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82
Victorum Combi
1
2
GND
DI7
B2
B1
B4
B3
Zone 2 Sensor
Controller
Electrical
Connecting the Touchscreen
The touchscreen requires a separate communication
cable from the power supply cable. It is recommended
to use Belden 8723 or equivalent, as this cable type
incorporates a drain wire which is imperative for clean
communication between the touchscreen and the
controller.
The touchscreen communication cable is connected
to ‘Rx+’, ‘Rx-’ and ‘Gnd’ on the ‘Display port’ of the
controller. The cable core colours must be matched on
the rear of the touchscreen as the communication is
polarity sensitive.
It is important that at the electrical enclosure end, the
drain wire is connected to the metal chassis via the
‘Fast-On’ tab provided. At the touchscreen end, the
drain wire is to be wrapped around the outer sheath of
the cable and insulated with insulating tape to isolate
the connection. The drain is used to eliminate any
electrical noise from the communication.
Connecting the Zone 2 Room Sensor
The second zone sensor is used to sense the
temperature in the second heating zone of the
dwelling.
All the installation guidelines for the touchscreen apply
to the Zone 2 room sensor- installation height, avoiding
heat sources, etc.
The second zone sensor requires a two core 0.75mm2
cable and it is not polarity sensitive.
The sensor is connected to ‘B4’ and ‘Gnd’ on the
controller.
+
-
GND (o)
Rx +(+)
Rx-(o)
+
-
Touchscreen
Transformer (T1)
Controller
GND (o)
Rx +(+)
Rx-(-)
