The range is Eurovent certified and achieves a Class A energy-efficiency rating. Extra-low-noise versions are available.

These units are suitable for a variety of applications, including open- and closed-loop ground-source water, centralised heating and cooling systems, fan-coil units, air-handling units, low-temperature heating and underfloor heating.

All units use R134 with a double screw compressor with stepless capacity control down to 10%. Larger units above 420 kW have twin refrigerant circuits. The loading of compressors takes account of the rate at which the water temperature is reduced, avoiding over-cooling.

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