Type VSD50-1-LT

For the space saving installation into lightweight partition walls with a metal support structure

Slot diffusers with 50 mm diffuser face (nominal width) and adjustable air control elements

  • Nominal length: 550, 1175 mm, 1 slot
  • Volume flow rate range 10 – 70 l/s or 36 – 252 m³/h
  • Diffuser face made of extruded aluminium sections
  • For variable and constant volume flows
  • Installation into lightweight partition walls with a 50 mm wide metal support structure and a wall thickness of 100 mm
  • Diffuser face with spring clip fixing
  • 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
  • Damper blade for volume flow rate balancing, can be adjusted through the diffuser face

VSD50-1-LT-AZ-M-L/1175 00142859_0


  • Application
  • Description

Application

  • Type VSD50-1-LT slot diffusers are used as supply air or extract air devices or as supply and extract air combinations in comfort zones
  • Angled one-way air discharge for 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 the space saving installation into lightweight partition walls with a 50 mm wide metal support structure and a wall thickness of 100 mm

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
  • Diffuser face has been optimised for maximum volume flow rate at low sound power levels
  • Internal acoustic lining that reduces room-to-room cross talk through the ductwork
  • Diffuser face with spring clip fixing that allows for easy installation of the diffuser face after drywalling is complete

Nominal sizes

  • LN: 550, 1175 mm

Variants

  • VSD50 -1-LT: Slot diffuser for supply air or extract air
  • VSD50 -1-LT-AZ: Slot diffuser as a supply and extract air combination (only LN 1175 mm)
  • VSD50 -1-LT-.../WW: White air control elements

Parts and characteristics

  • Diffuser face with individually adjustable air control elements
  • Plenum box for horizontal duct connection
  • Internal acoustic lining to increase transmission loss
  • Spring clip fixing

Attachments

  • Damper blade for volume flow rate balancing

Accessories

  • Lip seal

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
  • End angle made of aluminium
  • Lip seal made of rubber
  • Acoustic lining of the cross-talk attenuator is mineral wool
  • Diffuser face with anodised finish, 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 VSD50-1-LT slot diffusers have adjustable air control elements. The air pattern can be adjusted to meet different local requirements. 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 VSD50-1-LT diffusers may also be used for extract air or as a supply and extract air combination.

Nominal length

550, 1175 mm

Number of slots

1

Minimum volume flow rate

10, 25 l/s or 36, 90 m³/h

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

35, 70 l/s or 126, 252 m³/h

Supply air to room air temperature difference

–10 to +10 K


Transmission loss

Variant Centre frequency fm [Hz]
Variant 125 250 500 1000 2000
Variant Dt
Variant dB

VSD50-1-LT/550

16

14

15

18

22

VSD50-1-LT/1175

13

12

11

17

20

VSD50-1-LT-AZ/1175

15

13

13

17

20


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°.

VSD50-1-LT, supply air, 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)

550

10

36

7

<15

11

<15

29

<15

550

15

54

17

18

24

23

64

22

550

25

90

46

34

66

38

179

40

550

35

126

90

45

130

47

350

51

1175

25

90

18

19

26

24

63

26

1175

45

162

60

36

86

40

204

42

1175

55

198

89

43

128

45

305

47

1175

70

252

145

50

207

52

494

54


VSD50-1-LT, extract air, 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)

550

10

36

7

<15

9

<15

33

18

550

15

54

16

15

21

18

74

31

550

25

90

43

37

59

39

205

47

550

35

126

85

51

116

53

401

58

1175

25

90

18

17

26

20

62

26

1175

45

162

59

34

85

38

199

42

1175

55

198

89

40

126

44

298

48

1175

70

252

144

47

204

51

483

54


VSD50-1-LT-AZ, supply and extract air combination, sound power level and total differential pressure

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

1175

10

36

7

6

<15

12

10

15

30

33

17

1175

15

54

15

13

20

26

23

26

68

75

29

1175

25

90

43

35

36

72

64

40

188

208

45

1175

40

144

110

90

50

186

163

53

482

532

61


Slot diffusers with individually manually adjustable air control elements and an aesthetically shaped face section with one wide slot, for angled air discharge. For supply air, extract air or as a supply and extract air combination. For installation in lightweight partition walls with metal support structure.

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 acoustic lining to reduce room-to-room cross talk.

Diffuser face with spring clip fixing to the plenum box.

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
  • Diffuser face has been optimised for maximum volume flow rate at low sound power levels
  • Internal acoustic lining that reduces room-to-room cross talk through the ductwork
  • Diffuser face with spring clip fixing that allows for easy installation of the diffuser face after drywalling is complete

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
  • End angle made of aluminium
  • Lip seal made of rubber
  • Acoustic lining of the cross-talk attenuator is mineral wool
  • Diffuser face with anodised finish, 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 550, 1175 mm
  • Number of slots: 1
  • Minimum volume flow rate: 10, 25 l/s or 36, 90 m³/h
  • Maximum volume flow rate, with LWA ≅ 50 dB(A): 35, 70 l/s or 126, 252 m³/h
  • 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.

00135405_0

 Type
VSD50-1-LT       Slot diffuser for lightweight partition walls

 Construction
       No entry: supply or extract air
AZ       Supply and extract air combination (only nominal size 1175 mm)

 Damper blade for volume flow rate balancing
       No entry: none
M       With

 Accessories
       No entry: none
L       With lip seal

 

 Nominal size [mm]
       Nominal length LN
550
1175

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

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

 Colour of air control elements
       No entry: similar to RAL 9005, black
WW       Similar to RAL 9010, white

Order example: VSD50-1-LT-AZ-M-L/1175/P1-RAL 9010/WW

Construction

Supply and extract air combination

Damper blade for volume flow rate balancing

With

Accessories

Lip seal

Nominal size

1175 mm

Exposed surface

RAL 9010, pure white, gloss level 50 %

Colour of air control elements

White


 

Variants, Dimensions and weight, Product details

  • Variants
  • Dimensions and weight
  • Product details

VSD50-1-LT

Nominal length
mm
LN
L1
mm
L3
mm
L4
mm
ØD
mm
A
mm
m
kg
550 530 550 586 78 227 6.1
1175 1155 1175 1211 98 227 12.3


VSD50-1-LT-AZ

Nominal length
mm
LN
L1
mm
L3
mm
L4
mm
ØD
mm
A
mm
E
mm
m
kg
1175 1155 1175 1211 78 227 620 13.6


VSD50-1-LT 00155772_0


Profiles

VSD50-1-LT

Nominal length
mm
LN
Aeff

550 0.0055
1175 0.0118

Aeff: One-way angled air discharge (supply air)


Installation details, Commissioning, Basic information and nomenclature

  • Installation details
  • Commissioning
  • Basic information and nomenclature

Installation and commissioning

  • Preferably for rooms with a clear height up to 4.0 m
  • Wall installation below the ceiling
  • Installation together with drywalling
  • Installation lengths correspond to the usual distances between the metal studs of stud walls
  • Horizontal duct connection
  • If necessary, carry out volume flow rate balancing with the damper blade


These are only schematic diagrams to illustrate installation details.

Installation opening

Nominal length
mm
LN
l
mm
h
mm
550 560 58
1175 1185 58


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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Contact

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