Pump Control Unit DC-Control
Advanced control functions for solar station TACOSOL EU21.
To prevent cooling of the storage unit in a solar thermal system at supply temperatures that are too low, the hydraulic circuit must be interrupted under unfavorable conditions (for example, early in the morning, heavy cloud cover or low storage volumes). The system must also be protected against overheating.
The DC-Control provides all control functions required to automatically switch the self-sufficient solar station on or off. Power to the DC-Control can be provided by the PV panel.
The DC-Control regulates the following aspects in accordance with exposure to the sun or the heat evolution in the collector:
• Activation of the pump if there is adequate exposure to sunlight
• Deactivation of the pump if the supply temperature is too low
The maximum storage tank temperature and the desired difference in tem-perature are each adjusted by a potentiometer.
Advantages
- Monitoring of temperature differences in the collector and storage tank
- Monitoring of the maximum temperature in storage tank
- Adjustable maximum storage tank temperature and temperature difference (collector/storage tank
- Power can be provided through the PV panel
- Compact dimensions
- Easy to install
- Low-cost addition to the solar station TACOSOL EU21
- Uncomplicated integration into the insulation box of the solar station
- Deactivation of the pump upon exceeding the maximum collector and storage tank temperature
- Activation and deactivation of the pump according to the configured temperature difference
- Activation of the control unit before power-up of the d.c. pump
- Includes two temperature sensors
