VDW

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