Description
With hot water priority circuit, compact residential unit, hydraulic interface unit for hot water production by 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 preinstallation bracket.
Option to connect the pre-installation bracket from the floor.
Consisting of:
- Copper-soldered asymmetrical stainless steel plate heat exchanger
- HERZ pressure and temperature controller for central regulation of the hot water temperature with hot water priority circuit
- Control valve with return temperature limiter for low heating return temperature
- 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
- 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 41 or 55°C – 65°C – 1 4024 81
Max. operating temperature 75°C
Max. operating pressure on primary circuit and drinking water 10 bar
Max. operating pressure secondary circuit heating 3 bar
Max. heating power 10 kW
Min. stat. cold water 3 bar
Tapping rate 18 L/min (10/50°C)
Heat exchanger power 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 47
- HERZ surface mount cover 1 4024 09
- HERZ sensor mount for temperature sensor (M 10 × 1) for the heat meter 1 4111 60
Product List
| Code | Description | Sale Unit |
|---|---|---|
| 1 4024 41 | HIU Compact RAD, 18 L | 1 |
| 1 4024 81 | HIU Compact RAD WP, 18 L | 1 |
