The TSA is a high induction swirl diffuser with an adjustable flow pattern. The horizontal radial swirl jet is used mainly in cooling applications that use cool supply air or for ventilation with isothermal supply air. The vertical compact swirl jet with warm supply air is used in heating applications. Adjustment of the supply air pattern is effected by moving the internal adjustment element (cylinder). It is also possible to change from cooling mode to heating mode by adjusting the flow pattern using an electric or wax bulb actuator.