Type QLW-AZ

Supply and extract air combination for installation into walls and bulkheads, one-way air discharge, for comfort zones

Displacement flow diffusers with supply and extract air functions combined in one casing

  • Nominal lengths 600 – 1200 mm
  • Volume flow rate range 12 – 45 l/s or 43 – 162 m³/h
  • Variant with cross-talk attenuator ensures very good transmission loss
  • Perforated plate, square pitch
  • Circular duct connections
  • Horizontal duct connection


Optional equipment and accessories

  • Exposed surface in RAL CLASSIC colours
  • Damper blade for volume flow rate balancing
  • Cross-talk attenuator
  • Fixing brackets

QLW-AZ 00132212_0


  • Application
  • Description

Application

  • Type QLW-AZ displacement flow diffusers are supply and extract air combinations for use in comfort zones
  • Attractive design element for building owners and architects with demanding aesthetic requirements
  • For installation into walls or bulkheads, either individually or several diffusers arranged in a row
  • Low-velocity airflow, causing only low levels of induction and resulting in low-turbulence displacement ventilation.
  • Excellent air quality in the occupied zone
  • For variable and constant volume flows
  • For supply air to room air temperature differences from –6 to –1 K

Special characteristics

  • One-way air discharge
  • Diffuser face screw-fixed to casing, hence easy to remove
  • Horizontal duct connection

Nominal sizes

  • L: 600, 750, 900, 1050, 1200 mm

Variants

  • QLW-AZ-ZT: Displacement flow diffuser with cross-talk attenuator

Parts and characteristics

  • Casing
  • Removable diffuser face made of perforated sheet metal
  • Equalising element

Attachments

  • Damper blade for volume flow rate balancing

Accessories

  • Lip seal
  • Wall fixing bracket

Useful additions

  • Retrofit cross-talk attenuator

Construction features

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

Materials and surfaces

  • The casing of the displacement flow diffuser, and the cross-talk attenuator casing, diffuser face and equalising element are made of galvanised sheet steel
  • Lip seal made of rubber
  • Acoustic lining of the cross-talk attenuator is mineral wool
  • Exposed diffuser face powder-coated RAL 9010, pure white
  • P1: Powder-coated, RAL CLASSIC colour


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/EC
  • 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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Tel.: +39 029829741 | Fax: +39 029829760