Solarbayer PROMATIC D10 Bedienungsanleitung Seite 63

EXPANDING THE SYSTEM ON MULITPLE HEATING CIRCUITS
When using BUS connection, we can expand the system whit many PROMATIC D10,
D20 controllers. The master controller controls the heat sources, while the other control-
lers just control the heating circuits.
ELECTRICAL WIRING SCHEME
COM
BUS CONNECTION STATUS DISPLAY
LEGEND:
PROMATIC
D10, D20
All connections on BUS are with two wires, the common connection is GND.
master intermediate slave
controller
COM COM2
BUS
Room unit
DD2
controller
COM COM2
63
last
slave controller
COM COM2
COM
BUS
Installation manual