Arrangement 24: Solar system with east-/west collectors, store loading in layers and heat exchange
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 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. Heat exchange control to an existent store via an additional
pump (R4) can be carried out with another temperature differential function (S3
heat source / S4 heat sink).
Sensors
S1 Temperature collector 1 1 / GND
S2 Temperature store base 2 / GND
S3 Temperature store
top / Heat exchange
source
3 / GND
S4 Temperature heat
exchange sink
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 Heat exchange pump R4 /R4
R4
R3
R2R1
S5
S4
S2
S1
Te mp. Sensor
Pt1000
L
R3
R2
R1
GND
S1
S2
S3
S4
S5
VBus
PWM 1
PWM 2
N
R4
V40
L'
VBus
GND
VFS
RPS
S3
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