WATER-TO-WATER HEAT PUMPS – ARION ECO KZTB
arion ecoKZTBHigh-temperature water-to-water heat pumps optimized for high ΔT | producing hot water up to 87°C
584-2200 kW
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▸ Ecodesign Manual COMFORT
Heating-only water-to-water heat pumps with Inverter screw compressors, from 584 to 2200 kW, designed for high-temperature hot-water production up to 87 °C and optimized for large temperature lifts (ΔT).
ARION eco combines low-GWP R1234ze HFO refrigerant with a shell-and-tube evaporator, two shell-and-tube condensers in series and a plate heat-exchanger subcooler to deliver very high COP values.
- Reduced refrigerant charge using low-GWP R1234ze HFO refrigerant.
- High-temperature hot-water production up to 87 °C.
- New self-supporting shell-and-tube heat-exchanger configuration, enabling a more compact unit.
- Reduced hydraulic-circuit flow requirements, lowering pumping energy consumption and hydraulic installation costs.
- A dedicated thermodynamic arrangement increases heating capacity and efficiency, achieving very high COP values.
- Inverter-driven screw compressors with external variable-frequency drives provide continuous capacity modulation.
- Shell-and-tube heat exchangers with one evaporator and two condensers in series are optimized for large temperature lifts.
- A plate heat-exchanger subcooler is fitted as standard on each refrigerant circuit.
Efficient decarbonization
ARION eco is designed to electrify high-temperature thermal demand efficiently. By producing hot water up to 87 °C while maintaining high COP values, the range can reduce the electrical energy required per unit of useful heat compared with direct electric heating and can support the replacement or reduction of fossil-fuel heat generation.
Inverter modulation, high-efficiency heat exchangers and lower hydraulic flow requirements reduce both compressor demand and auxiliary pumping consumption. The use of R1234ze, with a GWP of 4 in the technical data, also lowers the climate impact associated with the refrigerant charge.
This combination is particularly suitable where high supply temperatures and large temperature lifts are required, allowing decarbonization strategies to be implemented without sacrificing temperature level, controllability or energy performance.
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