Description
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
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/EC
- Faced with glass fibre fabric as a protection against abrasion through airflow velocities of up to 3937 fpm
- 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
Function
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.
Schematic Illustration of the VSD50 with Clamp Fixing
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
Specification Text
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/EC
- Faced with glass fibre fabric as a protection against abrasion through airflow velocities of up to 3937 fpm
- Inert to fungal and bacterial growth
Technical data
- Nominal length: 24 – 77 in
- Number of slots: 1, 2
- Neck extension: 0, 1, 2, 3, 4, 5 in
- 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
