TDS W16 M: ELIOS 25 VARIO PLUS
Digital differential thermostat for solar heating plants: it compares temperatures of fluids in the collectors and the storage tanks and, when the difference is greater than DeltaT, starts the heat exchange through the pump. Additional thermostats for driving auxiliary heat sources. All temperatures are displayed. Configuration of 20 different system layouts. Offset correction for the measured temperatures. Self diagnostics. 4 inputs for Pt1000 sensors, 4 outputs whereof 2 solid state relays.