Measuring the energy yield
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For this control type you can set the following parameters:
•
Program/Solar circuit/Radiation
4.8
Setting the "Anti-freeze" function
The "Anti-freeze protection" function can be activated only if the "Drain-back"
function has been deactivated.
This function protects the solar power system against the heat transfer fluid freezing. If
the temperature falls below the preset temperature, the solar circuit pump switches on.
If the preset temperature is exceeded, the solar circuit pump switches off. The system will
run again in normal operating mode.
For this function you can set the following parameters:
•
Basic settings/Solar circuit/Anti-freeze protection
•
Basic settings/Solar circuit/Anti-freeze protection/Sensor
•
Basic settings/Solar circuit/Anti-freeze protection /Start temperature
•
Basic settings/Solar circuit/Anti-freeze protection /Hysteresis
•
Basic settings/Solar circuit/Anti-freeze protection/Min. runtime
5
Measuring the energy yield
The controller can calculate and display the energy yield of the solar power system. You
can assign yield measurement 1 to the solar circuit or set it as an independent yield
measurement.
The controller can calculate and display the energy yield of the solar power system as the
yield measurement in the solar circuit. To do so, it requires the following values:
•
Flow rate
•
Temperature difference between the collector and collector return flow temperatures
•
Glycol type and glycol concentration in the heat transfer fluid
The energy output is displayed in the following menu item:
•
Info/Balance values/Output
For the energy yield measurement you can set the following parameters:
•
Basic settings/Yield measurement
You can choose from the following measurement methods:
•
DFG (flow sensor)
•
VFS (vortex flow sensor)
•
DFA (flow indicator) – only yield measurement 1 in the solar circuit.
