QLV

Application

• Type QLV displacement flow diffusers are used as supply air units for industrial and comfort zones
• Attractive design element for building owners and architects with demanding aesthetic requirements
• Floor-standing installation on walls or in corners
• Low-velocity airflow, causing only low levels of induction and resulting in low-turbulence displacement ventilation.
• Excellent air quality in the occupied zone
• Draught-free and economical ventilation and air conditioning also of larger internal spaces such as shop floors or auditoriums, with several displacement flow diffusers in a regular arrangement
• For variable and constant volume flows
• For supply air to room air temperature differences from –6 to –1 K

Special characteristics

• Three-way or five-way air discharge
• Duct connection at the top or bottom
• Optional damper blade for volume flow rate balancing

Nominal sizes

• ∅D: 160, 200, 250, 315, 400, 500, 630 mm
• H: 500, 600, 800, 1000, 1250, 1500, 1750 mm

Variants

• QLV-90: 90° air discharge
• QLV-180: 180° air discharge
• QLV-...-O: Spigot at the top
• QLV-...-U: Spigot at the bottom

Parts and characteristics

• Polygon casing
• Equalising element and airflow straightener that ensure a uniform supply air discharge
• Lip seal, optional for QLV-...-O

Attachments

• Damper blade for volume flow rate balancing

Accessories

• Lip seal
• Wall mount

Construction features

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

Materials and surfaces

• Top cover, base, spigot and side parts made of galvanised sheet steel
• S7: Top cover and base made of aluminium
• Corner and edge trims are extruded aluminium sections
• Airflow straightener made of plastic
• Equalising element made of synthetic fibres
• Lip seal made of rubber
• Surface powder-coated RAL 9010, pure white
• P1: Powder-coated, RAL CLASSIC colour
• S7: Surface galvanised

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