Vaillant VR 34 - Electrical Installation; External Controller Connection

9GBInstallation instructions - Interface 0-10 V VR 34 0020017083_02
5 Electrical installation
d
Danger!
Risk of fatal electric shock from
touching live connections. Before per-
forming work on the device, switch
off the power supply and secure it
against being switched on again.
Using the mains switch on the boiler
is not sufficient to isolate all termi-
nals on the system.
Connecting the 0-10 V interface
1
Fig. 5.1 Connecting the 0-10 V interface
- Connect the external BEMS controller (1) to
the VR 34 0-10 V interface. Note the polarity
of the connections when doing this.
- The control signal from the BEMS controller
must be connected to terminal "I". Connect
the earth cable to "
".
Electrical installation 5