Compact substation for drinking water systems and radiator heating utilising a countercurrent heat exchanger made of Cu/Ni brazed stainless steel. Central controller for hot water only operates as a pressure drop is detected when a hot tap is opened. Assembly is available in surfacemounting or fl ushmounted versions. Pipe connection to an HIU is realised by means of a patented mounting system with pre-mounting unit. This unique installation system saves the installer the often complicated and time-consuming calibration and adjustment measures required on existing (pre-) installations. Ball valves can be connected optionally to the fl oor.

• Max. operating temperature 90°C
• Max. operating pressure 10 bar
• Min. static cold water pressure 2.8 bar
• Tap output 15 l/min (10/50°C)
• Heat exchanger output 45 kW

The following accessories to be ordered separately:

• HERZ pre-mounting unit 1 4008 04
• HERZ fl ush-mounted body 1 4008 06
• HERZ cover 1 4008 08