HIU DELUXE

Compact residential unit, hydraulic interface unit for hot water production by the continuous flow principle and transfer of heat to radiator heaters. Installation as a flush-mounted version with a flush box or a surface-mounted version with a cover. The pipe connection to the residential unit hydraulic interface unit is created using a patented installation system with a pre-installation bracket.

Option to connect the pre-installation bracket from the floor.

Consisting of:

• Copper-soldered asymmetrical stainless steel counter-current heat exchanger
• Patented and WRAS-certified pressure and temperature controller for central regulation of the hot water temperature
• Scalding protection with built-in HERZ drinking water mixing valve
• Differential pressure controller on the heating side, permanently set to 23 kPa with integrated zone valve, threaded connection for drives M 28 × 1.5 mm; stroke 4 mm
• Actuating drive for installation on differential pressure controller; 230V, normally closed
• 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 of dezincification-resistant brass, also suitable for sustained operation
• Heat meter adapter 110 mm – G 3/4 of dezincification-resistant brass, also suitable for sustained operation
• Strainer with fine mesh in primary supply line
• Strainer with fine mesh in secondary return line

Max. operating temperature 90°C,

Max. operating pressure 10 bar,

Max. heating power 10 kW

Min. stat. cold water pressure 2.8 bar,

Tapping rate 15 L/min (10/50­°C) – 1 4008 22 or 18 L/min (10/50°C) – 1 4022 17,

Heat exchanger output 42 kW – 1 4008 22 or 51 kW – 1 4022 17,

Max. differential pressure 2 bar

1 4008 90 – as 1 4008 22, but with insulated pipes

Accessories to be ordered separately:

• HERZ pre-installation bracket 1 4008 04
• HERZ flush box 1 4008 06
• HERZ surface mount cover 1 4008 08
• HERZ measurement, control and draining set for hydraulic interface unit 1 4008 98
• HERZ sensor mount for temperature sensor (M 10 × 1) for the heat meter 1 4111 60

Product List