Unit description Outdoor reversible unit for the production of chilled/hot water with hermetic rotary Scroll compressors, ozone-friendly refrigerant R410A, axial-flow fans, copper tubes aluminum fins air coils, shell and tubes heat exchanger, and thermostatic or electronic expansion valve, according to the model. External panels in pre-clad sheet steel and base in galvanised steel with paint finish. The range is composed by units equipped with four compressors in tandem configuration on two independent refrigerant circuits. Version K - Standard efficiency, compact version LN-K - Key efficiency, compact and low-noise version SL-K - Key efficiency, compact and super low-noise version CA - Class A of efficiency LN-CA - Low Noise, Class A of efficiency SL-CA - Super Low noise version, Class A of efficiency Configurations - - basic function D - partial condensing heat recovery function Features REFRIGERANT GAS R410A The use of R410A allowed to achive better energy efficiencies with environment full respect (ODP = 0) ELECTRONIC EXPANSION VALVE SUPPLIED STANDARD The use of the electronic expansion valve generates considerable benefits, especially in cases of variable demand and different external conditions. It has been introduced into these units as a result of accurate design choices concerning the cooling circuit and the optimisation of operation in various different working conditions. The electronic expansion valve comes standard in the high-efficieny CA version, optional for the compact K versios.