Operating instructions PC-30-Vario filter control unit Page: 9
Connecting the sliding valves for backwashing
A 230V sliding valve for the backwash function can be connected to the terminals
U3 and N.
A 230V sliding valve for the rinsing function can be connected to the terminals U4
and N.
The contacts are rated for a maximum load of 230V, 3A.
Both valves are controlled by the internal backwash controller.
The heating and dosing systems are disabled during the backwash and rinsing
operation.
Connecting a swimming pool cover limit-switch
A limit switch for the swimming-pool cover can be connected to terminals 28 and
29. This switch automatically starts ECO mode when the cover is closed.
The terminals carry a safety extra low voltage.
Temperature sensor
temperature sensor
Swimming pool
30
31
sensor
Solar
32
33
PC-30-Vario
thermowell
Connect
the
swimming-pool
temperature
sensor to terminals 30 and 31. The
temperature sensor is supplied as standard
with a cable length of 1.5m. If required, this
can be extended to a maximum length of 20m
using a twin-core cable (min. cross-section
0.5mm²). Avoid running the sensor lead close
to
mains
cables
to
prevent
potential
interference. The sensors can be connected
either way round (polarity not important).
Since precise temperature control can only be
achieved with good heat transfer between the
temperature sensor and swimming pool water,
an
R
½"
thermowell
(part
no.
3200200003) must be fitted in the piping
system.
In addition, a solar temperature sensor (part
no. 3100000033) can be connected to
terminals 32 and 33 (option). The temperature
sensor is supplied as standard with a cable
length of 20m. If required, this can be
extended to a maximum length of 50m using a
twin-core cable (min. cross-section 0.5mm²).
Avoid running the sensor lead close to mains
