compact residentiAluminium unit, hydraulic interface unit for hot water production by continuous flow principle and transfer of heat to low-temperature heating. Installation as flush mounted version with flush box or as surface-mounted version with cover. The pipe connection to the residentiAluminium 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 asymmetricAluminium stainless steel plate heat exchanger
    • Second heat exchanger for system separation on the secondary heating circuit
    • HERZ pressure and temperature controller for centrAluminium regulation of the hot water temperature
    • Fixed value control with setting range 20°C – 50°C consisting of zone valve, thermostat with contact sensor, safety thermostat and circulating pump
    • Constant readiness for hot water production even in summer, operating mode due to temperature-regulated bypass switching, permanently set to 45°C
    • Cold water meter adapter 80 mm – G 3/4 made of dezincificationresistant brass, also suitable for continuous operation
    • Heat meter adapter 110 mm – G 3/4 made of dezincificationresistant brass, also suitable for continuous operation
    • Diaphragm expansion tank secondary
    • Diaphragm safety valve 3 bar secondary
    • Strainer with fine mesh in primary supply line
    • Strainer with fine mesh in secondary return line
    • DifferentiAluminium pressure controller with integrated control valve, shut off valve and zone valve in the secondary circuit
    • DifferentiAluminium pressure controller (25 - 60 kPa) in the primary circuit

Flow temperature on primary circuit 65°C - 75°C - 1 4024 43/1 4024 55/1 4024 56 or 55°C - 65°C - 1 4024 83
Max. operating temperature 75°C
Max. operating pressure on primary circuit 10 bar
Max. operating pressure secondary circuit 3 bar
Max. heating power 10 kW
Min. stat. cold water pressure 3 bar
Tapping rate 18 l/min (10/50°C) - 1 4024 43, 15 l/min (10/50°C) - 1 4024 55 or 22 l/min (10/50°C) - 1 4024 56
Heat exchanger output 42 kW
Max. differentiAluminium pressure 2 bar

Accessories to be ordered separately:

- HERZ- pre-installation bracket 1 4024 49
- Flush-box with front door and front frame white, powder-coated (RAluminium 9003), front door with latch 1 4024 48
- HERZ actuating drive for 2-point control 1 7708 53
- HERZ flush box 1 4024 51
- HERZ surface mount cover 1 4024 57
- HERZ sensor mount for temperature sensor (M 10 x 1) for the heat meter 1 4111 60