Technical data

86
Installation – Vitocontrol-S, VD2/CT3/CM2
Making the LON connection
The Viessmann LON system is designed for the Line BUS topology with end of line resistors on both ends.
Connection with Viessmann LON cable
A Control unit or Vitocom
B LON cable, Part No. 7143 495
C End of line resistor (standard
delivery of Vitocontrol-S,
VD2/CT3/CM2)
Part No. 7143 497
Connection with


 Viessmann LON cable and


 Viessmann LON coupling
A Control unit or Vitocom
B LON cable, Part No. 7143 495,
(max. 3 cables between
two devices)
C End of line resistor (standard
delivery of Vitocontrol-S,
VD2/CT3/CM2)
D LON extension jack,
Part No. 7143 496
5351 340 v1.4
7 m / 23 ft
C
B B
C
A A A
7 m / 23 ft
C
B
C
B
D
B
D
B
DD
B
A A A
B
7 m / 23 ft
7 m / 23 ft 7 m / 23 ft
7 m / 23 ft 7 m / 23 ft
7 m / 23 ft