Technical data

142
Components – Vitocontrol-S, VD2/CT3/CM2
Components from the parts list (continued)
Strap-on temperature sensor and immersion temperature sensor
To measure the supply or return temperature.
Connection
See page 77.
Check sensor
1. Remove plug ?, aJA or aJB.
2. Check the sensor resistance at
terminals 1 and 2 of the plug.
Supply or return
temperature
in °C / °F
Resistance in Ω
ΩΩ
Ω
30 / 86
40 / 104
60 / 140
569
592
643
3. Compare measurement with the
actual temperature displayed (for
scanning, see page 109).
Check the installation and replace
sensor, if necessary, in case of
severe deviation.
Specification
Protection: IP 32
Permiss. ambient
temperature:
During operation:
0 to +100˚C
32 to + 212°F
During storage and transport:
–20 to + 70˚C
–4 to + 158°F
5351 340 v1.4
17A or 17B
17A or 17B
30 40 50 60 7070 80 90
540
560
580
600
620
640
660
680
700
720
740
20 100
Resistance in
68 86 104 122 140 158 176 194 212
Supply/Return temperature in °C / °F