VSR is a swirl air diffuser with radially adjustable blades.
The diffuser is recommended for installations with constant or variable air flow and is intended for spaces with heights between 4 and 10m. It is used for introduction of air.
The design of the blades, their radial arrangement and the swirl action determine a high level of induction rate.
VSR is available in 3 configurations:
VSR – manual operation
VSR-S – electric operation via servomotor
VSR-T – thermal operation by means of a thermostat
The VSR-S is equipped with a Belimo servomotor. The servomotor is selected according to the diffuser size, supply voltage, safety function and other technical specifications mentioned in the project.
Dimensional range: Ø250, Ø315, Ø400, Ø500, Ø630.
1- VSR diffuser
2- Plenum box (optional)
3- Perforated damper mounted on plenum (optional)
Note: The values in the table are given for blades tilted at 45 ° and for a temperature difference of 5 degrees.
Ak [m²] - The free surface
X [m] - The length of the air jet
NR [dB (A)] - Noise level without room attenuation
∆Pt [Pa] - Pressure loss
Veff [m/s] -The effective air velocity
The diffuser can be delivered with a connecting plenum to the circular duct, with horizontal connection.
The plenum is provided with suspension elements (lugs) and bead roll on the spigot, for easy fixing of the flexible duct.
The plenum is delivered insulated or uninsulated.
Optionally, a perforated damper can be mounted on the plenum connection to balance the air flow.
Adapter (plenum box)
The adapter is made of galvanized steel sheet Z140 and is equipped with 4 lugs for suspension.
On request, the plenum can be insulated inside with 6 mm thick elastomeric rubber.
The perforated damper is mounted on the adapter spigot and has the role of balancing the air flow.
The diffuser is mounted in a continuous ceiling or suspended. Fastening is done with screws.
Installation in continuous ceiling
Suspended in the ceiling