Steca Suntana 2

6 inputs, 2 outputs

Suntana 2 3D.jpg
Suntana 2 3D.jpg


The microprocessor-controlled Steca Suntana 2 controller is used for monitoring and controlling of solar thermal systems with two differently oriented collector arrays and a maximum of two domestic hot water or buffer storage tanks.

The system parameters and measured values can be viewed and modified via a 2 x 16-digit LCD display. The amount of solar energy fed from the collector array into the storage tank can be read from the LCD display at any time, thanks to a flow meter with pulse output. The integrated hours-of-operation logger is used to automatically monitor both controller outputs and provides extra operational safety for your solar energy system. The controller has a maximum of five inputs for temperature measurement, a digital pulse input for recording heat quantity, and two outputs for controlling pumps or a switching valve.


Product features

  • Electronic speed control
  • Maximum storage tank temperature
  • Adjustable switch-on temperature difference
  • Adjustable switch-off temperature difference
  • High level of operational safety through fault diagnosis
  • Logging of minimum and maximum temperature values
  • Hours-of-operation logger
  • Spring clamp terminals allow rapid and easy installation


  • Text LC display
  • Temperature display for storage tank and collector


  • Single-language menu navigation, different languages available


  • Heat quantity (pulse generator)
  • Reduction of stagnation phases
  • Display storage tank top


Product data sheet

  •  Steca Suntana 2 productdatasheet DE · pdf · 0,472 MB
  •  Steca Suntana 2 productdatasheet EN · pdf · 0.477 MB
  •  Steca Suntana 2 productdatasheet FR · pdf · 0,919 MB
  •  Steca Suntana 2 productdatasheet IT · pdf · 0,919 MB


  •  Steca Suntana 2 manual DE · pdf · 2.469 MB
  •  Steca Suntana 2 manual EN · pdf · 1.925 MB
  •  Steca Suntana 2 manual FR · pdf · 0.938 MB
  •  Steca Suntana 2 manual ES · pdf · 1.947 MB
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