Lamborghini Caloreclima Alhena RRT Tech 28C – HR combi boiler (3.4 – 24.0 kW CW4)
Price excl. VAT€ 776,82Price incl. VAT€ 939,95
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Lamborghini Alhena RRT Tech 28C HR combi boiler. Compact, quiet and energy-efficient with CW4 hot water performance. Suitable for modern heating systems.
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Other variants
- HR combi boiler 3.4 – 24 kW
- CW4 hot water performance
- Quiet, compact and energy-efficient
- Modulating gas burner and electronic control
- Low NOx emissions (Class 6)
- Easy to install and maintain
- Suitable for new build and retrofit
Compact high-efficiency HR combi boiler
The Lamborghini Caloreclima Alhena RRT Tech 28C is a modern high-efficiency condensing combi boiler with a capacity range of 3.4 to 24.0 kW. It provides reliable heating and domestic hot water performance, with quiet operation and low energy consumption. The CW4 rating ensures strong hot water output suitable for multiple taps.
Technical features
The boiler is equipped with a modulating gas burner and a high-efficiency heat exchanger. The intelligent electronic control system continuously adjusts output to the heating demand, ensuring optimal performance and reduced energy use. Low NOx emissions (Class 6) make this boiler an environmentally friendly option.
CW4 hot water comfort
The integrated plate heat exchanger ensures fast and stable hot water delivery. CW4 performance guarantees high flow rates and consistent temperatures, ideal for family homes.
Installation and system compatibility
Its compact dimensions and low weight make the Alhena RRT Tech 28C easy to install in both new-build and retrofit applications. The boiler is compatible with radiator systems, underfloor heating and mixed installations. It also supports weather-compensated control and smart thermostats.
Maintenance and reliability
All components are easily accessible for quick maintenance. The boiler features an integrated condensate drain and HR-compatible flue (Ø60/100 mm), ensuring long-term reliable operation.
Conclusion and recommendation
The Lamborghini Caloreclima Alhena RRT Tech 28C HR is an efficient, quiet and high-performance combi boiler that delivers excellent CW4 hot water comfort. A reliable choice for modern heating systems.
Support from Hewa
Hewa supplies the Alhena RRT Tech 28C as part of a comprehensive range of HR boilers and heating components. Installers benefit from documentation, product support and fast delivery.
| Generals | |
|---|---|
| Item number | 229428 |
| EAN Code | 8721225900662 |
| Price excl. VAT | € 776,82 |
| Price incl. VAT | € 939,95 |
| Sizes ((LxWxH):) | 32 x 42 x 70 cm |
| Technical data | |
| Heating max/min heat input (kW) | 24.5 / 3.5 kW |
| Heating max/min heat output (80/60°C) (kW) | 24 / 3.4 kW |
| Heating max/min heat output (50/30°C) (kW) | 26 / 3.8 kW |
| SWW max heat input (kW) | 28.5 kW |
| SWW minus heat input (kW) | 3.5 kW |
| SWW max/min heat output (kW) | 28 / 3.4 kW |
| Efficiency Pmax (80-60°C) (%) | 98.1 % |
| Efficiency Pmin (80-60°C) (%) | 98 % |
| Efficiency Pmax (50-30°C) (%) | 106.1 % |
| Efficiency Pmin (50-30°C) (%) | 107.5 % |
| Return at 30% (%) | 109.7 % |
| G20 gas supply pressure (mbar) | 20 mbar |
| G20 max. gas flow rate (m³/h) | 3.02 m3/h |
| G20 min. gas flow rate (m³/h) | 0.37 m3/h |
| CO2 max/min G20 (%) | 9.3 / 9.2 % |
| G31 supply gas pressure (mbar) | 37 mbar |
| G31 gas supply pressure (kg/h) | 2.21 / 0.27 kg/h |
| CO2 max/min G31 (%) | 10.3 / 9.8 % |
| NOx emission class (EN 15502-1) | 6 |
| Max working pressure heating (bar) | 3 bar |
| Min. working pressure heating (bar) | 0.8 bar |
| Maximum heating temperature (°C) | 95 °C |
| Water capacity heating (L) | 2.9 L |
| Heating expansion tank capacity (L) | 8 L |
| Pre-charge pressure expansion tank heating (bar) | 0.8 bar |
| SWW max. working pressure (bar) | 9 bar |
| SWW min. working pressure (bar) | 0.3 bar |
| SWW flow rate at 25°C (l/min) | 16.1 l/min |
| SWW flow rate at 30°C (l/min) | 13.4 l/min |
| Degree of protection (IEC 60529) | X4D |
| Supply voltage (V/Hz) | 230V / 50Hz |
| Electrical power consumption for heating (W) | 70 W |
| Electrical power consumption SWW (W) | 82 W |