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System 14: Solar system with store loading in layers and return preheating
The controller compares the temperature at sensor S1 to the temperatures at
sensors S2 and S3. If the measured temperature differences are higher than the
adjusted switch-on temperature differences, the pump (R1) will be activated and
the corresponding store zone will be loaded up to the adjusted store maximum
or set temperature respectively via the valve (R2). The priority logic effects prior
loading of the upper zone of the store.
With another temperature differential function (S5 heat source/S4 heat sink) re-
turn preheating (heating circuit backup) is possible via another valve (R3).
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
Temperature heating
return
4 / GND
S5
Temperature store
return preheating
5 / GND
S6
Free
S6
Relay
R1
Solar pump
R1 / N / PE
R2
Valve solar circuit
R2 / N / PE
R3
Valve return preheating R3 / N / PE
R4
Free
R4 / R4
R2
R3
R1
S4
S5
S2
S1
VBus
VBus
S5/V
40
S4
S3
GND
S6
S7
Sensors
Relais
S2
S1
N
R3
R2
R1
L
R4
PW
M
A
0-10
V
PW
M
B
0-10
V
R4
N
N
N
N
R3
R2
R1
L
1
2
3
4
5
6
7
8
9
10
11
S3
2
2
3
3
2
2
3
3
2
Netz
Mains
Flow direction
when normally open
Flow direction
when normally open
Содержание DeltaSol SL
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