Connection of the components
2.2.1
KHS temperature measurement valve (Fig. 628)
Water sensor (Figure 620 00)
[22] ws (WH)
[23] br (BN)
In the as-delivered state, a ca-
ble bridge is plugged between
Terminals 22 and 23. This must
be removed before connecting
the KHS water sensor.
[18] rt (RD)
[19] rt (RD)
[20] ws (WH)
[21] ws (WH)
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KHS Free Drain (Fig. 688 00)
[22] sw (BK)
[23] br (BN)
In the as-delivered state, a cable
bridge is plugged between Termi-
nals 22 and 23.
This must be removed before
connecting the KHS Free Drain.
Floating alarm relay
[24] 230V (2A) / 24V
[25] OUT (fault)
[26] OUT (operation)
Warning lamp
Signal horn
Monitoring example: Faults
and mains voltage failures are
reported with external voltage to
the network warning lamp, the
warning horn or to the BMS.