Description

The Steca TR A502 TT U controller is the ideal solution for all 2-circuit systems. It monitors and controls solar thermal systems with up to two differently oriented collector arrays or a maximum of two domestic hot water or buffer storage tanks.

The Steca TR A502 TT U is also characterised by the compact housing typical of this series and can therefore be perfectly integrated into solar stations. Wall or top-hat rail mounting is also possible at any time. Thanks to the variable input voltage range, universal and worldwide use is assured.

The solar thermal controller has five inputs for temperature and pulse detection as well as two outputs. These can be optionally used to control (0-10 V) high-efficiency pumps. The equipment also includes an additional alarm output. A graphically animated, clear display visualises the operating states.

The integrated heat meter enables the solar yields to be recorded with imputed values or with the aid of an external pulse generator.

The versatile controller has eleven pre-programmed systems and is extremely easy to configure and operate.

The specially designed switched-mode power supply, the basis for all products in this controller series, also guarantees the highest possible efficiency and economical operation with the Steca TR A502 TT U. This is particularly characterised by the extremely low controller self-consumption level. The innovative electronic load control protects against overloading and installation errors.

In order to ensure the continuous and safe operation of the entire solar system, the Steca TR A502 TT U takes on important system monitoring and safety functions in addition to the controller operation. Special error messages are displayed for quickly rectifying faults.