“Solar” function
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3.5
Setting the "Tube collector" function
If the solar power system is equipped with tube collectors, you have to activate this
function.
The control type is selected in the following menu item:
•
Basic settings/Solar circuit/Tube collector/Function
−
Time-controlled
−
Radiation-controlled
−
Control via temperature change
Time-controlled
You can set a time window and a pump runtime. In the time window the solar circuit
pump is switched on at certain specific intervals for the duration of the preset pump
runtime.
For this function you can set the following parameters:
•
Basic settings/Solar circuit/Tube collector/Pump runtime
•
Program/Solar circuit/Tube start time (stop)
Radiation-controlled
When the level of radiation reaches the preset radiation value, the solar circuit pump is
switched on for the duration of the preset pump runtime.
For this function you can set the following parameters:
•
Basic settings/Solar circuit/Tube collector/Pump runtime
•
Program/Solar circuit/Radiation
Control via temperature change
Whenever the collector temperature rises by a predefined value within a predefined
interval period, the solar circuit pump will be switched on.
For this function you can set the following parameters:
•
Basic settings/Solar circuit/Tube collector/Time
•
Basic settings/Solar circuit/Tube collector/delta T
3.6
Bypass function / external heat exchanger
When the criteria for switching on are met, the solar circuit pump is activated first in order
to warm up the collector circuit. This optimizes the energy generation process, especially
in larger solar power systems.
The storage tank is not charged until the temperature in the solar circuit is sufficient to do
so. The parameters for switching on and off are permanently set in the controller.
