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In the Rotherbaum district, in Hamburg, 63 owners and one commercial unit have found a new home: this residential complex not only has a contemporary and stylish architecture of the LRW Architekten and Stadtplaner based in Hamburg, but it also pays attention to detail solutions; since the DAB booster system keeps water pressure constant, the clients relied on the installation of a pressure booster (DEA) with 3 vertical centrifugal pumps type KVC AD 70/120 T and the integrated inverter Active Driver.
The 3 pumps complex has a water flow rate of 36 m³/h, with two pumps - each of 12 m³ - that are always in operation, while the third, always of 12 m³, is a spare pump and starts in case one of the others stops. This system, compact, flexible and reliable, was selected by Kunz and Petersen Sanitär in Hamburg and supplied by the specialist wholesaler D.F. LIEDELT in Norderstedt, and it provides constant water pressure with very low noise level.
The integrated Active Driver with inverter technology has complete control of the pumps. The combination of water connections, pressure sensor, flow sensor and frequency inverter regulates their speed, so that the pressure remains constant while the water need changes: no matter how many faucets within the building retrieve water at the same time, the DEA keeps it at the desired adjusted pressure. According to the specifications of the Hamburg Wasser on the construction, arrangement and installation of such products, this pumps complex complies with the DIN 4109 requirements.
Thanks to this installation, all 63 owners can shower at the same time - and this is not trivial at all.