compact residential unit, hydraulic interface unit for hot water production by continuous flow principle and of heat to radiator heaters via separate heat exchanger. The pipe connection to the residential unit hydraulic interface unit is created using a patented installation system with pre-installation bracket. Option to connect the pre-installation bracket from the floor.

Consisting of:

• Copper-soldered asymmetrical stainless steel plate heat exchanger
• HERZ pressure and temperature controller for central regulation of the hot water temperature with integrated hot water priority circuit
• Constant readiness for hot water production even in summer, operating mode due to temperature-regulated bypass switching, permanently set to 45°C
• Heat meter adapter 110 mm – G 3/4 made of dezincificationresistant brass, also suitable for continuous operation
• Second heat exchanger for system separation on the secondary heating circuit
• Pump and thermostatic control for the secondary circuit
• Air vent in primary circuit
• Strainer with fine mesh in primary supply line
• Strainer with fine mesh in secondary return line
• Actuating drive for installation on differential pressure controller; 230 V, 50 Hz, normally closed

Max. operating temperature 90°C

Max. operating pressure on primary circuit

and drinking water 10 bar

Max. heating power 10 kW

Min. stat. cold water pressure 3 bar

Tapping rate 8 l/min (10/60°C)

Heat exchanger output 27 kW

Max. differential pressure 2 bar

Accessories to be ordered separately:

- HERZ- pre-installation bracket 1 4024 74

- HERZ actuating drive for 2-point control 1 7708 53