Vaillant VR 81, Supplement Manual

Page: 21 / 28

Assembly 8
Electrical installation 9
9.1 Connecting the remote control unit
Communication with the boiler is achieved via a
2-lead bus line (eBUS).
The eBUS can be connected to the VR 81 remote control
unit via a branch at any desired location in the eBUS
system (see Fig. 9.1).
1
4
2 3
Fig. 9.1 System schematic Establishing connection between
eBUS and system
17 Installation instructions VR 81 0020044392_00