Kessel SG 400 V Mono Original Operation Manual page 49

4.4.2 Float switch (option)
If float switches are to be used to determine the filling level, check whether you haver a Mono or Duo system and connect accordingly.
Mono float switch
Connect the ends of the float switch's leads to terminal [5a].
[5]
010-532_05
PCB designation
Alarm
Alarm
On
On
Off
O
A = pump switched off
B = switch pump on
D = alarm
Installation and operating manual
Mono
Alarm
On
Ein
[5a]
Aus
Off
[5a]
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