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
