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
  • Diffuser 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
  • Angled or vertical air discharge in heating mode
  • 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, Technical data, Quick sizing, Specification text, Order code

  • Function
  • Technical data
  • Quick sizing
  • Specification text
  • Order code

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 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


Quick sizing tables provide a good overview of the volume flow rates and corresponding sound power levels and differential pressures.

The maximum volume flow rates apply to a sound power level of approx. 50 dB (A) with damper blade position 0°.

Exact values for all parameters can be determined with our Easy Product Finder design programme.

VD-H, sound power level and total differential pressure

Nominal size V Δpt LWA
Nominal size l/s m³/h Pa dB(A)

425

95

342

6

21

425

150

540

15

32

425

215

774

31

42

425

280

1008

52

50

600

210

756

9

28

600

310

1116

20

37

600

410

1476

35

44

600

510

1836

54

50

775

375

1350

8

26

775

510

1836

14

34

775

660

2376

23

41

775

885

3186

42

50

1050

675

2430

13

36

1050

825

2970

19

41

1050

975

3510

27

46

1050

1120

4032

35

50


VD-V, sound power level and total differential pressure

Nominal size V Δpt LWA
Nominal size l/s m³/h Pa dB(A)

425

95

342

6

17

425

175

630

19

31

425

260

936

41

41

425

340

1224

70

50

600

210

756

7

19

600

355

1278

21

32

600

410

1476

28

36

600

660

2376

75

50

775

375

1350

6

22

775

545

1962

14

32

775

715

2574

24

42

775

885

3186

38

50

1050

675

2430

11

30

1050

950

3420

22

38

1050

1225

4410

37

44

1050

1490

5364

55

50


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

Sizing data

  • V _______________________ [m³/h]
  • Δpt _______________________ [Pa]

Air-regenerated noise

  • LWA _______________________ [dB(A)]

00133907_0

 Type
VD       Swirl diffuser

 Connection
       No entry: diffuser face only
H       Horizontal, with plenum box
V       Vertical, with plenum box

 Adjustment
       No entry: manual
       Electric actuator
E1       230 V AC, 3-point
E2       24 V AC/DC, 3-point
E3       24 V AC/DC, modulating 2 – 10 V DC

 

 Accessories
       Only for connections H and V
       supplied separately
K       Extended border
S       Protective cage
       K and S cannot be combined

 Nominal size [mm]
425
600
775
1050

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

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

Order example: VD–V–E1–K/600/P1-RAL 9016

Connection

Vertical

Adjustment

Electric actuator 230 V AC

Attachment

Extended border

Nominal size

600 mm

Exposed surface of diffuser face

RAL 9016, traffic white, gloss level 70 %


 

Variants, Accessories, Dimensions and weight, Product details

  • Variants
  • Accessories
  • Dimensions and weight
  • Product details

VD-H

Variant

  • Ceiling swirl diffuser with square diffuser face
  • With plenum box for horizontal duct connection

Nominal sizes

  • 425, 600, 775, 1050

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 duct connection

Construction features

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

VD-V

Variant

  • Ceiling swirl diffuser with square diffuser face
  • With plenum box for vertical duct connection

Nominal sizes

  • 425, 600, 775, 1050

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 vertical duct connection

Construction features

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

VD-*-K

Accessories

  • Extended border

Nominal sizes

  • 425, 600, 775, 1050

Parts and characteristics

  • An extended border supports the horizontal air discharge in cooling mode

VD-*-S

Accessories

  • Protective cage

Nominal sizes

  • 425, 600, 775, 1050

Parts and characteristics

  • A protective cage protects the blades, e.g. in gymnasiums



VD-H

Nominal size
□Q1
mm
□Q3
mm
H3
mm
ØD
mm
A
mm
C
mm
m
kg
425 425 425 500 248 335 46 11
600 595 600 550 313 353 48 19
775 763 775 750 448 498 60 34
1050 1043 1050 800 498 523 60 57

Weights apply to the variant with actuator


VD-V

Nominal size
□Q1
mm
□Q3
mm
H3
mm
ØD
mm
C
mm
m
kg
425 425 425 500 248 46 11
600 595 600 550 313 48 19
775 763 775 550 448 60 29
1050 1043 1050 600 498 60 51

Weights apply to the variant with actuator


Diffuser face VD 00143583_0


VD

Nominal size
□Q1
mm
Aeff

Aeff vertical air discharge

425 425 0.0307 0.0781
600 595 0.0685 0.1819
775 763 0.1242 0.3405
1050 1043 0.2247 0.6358


Installation examples, Installation details, Basic information and nomenclature

  • Installation examples
  • Installation details
  • Basic information and nomenclature
Freely suspended installation 00144318_0


Installation and commissioning

  • Preferably for rooms with a clear height from 3.8 m
  • Flush ceiling installation
  • VD-...-K: Also freely suspended installation
  • VD-V: Ceiling distance of at least 300 mm allows for continuous adjustment of the air pattern
  • Horizontal or vertical duct connection

Installation information

  • Installation can be flush with the ceiling or freely suspended
  • If the VD is mounted flush with an open cell ceiling, the resulting air pattern is the same as with freely suspended installation
  • Continuous adjustment of the air pattern using an actuator is only possible with freely suspended installation, installation flush with an open cell ceiling, or installation with the diffuser protruding from an open cell ceiling
  • Installation and making connections to be performed by others

These are only schematic diagrams to illustrate installation details.

Principal dimensions

ØD [mm]

Outer diameter of the spigot

ØD₁ [mm]

Outer diameter of a circular diffuser face

ØD₂ [mm]

Diameter of a circular diffuser face style

ØD₃ [mm]

Diameter of a circular plenum box

□Q₁ [mm]

Outer diameter of a square diffuser face

□Q₂ [mm]

Dimensions of a square diffuser face style

□Q₃ [mm]

Dimensions of a square plenum box

H₁ [mm]

Distance (height) from the lower edge of the suspended ceiling to the lower edge of the diffuser face

H₂ [mm]

Height of a ceiling diffuser, from the lower edge of the suspended ceiling to the upper edge of the spigot

H₃ [mm]

Height of a ceiling diffuser with plenum box, from the lower edge of the suspended ceiling to the upper edge of the plenum box or of the spigot

A [mm]

Position of the spigot, defined by the distance of the spigot centre line to the lower edge of the suspended ceiling

C [mm]

Length of the spigot

m [kg]

Weight

Definitionen

LWA [dB(A)]

Schallleistungspegel des Strömungsgeräusches, A-bewertet

V [m³/h] und [l/s]

Volumenstrom

Δtz [K]

Zulufttemperaturdifferenz, Zulufttemperatur minus Raumtemperatur

Δpt [Pa]

Gesamtdruckdifferenz


Alle Schallleistungspegel basieren auf 1 pW.

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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