VARF systems are the right choice for demanding, medium-sized office, commercial/retail, hotel, and school facilities, etc. Thanks to a wide range of outdoor units with capacities up to 246 kW, they enable phased expansion of a site, with the option to connect indoor unit capacity totaling up to 200% of the outdoor unit capacity. The system allows flexible refrigerant piping design for installations with total lengths up to 1,000 m. The configuration consists of a cooling/heating Full DC Inverter outdoor unit, indoor units with precision expansion valves, and system branch joints. Operation down to −15 °C in cooling mode and down to −25 °C in heating mode, advanced EVi and VER technology, and a refrigerant-cooled PCB are just some of the distinguishing features of VARF outdoor units. In addition, they offer many automatic functions such as filling and draining the system, oil equalization, unit addressing, and a user-friendly commissioning procedure.