Viessmann Vitoligno 250-S Installation And Service Instructions For Contractors page 69

LV plugs
(cont.)
Plug X15: CAN BUS
Fig. 52
Assignment
1
2
3
4
5
Plug A: Fan
a¢Ö
100A
Fig. 53
Assignment Function
1 Fan speed (24 V +)
2 Fan speed input
3 Fan speed (24 V –) GND
Function
CAN BUS 24 V +
CAN BUS 24 V +
CAN BUS high
CAN BUS low
CAN BUS GND
Connection and wiring diagram
X15
D-SUB assignment
Pin 8 + 9
Pin 4 + 5
Pin 7
Pin 2
Pin 3 + 6
100A
Additional information
Hall sensor (red)
Hall sensor (white)
Hall sensor (black)
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