en-US/C
A
31
The controller compares the temperatures at the col-
lector sensors S1 and S3 to the tank temperatures
at the sensors S2, S4 and S5. If one of the measured
temperature differences is higher than the adjusted
switch-on temperature differences, the corresponding
pump (R1, R2) will be activated and the correspond-
ing tank will be loaded up to the adjusted maximum
temperature via the valves R3, R4. In this system, one
of the tanks can be loaded with priority.
System 9
3-tank solar system with east-/west collectors
Sensor/
terminal
Designation
Description
S1
TCOL
Temperature collector 1
S2
TST1B
Temperature tank 1 bottom
S3
TCOL2
Temperature collector 2
S4
TST2B
Temperature tank 2 bottom
S5
TST3B
Temperature tank 3 bottom
V40
optional: fl owmeter
Relay
Description
R1
Solar pump tank 1
R2
Solar pump tank 2
R3
Valve tank 1/2, 3
R4
Valve tank 2/3
Ventillogik
1
2
3
4
Durchflussrichtung
im stromlosen Zustand
Ventillogik
1
2
3
4
Durchflussrichtung
im stromlosen Zustand
Ventillogik
1
2
3
4
Durchflussrichtung
im stromlosen Zustand
Valve logic
Flow direction when the
valve is normally open
Содержание SCU345
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