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Installation
Low voltage max. 12VAC/DC connection in the left-hand
terminal compartment!
Terminal: Connection for:
S1 Sensor 1 collector
S2 Sensor 2 storage low
S3 Sensor 3 storage top
S4 Sensor 4 ow secondary
S5 not used
S6 0..10V / PWM (s. 7.9.2)
+ not used
- terminal sensor -
Connection of sensor earth (S1-S4) and 0..10V / PWM
earth to terminal block sensor - .
The polarity of the sensors is freely selectable.
Mains voltages 230VAC 50-60Hz Connection in the right-
hand terminal compartment!
Terminal: Connection for:
R1 Pump 1 L (speed.)
N Pump 1 N (speed.)
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 connected to the PE
metal terminal block!
Caution
Actuating direction of valve:
R2 on / Valve on = Charge storage sensor 3
R2 off / Valve off = Charge storage sensor 2
Relay R1: For speed control of standard pumps,
minimum load 20VA
The VFS sensor (optional) has to connected to
the socket on the board (Fig. C2.2).
D.21. - Solar with heat exchanger, valve and 2 zone storage
Caution
When selecting this hydraulic variant, the default values for the following
settings change:
5.6 T R1: ΔT 12°C / ΔT-Off 7°C
5.10 Priority sensor S3
7.9 Speed control: V4
7.10 Relay 3: R3 is switched with R1
with a delay of 30 sceonds
Sensor side
max. 12V
Caution
Mains side
230VAC
M
2
Danger
Caution
VFS sensor must be installed in the return ow
22


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