Lon Communication Module; Lon Connecting Cable For Data Exchange Between Control Units; Extension Of The Connecting Cable; Terminator (2 Pce.) - Viessmann VITOLADENS 300-W Technical Manual

Control unit
(cont.)
– Semi-conductor relay 1
– Relay 2
– Total
Temperature sensor (DHW cylinder/heating water buffer cylinder/
combi cylinder)
Part no. 7438 702
■ For DHW circulation diversion for systems with 2 DHW cylinders
or
■ for return changeover between the boiler and the heating water buf-
fer cylinder
or
■ for heating additional consumers

LON communication module

Part no. 7179 113
For connecting one Vitotronic 200-H heating circuit control unit com-
prising one electronic PCB.

LON connecting cable for data exchange between control units

Part no. 7143 495

Extension of the connecting cable

■ Installation spacing 7 to 14 m:
– 2 connecting cables (7.0 m long)
Part no. 7143 495
– 1 LON coupling RJ45
Part no. 7143 496
■ Installation distance 14 to 900 m with plug-in connectors:
– 2 LON plug-in connectors
Part no. 7199 251
– 2-core cable:
6
CAT5, screened
or
Solid conductor AWG 26-22 / 0.13 mm
Conductor AWG 26-22 / 0.14 mm
7 4.5 mm - 8 mm
on-site
■ Installation distance 14 to 900 m with junction boxes:
– 2 connecting cables (7.0 m long)
Part no. 7143 495
– 2-core cable:
CAT5, screened
or
Solid conductor AWG 26-22 / 0.13 mm
Conductor AWG 26-22 / 0.14 mm
7 4.5 mm - 8 mm
on-site
– 2 LON sockets RJ45, CAT6
Part no. 7171 784

Terminator (2 pce.)

Part no. 7143 497
To terminate the LON BUS at the first and last control unit.
VIESMANN
66
1 (1) A, 230 V~
1 (1) A, 230 V~
max. 2 A
2 2
- 0.32 mm ,
2 2
- 0.36 mm
2 - 0.32 mm 2 ,
2 - 0.36 mm 2
On-site extension of the connecting lead:
■ 2-core lead, length max. 60 m with a cross-section of 1.5 mm
per)
■ Never route this lead immediately next to 230/400 V cables
Specification
Lead length
IP rating
Sensor type
Permissible ambient temperature
– during operation
– during storage and transport
Cable length 7 m, fully wired.
VITOLADENS 300-W/VITOLADENS 333-F
2
(cop-
3.75 m
IP 32 to EN 60529; ensure
through design/installation
NTC 10 kΩ at 25 °C
0 to +90 °C
−20 to +70 °C