Application
Special characteristics
Nominal sizes
Variants
Connection
Parts and characteristics
Attachments
Accessories
Useful additions
Construction features
Materials and surfaces
Mineral wool
Standards and guidelines
Maintenance
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
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
Materials and surfaces
Mineral wool
Technical data
Sizing data
Air-regenerated noise
This specification text describes the general properties of the product. Texts for variants can be generated with our Easy Product Finder design programme.
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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 |
VSD15-A
Variant
Parts and characteristics
VSD15-D
Variant
Parts and characteristics
Profiles
Aeff: One-way horizontal and alternating horizontal air discharge
Aeff WS: Alternating angled air discharge
mm LN | m² | m² |
Powder-coated RAL 9010, pure white
Installation and commissioning
These are only schematic diagrams to illustrate installation details.
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.
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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We are here for you
Please specify your message and type of request.
Tel.: +971 4 3417448 | Fax: +971 4 3417449
Contact
Thank you for your message!
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.: +971 4 3417448 | Fax: +971 4 3417449