PRP SERIES  are air cooled liquid modular chillers with natural refrigerant R290. R290 represents one of the most attractive alternative to the traditional HFC refrigerants characterized by high GWP. This natural fluid has a zero ozone depletion potential (ODP = 0), a negligible direct greenhouse affect (GWP = 3) and also has very high coefficient of performance. As a result, the life cycle costs are significantly lower compared to similar systems with traditional HFCs. These units are designed to reduce the refrigerant charge per circuit and ensure high unit redundancy. A detailed safety-oriented design ensure safe operation of the systems at every working conditions.