Making The Lon Connection - Viessmann Vitogate 300 Installation And Service Instructions For Contractors

Installation sequence
Installing the Vitogate 300
A
- -
+ +
Output DC
DC OK
L(+)N(-)
Fig. 1
Power supply unit (standard delivery)
A
Vitogate 300
B
Vitogate 300, type BN/MB and its power supply unit
are suitable for mounting on a support rail (TS 35 to
EN 50 022: 35 x 15 and 35 x 7.5) inside control panels.

Making the LON connection

The Viessmann LON is designed for "Line" BUS topol-
ogy with a terminator at both ends (accessories). Fur-
ther information can be found in the "Viessmann LON
manual"; see www.viessmann.de/lon.
The transfer distances for LON are subject to the elec-
trical properties of the respective cable. For this rea-
son, only use the specified cable types. Use only one
cable type within each LON.
Cable types (on site):
■ 2-core cable, CAT5, screened
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).
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. The installation is therefore reverse polar-
ity protected.
6
B
100
Note
When connecting devices and routing cables, observe
the requirements of safety category II. That is 8.0 mm
air and creep paths or 2.0 mm insulation thickness
against 'live' components.
Ensure the safe electrical separation of all on-site com-
ponents (incl. PC/laptops) conforms to EN 60 335 or
IEC 65.