Making The Lon Connection - Viessmann Vitogate 300 Nstallation And Service Instructions

Vitogate 300 Installation and Service

Making the LON Connection

Connections
The Viessmann LON is designed for "Line" BUS topology
with a terminal end resistor at both ends (accessories).
Further information can be found in the "Viessmann LON
manual"; see www.viessmann.de/lon.
The transfer distances for LON are subject to the electrical
properties of the respective cable. For this reason, only
use the specified cable types. Use only one cable type
within each LON.
Cable types (on site):
H 2-core cable, CAT5, screened
H JY(St)Y 2 x 2 x 0.8 mm (telephone cable)
Observe the cabling requirements for the operation of
the LON interface FTT 10-A (see www.echelon.com).
Connection with LON cable
Installation spacing ≤23 ft. (≤7 m)
Connection with LON cable and LON coupling
Installation spacing 23 to 69 ft. (7 to 21 m)
Connection with on-site cable and LON plug
Installation spacing ≤3000 ft.(≤900 m) (with LON connector)
Connection with LON cable, on-site cable and LON socket
Installation spacing ≤3000 ft.(≤ 900 m) (with LON sockets)
All Viessmann appliances are connected with RJ45
connectors. The Viessmann LON always requires
cores "1" and "2" plus the screen. The cores are
interchangeable.
The installation is therefore reverse polarity protected.
Note: When connecting devices and routing cables,
observe the relevant safety requirements.
Ensure the safe electrical separation of all on-site
components (including PC/laptops).
Legend
A Vitotronic control unit
B Vitogate 300
C Terminal end resistor
D LON cable, 23 ft. (7 m) long
Legend
A Vitotronic control unit
B Vitogate 300
C Terminal end resistor
D LON cable, 23 ft. (7 m) long:
Max. 3 cables between 2 devices
E LON extension jack
Legend
A Vitotronic control unit
B Vitogate 300
C Terminal end resistor
D RJ45 male plug end
E On-site cable (field supplied)
F Up to 99 participants
Legend
A Vitotronic control unit
B Vitogate 300
C Terminal end resistor
D LON cable, 23 ft. (7 m) long
E On-site cable (field supplied)
F LON sockets
G Up to 99 participants
Connections
13