21
Installation
Low voltage max
. 12VAC/DC connection in
the left-hand terminal compartment!
Terminal: Connection
for:
S1
Sensor 1 collector 1
S2
Sensor 2 store 1 bottom
S3
Sensor 3 secondary fl ow
S4
Sensor 4 store 1 top
S5
Sensor 5 primary fl ow
S6
Sensor 6 (AntiLegionella,
see
7.7)
+ Not
used
- Jumper
terminal
block-
Connection of sensor earths (S1-S6) via
terminal block sensor-
The polarity of the sensors is freely se-
lectable.
Mains voltages
230VAC 50-60Hz Connec-
tion in the right-hand terminal compartment!
Terminal: Connection
for:
R1
pump 1 L (Drehzahl)
N
pump 1 N
L
Mains phase conductor L
N
Mains neutral conductor N
R2
zone valve L
N
zone valve N
R3
pump 2 L
N
pump 2 N
The PE protective conductor must be con-
nected to the PE metal terminal block!
Brief description:
∆
T R1 (6.7) switches the primary pump at
relay R1.
∆
T R2 (6.8) switches the secondary pump at
relay R3 (also S5 has to be warmer than S3)
Valve at R2 switches following these condi-
tions:
S3 < Priority sensor=Load towards se-
condary sensor
S3> priority sensor=Load towards primary
sensor
Relay R1: For speed control of standard pumps, minimum load 20VA
When selecting this variant, S4 is automatically set as priority sensor.(see 5.11)
Caution
Caution
D.11
Solar 2 zones storage tank+ heat exchanger
Caution
Danger
Mains side
230VAC
Sensor side
max. 12V