| Product Code | Diameter |
|---|---|
| VSDR200 | 200 Dia |
| VSDR250 | 250 Dia |
| VSDR315 | 315 Dia |
| VSDR400 | 400 Dia |
| *Lead time applies |
WITH LOW SOUND POWER LEVEL FOR COMFORT AND INDUSTRIAL ZONES, WITH FIXED AIR CONTROL BLADES
Circular and square ceiling swirl diffusers
Nominal sizes 125, 160, 200, 250, 315, 400
Volume flow rate range 4 – 330 l/s or 14 – 1188 m³/h
Diffuser face made of galvanised sheet steel, powder-coated, or of aluminium (depending on variant)
For supply and extract air
For variable and constant volume flows
For all types of ceiling systems
With discharge nozzle ideal for cooling in case of freely suspended installation
High induction results in a rapid reduction of the temperature difference and airflow velocity
Air change rates of up to 35 per hour can be achieved by arranging several diffusers in a row with a minimum pitch of 0.9 m (centre line to centre line)
Ideal for comfort zones
Optional equipment and accessories
Exposed diffuser face available in RAL CLASSIC colours
Horizontal or vertical duct connection
Plenum box with cord-operated damper blade and pressure tap
Shallow plenum box
Variants
RFD-Q: Square diffuser face
RFD-R: Circular diffuser face
RFD-*-D: Diffuser face with discharge nozzle
Connection
K: Vertical duct connection, with duct collar
US: Vertical duct connection, with transition piece
A: Horizontal duct connection, with plenum box
Only RFD-R
UO: Vertical duct connection, with transition piece and cross bar
Only RFD-R-D
UD: Vertical duct connection, with transition piece, cross bar and discharge nozzle
N: Horizontal duct connection, with shallow plenum box to be installed above open cell ceilings
Parts and characteristics
Circular or square diffuser face
Diffuser face with radially arranged fixed air control blades
Attachments
M: Damper blade for volume flow rate balancing
MN: Pressure tap and cord-operated damper blade for volume flow rate balancing with the diffuser face in place
Accessories
Lip seal
Construction features
Spigot suitable for circular ducts to EN 1506 or EN 13180
Spigot with groove for lip seal (if accessory lip seal has been ordered)
Materials and surfaces
Q: Diffuser face made of aluminium
R: Diffuser face made of galvanised sheet steel
Plenum box, duct collar and cross bar made of galvanised sheet steel
Transition piece made of aluminium
Lip seal made of rubber
Diffuser face powder-coated RAL 9010, pure white
P1: Powder-coated, RAL CLASSIC colour