DOMESTIC HOT WATER CONTROL WITH HEAT EXCHANGER (flow through technology) RICCIUS+SOHN has developed a new controller in the control system DDC-RegelUNIT 9X compact: The district heating controller RU 98.1F-110.U with a quick 0..10V output and with a very fast control mechanism in combination with the high speed sensor MUF-HS XS. This fast controller enables the customer to control a domestic hot water system, that works with a heat exchanger in a flow through technology. This brings you following advantages: - No expensive buffer tank - no heat loss, no unnecessary heating. - compact construction of system - less room needed. - No danger of Legionelles. How is R+S doing this? The new R+S Controller RU 98.1F-110.U has a fast 0-10V-Output to control the DHW control valve or the revolution controlles DHW pump.