Connection Variants - Viessmann Vitotronic 200 Installation And Service Instructions For Contractors

Making the LON connection
All Viessmann appliances are connected with RJ45
connectors. The Viessmann LON always requires
cores "1" and "2" plus the screen. The cores are inter-
changeable.

Connection variants

Connection with Viessmann LON cable
A A
C
B
Fig. 29 Installation spacing
Control unit, Vitocom or Vitogate
A
LON cable, 7 m long
B
Terminator
C
Connection with Viessmann LON cable and coupling
A A
C
B D B B
D
Fig. 30 Installation spacing 7 to 21 m
Control unit, Vitocom or Vitogate
A
LON cable, 7 m long
B
Max. 3 cables between 2 devices
Terminator
C
LON coupling
D
Connection with on-site cable and LON plug
A A
D D
C
B
900 m
Fig. 31 Installation spacing
Control unit, Vitocom or Vitogate
A
On-site cable
B
Terminator
C
(cont.)
A
C
B
7 m
≤
A
C
B D B B
D
F
A
D D
C
B
900 m (with LON plug)
≤
Note
When connecting external switching contacts and on-
site components, observe the insulation requirements
of IEC/EN 60335-1.
LON plug
D
Up to 30 subscribers
F
Electrical connections
37