Solar Controller SDC 307 incl. 1 collector and 2 storage sensors

SDC 307 controllers are high-performance microprocessor-controlled units for controlling the functions of solar thermal systems. The SDC 307 perfectly controls solar power systems equipped with up to two collector arrays or two storage tanks and can be used for numerous system types.

The controller is equipped with the following features:
- Intuitive operating menu with graphic symbols and four operating buttons  
- Illuminated display  
- Adjustable control values  
- Solar circuit pump RPM control or switching control  
- Start function for systems equipped with tube collectors  
- Integrated operating hours counter for storage tank charging  
- Extensive functions for system monitoring that display symbols to indicate errors and faults
- Integrated energy yield measurement   
(optional, only in conjunction with the yield measurement set)
- Storage of all values even during a prolonged mains power supply outage  
- Various protective functions, such as system protection, collector protection, recooling and anti-freeze protection
- Individually operated independent controller that can be programmed with three time frames
- Generous wiring space  
- Real-time clock function

Multi-funktional regulator
This function is reserved for output 3 and can be allocated the following functions:
- Cooling  
- Heating   
- Difference controller  
The temperature sensor for the temperature source can be selected as required.

Diagrams:

1 Kollektorfeld, 1 Speicher und Variantenbeispiele mit dem freien Regler

1 Kollektorfeld, 2 Speicher, Pumpe - Ventil

1 Kollektorfeld, 2 Speicher, 2 Pumpen

2 Kollektorfelder, 1 Speicher, Pumpe - Ventil

2 Kollektorfelder, 1 Speicher, 2 Pumpen

What is in the box:

Controller
Manuals German and English, French ans Spanisch as PDF

The device is made in Germany.

Specifications: