Outdoor unit for the production of chilled water, equipped with oil-free centrifugal compressors, R1234ze refrigerant, axial 910 mm diameter EC fans, condensing coil with microchannel in full aluminum, shell and tube flooded evaporator and electronic expansion valve.

Base, supporting structure and panels are made of galvanized epoxy powder coated steel. The unit is supplied with refrigerant and has been factory tested. In free cooling mode, the liquid is cooled by outdoor air, thus lowering the load of the compressors until it is reduced to zero. The NG configuration complies with applications where the use of ethylene glycol it is not allowed or not desired.