11
Installation
3
3
Low voltage
max. 12VAC/DC
connection in the left-hand terminal
compartment!
Terminal: Connection
for:
-
Jumper terminal block S-
S1
Sensor 1 outdoor
S2
Sensor 2 heating circuit buffer
S3
Sensor 3 not used
S4
Sensor 4 glycol
fl
ow
S5
Sensor 5 glycol return
S6
Sensor 6 RT21
+
remains unused
Z1
Option: RS485 a
Z2
Option: RS485 b
Use terminal block S- for connec-
ting the sensor earths of S1-S6.
The polarity of the sensor is freely
selectable. S6 RT21 can be connec-
ted as an option.
3.2.4 Electrical connection for hydraulics 2
„Heat pump with heating circuit buffer“
Mains voltage
230VAC 50-60Hz
connection in the right-hand terminal
compartment!
Terminal: Connection
for:
N
Jumper terminal block N
L
Mains phase conductor L
R1
Heating circuit pump
R2 not
used
R3
Buffer charging pump
R4 Glycol
pump
R5 Compressor
R5I
Phase conductor L for R5
Use terminal block N to connect all
neutral conductors N!
The PE protective conductor must
be connected to the PE metal termi-
nal block!
Low voltage
max. 12VAC/DC
connection in the left-hand terminal
compartment!
Terminal: Connection
for:
-
Jumper terminal block S-
S1
Sensor 1 outdoor
S2
Sensor 2 heating circuit
S3
Sensor 3 domestic hot
water storage tank
S4
Sensor 4 glycol
fl
ow
S5
Sensor 5 glycol return
S6
Sensor 6 RT21
+
remains unused
Z1
Option: RS485 a
Z2
Option: RS485 b
Use terminal block S- for connecting
the sensor earths of S1-S6.The
polarity of the sensor is freely selec-
table.S6 RT21 can be connected as
an option.
3.2.5 Electrical connection for hydraulics 3
„Heat pump with heating HW“
Mains voltage
230VAC 50-60Hz
connection in the right-hand terminal
compartment!
Terminal: Connection
for:
N
Jumper terminal block N
L
Mains phase conductor L
R1
Heating circuit pump
R2
Domestic hot water pump
R3 not
used
R4 Glycol
pump
R5 Compressor
R5I
Phase conductor L for R5
Use terminal block N to connect all
neutral conductors N!
The PE protective conductor must
be connected to the PE metal termi-
nal block!