System 20: Solar system with store loading in layers and east-/west collectors
The controller compares the temperatures at the collector sensors S1 and S5
to the store temperature at sensor S2 and S3. If one of the measured temper-
ature differences is higher than the adjusted switch-on temperature difference,
the corresponding pump (R1 and / or R2) will be activated and the corresponding
store zone will be loaded up to the adjusted store maximum or set temperature
respectively via the valve (R3). The priority logic effects prior loading of the upper
zone of the store.
Hydraulic variant 1
Hydraulic variant 2
Sensors
S1 Temperature collector 1 / GND
S2 Temperature store
base
2 / GND
S3 Temperature store top 3 / GND
S4 Free 4 / GND
S5 Temperature collec-
tor 2
5 / GND
S6 Free S6
Relay
R1 Solar pump collector R1 / N / PE
R2
Solar pump collector 2
R2 / N / PE
R3 Valve solar circuit R3 / N / PE
R4 Free R4 /R4
R3
R2R1
S5
S2
S1
VBus
VBus
S5/V40
S4
S3
GND
S6
S7
Sensors
Relais
S2
S1
N
R3
R2
R1
L
R4
PWM A
0-10 V
PWM B
0-10 V
R4
N N N N
R3 R2 R1 L
1234
56789
10 11
332
2 3 3
22
S3
Netz
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