RCD is a circular ceiling diffuser with concentric rings used for introducing or evacuating the air.
The circular ceiling diffuser is used in installations with constant or variable air flow.
The ceiling diffuser has a conical construction, a removable central core and is equipped with butterfly damper.
The ceiling diffuser is delivered with a bracket-type fastening system.
Dimensional range: Ø150, Ø200, Ø250, Ø300, Ø350.
1 – RCD Circular ceiling diffuser
2 – Bracket system (supplied with RCD)
3 – Plenum box (on request)
Ak [m²] - The free surface
X [m] - The length of the air jet at a speed of 0.25 m/s
NR [dB (A)] - Noise level without room attenuation
Veff [m/s] - The effective air velocity
∆Pt [Pa] - Pressure loss
The ceiling diffuser can be delivered with a connecting plenum to the circular duct, with a horizontal connection.
The plenum is provided with suspension elements (lugs) and bead roll on the spigot, for easy fixing of the flexible duct.
On request, the product can also be delivered with a connection (CR) for flexible duct.
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 with 6 mm thick elastomeric rubber.
Connection for flexible duct (CR)
CR is made of galvanized steel sheet and is used as a connecting element between the circular ceiling diffuser and the flexible duct.
The ceiling diffuser is mounted in a false ceiling, at the end of the duct or suspended.
Rigid duct installation
Flexible duct installation
For installation in flexible duct, it is recommended to use a connection (CR) between the circular ceiling diffuser and the duct. The connection element is ordered separately.
Suspended in the ceiling