14
Low voltage
max. 12VAC/DC connection in
the left-hand terminal compartment!
Terminal: Connection
for:
S1 (2x)
Sensor 1 fl ow
S2 (2x)
Sensor 2 storage
S3 (2x)
Sensor 3 (optional)
The polarity of the sensors is freely
selectable.
Mains voltages 230VAC 50-60Hz
Connection in the right-hand terminal com-
partment!
Terminal: Connection
for:
R2 not
used
N not
used
L
Mains phase conductor L
N
Mains neutral conductor N
R1
stop valve phase conductor L
N
stop valve neutral conductor N
The PE protective conductor must be
connected to the PE metal terminal
block!
Low voltage
max. 12VAC/DC connection in
the left-hand terminal compartment!
Terminal: Connection
for:
S1 (2x)
Sensor 1 control
S2 (2x)
Sensor 2 reference
S3 (2x)
Sensor 3 (optional)
The polarity of the sensors is freely
selectable.
Mains voltages 230VAC 50-60Hz
Connection in the right-hand terminal com-
partment!
Terminal: Connection
for:
R2 not
used
N not
used
L
Mains phase conductor L
N
Mains neutral conductor N
R1
Pump phase conductor L
N
Pump neutral conductor N
The PE protective conductor must be
connected to the PE metal terminal
block!
Brief description of switching
function: The
Δ
T function sensor 1
> sensor 2 switches the pump to
relay R.
Installation
D.8 Stop
valve
D.7 Universal
Δ
T controller
Sensor side
max. 12V
Mains side
230VAC
Danger!
Caution!
Sensor side
max. 12V
Mains side
230VAC
Danger!
Caution!