TVS is a ductable unit, designed to guarantee high in small or medium-sized rooms with nominal air flow rates from 800 to 5200 m³/h. It is suitable for two-pipe systems, but the availability (as an accessory) of the secondary water coil, which can be installed inside the unit downstream of the main coil, makes it also suitable for four-pipe systems. The unit is suitable for both horizontal installation in the false ceiling and vertical installation on the wall for greater versatility of use.