Differential digital solar controller 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. 4 Pt1000 temperature inputs, 4 on- off relay outputs SPST, 1 alarm auxiliary relay output SPDT. Additional thermostats for driving auxiliary heat sources. All temperatures are displayed.
Configuration of 20 different system layouts. Contextual parameters. Collector minimum temperature thermostat. Offset correction for the measured temperatures. Self diagnostic feature, with visual and acoustic alarms.
Available functions: recooling function, pump/valve kick, calorimeter.