Solar regulation and differential thermostat

“SOLAR” CONTROLLER CHARACTERISTICS OF THE Solar CONTROLLER: Domestic hot water temperature regulation. Collector circuit temperature regulation (max. 2 separated collector circuits). Boiler circuit regulation (max. 2 circuits: oil/gas/solid fuel (biomass) firing boiler circuit and solid fuel (biomass) firing boiler circuit)). Regulation of the additional accumulating hot water heater (i.e. TB hot water heater or CAS-S,  [ » ]