VSD50-1-LT

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

Installation in lightweight partition walls with metal support structure

Angled one-way air discharge

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
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

Application

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
For easy and safe installation of the diffuser face after drywalling is complete

Nominal sizes

L_N: 550, 1175 mm

Description

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 L_N 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 abrasion 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

Schematic illustration of VSD50-1-LT as supply and extract air combination

① Diffuser face
② Adjustable air control element
③ End angle
④ Plenum box with acoustic lining
⑤ Acoustic lining (reduces room-to-room cross talk)
⑥ Spigot
⑦ Suspension hole
Optional
⑧ Lip seal
⑨ Damper blade for volume flow rate balancing

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 L_WA ≅ 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	D_t
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		0°		45°		90°
Nominal length	V		Δp_t	L_WA	Δp_t	L_WA	Δp_t	L_WA
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		0°		45°		90°
Nominal length	V		Δp_t	L_WA	Δp_t	L_WA	Δp_t	L_WA
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		0°			45°			90°
Nominal length	V		Δp_t supply air	Δp_t extract air	L_WA	Δp_t supply air	Δp_t extract air	L_WA	Δp_t supply air	Δp_t extract air	L_WA
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 screw 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
For easy and safe 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 abrasion 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 L_WA ≅ 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]
Δp_t _______________________ [Pa]

Air-regenerated noise

L_WA _______________________ [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.

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 L_N
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

VSD50-1-LT/550

Black air control elements

VSD50-1-LT

VSD50-1-LTVSD50-1-LT-AZ

Nominal length mm L_N	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

Nominal length mm L_N	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

VSD50-1-LT

Profiles

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

Nominal length mm L_N	A_eff m²
550	0.0055
1175	0.0118

Installation details, Commissioning, Basic information and nomenclature

Installation in lightweight partition walls with metal support structure

Installation opening

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.

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

Volume flow rate balancing

Open

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

f_m [Hz]

Octave band centre frequency

L_WA [dB(A)]

Sound power level of the air-regenerated noise

V [m³/h] and [l/s]

Volume flow rate

Δp_t [Pa]

Total differential pressure

All sound power levels are based on 1 pW.

Downloads

product information

Print page VSD50-1-LT
Product data sheet Type VSD50-1-LT

Product data sheet 1,2 MB pdf

brochures

Special leaflet Telefoniedämpfung von Luftdurchlässen

Special leaflet 1,3 MB pdf

certificates

Declaration of hygiene conformity Type VSD50-1-LT

VSD50-1-LT_HC_2020_06_08_DE_en Hygiene certificate 1,4 MB pdf
Non-CE Manufacturer's statement VSD50-1-LT

VSD50-1-LT_NotCE_2022_02_08_14_38_07_DE_en Certificate 1,4 MB pdf

operation manuals

Installation manual Slot diffusers

A00000054449 Installation manual 1000 KB pdf

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VSD50-1-LT

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

Application

Description

Technical information

Function, Technical data, Quick sizing, SPECIFICATION TEXT, Order code

Variants, Dimensions and weight, Product details

Installation details, Commissioning, Basic information and nomenclature

Downloads

product information

Print page VSD50-1-LT

Product data sheet Type VSD50-1-LT

brochures

Special leaflet Telefoniedämpfung von Luftdurchlässen

certificates

Declaration of hygiene conformity Type VSD50-1-LT

Non-CE Manufacturer's statement VSD50-1-LT

operation manuals

Installation manual Slot diffusers

TECHNICALLY NECESSARY

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CONVENIENCE AND PERSONALISATION

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