Viessmann VITOTRONIC 100 Installation And Service Instructions Manual page 131

Components from the parts list
Contact temperature sensor and immersion temperature sensor
For recording the return temperature.
740
720
700
680
660
640
620
600
580
560
540
20 30 40 50 60 70 80 90 100
Return temperature in ºC
(cont.)
Connection
See page 66.
Checking sensor
1. Pull plug aJ.
2. Check the sensor resistance at
terminals "1" and "2" of the plug.
3. Compare the test result with the
actual temperature (for scanning,
see page 107).
Check the installation and replace
sensor, if necessary, in case of
severe deviation.
Specification
Protection:
Permiss. ambient
temperature
H during operation:
H during storage and
transport:
Components
IP 32
0 to +100 ºC
20 to + 70 ºC
131