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Swirl DiffusersType VDLadjustable, for mounting heights 3.80 m

T 2.2/7/EN/2

TROX GmbH Telephone +49/28 45/2 02-0Telefax +49/2845/202-265

Heinrich-Trox-Platz e-mail trox@trox.de

D-47504 Neukirchen-Vluyn www.troxtechnik.com

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Contents Description

Description 2

Construction Dimensions 3

Construction Dimensions Materials 4

Installation 5Nomenclature Quick Selection Example 6

Acoustic Data Pressure Drop 7

Aerodynamic Data for Heating 9

Aerodynamic Data for Cooling 10

Order Details 12

Description

For spaces with varying heat loads, the supply air often has tobe either cool, isothermal or warm as required.

With the VDL adjustable swirl diffusers, the blade position canbe altered (horizontal, angled or vertical air discharge) to giveoptimum penetration into the occupied zone when cooling orheating, at the same time meeting good comfort criteria.

With high air handling capacity, the swirl diffuser is suitable foruse in industrial and comfort conditioning environments.

The diffuser can be used with large floor to ceiling heights(e. g. factories, airport terminals, theatres, banking halls) alsoin lower ceiling applications 3.80 m (e. g. assembly rooms),particularly where the supply air temperature differential variesbetween -10 K and +15 K.

On the constructions with fixed air control blades, the air isdischarged in a horizontal direction only.

Blade positon for horizontal air discharge (supply air cooling)

Blade position for 45 discharge ( supply air isothermal) Blade position for vertical air discharge (supply air heating)

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D1

D3

D2

H1 H

2(X)

H3(M)

A

X

A

D2

H4

D3

D2

D1

A

Y

A

D215

b

3

Construction Dimensions

Construction

The VDL swirl diffusers are available in four sizes. The diffuserface comprises an outer ring incorporating a discharge nozzle,

air control blades (adjustable or fixed), a central cover cap and arear mounted spigot. The blade position can be adjusted eithermanually by taking off the cap and loosening the winged screwor by means of an electric actuator. The outer discharge ring issupplied on request with or without a flange.

The units with a removable face have a safety cable betweenplenum box/casing and diffuser face. The face can easily befitted or removed by means of 3 quick release fasteners.

The unit variants with top entry casings are connected directlyto the duct. The casings are provided with a reinforcing edge.A lip seal is optional. The diffuser sizes 630 and 800 aresupplied with additional opposed action swirl blades.

VDL-...-F(VDL-A-F-M shown)

VDL-...-V(VDL-B-V-D-E1...E3 shown)

View XDischarge ring without flange (A)

View YDischarge ring with flange (B)

additional opposedaction swirlblades on sizes630 and 800 only

removablediffuser face

circularcasing

rear mounted spigot

cap

winged screw

Dimensions in mm

Size A D1 D2 D3 H1 H2 H3 H4

315 42 313 464 381 145 92 80 215

400 45 398 567 468 157 101 89 236

630 51 628 871 700 204 117 105 367

800 55 798 1077 871 229 123 111 538

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D4H5

H

7

H6

D2

D5

H8

65 61

A

A

K

2

76

~50 ~50

10

10,5

10

W

D6

AA

C

D3

4

Construction Dimensions Materials

Construction

Type VDL-...-H swirl diffuser sizes 315 and 400 with side entryspigots are supplied with an internal fixed angled perforated

plate in the plenum box. The diffuser sizes 630 and 800 aresupplied with additional opposed action swirl blades.

The circular spigot is supplied with a lip seal upon request.If the diffuser is freely suspended from a ceiling, a square collarcan be fitted to the diffuser face.An optional protection grid can be supplied for use in sportshalls.

Materials

The outer ring incorporating a discharge nozzle and the centralcover cap are made of aluminium. The blades, casing, spigots

and plenum box are made of galvanised sheet steel.

The surface of the diffuser face, collar and protection grid arepowder-coated white (RAL 9010, gloss level 50%), or in anotherRAL colour if requested (gloss level 70 % or RAL 9006 glosslevel 30 %).

VDL-...-H(VDL-A-H-N-X shown)

Protection grid (S)

(on VDL-B only)

Square collar (K)(on VDL-B only)

View A-A

View W View A

Perforated plate onsizes 315 and 400 only

Spigot withlip seal (L)

10.5

safety screw fixing bar

Dimensions in mm

Size A D2 D3 D4 D5 D6 H5 H6 H7 H8 C K

315 42 464 381 317 248 488 474 150 282 290 630 435

400 45 567 468 402 313 591 581 168 368 351 800 500

630 51 871 700 628 398 895 812 293 468 526 1260 750

800 55 1077 871 798 498 1101 1081 458 568 741 1600 1000

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D7

3001)

Z

D7

D7

50 50

D7

50 50

5

Installation

Installation

Due to their method of operation, the VDL swirl diffusers can bemounted flush in a ceiling or suspended in free space.

When fitted flush in open grid ceilings, the dischargecharacteristics are the same as when suspended in free space.The angle of the air discharge is continuously adjustable.

Type VDL-...-H swirl diffusers are suspended by the customeron cables or slotted strips using the drillings provided.Typ VDL-...-F and VDL-...-V are mounted directly on the duct.

The installation of the diffuser face and access to or replacementof an actuator can easily be carried out by the operation of the3 quick release fasteners (see detail Z).

VDL-B-V (with flange)

On site mounting of the VDL unit on thesupply duct

1) Installed 300 mm beneath a flat ceilingfor continuous adjustment of the airdischarge angle.

to unfastenpushdownwards

to fix pushupwards

3 quick release fasteners evenlydistributed on the perimeter

Suspensionby customer usingthe 10.5 mmholes provided

Safety cable

fixed

unfastened

VDL-B-H (with flange) VDL-A-H (without flange)

VDL-A-V (without flange) View ZQuick release fastener

Required opening sizes for flush installation in a flat ceiling

Size 315 400 630 800

D7 400 500 750 950

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Acoustic Data Pressure Drop(fixed types)

5 Sound power level and pressure drop 7 Sound power level and pressure dropSize 315 Size 630

6 Sound power level and pressure drop 8 Sound power level and pressure drop

Size 400 Size 800

200

50

30

25

20

10

560 100 150l/s 200 250 300 340

LWAin

dB(A)

25

30

35

40

45

50

5550

45

40

3

5

30

25

20

LWNC

m3/h 400 600 800 1000 1200

15

35

4045

150

100

20

6055

VDL-...-H

VDL-...-F

100

90

80

70

60

50

40

30

20

109

8

7

6

5200 300 400l/s 500 600 700 800 900 1000

LWAin

dB(A)

20

25

30

35

40

45

50

55

50

45

40

35

30

25

20

LWNC

m3/h 1000 1500 2000 2500 3000 3500

VDL-...-H

VDL-...-F

200

50

30

25

20

10120 200 300l/s 400 500

LWAin

dB(A)

25

30

35

40

45

50

5550

45

40

35

30

25

20LW

NC

m3/h 600 800 1400 1600 1800

15

35

40

45

150

100

55

12001000

140

VDL-...-F

VDL-...-H

100

90

80

70

60

50

40

30

20

109

8

7

6

5300 400 600l/s 800 1000 1200 1400

LWAin

dB(A)

25

30

35

40

45

50

55

50

45

40

35

30

25

20

LWNC

m3/h 1500 2000 2500 3000 4000 50003500 4500

VDL-...-F

VDL-...-H

PressuredropptinPa

PressuredropptinPa

Pre

ssuredropptinPa

Pre

ssuredropptinPa

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Aerodynamic Data for Heating

9 Max. penetration depth discharge angle 45 11 Max. penetration depth discharge angle 75

10 Max. penetration depth discharge angle 60 12 Max. penetration depth discharge vertical

+5K

tZ

=0K

V [m3/h] =

V [l/s] x 3.6

Size

Max.penetrationdepthH1max.

inm

Size

Max.penetrationdepthH1max.

inm

Size

Max.

penetrationdepthH1max.

inm

Size

Max.

penetrationdepthH1max.

inm

Volume flow in l/s Volume flow in l/s

Volume flow in l/s Volume flow in l/s

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Aerodynamic Data for Cooling

13 Determination of spacing between diffuser centres A 15 Determination of spacing between diffuser centres AB 5.00 m Size 315 B 5.00 m Size 630

14 Determination of spacing between diffuser centres A 16 Determination of spacing between diffuser centres AB 5.00 m Size 400 B 5.00 m Size 800

H1=

0.2

0.3

m/s

H1=

0.2

0.3

m/s

H1=

0.2

0.3

m/s

H1=

0.2

0.3

m/s

H1