The experience gained by Clivet in the high-capacity chiller sector has resulted in the WDH-3 series, with the following features: EFFICIENCY - New high capacity screw compressors and the shell-and-tube exchangers specially developed for the gas R-134a: the best compromise to boost efficiency while limiting costs. The compressors are managed with continuous adjustment of the capacity. The heat exchangers are specifically sized for best adaptation to the other parts of the refrigerant circuit. The latter is fitted with an economiser exchanger for further operating efficiency; SELF-ADAPTATION - New, modern and intelligent electronic control directly developed by Clivet. This customisation allows better management of all the circuit components: continual adapting of chiller operating parameters to the load conditions of the system in which it is installed reduces consumption while the working life of the parts increases; STURDINESS - Load-bearing frame in enamelled hot-galvanised sheet metal with semi-hermetic double-screw compressors and shell-and-tube evaporator ensuring reliability and constant performance. These units may be combined with the dry coolers of the REM2 series.