Device for automatic hot water circulation in buildings with hot water tank supplied by main hot water line has arrangement of circulation pump, connecting lines, valves and flow sensor

摘要

The device has a first connecting line (3) with a circulation pump (6) between the start of the main cold line (1) and the hot tank (12), a second connecting line (4) between the hot tank end of the main hot line and the end of the main cold line, a first valve (7) in the main cold line before the junction with the first connecting line, second and third valves (8,9) in the first and second connecting lines and a main hot line flow sensor (5).