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HIU Preßburg with summer bypass

Description

Compact residential unit, hydraulic interface unit for hot water production by the continuous flow principle and heat transfer to radiator heaters. Installation as a flush-mounted version with a flush box or as 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 13 kPa
  • Valve on the heating side for regulation of the water flow
  • 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
  • Cold water meter adapter 110 mm – G 3/4 of dezincification resistant brass, also suitable for sustained operation
  • Hot water flow meter adapter 110 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 primary 10 bar
Max. heating power 10 kW
Min. stat. cold water pressure 2.8 bar
Tapping rate 18 L/min (10/50°C)
Heat exchanger power 51 kW
Max. differential pressure 2 bar

Accessories to be ordered separately:

  • HERZ pre-installation bracket 1 4020 97
  • HERZ shutoff ball valves in place of the pre-installation bracket 1 4020 99
  • 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 4022 46

Product List

Code Description Sales Unit
1 4020 33 HIU PRESSBURG with summer bypass, 18 L 1
Nordics™