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VDW-Q-Z/500×24
Nominal sizes
□500×24
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Circular diffuser faces with circular plenum box

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Square diffuser face with square plenum box

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Circular face style with circular plenum box and top entry spigot

 

 

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Circular diffuser face with white air control blades

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Air terminal device up to size 825

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VDW    

WITH LOW SOUND POWER LEVEL FOR COMFORT ZONES, WITH INDIVIDUALLY MANUALLY ADJUSTABLE AIR CONTROL BLADES 


Circular and square ceiling swirl diffusers for high room air change rates

  • Nominal sizes 300, 400, 500, 600, 625, 825

  • Volume flow rate range 7 – 470 l/s or 25 – 1692 m³/h

  • Diffuser face made of galvanised sheet steel, powder-coated

  • 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

  • Very high room air change rate due to row arrangement with a minimum pitch distance of 0.9 m

  • Ideal for comfort zones

  • Circular diffuser faces can be easily mounted without tools in a circular plenum box with horizontal spigot

 

Optional equipment and accessories

  • Exposed diffuser face available in RAL CLASSIC colours, air control blades in black or white

  • Horizontal or vertical duct connection

  • Square plenum box with cord-operated damper unit and pressure tap

 

 

 


General information

Application

  • Ceiling swirl diffusers are used as supply air or extract air diffusers for comfort zones

  • Attractive design element for building owners and architects with demanding aesthetic requirements

  • Horizontal swirling supply air discharge for mixed flow ventilation

  • The efficient swirl creates high induction levels, thereby rapidly reducing the temperature difference and airflow velocity (supply air variant)

  • For variable and constant volume flows

  • For supply air to room air temperature differences from -12 – +10 K

  • For room heights up to 4 m (lower edge of suspended ceiling)

  • For all types of ceiling systems

  • With an extended border also suitable for freely suspended installation (supply air variant)



Special features

  • High induction results in a rapid reduction of the supply air to room air temperature difference and airflow velocity

  • For all types of ceiling systems, and with an extended border also suitable for freely suspended installation

  • Horizontal or vertical duct connection

  • Very high room air change rate possible thanks to row arrangement with a minimum pitch distance of 0.9 m



Nominal sizes

  • 300 × 8, 400 × 16, 500 × 24, 600 × 24, 600 × 48, 625 × 24, 625 × 54, 825 × 72



Variants

  • VDW-Q: Square diffuser face

  • VDW-R: Circular diffuser face

  • VDW-*-Z: Supply air

  • VDW-*-A: Extract air

Connection on

  • H: Horizontal duct connection

  • V: Vertical duct connection



Accessories

Lip seal

  • For circular plenum boxes with horizontal connection spigot, the lip seal is only available in combination with the flow adjustment damper. Otherwise, it can always be selected optionally.



Attachments

  • M: Damper element for volume flow rate balancing

  • MN: Pressure tap and cord-operated damper unit for volume flow rate balancing with the diffuser face in place (only possible with square plenum box)



Construction features

  • Spigot suitable for circular ducts to EN 1506 or EN 13180


Square plenum boxes and plenum boxes with vertical connection

  • With spigot made of galvanised sheet steel

  • Groove only available if lip density characteristic has been selected

 





Circular plenum boxes with horizontal spigot for nominal sizes 250, 400L, 400H and 600

  • Spigot made of black ABS

  • Spigots are fitted with a groove for a lip seal

  • Retrofitting of the lip seal is possible at a later stage

  • Damper blade and lip seal (optional) are factory fitted

  • 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 cap

  • 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




Materials and surfaces

  • Grille face made of galvanised sheet steel

  • Q; R: Plenum box made of galvanised sheet steel including galvanised sheet steel cross bar to support the diffuser face

  • Plenum boxes with vertical connection and square plenum boxes with horizontal connection: for supply air always with galvanised perforated plate for air distribution

  • Circular plenum boxes with horizontal spigot: Equipped as a plenum box for supply air with an equalising element made of polyester

  • Square plenum boxes and plenum boxes with vertical spigot: Spigot made of galvanised sheet steel

  • Circular plenum boxes with horizontal spigot: Spigot made of black ABS, according to UL94, V0 flame retardant

  • Air control blades made of plastic, UL 94, V-0, flame retardant

  • Lip seal made of Evoprene

  • Diffuser face coated RAL 9010, pure white

  • P1: Powder-coated, RAL Classic colour

  • Air control blades for supply air similar to RAL 9005, black; extract air variant without air control blades

  • Q11: Air control blades for extract air similar to RAL 9005, black

  • Q21: Air control blades for supply air and extract air similar to RAL 9010, white



Standards and guidelines

  • Sound power level of the air-regenerated noise measured according to EN ISO 5135



Maintenance

  • Low maintenance as construction and materials are not subject to wear

  • Inspection and cleaning to VDI 6022


Downloads

product information

certificates

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