Strap-On Temperature Sensor/Immersion Temperature Sensor - Viessmann VITOTRONIC 300 GW2 Installation And Service Instructions Manual

Additional information
System components
Strap-on temperature sensor and immersion temperature sensor
2
740
720
700
680
660
640
620
600
580
560
540
20 30 40
68 86 104
Supply temperature in °C / °F
102
(continued)
2
50 60 70 80 90
122 140 158 176 194 212
100
For measuring the supply temperature.
Electrical connection
The sensor is inserted in socket ?
on the control unit.
Check the sensor
1. Disconnect plug ? in the
terminal compartment.
2. Measure resistance of sensor at
terminal "2" of the plug.
Supply Resistance
temperature in 
in °C / °F
30 / 86 569
40 / 104 592
60 / 140 643
3. Compare the value measured with
the current temperature. If the
value differs significantly, check
installation and, if necessary,
replace sensor.
Technical data
Degree of protection: IP 32
Ambient temperature
during operation:
0 to + 100°C
32 to + 212°F
during storage and transport:
–20 to + 70°C
- 4 to + 158°F