Type VD

For high rooms, with adjustable air control blades

Square ceiling swirl diffusers, with manual or motorised adjustment of the air pattern to ensure draught-free ventilation of the occupied zone both in heating and cooling modes

  • Nominal sizes 425, 600, 775, 1050
  • Volume flow rate range 95 – 1490 l/s or 342 – 5364 m³/h
  • Grille face made of aluminium with anodised finish
  • For supply air
  • For variable and constant volume flows
  • High induction results in a rapid reduction of the temperature difference and airflow velocity
  • Discharge direction can be adjusted manually or with an actuator
  • Ideal for high rooms


Optional equipment and accessories

  • Exposed diffuser face available in RAL CLASSIC colours
  • Horizontal or vertical duct connection
  • An extended border improves the horizontal air discharge in cooling mode
  • Protective cage for use in gymnasiums
  • Actuators for adjusting the air discharge direction

VD 00137242_0
  • Application
  • Description

Application

  • Type VD ceiling swirl diffusers are used as supply air diffusers for high rooms in comfort and industrial zones
  • For production halls, gymnasiums, theatres and conference rooms as well as for large internal spaces in airports, railway stations and shopping centres
  • For mixed flow ventilation with different air patterns in heating and cooling modes
  • Horizontal swirling supply air discharge in cooling mode
  • The efficient swirl creates high induction levels, thereby rapidly reducing the temperature difference and airflow velocity
  • Air discharge from 0° (horizontal) to 90° (vertical)
  • For variable and constant volume flows
  • For supply air to room air temperature differences from –12 to +15 K
  • For room heights exceeding 3.8 m
  • With freely suspended installation, an extended border supports the horizontal air discharge in cooling mode

Special characteristics

  • With adjustable air control blades for high rooms
  • The air pattern can be adjusted manually or with an actuator
  • Horizontal or vertical duct connection

Nominal sizes

  • 425, 600, 775, 1050

Variants

  • Diffuser face only


Connection

  • H: Horizontal duct connection
  • V: Vertical duct connection

Parts and characteristics

  • Square diffuser face with four sections of blades
  • Diffuser face with blades that can be adjusted simultaneously, for air discharge from horizontal (0°) to vertical (90°)
  • Plenum box for horizontal or vertical duct connection

Accessories

  • Electric actuators for adjusting the air discharge direction
  • Extended border and protective cage

Useful additions

  • TDC temperature difference control module

Construction features

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

Materials and surfaces

  • Diffuser face made of extruded aluminium sections
  • Plenum box, cross bar and extended border made of galvanised sheet steel
  • Protective cage made of steel mesh
  • Diffuser face with anodised finish, E6-C-0, natural colour
  • Protective cage powder-coated RAL 9010, pure white
  • Extended border powder-coated RAL 9006, white aluminium
  • P1: Powder-coated, RAL CLASSIC colour

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
Skjematisk illustrasjon av VD, med plenumskammer for horisontal anslutning 00109671_0.

A VD-H
B VD-...-K
C VD-...-S
① Ventilfront
② Justerbare lameller
③ Plenumskammer
④ Opphengshull
⑤ Anslutning
Valgl
⑥ Kabelgjennomføring
⑦ Aktuator og overligger
⑧ Beskyttelsesgitter
⑨ Bred kant


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 VD ceiling swirl diffusers have adjustable air control blades. Different air patterns allow for cooling or heating mode, or for the adjustment to varying loads. Horizontal air discharge is omni directional. Vertical air discharge is possible in heating mode. The supply air to room air temperature difference may range from –12 to +15 K.

An actuator (optional) adjusts the blades based on demand.

Nominal sizes425, 600, 775, 1050 mm
Minimum volume flow rate95 – 675 l/s or 342 – 2430 m³/h
Maximum volume flow rate, with LWA ≅ 50 dB(A)280 – 1490 l/s or 1008 – 5364 m³/h
Supply air to room air temperature difference–12 to +15 K


Quick sizing – sound power level and total differential pressure

Nominal size V ΔptLWA
Nominal size l/s m³/h PadB(A)
425 95 342 621
425 150 540 1532
425 215 774 3142
425 280 1008 5250
600 210 756 928
600 310 1116 2037
600 410 1476 3544
600 510 1836 5450
775 375 1350 826
775 510 1836 1434
775 660 2376 2341
775 885 3186 4250
1050 675 2430 1336
1050 825 2970 1941
1050 975 3510 2746
1050 1120 4032 3550


Quick sizing – sound power level and total differential pressure

Nominal size V ΔptLWA
Nominal size l/s m³/h PadB(A)
425 95 342 617
425 175 630 1931
425 260 936 4141
425 340 1224 7050
600 210 756 719
600 355 1278 2132
600 410 1476 2836
600 660 2376 7550
775 375 1350 622
775 545 1962 1432
775 715 2574 2442
775 885 3186 3850
1050 675 2430 1130
1050 950 3420 2238
1050 1225 4410 3744
1050 1490 5364 5550


Ceiling swirl diffusers with square diffuser face for high rooms in comfort and industrial zones. For supply air only. Blades in diagonally opposed sections can be adjusted for air discharge from horizontal (0°) to vertical (90°). Horizontal air discharge with high induction. For freely suspended installation or for suspended ceilings of all types.

Ready-to-install component which consists of the diffuser face with four equal blade arrays, a cross bar for fixing the actuator, a plenum box with side entry or top entry spigot, and suspension holes.

The diffuser face is fixed to the plenum box with a screw.

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

  • With adjustable air control blades for high rooms
  • The air pattern can be adjusted manually or with an actuator
  • Horizontal or vertical duct connection

Materials and surfaces

  • Diffuser face made of extruded aluminium sections
  • Plenum box, cross bar and extended border made of galvanised sheet steel
  • Protective cage made of steel mesh
  • Diffuser face with anodised finish, E6-C-0, natural colour
  • Protective cage powder-coated RAL 9010, pure white
  • Extended border powder-coated RAL 9006, white aluminium
  • P1: Powder-coated, RAL CLASSIC colour

Technical data

  • Nominal sizes: 425, 600, 775, 1050 mm
  • Minimum volume flow rate: 95 – 675 l/s or 342 – 2430 m³/h
  • Maximum volume flow rate, with LWA ≅ 50 dB(A): 280 – 1490 l/s or 1008 – 5364 m³/h
  • Supply air to room air temperature difference: –12 to +15 K

00133907_0

 Type
VD       Virveldiffusor

 Anslutning
       Ingen oppføring: Kun ventilfront
H       Horisontal, med plenumskammer
V       Vertikal, med plenumskammer

 Regulering
       Ingen oppføring: manuell
       Elektrisk aktuator
E1       230 V AC, 3-punkt
E2       24 V AC/DC, 3-punkt
E3       24 V AC/DC, modulerende 2 – 10 V DC

 

 Tilbehør
       Kun for varianter med plenumskammer
       Leveres separat
K       Bred kant
S       Beskyttelsesgitter
          K og S kan ikke kombineres

 Nominell størrelse [mm]
425
600
775
1050

Eksponerte overflater på ventilfronten
          Ingen oppføring: eloksert, naturlig farge, 
          E6-C-0
P1       Pulverlakkert, spesifiser RAL CLASSIC farge

       Glans nivå
       RAL 9010 50 %
       RAL 9006 30 %
       Alle andre RAL farger 70 %

 

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For general question regarding products or services you can also call:
Tel.: +49 (0)2845 / 202-0 | Fax: +49 (0)2845/202-265