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Solar System Installation Guide
The solar circuit pump R1 is switched on as soon as the switch-on temperature difference between the collector array A1
(T1) and the storage tank B1 (T2) is reached. When the switch-off temperature difference between the collector array A1
(T1) and the storage tank B1 (T2) or a safety limit is reached, the solar circuit pump R1 is switched off again.
Be sure to run all wires for the collector sensor indoors and protect them from damage.
For more information on wiring, please consult the SC200 U or SC300U controller installation manual.
Programming
The SC 200 U & SC 300 U controllers are pre-programmed with the following parameters.
Maximum temperature storage tank 1:
140°F
Switch on temperature difference solar 1 and solar 2:
16°F
Switch off temperature difference solar 1 and solar 2:
8°F
These and other parameters can be easily changed. The appropriate system and functions can be selected following
reference from the controller installation manual. The figure below gives an overview of the operating switches and
buttons.
Please refer to the controller’s installation manual for details on system selection and function programming.
