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31
Installation
Indications,
functions and options
Messages
Commissioning
Operation and function
System 23: Solar system with east-/west collectors and 2 stores (valve logic)
The controller compares the temperatures at the collector sensors S1 and S5
to the store temperature at sensors S2 and S3. If one of the measured temper-
ature differences is higher than the adjusted switch-on temperature differences,
the corresponding pump (R1 and / or R2) or both pumps will be activated and the
corresponding store will be loaded up to the adjusted maximum temperature via
the valve (R3). The priority logic effects prior loading of store 1.
Sensors
S1
Temperature collector 1
1 / GND
S2
Temperature store 1
base
2 / GND
S3
Free
3 / GND
S4
Temperature store 2
base
4 / GND
S5
Temperature collector 2 5 / GND
Relay
R1
Solar pump collector 1
R1 / N / PE
R2
Solar pump collector 2
R2 / N / PE
R3
Solar valve
R3 / N / PE
R4
Free
R4 /R4
R3
R2
R1
S5
S4
S2
S1
Durchflussrichtung
im stromlosen Zustand
Temp. Sensor
Pt1000
L
R3
R2
R1
GND
S1
S2
S3
S4
S5
VBus
PW
M
1
PW
M
2
N
R4
V40
L'
VBus GN
D
VFS
RPS
Flow direction when
normally open