VSD35-3-AZ

Application

• Type VSD35-3-AZ slot diffusers are used as supply and extract air combinations in comfort zones
• Angled one-way air discharge for turbulent flow (mixed flow ventilation)
• High induction results in a rapid reduction of the temperature difference and airflow velocity
• 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 horizontal installation into walls and bulkheads

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

• L_N: 600, 750, 900, 1050, 1200 mm

Variants

• VSD35-3-AZ-...: supply and extract air combination without acoustic lining (cross talk reduction)
• VSD35-3-AZ-...-ZT: Supply and extract air combination with acoustic lining (cross talk reduction)
• VSD35-3-AZ-...: Black air control elements
• VSD35-3-AZ-.../WW: White air control elements

Plenum box and diffuser face fixing

• AK: Plenum box with rigid fixing
• AS: Plenum box with screw fixing

Parts and characteristics

• Diffuser face with individually adjustable air control elements
• Plenum box for horizontal duct connection
• Screw fixing (facilitates installing the diffuser face) or screw fixing

Attachments

• Damper blade for volume flow rate balancing
• End angle

Accessories

• Lip seal
• Fixing brackets

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 and fixing brackets made of galvanised sheet steel
• End angle made of aluminium
• Lip seal made of rubber
• Acoustic lining of the cross-talk attenuator 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/EC
• Faced with glass fibre fabric as a protection against abrasion 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