PC-30 Filter control unit operating manual Page: 4
Heater connection
Floating contact (e.g. for
boiler control)
230V heater (e.g. circulation
pump)
Solar heating
The floating relay contact between terminals 22 and 23 can be loaded with a voltage of
maximum 230 V and a current of maximum 4 A.
If the heater requires 230 V, it can be connected to terminals U2 and N.
A 230 V solar actuating drive can be connected to terminals U5 and U6 for operating
the solar heater. When operating solar heating, terminal U5 carries the mains voltage and
terminal U6 is voltage-free. If the solar heater is not being operated, terminal U5 remains
voltage-free and terminal U6 carries the mains voltage. These contacts may the loaded
with a maximum 230 V/1.5A.
Level regulation and backflushing control
Bar valves (230V) can be connected for backflushing and rinsing to terminals U3, U4, and
N.
The bridge fitted in the works between terminals 13 and 14 must be removed if level
regulation system NR-12-TRS-2 is connected. The bridge can remain between these
terminals if no level regulation system is connected. Terminals 11 and 12 remain unused
in this case. These terminals carry mains voltage!
The bridge fitted in the works between terminals 3 and 5 must be removed if a
EUROTRONIK-10 system is connected. The bridge can remain between these terminals
if no EUROTRONIK-10 system is connected. Terminals 2 and 4 remain unused in this
case. These terminals carry mains voltage!
Opening any of the contacts between terminals 13 and 14 or 3 and 5 causes filter pump,
dosing systems and heater to be turned off immediately.
Closing any of the contacts between terminals 2 and 4 or 11 and 12 causes forced
switching on of the filter pump, whereas heater and dosing systems are switched off.
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