Description
Compact residential unit, hydraulic interface unit for hot water production by continuous flow principle and transfer of heat to low-temperature heating. 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 plate heat exchanger
- Second heat exchanger for system separation on the secondary heating circuit
- HERZ pressure and temperature controller for central regulation of the hot water temperature
- Fixed value control with setting range 20°C – 50°C consisting of zone valve, thermostat with a 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 dezincification resistant brass, also suitable for continuous operation
- Heat meter adapter 110 mm – G 3/4 made of dezincification resistant 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
- Differential pressure controller with integrated control valve, shut-off valve and zone valve in the secondary circuit
- Differential 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. differential 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 (RAL 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 × 1) for the heat meter 1 4111 60
Product List
| Code | Description | Sales Unit |
|---|---|---|
| 1 4024 43 | HIU Compact Indirect, 18 L | 1 |
| 1 4024 55 | HIU Compact Indirect, 15 L | 1 |
| 1 4024 56 | HIU Compact Indirect, 22 L | 1 |
| 1 4024 83 | HIU Compact Indirect WP, 18 L | 1 |
