Type 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 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, air control blades in black or white
  • Horizontal or vertical duct connection
  • Plenum box with cord-operated damper blade and pressure tap

VDW-Q-Z/500×24 00134073_0


  • Application
  • Description

Application

  • Type VDW 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)
  • Individually adjustable air control blades to meet individual requirements
  • For variable and constant volume flows
  • For supply air to room air temperature differences from –12 to +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 characteristics

  • Air control blades can be adjusted individually manually for adjusting the air pattern
  • For all types of ceiling systems, and with an extended border also suitable for freely suspended installation
  • Black or white air control blades
  • 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)

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

  • H: Horizontal duct connection
  • V: Vertical duct connection

Parts and characteristics

  • Circular or square diffuser face
  • Diffuser face with individually manually adjustable air control blades
  • 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

  • Diffuser 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
  • Air control blades made of plastic, UL 94, V-0, flame retardant
  • Lip seal made of rubber
  • Exposed diffuser face powder-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

  • Maintenance-free as construction and materials are not subject to wear
  • Inspection and cleaning to VDI 6022

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Tel.: +39 029829741 | Fax: +39 029829760