Connecting The Dcf Receiver; Connecting Accessories; Installing The Vr 90 Remote Control Unit - Vaillant geoTHERM VWS Installation Instructions Manual

6.7

Connecting the DCF receiver

Fig. 6.13 Connecting the DCF receiver
• Wire the DCF receiver as shown in Fig. 5.13.
– left: enclosed external sensor (DCF receiver)
– right: alternative solution with separate external
sensor
An alternative solution with a separate VRC 693 out-
door sensor in necessary if, e.g., no radio reception is
available at the location of the outdoor sensor.
6.8

Connecting accessories

a Caution!
Risk of damage!
Switch off the power before connecting
additional units to the eBUS.
You can connect the following accessories:
- Up to six VR 60 mixer modules to expand the system
by system circuits (factory pre-set as mixer circuits).
- Up to eight VR 90 remote control units to control the
first eight heating circuits.
- vrnetDIALOG 840/2 or 860/2
– Connection in each case to the eBUS terminal
(Fig. 6.7, Item 11), connected in parallel.
6.8.1

Installing the VR 90 remote control unit

The VR90 remote control units communicate with the
heating controller via the eBus. You can connect them
to any interface in the system. You need only make sure
that the bus interfaces are connected to the heat pump
controller.
The structure of the Vaillant system allows you to run
the eBus from component to component (see Fig. 6.9).
Interchanging the cables does not lead to any impair-
ment in communication.
Installation instructions geoTHERM VWS 0020046310_01
Electrical installation 6
Fig. 6.14 Connecting remote control devices
All eBus connector plugs are designed to allow you to
wire at least 2 x 0.75 mm
The use of cable with a cross-section of 2 x 0.75 mm
therefore recommended for eBUS cables.
Setting the bus address
In order to ensure perfect communication between all
components it is necessary to provide the remote cont-
rol unit with an address that matches the heating circuit
to be controlled.
• Set the bus address on the first additional VR 90 re-
mote control unit to "2".
• Set different, sequential bus addresses for any further
remote control units. Observe the VR 90 manual.
Fig. 6.15 Setting the bus address
2
per pigtail.
2
2
is
37