... -automatic control - Modular design enables easy expanding capacity from 20ton to 140ton. - Convenient operation VM (Modular unit) & VFS (Mini) air ... -in self-diagnosable system, and is controlled by microcomputer. Applicable to hotels, villas, hospitals, cinemas, stadiums, recreations, office blocks, factories ... this unit saves water greatly. And the unit is easy to install, manage and maintain.