Unit description Outdoor unit for the production of chilled water featuring oil-free centrifugal compressor, with R134a, axial-flow fans, condensing coil with copper tubes and aluminium fins, shell and tube flooded evaporator and electronic regulation valve. Base and supporting structure and panels are of galvanized epoxy powder coated steel with increased thickness. Flexible and reliable unit; it easily adapts itself to different thermal load conditions thanks to the precise thermoregulation together with the use of inverter technology. The compressor is radically innovative: magnetic bearings and digital rotor speed control allow partial load efficiency levels to be reached that were hither to impossible. Version SL-CA - Super Low noise version, Class A of efficiency XL-CA - eXtra Low noise version, Class A of efficiency SL-CA-E - Super Low noise version, Premium efficiency, Class A enhanced Configurations - - basic function D - partial condensing heat recovery function Features VERY HIGH EFFICIENCY Very high efficiency at full and partial load, to top market levels, thanks to adopted technological solutions: large capacity modulation and expanded exchanger, offering minimum running costs of the unit in real working conditions.