The NIRON PPR system was used for the new air conditioning system of the Hotel Piscis in Palma de Mallorca. NUPI Industrie Italiane manufactures prefabricated pieces specifically for this type of large installations. Behind the machine rooms that are built in modules there is an important design work based on the digital BIM methodology but there are other equally important phases of the work: logistic preparation, assembly and connection of modules. NIRON is a complete polypropylene pipe and fitting system for the distribution of hot and cold water in plumbing and air conditioning systems and for the conveyance of drinking water and alimentary fluids in industrial plants. The pipes and fittings that compose the NIRON range are manufactured using random copolymer polypropylene (PPR and PP-RCT), a plastic material with a special molecular structure ensuring high mechanical resistance and duration, even at high temperatures and pressures.