VD | TROX Middle East (LLC)

VD

For high rooms, with adjustable air control blades

Square ceiling swirl diffusers, with manual or motorised adjustment of the air pattern to ensure draught-free ventilation of the occupied zone both in heating and cooling modes

Nominal sizes 425, 600, 775, 1050
Volume flow rate range 95 – 1490 l/s or 342 – 5364 m³/h
Diffuser face made of aluminium with anodised finish
For supply air
For variable and constant volume flows
High induction results in a rapid reduction of the temperature difference and airflow velocity
Discharge direction can be adjusted manually or with an actuator
Ideal for high rooms

Optional equipment and accessories

Exposed diffuser face available in RAL CLASSIC colours
Horizontal or vertical duct connection
An extended border improves the horizontal air discharge in cooling mode
Protective cage for use in gymnasiums
Actuators for adjusting the air discharge direction

Application

Application

Type VD ceiling swirl diffusers are used as supply air diffusers for high rooms in comfort and industrial zones
For production halls, gymnasiums, theatres and conference rooms as well as for large internal spaces in airports, railway stations and shopping centres
For mixed flow ventilation with different air patterns in heating and cooling modes
Horizontal swirling supply air discharge in cooling mode
The efficient swirl creates high induction levels, thereby rapidly reducing the temperature difference and airflow velocity
Angled or vertical air discharge in heating mode
For variable and constant volume flows
For supply air to room air temperature differences from –12 to +15 K
For room heights exceeding 3.8 m
With freely suspended installation, an extended border supports the horizontal air discharge in cooling mode

Special characteristics

With adjustable air control blades for high rooms
The air pattern can be adjusted manually or with an actuator
Horizontal or vertical duct connection

Nominal sizes

425, 600, 775, 1050

Description

Variants

Diffuser face only

Connection

H: Horizontal duct connection
V: Vertical duct connection

Parts and characteristics

Square diffuser face with four sections of blades
Diffuser face with blades that can be adjusted simultaneously, for air discharge from horizontal (0°) to vertical (90°)
Plenum box for horizontal or vertical duct connection

Accessories

Electric actuators for adjusting the air discharge direction
Extended border and protective cage

Useful additions

TDC temperature difference control module

Construction features

Spigot suitable for circular ducts to EN 1506 or EN 13180

Materials and surfaces

Diffuser face made of extruded aluminium sections
Plenum box, cross bar and extended border made of galvanised sheet steel
Protective cage made of steel mesh
Diffuser face with anodised finish, E6-C-0, natural colour
Protective cage powder-coated RAL 9010, pure white
Extended border powder-coated RAL 9006, white aluminium
P1: Powder-coated, RAL CLASSIC colour

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 the VD, with plenum box for horizontal duct connection

A VD-H
B VD-...-K
C VD-...-S
① Diffuser face
② Adjustable blades
③ Plenum box
④ Suspension hole
⑤ Spigot
Optional
⑥ Cable gland
⑦ Actuator and cross bar
⑧ Protective cage
⑨ Extended border

Functional description

Ceiling swirl diffusers in air conditioning systems create a swirl to supply air to rooms. 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. Ceiling swirl diffusers allow for large volume flow rates. 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 VD ceiling swirl diffusers have adjustable air control blades. Different air patterns allow for cooling or heating mode, or for the adjustment to varying loads. Horizontal air discharge is omni directional. Vertical air discharge is possible in heating mode. The supply air to room air temperature difference may range from –12 to +15 K.

An actuator (optional) adjusts the blades based on demand.

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.

VD-H, sound power level and total differential pressure

Nominal size	V		Δp_t	L_WA
Nominal size	l/s	m³/h	Pa	dB(A)
425	95	342	6	21
425	150	540	15	32
425	215	774	31	42
425	280	1008	52	50
600	210	756	9	28
600	310	1116	20	37
600	410	1476	35	44
600	510	1836	54	50
775	375	1350	8	26
775	510	1836	14	34
775	660	2376	23	41
775	885	3186	42	50
1050	675	2430	13	36
1050	825	2970	19	41
1050	975	3510	27	46
1050	1120	4032	35	50

VD-V, sound power level and total differential pressure

Nominal size	V		Δp_t	L_WA
Nominal size	l/s	m³/h	Pa	dB(A)
425	95	342	6	17
425	175	630	19	31
425	260	936	41	41
425	340	1224	70	50
600	210	756	7	19
600	355	1278	21	32
600	410	1476	28	36
600	660	2376	75	50
775	375	1350	6	22
775	545	1962	14	32
775	715	2574	24	42
775	885	3186	38	50
1050	675	2430	11	30
1050	950	3420	22	38
1050	1225	4410	37	44
1050	1490	5364	55	50

Variants, Accessories, Dimensions and weight, Product details

VD-V

VD-H

Variant

Ceiling swirl diffuser with square diffuser face
With plenum box for horizontal duct connection

Nominal sizes

425, 600, 775, 1050

Parts and characteristics

Square diffuser face with four sections of blades
Diffuser face with blades that can be adjusted simultaneously, for air discharge from horizontal (0°) to vertical (90°)
Plenum box for horizontal duct connection

Construction features

Spigot suitable for circular ducts to EN 1506 or EN 13180

VD-V

Variant

Ceiling swirl diffuser with square diffuser face
With plenum box for vertical duct connection

Nominal sizes

425, 600, 775, 1050

Parts and characteristics

Square diffuser face with four sections of blades
Diffuser face with blades that can be adjusted simultaneously, for air discharge from horizontal (0°) to vertical (90°)
Plenum box for vertical duct connection

Construction features

Spigot suitable for circular ducts to EN 1506 or EN 13180

VD-*-K

VD-*-K

Accessories

Extended border

Nominal sizes

425, 600, 775, 1050

Parts and characteristics

An extended border supports the horizontal air discharge in cooling mode

VD-*-S

Accessories

Protective cage

Nominal sizes

425, 600, 775, 1050

Parts and characteristics

A protective cage protects the blades, e.g. in gymnasiums

VD-H

VD-H

Nominal size	□Q₁ mm	□Q₃ mm	H₃ mm	ØD mm	A mm	C mm	m kg
425	425	425	500	248	335	46	11
600	595	600	550	313	353	48	19
775	763	775	750	448	498	60	34
1050	1043	1050	800	498	523	60	57

Weights apply to the variant with actuator

VD-V

Nominal size	□Q₁ mm	□Q₃ mm	H₃ mm	ØD mm	C mm	m kg
425	425	425	500	248	46	11
600	595	600	550	313	48	19
775	763	775	550	448	60	29
1050	1043	1050	600	498	60	51

Weights apply to the variant with actuator

Diffuser face VD 00143583_0

Nominal size	□Q₁ mm	A_eff m²	A_eff vertical air discharge m²
425	425	0.0307	0.0781
600	595	0.0685	0.1819
775	763	0.1242	0.3405
1050	1043	0.2247	0.6358

Installation examples, Installation details, Basic information and nomenclature

Freely suspended installation 00144318_0

Downloads

product information

Product data sheet Actuators – Heating/Cooling

PD_2017_03_Heating_cooling_DE_en Product data sheet 670 KB pdf
Product data sheet Actuators – Modulating actuators

PD_2017_03_Variable_DE_en Product data sheet 430 KB pdf
Product data sheet Type VD

Product data sheet 3 MB pdf

certificates

Environmental Product Declaration VD

VD_EPD_2024_11_DE_en Environmental Product Declaration 1,3 MB pdf
Non-CE Manufacturer's statement VD

VD_NotCE_2022_02_08_14_22_10_DE_en Certificate 2,3 MB pdf

operation manuals

Installation manual Air terminal devices

IM_2018_06_A00000054447 Installation manual 1,2 MB pdf

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Nominal sizes	425, 600, 775, 1050 mm
Minimum volume flow rate	95 – 675 l/s or 342 – 2430 m³/h
Maximum volume flow rate, with L_WA ≅ 50 dB(A)	280 – 1490 l/s or 1008 – 5364 m³/h
Supply air to room air temperature difference	–12 to +15 K

Connection	Vertical
Adjustment	Electric actuator 230 V AC
Attachment	Extended border
Nominal size	600 mm
Exposed surface of diffuser face	RAL 9016, traffic white, gloss level 70 %

VD

For high rooms, with adjustable air control blades

Application

Description

Technical information

Function, Technical data, Quick sizing, Specification text, Order code

Variants, Accessories, Dimensions and weight, Product details

Installation examples, Installation details, Basic information and nomenclature

Downloads

product information

Product data sheet Actuators – Heating/Cooling

Product data sheet Actuators – Modulating actuators

Product data sheet Type VD

certificates

Environmental Product Declaration VD

Non-CE Manufacturer's statement VD

operation manuals

Installation manual Air terminal devices

TECHNICALLY NECESSARY

STATISTICS AND WEBSITE ANALYSIS

CONVENIENCE AND PERSONALISATION

FOR THE BEST TROX EXPERIENCE