power supply to the boiler and secure
against re-connection.
1
2
Fig. 5.2 Electrical connection of the VRC 693 outdoor sensor
to the boiler using the edge connector supplied
Key
1 Connection cable to the outside sensor VRC 693
2 6 pole edge connector which is pushed onto the boiler PCB at
location X41
5 Installation