– Semi-conductor relay 1
1 (1) A, 230 V~
– Relay 2
1 (1) A, 230 V~
– Total
max. 2 A
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
On-site extension of the connecting lead:
■ 2-core lead, length max. 60 m with a cross-section of 1.5 mm
2
(cop-
per)
■ Never route this lead immediately next to 230/400 V cables
Specification
Lead length
3.75 m
IP rating
IP 32 to EN 60529; ensure
through design/installation
Sensor type
NTC 10 kΩ at 25 °C
Permissible ambient temperature
– during operation
0 to +90 °C
– during storage and transport
−
20 to +70 °C
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
Cable length 7 m, fully wired.
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:
CAT5, screened
or
Solid conductor AWG 26-22 / 0.13 mm
2
- 0.32 mm
2
,
Conductor AWG 26-22 / 0.14 mm
2
- 0.36 mm
2
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
2
- 0.32 mm
2
,
Conductor AWG 26-22 / 0.14 mm
2
- 0.36 mm
2
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.
Control unit
(cont.)
66
VIESMANN
VITOLADENS 300-W
/
VITOLADENS 333-F
6
5822 425 GB
