Installation
28
Connection of the return temperature sensor
Strap-on temperature sensor and immersion temperature sensor
For measuring the boiler return
temperature.
Electrical connection
The sensor is inserted in socket
”17A” or ”17B” on the boiler
control.
Check the sensor
1.
Disconnect plug
aJ
A
or
aJ
B
in the terminal compartment of
the boiler control.
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
70
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
Return temperature in
°C / °F
