Unit description Indoor unit for the production of chilled water with hermetic rotary Scroll compressors, centrifugal fans, braze-welded plate-type exchanger and thermal expansion valve. External panels in pre-clad sheet steel (simil Pereluman) and base in galvanised steel with paint finish. The range includes the single-circuit two-compressor versions and the dual circuit four-compressor versions. Version B - Basic HT - high efficiency, high outdoor temperature version Configurations - - basic function D - partial condensing heat recovery function R - total condensing heat recovery function Features REFRIGERANT GAS R410A The use of R410A allowed to achive better energy efficiencies with environment full respect (ODP = 0) TOTAL VERSATILITY The NECS-CN units are available with both vertical and horizontal air outflow. The horizontal outflow version is particularly effective in installations where the height of the technical compartment does not allow the traditional vertical outflow HIGH PERFORMANCE CENTRIFUGAL FANS The units are fitted with statically and dynamically balanced double-inlet centrifugal fans coupled by belt and pulleys. Useful static pressure up to 180 Pa. CLASS A EFFICIENCY The full range is also available with the Class A efficiency rating (in high outdoor temperature version). INTEGRATED HYDRONIC MODULE The built-in hydronic module includes the main water circuit components; it is available in various configurations with one or two pumps with high or low head.