37
5790 733 - 07
Vitocrossal 300 CA3 Series 2.5 to 6.0 Installation/Service
Making the LON Connection
Installation
Connection with Viessmann LON cable
Installation distance
≤
23 ft. (7 m) long.
Legend
A
Vitocrossal 300 CA3 control unit
(Vitotronic 300 GW6C)
B
LON connecting cable, 23 ft. (7 m) long
C
Terminal end resistor
LON External LON participants
Connection with Viessmann LON cable and coupling
Installation clearance 23 to 69 ft. (7 to 21 m).
Legend
A
Vitocrossal 300 CA3 Control unit
(Vitotronic 300 GW6C)
B
LON connecting cable, 23 ft. (7 m) long,
max. 3 cables between 2 appliances
C
Terminal end
resistor
D
LON coupling
LON External LON participants
Connection with on-site cable and LON plug
Installation distance
≤
3000 ft. (900 m) (with LON plug).
Legend
A
Vitocrossal 300 CA3 control unit
(Vitotronic 300 GW6C)
B
On-site cable
C
Terminating resistor
D
LON plug
F
Up to 30 participants
LON External LON participants
Connection with LON cable, on-site cable and LON
junction box
Installation distance
≤
3000 ft. (900 m)
(with LON junction box).
Legend
A
Vitocrossal 300 CA3 control unit
B
LON connecting cable, 23 ft. (7 m) long
C
Terminal end
resistor
D
LON Connecting plug
E
On-site cable
F
Up to 30 participants
LON External LON participants
Establishing a LON-Connection
The Viessmann LON is designed for the BUS-topology “line”
with double-sided terminating resistors (Accessories). For
further information please see “Viessmann LON-Handbuch“
at www.viessmann.de/lon. The transfer distances for LON
are dependent upon the electrical characteristics of the cable.
For this reason only the specified cable types may be used.
Only one type of cable may be used within a LON.
For details on Vitotronic 300 GW6C LON connections
refer to page 86.
Types of cable (on-site):
2-core cable, CAT5, screened
JY(St)Y 2 x 2 x 0.8 mm (Telephone cable)
The requirements for cables and operation of the
LON interface FTT 10-A must be observed
(see www.echelon.com).
All Viessmann equipment is connected via RJ45 plugs.
Cores “1” and “2” and screening are required for the
Viessmann LON. The cores are interchangeable.
