Type VSD15

With slim diffuser face

Slot diffusers with 15 mm diffuser face (nominal width) and adjustable air control elements

  • Nominal lengths from 600 to 1500 mm, 1 slot
  • Volume flow rate range from 7 to 30 (l/s)/m or 25 to 108 (m³/h)/m
  • Diffuser face made of extruded aluminium sections
  • For variable and constant volume flows
  • Suitable for continuous linear arrangement
  • High induction results in a rapid reduction of the temperature difference and airflow velocity
  • Individually adjustable air control elements to meet individual local requirements


Optional equipment and accessories

  • Exposed diffuser face available in RAL CLASSIC colours
  • Diffuser face with extended border
  • Damper blade for volume flow rate balancing, can be adjusted through the diffuser face
  • Plenum box with lining
  • End angle, end seal
  • White air control elements

VSD15-A 00134727_0


  • Application
  • Description

Application

  • Type VSD15 slot diffusers are used as supply air or extract air devices in comfort zones
  • Air discharge is one-way or alternating horizontal, or alternating angled; turbulent flow (mixed flow ventilation)
  • High induction results in a rapid reduction of the temperature difference and airflow velocity (supply air variant)
  • For variable and constant volume flows
  • For supply air to room air temperature differences from –10 to +10 K
  • For room heights up to 4 m (lower edge of suspended ceiling)
  • For suspended ceilings; suitable for restricted ceiling voids due to the low overall height of the plenum box
  • Ideal for suspended panelled ceilings with standard 16 mm gaps
  • Suitable for continuous linear arrangement

Special characteristics

  • Individually adjustable air control elements to meet individual local requirements
  • High induction results in a rapid reduction of the temperature difference and airflow velocity
  • Ideal for suspended panelled ceilings with standard 16 mm gaps
  • Suitable for continuous linear arrangement

Nominal sizes

  • LN: 600, 700, 800, 900, 1000, 1100, 1200, 1300, 1400, 1500 mm
  • Diffuser face available in intermediate sizes from 300 to 2000 mm, in increments of 1 mm

Variants

  • VSD15-F: Diffuser face only
  • VSD15-...: Diffuser face without extended border
  • VSD15-...-Z0: Diffuser face with extended border
  • VSD15-...: Black air control elements
  • VSD15-.../WW: White air control elements


Connection

  • A: Plenum box
  • D: Plenum box with lining

Parts and characteristics

  • Diffuser face with individually adjustable air control elements
  • Plenum box for horizontal duct connection
  • Connecting pins and alignment plates to connect and align slot diffusers for a continuous linear arrangement

Attachments

  • M: Damper blade for volume flow rate balancing
  • A9: End seal (only for diffuser face without extended border)
  • CA: End angle (only for diffuser face with extended border Z0)

Accessories

  • Lip seal

Useful additions

  • ED: Two end seals (only for diffuser face without extended border)
  • EW: Two end angles (only for diffuser face with extended border Z0)
  • To be ordered separately for continuous linear runs

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

  • Diffuser face made from extruded aluminium sections
  • Air control elements made of plastic, UL 94, V-0, flame retardant
  • Plenum box made of galvanised sheet steel
  • Lip seal made of rubber
  • Lining is mineral wool
  • Diffuser face without extended border is powder-coated RAL 9005, jet black
  • Diffuser face with extended border is anodised, E6-C-0, natural colour
  • P1: Powder-coated, RAL CLASSIC colour
  • Air control elements similar to RAL 9005, black
  • WW: Air control elements similar to RAL 9010, white


Mineral wool

  • To EN 13501, fire rating class A1, non-combustible
  • RAL quality mark RAL-GZ 388
  • Biosoluble and hence hygienically safe according to the German TRGS 905 (Technical Rules for Hazardous Substances) and EU directive 97/69/EC
  • Faced with glass fibre fabric as a protection against erosion through airflow velocities of up to 20 m/s
  • Inert to fungal and bacterial growth

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

Slot diffusers direct the air from air conditioning systems into the room, either horizontally or at an angle. 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. 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 VSD15 slot diffusers have adjustable air control elements. The air pattern can be adjusted to meet different local requirements. Air discharge is one-way or alternating horizontal. Heating mode with angled air discharge is also possible. The supply air to room air temperature difference may range from –10 to +10 K.

A damper blade (optional) simplifies volume flow rate balancing for commissioning.

To give rooms an aesthetic, uniform look, Type VSD15 diffusers may also be used for extract air.

Nominal length

600, 700, 800, 900, 1000, 1100, 1200, 1300, 1400, 1500 mm

Number of slots

1

Minimum volume flow rate

7 (l/s)/m or 25 (m³/h)/m

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

30 (l/s)/m or 108 (m³/h)/m

Supply air to room air temperature difference

–10 to +10 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.

VSD15, supply air, alternating horizontal air discharge, sound power level and total differential pressure

Nominal length V Damper blade position
Nominal length V 45° 90°
Nominal length V Δpt LWA Δpt LWA Δpt LWA
Nominal length l/s m³/h Pa dB(A) Pa dB(A) Pa dB(A)

600

5

18

5

15

6

<15

10

<15

600

10

36

20

34

24

32

39

32

600

15

54

45

45

55

43

88

43

600

20

72

80

53

98

50

157

50

700

5

18

4

<15

5

<15

9

<15

700

10

36

16

30

20

28

35

29

700

15

54

35

41

45

39

78

39

700

20

72

62

49

80

47

139

47

800

6

22

5

<15

6

<15

11

<15

800

15

54

29

38

39

36

72

37

800

20

72

51

46

69

44

128

45

800

25

90

80

52

108

50

200

50

900

7

25

5

15

7

<15

15

<15

900

15

54

24

35

34

34

68

35

900

20

72

43

43

61

42

120

42

900

25

90

67

49

95

48

188

48

1000

7

25

5

<15

7

<15

14

<15

1000

10

36

9

22

14

21

29

22

1000

20

72

37

41

55

39

115

40

1000

30

108

84

51

125

50

258

51

1100

8

29

5

<15

8

<15

18

<15

1100

10

36

8

20

13

19

28

20

1100

20

72

33

39

51

37

110

38

1100

30

108

75

49

115

48

248

49

1200

9

32

6

15

10

<15

22

15

1200

15

54

17

29

27

28

60

29

1200

25

90

47

43

75

42

167

43

1200

35

126

92

52

147

51

328

52

1300

9

32

6

<15

9

<15

21

<15

1300

15

54

16

27

26

26

59

28

1300

25

90

43

41

71

40

164

41

1300

35

126

85

50

140

49

321

50

1400

10

36

6

15

11

<15

26

15

1400

20

72

26

33

44

33

103

34

1400

30

108

58

44

98

43

231

45

1400

40

144

103

52

175

51

411

52

1500

10

36

6

<15

10

<15

25

<15

1500

20

72

24

32

42

31

101

33

1500

30

108

54

43

95

42

228

43

1500

40

144

97

50

168

50

405

51


Slot diffusers with individually manually adjustable air control elements and an aesthetically shaped face section with one slot, for one-way horizontal, alternating horizontal or alternating angled air discharge. For supply air or extract air. For installation into suspended ceilings, particularly into panelled ceilings with standard 16 mm gaps.

Ready-to-install component which consists of the diffuser face with individually adjustable black or white air control elements, and of a plenum box with side entry spigot and suspension lugs.

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

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

Special characteristics

  • Individually adjustable air control elements to meet individual local requirements
  • High induction results in a rapid reduction of the temperature difference and airflow velocity
  • Ideal for suspended panelled ceilings with standard 16 mm gaps
  • Suitable for continuous linear arrangement

Materials and surfaces

  • Diffuser face made from extruded aluminium sections
  • Air control elements made of plastic, UL 94, V-0, flame retardant
  • Plenum box made of galvanised sheet steel
  • Lip seal made of rubber
  • Lining is mineral wool
  • Diffuser face without extended border is powder-coated RAL 9005, jet black
  • Diffuser face with extended border is anodised, E6-C-0, natural colour
  • P1: Powder-coated, RAL CLASSIC colour
  • Air control elements similar to RAL 9005, black
  • WW: Air control elements similar to RAL 9010, white


Mineral wool

  • To EN 13501, fire rating class A1, non-combustible
  • RAL quality mark RAL-GZ 388
  • Biosoluble and hence hygienically safe according to the German TRGS 905 (Technical Rules for Hazardous Substances) and EU directive 97/69/EC
  • Faced with glass fibre fabric as a protection against erosion through airflow velocities of up to 20 m/s
  • Inert to fungal and bacterial growth

Technical data

  • Nominal length: 600 – 1500 mm
  • Number of slots: 1
  • Minimum volume flow rate: 7 (l/s)/m or 25 (m³/h)/m
  • Maximum volume flow rate, with LWA ≅ 50 dB(A): 30 (l/s)/m or 108 (m³/h)/m
  • Supply air to room air temperature difference: –10 to +10 K

Sizing data

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

Air-regenerated noise

  • LWA _______________________ [dB(A)]

This specification text describes the general properties of the product. Texts for variants can be generated with our Easy Product Finder design programme.

Order example: VSD15-A-M/900/A9/P1-RAL9010/WS/WW

Connection

Plenum box

Damper blade for volume flow rate balancing

With

Extended border

Without

Accessories

Without

Nominal size

900 mm

End pieces

End seals on both ends

Exposed surface

RAL 9010, pure white, gloss level 50 %

Air pattern

Alternating angled

Colour of air control elements

White


 

Variants, Attachments, Dimensions and weight, Product details

  • Variants
  • Attachments
  • Dimensions and weight
  • Product details

VSD15-A

Variant

  • Slot diffuser with plenum box

Parts and characteristics

  • Plenum box for horizontal duct connection
  • Damper blade (optional)
  • Lip seal (optional)

VSD15-D

Variant

  • Slot diffuser with plenum box
  • Plenum box with lining

Parts and characteristics

  • Plenum box for horizontal duct connection
  • Thermal and acoustic insulation (lining)
  • Damper blade (optional)
  • Lip seal (optional)

VSD15

Nominal length
mm
LN
L1
mm
600 600
700 700
800 800
900 900
1000 1000
1100 1100
1200 1200
1300 1300
1400 1400
1500 1500


VSD15

Nominal length
mm
LN
VSD15-A
m
kg
VSD15-D
m
kg
L1
mm
L3
mm
600 1.8 2.6 600 595
700 2.2 3.0 700 695
800 2.5 3.4 800 795
900 2.8 3.8 900 895
1000 3.1 4.3 1000 995
1100 3.4 4.7 1100 1095
1200 3.7 5.1 1200 1195
1300 4.0 5.6 1300 1295
1400 4.3 6.0 1400 1395
1500 4.6 6.4 1500 1495


Profiles

VSD15

Nominal length
mm
LN
Aeff

Aeff WS

600 0.0021 0.0021
700 0.0025 0.0025
800 0.0028 0.0028
900 0.0032 0.0032
1000 0.0035 0.0035
1100 0.0039 0.0039
1200 0.0042 0.0042
1300 0.0046 0.0046
1400 0.0049 0.0049
1500 0.0053 0.0053

Aeff: One-way horizontal and alternating horizontal air dischargeAeff WS: Alternating angled air discharge


Installation examples, Installation details, Commissioning, Basic information and nomenclature

  • Installation examples
  • Installation details
  • Commissioning
  • Basic information and nomenclature
VSD15-...-Z0/.../P1-RAL 9010, installation in continuous ceilings 00129986_0

Powder-coated RAL 9010, pure white

Installation and commissioning

  • Preferably for rooms with a clear height up to 4.0 m
  • Flush ceiling installation
  • Horizontal duct connection
  • Diffusers with a shorter plenum box as well as non-active diffusers require a rear blanking plate; length of blanking plate = L1 – L3
  • For a continuous linear arrangement connect the diffusers with connecting pins and alignment plates
  • If necessary, carry out volume flow rate balancing with the damper blade


These are only schematic diagrams to illustrate installation details.

Volume flow rate balancing 00134438_0

  • Move the air control element near the spigot in such a way that it is possible to insert a screw driver


Volume flow rate balancing

When several diffusers are connected to just one volume flow controller, it may be necessary to balance the volume flow rates.

  • Slot diffusers with plenum box and damper blade (variant -M): The damper blade can be adjusted even after the diffuser face has been installed.

Principal dimensions

ØD [mm]

Outer diameter of the spigot

L₁ [mm]

Length of diffuser without end pieces

L₃ [mm]

Length of plenum box

P [mm]

Width of diffuser face – with extended border, if any

B₃ [mm]

Width of plenum box

H₃ [mm]

Height of slot diffuser with plenum box, from the lower edge of the suspended ceiling to the upper edge of the plenum box

Y [mm]

Neck extension – The neck length results from a fixed length plus the neck extension

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

fm [Hz]

Octave band centre frequency

LWA [dB(A)]

Sound power level of the air-regenerated noise

V [m³/h] and [l/s]

Volume flow rate

Δpt [Pa]

Total differential pressure


All sound power levels are based on 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