Type VDL

For high rooms, with adjustable air control blades

Circular ceiling swirl diffusers, with manual or motorised adjustment of the air pattern to ensure draught-free ventilation of the occupied zone both in heating and cooling modes

  • Nominal sizes 315, 400, 630, 800
  • Volume flow rate range 65 – 1080 l/s or 234 – 3888 m³/h
  • Diffuser face made of galvanised, powder-coated sheet steel and of aluminium
  • For supply air
  • For variable and constant volume flows
  • High induction results in a rapid reduction of the temperature difference and airflow velocity
  • Discharge direction can be adjusted manually or with an actuator
  • Diffuser face with aerodynamically optimised contours
  • Ideal for high rooms


Optional equipment and accessories

  • Exposed diffuser face available in RAL CLASSIC colours
  • Horizontal or vertical duct connection
  • An extended border improves the horizontal air discharge in cooling mode
  • Protective cage for use in gymnasiums
  • Actuators for adjusting the air discharge direction
  • Diffuser face can be removed from the room side

VDL 00132524_0


  • Application
  • Description

Application

  • Type VDL ceiling swirl diffusers are used as supply air diffusers for high rooms in comfort and industrial zones
  • For production halls, gymnasiums, theatres and conference rooms as well as for large internal spaces in airports, railway stations and shopping centres
  • For mixed flow ventilation with different air patterns in heating and cooling modes
  • Horizontal swirling supply air discharge in cooling mode
  • The efficient swirl creates high induction levels, thereby rapidly reducing the temperature difference and airflow velocity
  • Angled or vertical air discharge in heating mode
  • For variable and constant volume flows
  • For supply air to room air temperature differences from –12 to +15 K
  • For room heights exceeding 3.8 m
  • With freely suspended installation, an extended border supports the horizontal air discharge in cooling mode

Special characteristics

  • For high rooms, with adjustable air control blades
  • Diffuser face with aerodynamically optimised contours
  • The air pattern can be adjusted manually or with an actuator
  • Horizontal or vertical duct connection

Nominal sizes

  • 315, 400, 630, 800

Variants

  • A: Diffuser face without flange
  • B: Diffuser face with flange


Connection

  • F: Diffuser face only
  • H: Horizontal duct connection, with plenum box
  • V: Vertical duct connection, with plenum box


Diffuser face

  • N: Non-removable diffuser face
  • D: Removable diffuser face, only in variant with plenum box

Parts and characteristics

  • Circular diffuser face
  • Removable or non-removable diffuser face
  • Radially arranged fixed or adjustable blades for air discharge from horizontal (0°) to vertical (90°)
  • Diffuser face with or without flange
  • Adjustment mechanism covered by decorative cap

Accessories

  • Lip seal
  • Electric actuators for adjusting the air discharge direction
  • Extended border and protective cage

Useful additions

  • TDC temperature difference control module

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

  • Blades, casing, duct collar, extended border, plenum box and cross bar made of galvanised sheet steel
  • Diffuser face and decorative cap made of aluminium
  • Protective cage made of steel mesh
  • Blades, duct collar, extended border, plenum box, diffuser face and decorative cap 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

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