5Installation Manual for VR 32 GB
auroMATIC 620: If two to six boilers are con-
nected in a cascade, a VR 32 bus coupler is
required for each boiler to connect it to the
eBUS (Western socket X30). You can connect
up to eight VR 32 bus couplers to the control-
ler. The VR 32 bus coupler is installed directly
in the busbar of the boiler. It communicates
with the controller via the eBUS. A unique bus
address must be set on the VR 32 using the
knob. All other settings are made on the main
controller.
2.4 Scope of delivery and accessories
• Check the scope of delivery of the bus
coupler.
- 1 VR 32 bus coupler board
- 1 Connection terminal for eBUS line
- 2 Connection lead for boiler (RJ9 - RJ9)
- 1 Mounting clip
2.5 Connections and function elements
1 3
2
Fig. 2.1 Connections
Key:
1 Slot for connecting to the boiler
2 Address switch
3 Bus line terminal
Description of the appliance 2
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