| Product Code | Face Size Metric |
|---|---|
| VSD595595350 | 595 x 595 350 circ |
| VSD595595500 | 595×595 500 circ |
| VSD395395 | 395×395 |
*Lead time applies
FOR COMFORT ZONES, WITH FIXED AIR CONTROL BLADES
Circular and square ceiling swirl diffusers that create high induction levels, for high room air change rates
Nominal sizes 300, 400, 500, 600, 625
Volume flow rate range 9 – 235 l/s or 31 – 846 m³/h
Diffuser face made of galvanised sheet steel, powder-coated
For supply and extract air
For variable and constant volume flows
For all types of ceiling systems, and with an extended border also suitable for 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
Plenum box with cord-operated damper blade and pressure tap
Variants
FD-Q: Square diffuser face
FD-R: Circular diffuser face
FD-*-Z: Supply air
FD-*-A: Extract air
Connection
H: Horizontal duct connection
V: Vertical duct connection
X: Flexible plenum box FLEXTRO
Parts and characteristics
Circular or square diffuser face
Diffuser face with radially arranged fixed air control blades
Plenum box for supply air, with an optimised equalising element that ensures a uniform airflow through the diffuser face
Simple installation of the diffuser face due to central fixing screw with decorative cap
Damper blade for volume flow rate balancing (optional)
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
Grille face made of galvanised sheet steel
V, H: Plenum box and cross bar made of galvanised sheet steel
X: Plenum box made of plastic and galvanised sheet steel
Lip seal made of rubber
Diffuser face powder-coated RAL 9010, pure white
P1: Powder-coated, RAL CLASSIC colour
Standards and guidelines
Sound power level of the air-regenerated noise measured according to EN ISO 5135
Maintenance
Maintenance-free as construction and materials are not subject to wear
Inspection and cleaning to VDI 6022