NXHM NEWSLETTER

TECHNICAL MANUAL NHIM

NXHM CERTIFICATION

PRODUCT SHEET NXHM 016

The model NXHM by Riello is a high-energy-efficient heat pump for heating, cooling and possible production of domestic hot water.

The unit operates with ecological refrigerant R32 ensuring not only low Global Warming Potential (GWP) and CO2 emissions, but also strong performance with high energy efficiency at all times. The NXHM is also equipped with Blue-Fin heat exchange elements, with a special hydrophilic and anti-corrosion treatment, which improves the flow of condensation on the fins, thus reducing the risk of freezing in the element (maximum performance even in humid climates).
The operating range of the unit during the winter can reach external ambient temperature -25 ˚C. In summer it can operate with a maximum ambient temperature of +52 ˚C.

The NXHM heat pump is the ideal solution for all domestic and small commercial applications for underfloor heating, heating with fan coil units, radiators and even cooling applications. The monoblock construction facilitates the installation process making it easier and more professional. The NXHM is equipped with a wired controller which is provided as standard equipment. The NXHM is available in 10 different models with heating power from 4.2 to 15.9 kW.

• DC Inverter Technology with a dual rotary compressor that adjusts the power required to perfectly match the actual required load.
• High COP and EER (all NXHM heat pumps comply with the highest standards in terms of energy efficiency).
• Certified performance HP Keymark.
• They can be connected to low temperature radiators, underfloor heating and fan coil
• Water heating temperature up to +65 °C.
• Easy and quick installation.
• Silent operation.
• Wired controller included which can fully manage the heating/cooling/hot water system.
• The controller can manage up to 6 units in a cluster system (1 master & 5 slaves) even with different power input.

The anti-freeze program protects the entire system, especially the hydraulic parts, from damage at very low ambient temperatures.

The performance values refer to the European directive UNI EN EN 14511-3:2013. The performances correspond to the following conditions:
(1) Heating: supply temperature 35 °C (Δt5˚K); Outdoor temperature 7 °C/6 °C.
(2) Heating: supply temperature 45 °C (Δt5˚K); Outdoor temperature 7 °C/6 °C.
(3) Cooling: supply temperature 18 °C (Δt5˚C); ambient temperature 35 °C.
(4) Cooling: supply temperature 7 °C (Δt5˚C); ambient temperature 35 °C.
(5) The annual efficiency class is stated with an average climate zone and a supply temperature of 55 °C.