HIU Salzburg NT with radiator outlet

Description

Compact residential unit, hydraulic interface unit for hot water production by the continuous flow principle and heat transfer to low-temperature heating and radiator outlet. 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
• HERZ pressure and temperature controller for central regulation of the hot water temperature with integrated hot water priority circuit
• 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; 230 V, normally closed
• Constant readiness for hot water production even in summer operating mode due to temperature-regulated bypass switching, permanently set to 45°C
• Fixed value control with setting range 20°C – 50°C consisting of zone valve, thermostat with a contact sensor, safety thermostat and circulating pump
• Water flow meter adapter, total 80 mm – G 3/4 of dezincification-resistant brass, also suitable for sustained operation
• Cold water meter adapter 80 mm – G 3/4 of dezincification-resistant brass, also suitable for sustained operation
• Hot water flow 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 return line of low-temperature circuit
• Strainer with fine mesh in cold water inlet

Max. operating pressure 10 bar,
Max. heating power 10 kW
Min. stat. cold water pressure 2.8 bar,

Tapping rat 15 L/min (10/45°C) – 1 4024 11 or 18 L/min (10/45°C) – 1 4024 16,
Heat exchanger power 37 kW – 1 4024 11 or 42 kW – 1 4024 16,

Max. differential pressure 2 bar

1 4024 10 – as 1 4024 11 but pipes insulated
1 4024 15 – as 1 4024 16 but pipes insulated

Accessories to be ordered separately:

• HERZ pre-installation bracket 1 4024 03
• HERZ flush box with pre-installation bracket 1 4024 04
• HERZ surface mount cover 1 4024 08
• HERZ differential pressure controller set, setting range 25–60 kPa 1 4024 19
• HERZ sensor mount for temperature sensor (M 10 × 1) for the heat meter 1 4022 46
• Flush box with front door and front frame white powder-coated (RAL 9003);
• pre-installation bar, rod-type distributor with flow meter and upper thermostatic insert

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