Type  VSD35

Numerous variants for many different installation situations

Slot diffusers with 35 mm diffuser face (nominal width) and adjustable air control elements

  • Nominal length from 600 to 1950 mm, 1 or 4 slots
  • Volume flow rate range 15 – 135 (l/s)/m or 54 – 486 (m³/h)/m
  • Diffuser face made of extruded aluminium sections
  • For variable and constant volume flows
  • Suitable for continuous linear arrangement
  • High induction results in a rapid reduction of the temperature difference and airflow velocity
  • Individually adjustable air control elements to meet individual local requirements


Optional equipment and accessories

  • Exposed diffuser face available in RAL CLASSIC colours
  • Diffuser face with extended border
  • Damper blade for volume flow rate balancing, can be adjusted through the diffuser face
  • Concealed screw fixing that simplifies installation of the diffuser after the ceiling has been completed
  • Symmetric and asymmetric plenum boxes, with or without lining
  • End plates, end angles, corner sections

VSD35-1-AK 00134729_0
  • Application
  • Description

Application

  • Type VSD35 slot diffusers are used as supply air or extract air devices in comfort zones
  • They blend in inconspicuously with continuous grid ceilings and plasterboard ceilings
  • Air discharge is one-way or alternating horizontal, or alternating angled; turbulent flow (mixed flow ventilation)
  • High induction results in a rapid reduction of the temperature difference and airflow velocity (supply air variant)
  • For variable and constant volume flows
  • For supply air to room air temperature differences from –10 to +10 K
  • For room heights up to 4 m (lower edge of suspended ceiling)
  • For suspended ceilings; suitable for restricted ceiling voids due to the low overall height of the plenum box
  • Suitable for continuous linear arrangement

Special characteristics

  • Individually adjustable air control elements to meet individual local requirements
  • High induction results in a rapid reduction of the temperature difference and airflow velocity
  • Diffuser face has been optimised for maximum volume flow rate at low sound power levels
  • Suitable for continuous linear arrangement

Nominal sizes

  • LN: 600, 750, 900, 1050, 1200, 1350, 1500, 1650, 1800, 1950 mm
  • Diffuser face available in intermediate sizes from 300 to 2550 mm, in increments of 1 mm

Variants

  • VSD35-*: 1, 2, 3 or 4 slots
  • VSD35-*-F: Diffuser face only
  • VSD35-*-E: Corner section
  • VSD35-...: Diffuser face without extended border
  • VSD35-.../B00: Diffuser face with extended border
  • VSD35-...: Black air control elements
  • VSD35-.../WW: White air control elements


Plenum box and diffuser face fixing

  • AK: Plenum box and clamp fixing
  • DK: Plenum box with lining and clamp fixing
  • AS: Plenum box and concealed screw fixing
  • DS: Plenum box with lining and concealed screw fixing
  • AA: Asymmetric plenum box and clamp fixing

Parts and characteristics

  • Diffuser face with individually adjustable air control elements
  • Plenum box for horizontal duct connection
  • Concealed screw fixing (facilitates installation of the diffuser face) or clamp fixing
  • Connecting pins and alignment plates to connect and align slot diffusers for a continuous linear arrangement

Attachments

  • M: Damper blade for volume flow rate balancing
  • C1, C2: Two end plates
  • C5, C6: Two end angles

Accessories

  • Lip seal

Useful additions

  • EP: Two end plates
  • EW: Two end angles
  • To be ordered separately for continuous linear runs

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 from extruded aluminium sections
  • Air control elements made of plastic, UL 94, V-0, flame retardant
  • Plenum box made of galvanised sheet steel
  • End plates and end angles made of aluminium
  • Lip seal made of rubber
  • Lining is mineral wool
  • Diffuser face with anodised finish, E6-C-0, natural colour
  • P1: Powder-coated, RAL CLASSIC colour
  • Air control elements similar to RAL 9005, black
  • WW: Air control elements similar to RAL 9010, white


Mineral wool

  • To EN 13501, fire rating class A1, non-combustible
  • RAL quality mark RAL-GZ 388
  • Biosoluble and hence hygienically safe according to the German TRGS 905 (Technical Rules for Hazardous Substances) and EU directive 97/69/EG
  • Faced with glass fibre fabric as a protection against erosion through airflow velocities of up to 20 m/s
  • Inert to fungal and bacterial growth

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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