- EWYE-CZ series uses low-Global Warming Potential HFO refrigerant
- Provides hot water at temperatures up to 70°C
- There is a low-noise option, making it a good choice for residential buildings
Daikin has revealed its new air source heat pump range for residential applications. According to the Japanese manufacturer, the EWYE-CZ – which it describes as an air-to-water heat pump, is well suited to hospitals, hotels and residential buildings.
The series has a temperature coefficient of up to 3.4 and a size ranging from 16 kW to 70 kW.
Daikin says: “The EWYE-CZ offers heating in various applications and allows the production of domestic hot water.
“The range is available in eight sizes from 16 kW to 70 kW, all equipped with Daikin Inverter Scroll Compressor technology.
The operating range provides hot water temperatures from 20°C to 70°C, classifying the EWYE-CZ series as a high temperature heat pump.
Daikin says the range also functions effectively under diverse environmental conditions, in ambient temperatures ranging from -25°C to 40°C. Temperatures of -25°C are considerably colder than you would expect in the UK winter, debunking one of the key myths about heat pumps ‘not being suitable for the UK climate’.
The refrigerant used in the EWYE-CZ heat pump series also has a low Global Warming Potential (GWP). Hydrofluoro-olefin (HFO)-based R-454C has a GWP of 145.5 – well below the 2,500 GWP restrictions for refrigerants, which have been in place since 1 January 2020.
Daikin have also used their own inverter scroll compressors and inverter-driven fans. It said: “The fully inverter design ensures greater adaptability to the cooling and heating loads of the building, minimizing the number of on-off cycles and extending the unit’s lifetime.”
The heat pumps also feature the company’s own remote monitoring technology.
“EWYE-CZ can contribute to projects’ credits when evaluating the energy efficiency of the hydronic system, thanks to inverter-driven compressors,” Daikin said.
“It can function with a significant temperature difference between the water entering and leaving the system, ensuring that hot water can be supplied to different heating applications within the system.”
The smallest system is 1,878 mm x 1,152 mm x 802 mm and has a cooling capacity of 16.8 kW. Its heating capacity and coefficient of performance (COP) at temperatures ranging from 7°C to 45°C are 19.0 kW and 3.4, respectively.
The largest system measures 1,878 mm x 3,506 mm x 814 mm and has a cooling capacity of 63.5 kW. Its heating capacity and COP at temperatures ranging from 7°C to 45°C are 70.0 kW and 3.17, respectively.
A low-noise version is also available, making it well-suited for domestic applications.
