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InstallationIndications, functions and optionsMessages Commissioning Operation and function
System 10: Solar system with 1 store and heat dump
The controller calculates the temperature difference between collector sensor
S1 and store sensor S2. If the difference is larger than or identical to the adjusted
switch-on temperature difference, the pump (R1) will be switched on and the store
will be loaded until the switch-off temperature difference or the maximum store
temperature is reached.
If the collector maximum temperature (CMAX) is reached, the solar pump will be
energised by R1 and the 3-port valve by R2 in order to divert excess heat to a heat
sink. For safety reasons, excess heat dump will only take place as long as the store
temperature is below the non-adjustable shutdown temperature of 95 °C [200 °F].
System 10 system screen
Temperature sensors
S1 Temperature collector 1 / GND
S2 Temperature store
base
2 / GND
S3 Free 3 / GND
S4 Free 4 / GND
Relay
R1 Solar pump R1 / N / PE
R2 Heat dump valve R2 / N / PE
R4 Free R4 / R4
N N N N
10 11
332
2
3
R2
R1
S2S2
S1
VBus
VBus
V40
S4
S3
GND
Sensors
Relais
S2
S1
N
R2
R1
L
R4
R4
R2 R1 L
1234
56789
PWM A
PWM B
Mains
Flow direction when
normally open
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