Resol DeltaSol SL, Manual, Page: 34 / 84

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System 26: 2-store solar system with pump logic
The controller compares the temperature at sensor S1 to the temperatures at
sensors S2 and S4. If the measured temperature differences are higher than the
adjusted switch-on temperature differences, the pump (R1 and / or R2) will be
activated and the corresponding store will be loaded up to the adjusted store
maximum or set temperature respectively at most. The priority logic effects prior
loading of store 1.
With another temperature differential function (S3 heat source/S5 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
return preheating 3 / GND
S4 Temperature store
2 base 4 / GND
S5 Temperature
heating return 5 / GND
S6 Free S6
Relay
R1 Solar pump store 1 R1 / N / PE
R2 Solar pump store 2 R2 / N / PE
R3 Valve return preheating R3 / N / PE
R4 Free R4 /R4
R1 R2
R3
S1
S3
S2
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
2 2
3 3 2 2 2 3 3
S4
S5
Netz
Mains
Flow direction when
normally open