Type  VSD50

With wide diffuser face for larger volume flow rates

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

  • Nominal length from 600 to 1950 mm, 1 or 2 slots
  • Volume flow rate range 20 – 120 (l/s)/m or 72 – 432 (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
  • Concealed screw fixing that simplifies installation of the diffuser after the ceiling has been completed
  • Symmetric and asymmetric plenum boxes, with or without lining
  • End plates, end angles, corner sections

VSD50-1-AK 00134738_0


  • Application
  • Description

Application

  • Type VSD50 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
  • 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
  • Diffuser face has been optimised for maximum volume flow rate at low sound power levels
  • Suitable for continuous linear arrangement

Nominal sizes

  • LN: 600, 750, 900, 1050, 1200, 1350, 1500, 1650, 1800, 1950 mm
  • Diffuser face available in intermediate sizes from 300 to 2550 mm, in increments of 1 mm

Variants

  • VSD50-*: 1 or 2 slots
  • VSD50-*-F: Diffuser face only
  • VSD50-*-E: Corner section
  • VSD50-...: Diffuser face without extended border
  • VSD50-.../B00: Diffuser face with extended border
  • VSD50-...: Black air control elements
  • VSD50-.../WW: White air control elements


Plenum box and diffuser face fixing

  • AK: Plenum box and clamp fixing
  • DK: Plenum box with lining and clamp fixing
  • AS: Plenum box and concealed screw fixing
  • DS: Plenum box with lining and concealed screw fixing
  • AA: Asymmetric plenum box and clamp fixing

Parts and characteristics

  • Diffuser face with individually adjustable air control elements
  • Plenum box for horizontal duct connection
  • Concealed screw fixing (facilitates installation of the diffuser face) or clamp fixing
  • 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
  • C1, C2: Two end plates
  • C5, C6: Two end angles

Accessories

  • Lip seal

Useful additions

  • EP: Two end plates
  • EW: Two end angles
  • 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
  • End plate and end angle made of aluminium
  • Lip seal made of rubber
  • Lining 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/EG
  • 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
  • Technology
  • Quick sizing
  • Specification text
  • Order code
Schematic illustration of the VSD50 with clamp fixing 00129727_0
① Diffuser face
② Adjustable air control element
③ Neck
④ Plenum box
⑤ Suspension lug
⑥ Spigot
Optional
⑦ Lip seal
⑧ Damper blade for volume flow rate balancing
⑨ Clamp fixing


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 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 VSD50 diffusers may also be used for extract air.

Nominal length 600, 750, 900, 1050, 1200, 1350, 1500, 1650, 1800, 1950 mm
Number of slots 1, 2
Neck extension 0, 25, 50, 75, 100, 125 mm
Minimum volume flow rate 20 – 40 (l/s)/m or 72 – 144 (m³/h)/m
Maximum volume flow rate, with LWA ≅ 50 dB(A) 70 – 120 (l/s)/m or 252 – 432 (m³/h)/m
Supply air to room air temperature difference –10 to +10 K

Quick sizing – sound power level and total differential pressure

Nominal length V Damper blade position
Nominal length V 45° 90°
Nominal length V D = 123 D = 158 D = 123 D = 158 D = 123 D = 158
Nominal length V Δpt LWA Δpt LWA Δpt LWA Δpt LWA Δpt LWA Δpt LWA
Nominal length l/s m³/h Pa dB(A) Pa dB(A) Pa dB(A) Pa dB(A) Pa dB(A) Pa dB(A)
600 11 38 4 <15 3 <15 5 <15 4 <15 7 <15 4 <15
600 25 90 19 31 17 28 25 32 20 28 36 32 24 28
600 40 144 49 45 44 42 65 46 50 42 91 46 60 42
600 50 180 77 52 69 49 101 53 78 49 143 54 93 50
750 15 54 5 <15 4 <15 7 15 5 <15 11 15 7 12
750 30 108 20 33 17 29 28 33 20 29 43 34 25 29
750 40 144 35 41 30 37 50 42 35 37 77 42 45 38
750 55 198 65 51 56 47 94 52 66 48 145 53 85 48
900 15 54 4 <15 3 <15 6 <15 4 <15 10 <15 5 <15
900 35 126 20 34 17 30 32 34 21 30 53 35 28 31
900 50 180 41 44 33 41 65 45 42 41 107 46 58 41
900 65 234 70 53 56 49 110 54 71 49 181 55 97 50
1050 20 72 6 17 4 <15 9 17 6 <15 16 18 8 <15
1050 40 144 22 35 17 31 37 36 22 32 64 37 32 32
1050 55 198 41 45 31 41 70 45 42 41 120 46 60 42
1050 70 252 66 52 50 48 113 53 68 49 195 55 98 50
1200 25 90 7 20 5 17 13 21 8 17 24 21 11 17
1200 40 144 19 33 13 29 34 34 19 29 61 34 29 30
1200 55 198 35 42 25 38 64 43 36 39 114 44 54 39
1200 75 270 64 52 47 48 118 53 67 48 212 54 101 49
1350 25 90 7 19 5 15 13 19 7 15 23 20 11 15
1350 45 162 21 34 14 30 40 35 21 31 74 36 34 31
1350 65 234 43 45 29 41 83 46 44 42 154 47 70 42
1350 80 288 65 52 44 48 126 53 67 48 233 54 106 49
1500 30 108 8 22 6 18 17 22 9 18 32 23 14 19
1500 50 180 23 36 15 31 47 37 24 32 89 37 39 33
1500 70 252 45 46 29 41 92 47 47 42 174 48 77 43
1500 85 306 66 52 43 47 135 53 69 48 256 55 113 49
1650 30 108 5 18 4 <15 7 18 5 <15 11 19 6 <15
1650 50 180 13 31 11 28 20 32 13 28 31 33 18 28
1650 75 270 29 43 24 40 44 44 30 40 70 45 39 40
1650 100 360 51 52 43 49 78 53 52 49 124 54 69 50
1800 35 126 6 20 5 17 9 21 6 17 15 21 8 17
1800 58 210 16 34 13 30 25 35 16 31 40 36 22 31
1800 82 294 30 44 25 40 48 45 31 41 79 46 42 41
1800 105 378 50 52 41 48 79 53 51 49 130 54 70 50
1950 35 126 5 19 4 16 8 20 5 16 14 20 7 16
1950 60 216 15 34 12 30 24 34 15 30 41 35 21 31
1950 85 306 30 44 23 40 49 45 30 41 82 46 42 41
1950 110 396 49 52 39 48 81 53 51 49 137 55 71 50

Quick sizing – sound power level and total differential pressure

Nominal length V Damper blade position
Nominal length V 45° 90°
Nominal length V D = 158 D = 198 D = 158 D = 198 D = 158 D = 198
Nominal length V Δpt LWA Δpt LWA Δpt LWA Δpt LWA Δpt LWA Δpt LWA
Nominal length l/s m³/h Pa dB(A) Pa dB(A) Pa dB(A) Pa dB(A) Pa dB(A) Pa dB(A)
600 25 90 5 17 5 <15 8 17 6 <15 11 17 7 <15
600 45 162 17 32 15 29 24 33 18 29 37 33 23 29
600 65 234 35 43 31 40 50 44 37 40 76 45 47 41
600 85 306 60 52 52 49 85 53 62 49 130 54 80 50
750 30 108 6 18 5 <15 9 18 6 <15 14 19 8 15
750 50 180 15 31 12 28 24 32 16 28 39 33 22 29
750 80 288 38 45 31 42 61 46 41 42 100 47 56 43
750 100 360 60 53 49 49 95 54 63 50 156 55 88 51
900 35 126 6 19 5 16 10 19 6 16 18 20 9 16
900 60 216 17 34 13 30 30 34 18 30 52 35 27 31
900 85 306 34 44 26 40 60 45 37 41 104 46 55 42
900 110 396 57 52 44 49 100 53 61 49 174 55 91 50
1050 40 144 7 20 5 17 12 21 7 17 22 21 11 17
1050 65 234 17 33 12 30 32 34 18 30 58 35 29 31
1050 90 324 32 43 23 39 61 44 35 40 110 45 55 41
1050 120 432 57 52 41 48 108 53 62 49 196 55 98 50
1200 45 162 7 21 5 18 14 22 8 18 27 23 13 18
1200 70 252 17 33 12 30 34 34 19 30 64 35 31 31
1200 100 360 35 44 24 40 70 45 38 41 131 46 63 42
1200 130 468 58 52 40 48 118 54 64 49 222 55 106 50
1350 50 180 8 22 5 19 17 23 9 19 32 24 15 19
1350 80 288 20 35 13 31 43 36 22 32 82 37 38 33
1350 110 396 38 45 25 41 80 46 42 42 155 47 72 43
1350 140 504 61 52 40 48 130 54 68 50 250 56 116 51
1500 55 198 9 23 6 19 20 24 10 20 38 25 17 20
1500 90 324 23 37 15 33 52 38 26 34 102 39 46 35
1500 125 450 45 47 28 43 100 48 50 44 196 50 89 45
1500 150 540 65 53 40 49 144 54 72 50 282 56 128 51
1650 60 216 5 21 4 18 9 22 6 18 15 22 8 18
1650 95 342 13 34 11 31 22 35 14 31 37 36 20 31
1650 135 486 26 45 21 41 44 46 28 42 75 47 41 42
1650 175 630 44 53 35 49 74 54 47 50 126 56 68 51
1800 65 234 6 22 4 19 10 23 6 19 17 23 9 19
1800 105 378 14 36 11 32 25 36 16 32 44 37 23 33
1800 145 522 27 45 21 42 48 46 29 42 83 47 44 43
1800 185 666 44 53 34 50 78 54 48 50 135 56 71 51
1950 70 252 6 23 5 19 11 24 6 20 19 24 10 20
1950 110 396 14 36 11 32 26 36 16 32 47 37 24 33
1950 150 540 27 45 20 41 48 46 29 42 86 47 44 43
1950 190 684 43 52 32 49 78 54 46 50 138 55 71 51

Slot diffusers with individually manually adjustable air control elements and an aesthetically shaped face section with one or two slots, for horizontal one-way, horizontal alternating or angled alternating air discharge. For supply air or extract air. For installation into suspended ceilings.

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.

Clamp fixing or concealed screw fixing

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
  • 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
  • End plate and end angle made of aluminium
  • Lip seal made of rubber
  • Lining 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/EG
  • 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 – 1950 mm
  • Number of slots: 1, 2
  • Neck extension: 0, 25, 50, 75, 100, 125 mm
  • Minimum volume flow rate: 20 – 40 (l/s)/m or 72 – 144 (m³/h)/m
  • Maximum volume flow rate with LWA ≅ 50 dB(A): 70 – 120 (l/s)/m or 252 – 432 (m³/h)/m
  • Supply air to room air temperature difference: –10 to +10 K

00130909_0

 Type
VSD50       Slot diffuser

 Number of slots
1
2

 Connection
F       Diffuser face only
E       90° corner section only
       Plenum box
AK       With clamp fixing
DK       With lining and clamp fixing
AS       With concealed screw fixing
DS       With lining and concealed screw fixing
AA       Asymmetric and with clamp fixing
       Diffusers with a shorter plenum box as well as non-active diffusers require a rear blanking plate
       Length of blanking plate = L1 – L3

 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
600
750
900
1050
1200
1350
1500
1650
1800
1950

       Specify ØD and Y only for AK, DK, AS, DS and AA
       Up to LN 1500 with one spigot, from LN 1650 with two spigots
       spigot diameter ØD
123       1 slot
158       1 or 2 slots
198       2 slots

 

       Neck extension Y
       No entry: 0
25
50
75
100
125
(125 only AK, DK and AA)

 End pieces
       No entry: without
       Both ends with end angles factory fitted
C1       to profile 000
C2       to profile B00
       Both ends with end plates factory fitted
C5       to profile 000
C6       to profile B00
       To be ordered separately for slot diffusers for linear arrangement

 Extended border
       No entry: without (only AK, DK, AA)
B00       With extended border

 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 %

 Air pattern
       No entry: alternating horizontal (WH)
WS       Alternating angled
HL       Horizontal left (opposite direction from spigot)
HR       Horizontal right (same direction as spigot)

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

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Thank you for your message!

Visual contact Visual contact

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Our department for Service-Requests will contact you asap.
For general question regarding products or services you can also call:
Tel.: +44 (0)1842 754545 | Fax: +44 (0)1842 763051