Type VDR

For large temperature differences in heating mode, high penetration of air, with adjustable air control blades

Circular ceiling diffusers, with manual or motorised adjustment of the air discharge direction, particularly suitable for high rooms

  • Nominal sizes 315, 400, 630, 800
  • Volume flow rate range 175 – 1495 l/s or 630 – 5382 m³/h
  • Diffuser face made of aluminium
  • For supply air
  • For variable and constant volume flows
  • Discharge direction can be adjusted manually or with an actuator
  • High penetration of air at low sound power level


Optional equipment and accessories

  • Exposed diffuser face available in RAL CLASSIC colours
  • Horizontal or vertical duct connection
  • Actuators for adjusting the air discharge direction

VDR 00131770_0


  • Application
  • Description

Application

  • Type VDR ceiling diffusers are used as supply air diffusers for high rooms in comfort and industrial zones
  • For mixed flow ventilation with different air patterns in heating and cooling modes
  • Horizontal two-way supply air discharge in cooling mode
  • High induction results in a rapid reduction of 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 –10 to +15 K
  • For room heights exceeding 3.8 m
  • For suspended ceilings
  • Freely suspended installation
  • Ideal for use with TDC temperature difference control module

Special characteristics

  • High penetration of air at low sound power level
  • Particularly suitable for rooms with varying heat loads
  • Ideal adaptation of the air discharge pattern due to two sections of adjustable blades
  • Discharge direction can be adjusted manually or with an actuator
  • Plenum box with side entry or top entry spigot, and variant with electric actuator and inspection access

Nominal sizes

  • 315, 400, 630, 800

Variants

  • Diffuser face only


Connection

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

Parts and characteristics

  • Circular diffuser face with two sections of adjustable blades
  • Diffuser front frame
  • Spigot ring

Attachments

  • Electric actuators for adjusting the air discharge direction

Useful additions

  • TDC temperature difference control module

Construction features

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

Materials and surfaces

  • Blades, front frame and spigot ring made of aluminium
  • Plenum box and cross bar made of galvanised sheet steel
  • Front frame, blades and spigot ring 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

Teknisk information

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

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

Functional description

Ceiling diffusers direct the air from air conditioning systems 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. Ceiling diffusers allow for large volume flow rates. The result is a mixed flow ventilation for industrial and comfort zones, with good overall room ventilation, creating only very little turbulence in the occupied zone.

Type VDR ceiling diffusers have adjustable blades. The air pattern can be adjusted to meet different local requirements. 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 –10 to +15 K.

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

Nominal sizes

315, 400, 630, 800 mm

Minimum volume flow rate

175 – 695 l/s or 630 – 2502 m³/h

Maximum volume flow rate, with LWA ≅ 50 dB(A)

320 – 1495 l/s or 1152 – 5382 m³/h

Supply air to room air temperature difference

–10 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).

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

VDR, sound power level and total differential pressure

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

315

175

630

5

19

315

255

918

10

32

315

335

1206

17

42

315

420

1512

27

50

400

250

900

5

18

400

400

1440

14

32

400

550

1980

26

44

400

650

2340

36

50

630

555

1998

7

30

630

680

2448

11

38

630

805

2898

15

45

630

925

3330

20

50

800

556

2500

6

27

800

870

3132

8

33

800

1185

4266

16

42

800

1495

5382

25

50


VDR-H, sound power level and total differential pressure

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

315

175

630

22

28

315

230

828

38

37

315

280

1008

57

45

315

320

1152

74

50

400

250

900

19

27

400

320

1152

31

36

400

390

1404

46

43

400

465

1674

65

50

630

490

1764

24

28

630

615

2214

38

36

630

740

2664

55

44

630

870

3132

75

50

800

695

2502

21

30

800

855

3078

31

37

800

1015

3654

44

44

800

1180

4248

59

50


VDR-V, sound power level and total differential pressure

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

315

175

630

10

29

315

230

828

18

38

315

280

1008

27

45

315

320

1152

35

50

400

250

900

9

30

400

330

1188

16

38

400

405

1458

24

45

400

480

1728

33

50

630

490

1764

18

27

630

650

2340

32

36

630

810

2916

49

44

630

970

3492

71

50

800

695

2502

15

28

800

940

3384

27

36

800

1190

4284

43

44

800

1450

5220

64

50


Ceiling diffusers with circular diffuser front frame, for comfort and industrial zones. For supply air only. Diffuser face with adjustable air control blades for air discharge from horizontal (0°) to vertical (90°) For freely suspended installation and for suspended ceilings.

Ready-to-install component which consists of the diffuser face with diffuser front frame and adjustable air control blades, a plenum box with equalising element, side entry or top entry spigot, and suspension holes or suspension lugs.

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

  • High penetration of air at low sound power level
  • Particularly suitable for rooms with varying heat loads
  • Ideal adaptation of the air discharge pattern due to two sections of adjustable blades
  • Discharge direction can be adjusted manually or with an actuator
  • Plenum box with side entry or top entry spigot, and variant with electric actuator and inspection access

Materials and surfaces

  • Blades, front frame and spigot ring made of aluminium
  • Plenum box and cross bar made of galvanised sheet steel
  • Front frame, blades and spigot ring 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: 175 – 695 l/s or 630 – 2502 m³/h
  • Maximum volume flow rate, with LWA ≅ 50 dB(A): 320 – 1495 l/s or 1152 – 5382 m³/h
  • Supply air to room air temperature difference: –10 to +15 K

Sizing data

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

Air-regenerated noise

  • LWA _______________________ [dB(A)]

00133926_0

 Type
VDR       Ceiling 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

 

 Nominal size [mm]
315
400
630
800

 Exposed surface of diffuser face
       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 %

Order example: VDR-H-E2/800

Connection

Horizontal

Adjustment

Actuator 24 V AC

Nominal size

800

Exposed surface of diffuser face

RAL 9010, pure white, gloss level 50 %


 

Variants, Dimensions and weight, Product details

  • Variants
  • Dimensions and weight
  • Product details

VDR

Designed for high comfort

Together with renowned designers and architects we have developed ceiling, wall, staircase and floor diffusers and grilles that are not only aesthetic design elements, but also meet demanding ventilation and acoustic requirements.

Variant

  • Ceiling diffuser with circular diffuser face
  • Manual adjustment

Nominal sizes

  • 315, 400, 630, 800

Parts and characteristics

  • Top entry spigot

Construction features

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

VDR-E*

Designed for high comfort

Together with renowned designers and architects we have developed ceiling, wall, staircase and floor diffusers and grilles that are not only aesthetic design elements, but also meet demanding ventilation and acoustic requirements.

Variant

  • Ceiling diffuser with circular diffuser face
  • Actuator for blade adjustment

Nominal sizes

  • 315, 400, 630, 800

Parts and characteristics

  • Top entry spigot

Construction features

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

VDR-H

Designed for high comfort

Together with renowned designers and architects we have developed ceiling, wall, staircase and floor diffusers and grilles that are not only aesthetic design elements, but also meet demanding ventilation and acoustic requirements.

Variant

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

Nominal sizes

  • 315, 400, 630, 800

Parts and characteristics

  • Plenum box for horizontal duct connection
  • Actuator for blade adjustment, optional
  • Variant with actuator has an inspection access at the side

Construction features

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

VDR-V

Designed for high comfort

Together with renowned designers and architects we have developed ceiling, wall, staircase and floor diffusers and grilles that are not only aesthetic design elements, but also meet demanding ventilation and acoustic requirements.

Variant

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

Nominal sizes

  • 315, 400, 630, 800

Parts and characteristics

  • Plenum box for vertical duct connection
  • Actuator for blade adjustment, optional
  • Variant with actuator has an inspection access

Construction features

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

VDR

Nominal size
ØD
mm
ØD1
mm
H1
mm
H2
mm
m
kg
315 313 450 122 77 3
400 398 570 139 84 5
630 628 870 184 114 11
800 798 1070 220 135 15


VDR-E*

Nominal size
ØD
mm
ØD1
mm
H1
mm
H2
mm
m
kg
315 313 450 122 158 5
400 398 570 139 166 7
630 628 870 184 196 13
800 798 1070 220 218 18


VDR-H

Nominal size
ØD
mm
ØD1
mm
H1
mm
H3
mm
□Q3
mm
C
mm
A
mm
m
kg
315 248 450 122 448 415 45 292 12
400 313 570 139 528 500 45 339 16
630 398 870 184 623 750 45 392 31
800 498 1070 220 745 920 45 464 43

Weights apply to the variant with actuator


VDR-V

Nominal size
ØD
mm
ØD1
mm
H1
mm
Aeff

H3
mm
ØD3
mm
C
mm
m
kg
315 248 450 122 0.0885 305 314 45 8
400 313 570 139 0.1260 411 399 45 12
630 398 870 184 0.2450 486 629 45 22
800 498 1070 220 0.3480 570 799 45 32

Weights apply to the variant with actuator


Diffuser face VDR 00151936_0


VDR

Nominal size
ØD1
mm
Aeff

315 450 0.0885
400 570 0.1260
630 870 0.2450
800 1070 0.3480


Installation examples, Installation details, Basic information and nomenclature

  • Installation examples
  • Installation details
  • Basic information and nomenclature
VDR heating mode 00144335_0


Installation and commissioning

  • Preferably for rooms with a clear height from 3.8 m
  • Freely suspended and flush ceiling installation
  • Horizontal or vertical duct connection

Installation information

  • Installation with spigot ring can be flush with the ceiling or freely suspended
  • Continuous adjustment of the air pattern using an actuator is possible with flush or freely suspended installation
  • Installation and making connections to be performed by others

These are only schematic diagrams to illustrate installation details.

Ceiling cut-out

Nominal size
Ød
mm
315 398
400 518
630 808
800 1008


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

Nomenclature

LWA [dB(A)]

A-weighted sound power level of air-regenerated noise

V [m³/h] and [l/s]

Volume flow rate

Δtz [K]

Supply air to room air temperature difference, i.e. supply air temperature minus room temperature

Δpt [Pa]

Total differential pressure

Aeff [m²]

Effective air discharge area


All sound power levels are based on 1 pW.

Nedladdningar

  • produkt information

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