Type VSD35-3-AZ

Ventilation and extract ventilation combined in one casing

Slot diffusers with 35 mm nominal width, used as supply and extract air combination

  • Nominal length from 600 to 1200 mm, 3 slots
  • Volume flow rate range 8 – 40 l/s or 30 – 144 m³/h
  • Diffuser face made of extruded aluminium sections
  • For variable and constant volume flows
  • 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
  • Damper blade for volume flow rate balancing, can be adjusted through the diffuser face
  • Acoustic lining that ensures very good transmission loss
  • Spring clip fixing
  • End angles, fixing brackets

VSD35-3-AZ 00181308_0
  • Application
  • Description

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

  • LN: 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 spring clip fixing

Parts and characteristics

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

Attachments

  • Damper blade for volume flow rate balancing
  • End angles

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 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

Technical information

  • Function
  • Technology
  • Quick sizing
  • Specification text
  • Order code
Schematic illustration of VSD35-3-AZ with acoustic lining 00181302_0

① Diffuser face
② Adjustable air control element
③ Extract air spigot
④ Plenum box
⑤ Supply air spigot
⑥ End angle
⑦ Cords for supply air (white cord for opening, green cord for closing)
⑧ Cords for extract air (white cord for opening, green cord for closing)
Optional
⑨ Acoustic lining (reduces room-to-room cross talk)
⑩ Lip seal

Functional description

Slot diffusers direct the air from air conditioning systems at an angle into the room. The resulting airflow induces high levels of room air, thereby rapidly reducing the airflow velocity and the temperature difference between supply air and room air. The result is a mixed flow ventilation in comfort zones, with good overall room ventilation, creating only very little turbulence in the occupied zone.

Type VSD35-3-AZ slot diffusers have adjustable air control elements. The supply air to room air temperature difference may range from –10 to +10 K.

A damper blade (optional) simplifies volume flow rate balancing for commissioning.

Type VSD35-3-AZ diffusers are space saving supply and extract air combinations.

Nominal length600, 750, 900, 1050, 1200 mm
Number of slots3
Minimum volume flow rate, with ΔtZ = –6 K 8 – 15 l/s or 30 – 54 m³/h
Maximum volume flow rate, with LWA ≅ 50 dB(A)25 – 40 l/s or 90 – 144 m³/h
Supply air to room air temperature difference–10 to +10 K


Quick sizing – sound power level and total differential pressure

Nominal lengthVDamper blade position
Nominal lengthV45°90°
Nominal lengthVΔpt supply airΔpt extract airLWAΔpt supply airΔpt extract airLWAΔpt supply airΔpt extract airLWA
Nominal lengthl/sm³/hPadB(A)PadB(A)PadB(A)
600 8 30 63159517261324
600 15 54 19931311634854340
600 25 90 54264586454723712054
600 30 108 773750124655234117359
750 10 37 742112823281931
750 20 72 2815384431401077447
750 25 90 44244468484616711653
750 30 108 64354898705124116757
900 12 44 9623141026372829
900 20 72 241536372739977444
900 30 108 55334682605021716755
900 35 126 744551112825429622860
1050 15 54 12828171530583938
1050 25 90 34224048414416111051
1050 35 126 66434995805331621560
1050 40 144 8656521241045641328163
1200 15 54 11826201329554138
1200 30 108 44304479524721816556
1200 35 126 604148107715229722560
1200 40 144 795451140925538829363


Slot diffusers with individually manually adjustable air control elements and an aesthetically shaped face section with three slots, for angled one-way air discharge. Supply and extract air combination. For wall and bulkhead installation.

Ready-to-install component which consists of the diffuser face with individually adjustable black or white air control elements, and of a plenum box with a side entry spigot and a side extract air spigot.

Spring clip fixing or rigid fixing to the plenum box

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

Sound power level of the air-regenerated noise measured according to EN ISO 5135.

Transmission loss measured according to EN ISO 7235.

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

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 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

Technical data

  • Nominal length: 600, 750, 900, 1050, 1200 mm
  • Number of slots: 3
  • Minimum volume flow rate: 8 – 15 l/s or 30 – 54 m³/h
  • Maximum volume flow rate, with LWA ≅ 50 dB(A): 25 – 40 l/s or 90 – 144 m³/h
  • Supply air to room air temperature difference: –10 to +10 K

00135410_0

 Type
VSD35-3-AZ       Slot diffuser as supply and extract air combination

 Connection
       Plenum box
AK       With rigid fixing
AS       With spring clip fixing

 Acoustic lining for cross talk reduction (accessory)
No entry: none
ZT       With

 Damper blade for volume flow rate balancing
No entry: none
M       With

 Accessories
No entry: none
L       With lip seal

 

 Nominal size [mm]
600
750
900
1050
1200

 End pieces
No entry: none
C2       Both ends with factory fitted end angles

 Fixing (accessory)
No entry: none
W00       Fixing brackets for fixing the diffuser to the wall (supplied separately)

 Exposed surface
       No entry: anodised, E6-C-0, natural colour
P1       Powder-coated, specify RAL CLASSIC colour

       Gloss level
       RAL 9010 50 %
       RAL 9006 30 %
       All other RAL colours 70 %

 Colour of air control elements
       No entry: similar to RAL 9005, black
WW       Similar to RAL 9010, white

 

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Contact

Thank you for your message!

Visual contact Visual contact

Your message is send and will be processed shortly.
Our department for Service-Requests will contact you asap.
For general question regarding products or services you can also call:
Tel.: +49 (0)2845 / 202-0 | Fax: +49 (0)2845/202-265