When the temperature of the panels is higher than that of the water in the boiler, the control unit starts the pump that allows the exchange of heat between the panel and the boiler. To ensure perfect temperature exchange, the appliance is equipped with a ´Delta T´ temperature differential variable from 3 ° to 15 ° C which can be adjusted with the buttons on the front of the control unit. It allows the integration of both sanitary water and the traditional heating system. Configuration of the four different solar systems: 1st boiler panel system. 2nd boiler panel system + storage boiler with automatic temperature control. 3rd Heating system integration system with automatic control. 4th Integration system to the swimming pool system with automatic control. Domestic hot water priority. Power supply 230V - Temperature reading range: -20 ° C - 120 ° C. Fixing: on electrical panel on DIN omega bar - 9 modules.