Viessmann VITOTRONIC 300 GW2, Инструкция по установке и обслуживанию

Страница: 103 / 146

Additional information
103
System components
(continued)
Strap-on temperature sensor and immersion temperature sensor
For measuring the return temperature.
Electrical connection
The sensor is inserted in socket
”17A” or ”17B” on the control unit.
Check the sensor
1.
Disconnect plug aJ A or aJ B in
the terminal compartment.
2.
Measure resistance of sensor at
terminals ”1” and ”2” of the plug.
Return
temperature
in °C / °F Resistance
in

30 / 86
40 / 104
60 / 140 569
592
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
5285
941
-
0
1
17A or 17B
17A or 17B
30 40 50 60 70 80 90
540
560
580
600
620
640
660
680
700
720
740
20 100
Resistance
in

Return temperature in °C / °F
68 86 104 122 140 158 176 194 212