Type VDL

For high rooms, with adjustable air control blades

Circular 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 315, 400, 630, 800
  • Volume flow rate range 65 – 1080 l/s or 234 – 3888 m³/h
  • Diffuser face made of galvanised, powder-coated sheet steel and of aluminium
  • 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
  • Diffuser face with aerodynamically optimised contours
  • 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
  • Diffuser face can be removed from the room side

VDL 00132524_0
  • Application
  • Description

Application

  • Type VDL 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

  • For high rooms, with adjustable air control blades
  • Diffuser face with aerodynamically optimised contours
  • The air pattern can be adjusted manually or with an actuator
  • Horizontal or vertical duct connection

Nominal sizes

  • 315, 400, 630, 800

Variants

  • A: Diffuser face without flange
  • B: Diffuser face with flange


Connection

  • F: Diffuser face only
  • H: Horizontal duct connection, with plenum box
  • V: Vertical duct connection, with plenum box


Diffuser face

  • N: Non-removable diffuser face
  • D: Removable diffuser face, only in variant with plenum box

Parts and characteristics

  • Circular diffuser face
  • Removable or non-removable diffuser face
  • Radially arranged fixed or adjustable blades for air discharge from horizontal (0°) to vertical (90°)
  • Diffuser face with or without flange
  • Adjustment mechanism covered by decorative cap

Accessories

  • Lip seal
  • 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
  • Spigot with groove for lip seal (if accessory lip seal has been ordered)

Materials and surfaces

  • Blades, casing, duct collar, extended border, plenum box and cross bar made of galvanised sheet steel
  • Diffuser face and decorative cap made of aluminium
  • Protective cage made of steel mesh
  • Blades, duct collar, extended border, plenum box, diffuser face and decorative cap powder-coated RAL 9010, pure white
  • 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 VDL, med plenumskammer for horisontal anslutning 00109713_0.

① Ventilfront
② Pyntedeksel
③ Virveldiffusor med motsatte lameller (kun nominelle størrelser 630 og 800)
④ Plenumskammer
⑤ Opphengshull
⑥ Anslutning
Valg
⑦ Leppepakning
⑧ Aktuator og overligger


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 VDL 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 sizes315, 400, 630, 800 mm
Minimum volume flow rate65 – 320 l/s or 234 – 1152 m³/h
Maximum volume flow rate, with LWA ≅ 50 dB(A)170 – 1080 l/s or 612 – 3888 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)
315 65 234 922
315 100 360 2034
315 135 486 3743
315 170 612 5950
400 95 342 718
400 170 612 2232
400 250 900 4942
400 325 1170 8250
630 235 846 823
630 365 1314 2035
630 495 1782 3844
630 625 2250 6050
800 320 1152 824
800 470 1692 1835
800 620 2232 3143
800 765 2754 4750


Quick sizing – sound power level and total differential pressure

Nominal size V ΔptLWA
Nominal size l/s m³/h PadB(A)
315 65 234 619
315 115 414 1933
315 165 594 3943
315 215 774 6650
400 95 342 515
400 180 648 1931
400 265 954 4141
400 350 1260 7150
630 235 846 616
630 405 1458 1832
630 575 2070 3643
630 730 2628 5850
800 320 1152 720
800 500 1800 1733
800 680 2448 3243
800 865 3114 5250


Quick sizing – sound power level and total differential pressure

Nominal size V ΔptLWA
Nominal size l/s m³/h PadB(A)
315 65 234 716
315 115 414 2332
315 165 594 4843
315 210 756 7850
400 95 342 714
400 180 648 2632
400 265 954 5744
400 325 1170 8650
630 235 846 815
630 405 1458 2333
630 575 2070 4744
630 685 2466 6750
800 320 1152 719
800 500 1800 1732
800 930 3348 5850
800 920 3312 5750


Quick sizing – sound power level and total differential pressure

Nominal size V ΔptLWA
Nominal size l/s m³/h PadB(A)
315 65 234 617
315 115 414 1932
315 165 594 3941
315 225 810 7250
400 95 342 513
400 185 666 2030
400 275 990 4541
400 365 1314 7950
630 235 846 515
630 440 1584 1731
630 650 2700 4947
630 840 3024 6250
800 320 1152 422
800 570 2052 1435
800 820 2952 2843
800 1080 3888 4950


Ceiling swirl diffuser with circular diffuser face for high rooms in comfort and industrial zones. For supply air only. With fixed air control blades for horizontal supply air discharge and with adjustable blades for air discharge from horizontal (0°) to vertical (90°). Horizontal air discharge with high induction. For freely suspended installation and for suspended ceilings.

Ready-to-install component which consists of the diffuser face, blades, duct collar or plenum box with side entry or top entry spigot, and suspension holes. Removable or non-removable diffuser face.

The removable diffuser face is fixed to the cross bar with a central screw, covered 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

  • For high rooms, with adjustable air control blades
  • Diffuser face with aerodynamically optimised contours
  • The air pattern can be adjusted manually or with an actuator
  • Horizontal or vertical duct connection

Materials and surfaces

  • Blades, casing, duct collar, extended border, plenum box and cross bar made of galvanised sheet steel
  • Diffuser face and decorative cap made of aluminium
  • Protective cage made of steel mesh
  • Blades, duct collar, extended border, plenum box, diffuser face and decorative cap powder-coated RAL 9010, pure white
  • P1: Powder-coated, RAL CLASSIC colour

Technical data

  • Nominal sizes: 315, 400, 630, 800 mm
  • Minimum volume flow rate: 65 – 320 l/s or 234 – 1152 m³/h
  • Maximum volume flow rate, with LWA ≅ 50 dB(A): 170 – 1080 l/s or 612 – 3888 m³/h
  • Supply air to room air temperature difference: –12 to +15 K

00133909_0

 Type
VDL       Virveldiffusor

 Konstruksjonstype – ventilfront
A       Ventilfront uten flens
B       Ventilfront med flens

 Anslutning
F       Kun ventilfront
H       Horisontal, med plenumskammer
V       Vertikal, med plenumskammer

 Tilbehør 1
Ingen oppføring: ingen
L       Med leppepakning (kun for anslutning V og H)

 Ventilfront
          Kun i kombinasjon med anslutning H eller V
N       Ikke avtagbar
D       Avtagbar

 

 Tilbehør 2
          Bare i kombinasjon med ventilfront konstruksjonstype B, leveres separat
K       Bred kant
S       Beskyttelsesgitter

 Regulering
M       Manuell
X        Uten (faste lameller, kun horisontal utblåsning)
       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

 Nominell størrelse [mm]
315
400
630
800

 Eksponerte overflater på ventilfronten
          Ingen oppføring: pulverlakkert RAL 9010, hvit
P1       Pulverlakkert, spesifiser RAL CLASSIC farge

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

 

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