VRF system with R410a gas and condensation control, consisting of one to four outdoor units and, depending on the size and the number of outdoor modules, two to eighty indoor units of the following types: Cassette 600mmx600mm, 840mmx840mm, 910mmx910mm (false ceiling installation), Floor-Ceiling (wall or ceiling installation), Low-head Ducted or High-head Ducted (horizontal installation), Console (floor installation), Wall (wall installation). The outdoor unit uses DC inverter technology on both the fans and the compressors. The compressors are the scroll type. The cooling connections are made with “Y” joints (supplied as obligatory accessories). System operation is managed via microprocessor adjustment on non-polarised serial in CAN BUS protocol. The wired panel and infrared remote control are always supplied as standard with the indoor unit. A centralised controller is also available.