Type VDW

With low sound power level for comfort zones, with individually manually adjustable air control blades

Circular and square ceiling swirl diffusers for high room air change rates

  • Nominal sizes 300, 400, 500, 600, 625, 825
  • Volume flow rate range 7 – 470 l/s or 25 – 1692 m³/h
  • Diffuser face made of galvanised sheet steel, powder-coated
  • For supply and extract air
  • For variable and constant volume flows
  • For all types of ceiling systems, and with an extended border also suitable for freely suspended installation
  • High induction results in a rapid reduction of the temperature difference and airflow velocity
  • Air change rates of up to 35 per hour can be achieved by arranging several diffusers in a row with a minimum pitch of 0.9 m (centre line to centre line)
  • Ideal for comfort zones


Optional equipment and accessories

  • Exposed diffuser face available in RAL CLASSIC colours, air control blades in black or white
  • Horizontal or vertical duct connection
  • Plenum box with cord-operated damper blade and pressure tap
  • Acoustically optimised plenum box FLEXTRO

VDW-Q-Z/500×24 00134073_0
  • Application
  • Description

Application

  • Type VDW ceiling swirl diffusers are used as supply air or extract air diffusers for comfort zones
  • Attractive design element for building owners and architects with demanding aesthetic requirements
  • Horizontal swirling supply air discharge for mixed flow ventilation
  • The efficient swirl creates high induction levels, thereby rapidly reducing the temperature difference and airflow velocity (supply air variant)
  • Individually adjustable air control elements to meet individual local requirements
  • For variable and constant volume flows
  • For supply air to room air temperature differences from –12 to +10 K
  • For room heights up to 4 m (lower edge of suspended ceiling)
  • For all types of ceiling systems
  • With an extended border also suitable for freely suspended installation (supply air variant)

Special characteristics

  • Air control blades can be adjusted individually manually for adjusting the air pattern
  • For all types of ceiling systems, and with an extended border also suitable for freely suspended installation
  • Black or white air control blades
  • Air change rates of up to 35 per hour can be achieved by arranging several diffusers in a row with a minimum pitch of 0.9 m (centre line to centre line)

Nominal sizes

  • 300 × 8, 400 × 16, 500 × 24, 600 × 24, 600 × 48, 625 × 24, 625 × 54, 825 × 72

Variants

  • VDW-Q: Square diffuser face
  • VDW-R: Circular diffuser face
  • VDW-*-Z: Supply air
  • VDW-*-A: Extract air


Connection

  • H: Horizontal duct connection
  • V: Vertical duct connection
  • X: Flexible plenum box FLEXTRO

Parts and characteristics

  • Circular or square diffuser face
  • Diffuser face with individually manually adjustable air control blades
  • Simple installation of the diffuser face due to central fixing screw with decorative cap
  • Damper blade for volume flow rate balancing (optional)

Attachments

  • M: Damper blade for volume flow rate balancing
  • MN: Pressure tap and cord-operated damper blade for volume flow rate balancing with the diffuser face in place

Accessories

  • Lip seal

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

  • Grille face made of galvanised sheet steel
  • V, H: Plenum box and cross bar made of galvanised sheet steel
  • X: Plenum box made of plastic and galvanised sheet steel
  • Air control elements made of plastic, UL 94, V-0, flame retardant
  • Lip seal made of rubber
  • Exposed diffuser face powder-coated RAL 9010, pure white
  • P1: Powder-coated, RAL CLASSIC colour
  • Air control blades for supply air similar to RAL 9005, black; extract air variant without air control blades
  • Q11: Air control blades for extract air similar to RAL 9005, black
  • Q21: Air control blades for supply air and extract air similar to RAL 9010, white

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 the VDW, with plenum box for horizontal duct connection 00127667_0..

A VDW-Q
B VDW-R
① Diffuser face
② Central fixing screw
③ Adjustable air control blades
④ Plenum box
⑤ Cross bar
⑥ Suspension hole
⑦ Spigot
Optional
⑧ Lip seal
⑨ Damper blade for volume flow rate balancing
⑩ Pressure tap
⑪ Green cord for closing the damper blade
⑫ White cord for opening the damper blade
⑬ Measuring tube
⑭ Text label indicating plenum box variant

Functional description

Ceiling swirl diffusers in air conditioning systems create a swirl to supply air to rooms. 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. Ceiling swirl diffusers allow for large volume flow rates. 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 VDW ceiling swirl diffusers have adjustable air control blades. The air pattern can be adjusted to meet different local requirements. Horizontal air discharge is one-way, two-way or omni directional. Vertical air discharge is possible but only for heating. The supply air to room air temperature difference may range from –12 to +10 K.

A damper blade (optional) simplifies volume flow rate balancing for commissioning. Pressure tap and cord-operated damper blade (optional) allow for volume flow rate balancing with the diffuser face in place.

To give rooms an aesthetic, uniform look, Type VDW diffusers may also be used for extract air. Air control blades are not required for extract air applications.

Nominal sizes300, 400, 500, 600, 625, 825 mm
Minimum volume flow rate, with ΔtZ = –6 K 7 – 99 l/s or 25 – 357 m³/h
Maximum volume flow rate, with LWA ≅ 50 dB(A)80 – 470 l/s or 288 – 1692 m³/h
Supply air to room air temperature difference–12 to +10 K


Quick sizing – sound power level and total differential pressure

Nominal size V Damper blade position
Nominal size V 45°90°
Nominal size V ΔptLWAΔptLWAΔptLWA
Nominal size l/s m³/h PadB(A)PadB(A)PadB(A)
300 × 8 7 26 1<151<151<15
300 × 8 35 126 152318223024
300 × 8 60 216 453953388740
300 × 8 85 306 91501055017451
400 × 16 13 46 1<151<151<15
400 × 16 60 216 132215232825
400 × 16 100 360 363842397842
400 × 16 140 504 7150835015454
500 × 24 19 70 1<151<153<15
500 × 24 70 252 111914193424
500 × 24 125 450 3538453710842
500 × 24 175 630 6850894921254
600 × 24, 625 × 24 28 102 1<151<152<15
600 × 24, 625 × 24 105 378 112015213322
600 × 24, 625 × 24 165 594 263437348336
600 × 24, 625 × 24 260 936 6550915120555
600 × 48 40 145 1<152<155<15
600 × 48 130 468 122118235029
600 × 48 210 756 3237474013145
600 × 48 305 1098 6750985527660
625 × 54 52 186 2<152<157<15
625 × 54 140 504 132216244833
625 × 54 225 810 3438413912551
625 × 54 310 1116 6450775223864
825 × 72 99 357 2<154<1510<15
825 × 72 225 810 132421275133
825 × 72 400 1440 4144654916154
825 × 72 470 1692 5650905722261


Quick sizing – sound power level and total differential pressure

Nominal size V Damper blade position
Nominal size V 45°90°
Nominal size V ΔptLWAΔptLWAΔptLWA
Nominal size l/s m³/h PadB(A)PadB(A)PadB(A)
300 × 8 7 26 1<151<151<15
300 × 8 30 108 122014202221
300 × 8 55 198 413846387439
300 × 8 80 288 8750985115752
400 × 16 13 46 1<151<151<15
400 × 16 55 198 112113202620
400 × 16 100 360 383944408540
400 × 16 140 504 7450865116752
500 × 24 19 70 1<151<153<15
500 × 24 70 252 101814213524
500 × 24 125 450 3136454011243
500 × 24 180 648 6550945423359
600 × 24, 625 × 24 28 102 1<151<152<15
600 × 24, 625 × 24 100 360 102213233026
600 × 24, 625 × 24 170 612 283838408743
600 × 24, 625 × 24 240 864 5650755417457
600 × 48 40 145 1<152<154<15
600 × 48 120 432 102216263931
600 × 48 200 720 2738434410948
600 × 48 280 1008 5350855821463
625 × 54 52 186 2<153<157<15
625 × 54 130 468 102316264233
625 × 54 210 756 2738424410949
625 × 54 290 1044 5150815920862
825 × 72 99 357 3<154<1510<15
825 × 72 210 756 112517274628
825 × 72 320 1152 2639394210742
825 × 72 430 1548 4750705519354


Quick sizing – sound power level and total differential pressure

Nominal sizeVDamper blade position
Nominal sizeV45°90°
Nominal sizeVΔptLWAΔptLWAΔptLWA
Nominal sizel/sm³/hPadB(A)PadB(A)PadB(A)
600 × 24, 625 × 24 28 102 1<151<152<15
600 × 24, 625 × 24 115 414 142121213928
600 × 24, 625 × 24 200 720 4137653911744
600 × 24, 625 × 24 290 1044 87501365224557


Ceiling swirl diffusers with square or circular diffuser face. Supply air and extract air variants for comfort zones, for a maximum air change rate of 35 per hour. Diffuser face with individually manually adjustable air control blades for horizontal swirling supply air discharge creating high induction levels. For installation into all types of suspended ceilings.

Ready-to-install component which consists of the diffuser face with radially arranged, individually adjustable black or white air control blades, and of a plenum box, equalising element (only supply air variants), side entry or top entry spigot, cross bar, and suspension holes or suspension lugs.

The diffuser face is fixed to the cross bar with a central screw, concealed by a decorative cap.

Spigot suitable for ducts to EN 1506 or EN 13180.

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

Special characteristics

  • Air control blades can be adjusted individually manually for adjusting the air pattern
  • For all types of ceiling systems, and with an extended border also suitable for freely suspended installation
  • Black or white air control blades
  • Air change rates of up to 35 per hour can be achieved by arranging several diffusers in a row with a minimum pitch of 0.9 m (centre line to centre line)

Materials and surfaces

  • Grille face made of galvanised sheet steel
  • V, H: Plenum box and cross bar made of galvanised sheet steel
  • X: Plenum box made of plastic and galvanised sheet steel
  • Air control elements made of plastic, UL 94, V-0, flame retardant
  • Lip seal made of rubber
  • Exposed diffuser face powder-coated RAL 9010, pure white
  • P1: Powder-coated, RAL CLASSIC colour
  • Air control blades for supply air similar to RAL 9005, black; extract air variant without air control blades
  • Q11: Air control blades for extract air similar to RAL 9005, black
  • Q21: Air control blades for supply air and extract air similar to RAL 9010, white

Technical data

  • Nominal sizes: 300, 400, 500, 600, 625, 825 mm
  • Minimum volume flow rate, with ΔtZ = –6 K: 7 – 99 l/s or 25 – 357 m³/h
  • Maximum volume flow rate, with LWA ≅ 50 dB(A): 80 – 470 l/s or 288 – 1692 m³/h
  • Supply air to room air temperature difference: –12 to +10 K

00133699_0

 Type
VDW       Swirl diffuser

 Construction style
R       Circular
Q       Square

 System
Z       Supply air
A       Extract air

 Connection
H       Horizontal
V       Vertical

 Damper blade for volume flow rate balancing
       No entry: without damper blade
M       With
MN       With cords and pressure tap (only for connection H)

 Accessories
       No entry: without accessories
L       With lip seal

 

 Nominal size [mm]
300 × 8
400 × 16
500 × 24
600 × 24
600 × 48
625 × 24

       VDW-Q only
625 × 54
825 × 72

 Colour of air control elements
No entry: supply air – black air control blades, extract air – no air control blades
Q11       Extract air – black air control blades
Q21       Supply air – white air control blades
       Extract air – white air control blades

 Exposed surface
       No entry: powder-coated RAL 9010, pure white
P1       Powder-coated, specify RAL CLASSIC colour

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

 

Share page

Recommend this page

Recommend this page by sending a link by mail.

Fields marked with an (*) are required fields.

Share page

Thank you for your recommendation!

Your recommendation has been sent and should arrive shortly.


Contact

We are here for you

Visual contact Visual contact

Please specify your message and type of request
Tel.: +49 (0)2845 / 202-0 | Fax: +49 (0)2845/202-265

Fields marked with an (*) are required fields.

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

Contact

We are here for you

Visual contact Visual contact

Please specify your message and type of request
Tel.: +49 (0)2845 / 202-0 | Fax: +49 (0)2845/202-265

Attachment (max. 10MB)

Fields marked with an (*) are required fields.

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