• Smaller Constant Volume AHU/RTU (Typically 15 tons or less) • Up to 24 zones • Pressure Dependent •VariTrane • Used in Larger Buildings seeking ideal occupant comfort • Very Flexible System Control (more complex sequences) • Larger Variable Volume AHU/RTU equipment (up to 130 Tons) • Up to 120+ zones • 30% fan energy savings.. Download scientific diagram | Schematic diagram of a typical variable air volume (VAV) system. Adapted from [20]. from publication: Control Strategies in Multi-Zone Air Conditioning Systems | In a.
Schematic diagram of a built-up VAV system served by chilled water and hot water coils. (Source: IBPSA-USA BEM Workshop) A Variable Air Volume (VAV) system is an all-air HVAC system that varies the amount of supply air flowing to each zone to maintain comfort while generally keeping the supply temperature of the air fixed (or at least.. Variable Air Volume Systems - Variable Air Volume (VAV) systems are the best way to zone especially in large buildings. A VAV system with the proper controls and setup will help the building owner realize large savings in energy usage.. Variable Air Volume Systems - VAV System Diagram and Design. Fan Powered VAV Boxes | VAV Box Advantages.