Air to water 4 pipe units QUATTRO PROZONE HC: 49 kW ÷ 138 kW CC: 45 kW ÷ 126 kW RC: 59 kW ÷ 171 kW EXT: -15°C OUT: 60°C Multi-functional air-water unit, for outdoor installation, equipped with scroll compressors and axial fans for associated 4 pipe systems. Product page Documentation QUATTRO R454B HC: 145 kW ÷ 344 kW CC: 140 kW ÷ 321 kW RC: 178 kW ÷ 433 kW EXT: -20°C OUT: 68°C MULTIFUNCTIONAL AIR-WATER UNITS WITH AXIAL FANS AND HERMETIC SCROLL COMPRESSORS FOR ASSOCIATED SYSTEMS WITH 4 PIPES Product page Documentation QuickSel advanced search This email address is being protected from spambots. You need JavaScript enabled to view it.