ASLI Ceiling Diffusers Set

Ceiling Diffusers

Supply Air Grilles

Return Air Grilles

Louvers

Jet Diffusers

Floor Diffusers

Dampers

Damper Actuators

VAV Terminal Units

Flexible Air Duct

Silencer

CEILING DIFFUSERS CONTENTS

• DA Directional Ceiling Diffuser

• DG Double Deflection Ceiling Diffuser

• DP Plate Type Ceiling Diffuser

• DJ Modular Core Directional Diffuser

• CA Round Diffuser

• CA-A-C Round Diffuser

• CAC Ceiling Diffuser

• CAC 2 Ceiling Diffuser

• CP Plate Type Round Diffuser

• PD & PDC Perforated Face Diffuser

• SW-2T Swirl Diffuser

• SW-3T Curve-blade Swirl Diffuser

• SLLS Linear Ceiling Diffuser

• LTD Light Troffer Diffuser

• Ceiling Diffusers Accessories

CONTENTS

All stated specifications are updated at the printing date and subject to change without notice or obligation. The actual product might differ from pictures shown.

CEILING DIFFUSERS

Materials• DA-A: 1.0mm extruded aluminum.• DA-T: 0.7mm galvanized steel.

Surface Finish• DA-T: white powder coated, oven baked as standard.• DA-S: stainless steel original color.• DA-A: white powder coat oven baked or natural anodized.

Features• Frame for DA is flush.• DA diffuser can be made square or rectangular. The direction of air flow can be 1-way, 2-way, 3-way or 4-way.

Accessories• G1 Opposed blade damper.• C1 Radial fan blade damper.• D2 Square to round adapter.• C2 Crown damper.

Standard Sizes• Comply to requirements for both square & rectangular diffuser.

DA Construction Illustrations

DA Directional Ceiling Diffuser


n

n

n

n

n

n

n

DA Physical Dimension Unit:mm

DA-TDA-S

CNeck Size

ADuct SizeW + 10H + 10W + 10H + 10

BCeiling SizeW + 110H + 110W + 75H + 75

DFace SizeW + 123H + 123

595 x 595603 x 603

HHeight

W x H

DA-A

Model

W x H

65

50

DA page 1 of 4

CEILING DIFFUSERS

DA + G1 Opposed Blade Damper (OBD)• The G1 opposed blade damper is designed for even distribution of air over the entire face of diffuser. It is gear operated & can be adjusted from below by means of key or screw driver. The damper can be set at fully open, half open & fully close.

• G1 damper are constructed of galvanized steel with matt black as standard finish.

• Height for G1-T 50mm.



n

DA + C1 Radial Fan Blade Damper• The C1 radial fan blade damper is a volume control adjustable from below by means of key or screw driver.

• Mould pressed, 0.6mm thick galvanized steel with matt black as standard finish.

• Height for C1-T 60mm.

n

DA + D2 Square to Round Adapter c/w

Radial Fan Blade Damper • With D2 square to round adapter fitted to the DA, it will enable easy installation of flexible duct.

• The D2 adapter are constructed of 0.6mm galvanized steel with matt black as standard finish and optional with or without damper.

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DA + C2 Crown Damper• Model DA has a removable core for easy adjustable of OBD volume damper.

• The removable core is hooked to the inner frame a spring-loaded clip. Neck sizes above 450mm will not have a removable core.

• C2 crown damper provides maximum free area and uniform air distribution.

n

DA page 2 of 4

C2 Crown Damper

Adapter

CEILING DIFFUSERS



n DA Product Specification Unit:mm

Model CodeDA-T

DA-S

DA-A

Materials0.7 SPGC Steel

0.5 Stainless SteelSUS. 304

Extruded Aluminium A6063

Surface FinishWhite Powder Coat,

Oven Baked

Original Colour

White Powder Coat,Oven Baked or Natural Anodized

Standard Sizes150 X 150200 X 200250 X 250300 X 300350 X 350400 X 400450 X 450500 X 500550 X 550600 X 600

Accessories

G1 OpposedBlade Damper

D2 Square toRound Damper

C1 Radial Fan Blade

C2 Crown Damper

Order Key

n DA Performance Data (Square Inlet)

DA - T + C1 - 150 x 150

Model

Materials

Accessories

W H

Neck Size (mm)Neck Area (m2)

150 x 150(0.023)

200 x 200(0.04)

250 x 250(0.0625)

300 x 300(0.09)

350 x 350(0.1225)

CMHTotal Press (mmAq)

Throw (m)NC


Throw (m)NC


Throw (m)NC


Throw (m)NC


Throw (m)NC

Neck Vel. (m/s)

1700.95

1.5 - 2.1-

3051.0

1.8 - 2.4-

3721.1

2.1 - 3.5-

6801.6

2.1 - 3.0228701.3

2.4 - 3.324

2.0

3002.1

3.0 - 3.9335342.1

3.3 - 4.5336503.2

3.2 - 4.831

11904.8

4.2 - 5.439

15204.1

5.1 - 6.341

3.5

2101.05

1.8 - 2.4222861.1

2.4 - 3.0234681.6

2.4 - 3.8-

8502.5

2.7 - 3.628

10902.1

3.3 - 4.230

2.5

2551.5

2.4 - 3.3284601.5

2.7 - 3.6285602.4

3.0 - 4.526

10203.4

3.3 - 4.534

13052.9

3.9 - 5.136

3.0

3402.6

3.3 - 4.5416102.6

4.2 - 5.4427454.1

3.5 - 5.136

13606.0

4.5 - 6.045

17405.3

5.7 - 7.250

4.0

1250.9

1.2 - 1.5-

2800.95

1.2 - 1.5--

1.01.3 - 1.8

-5101.2

1.5 - 2.1-

6551.2

1.8 - 2.4-

1.5

• Throw is based on terminal velocities of 0.5m/s-0.25m/s respectively.•NC value is based on a room absorption of 10 dB, re 10-12 watts.•Dash (-) in space indicates NC value less than 20.•Performance tables are based on steel construction. For performance with aluminium construction, the pressure loss is 1.15P, and add 2 for NC value.• Thickness of materials other than standard are available upon request.

DA page 3 of 4

CEILING DIFFUSERS



n DA Performance Data (Round Inlet)Neck Size (mm)Neck Area (m2)

200 ø(0.0324)

250 ø(0.0507)

300 ø(0.0731)

350 ø(0.0979)


Throw (m)NC


Throw (m)NC


Throw (m)NC


Throw (m)NC

Neck Vel. (m/s)

3501.5

2.4 - 3.5-

5482.4

3.0 - 4.5227903.4

3.6 - 5.426

10572.9

42 - 6.225

3

5253.4

3.0 - 4.3288205.3

4.0 - 5.432

11857.6

4.6 - 6.736

15856.7

5.4 - 7.737

4.5

4082.1

2.6 - 3.8226403.2

3.2 - 4.8269204.8

4.3 - 5.730

12344.1

4.9 - 6.931

3.5

4672.6

2.7 - 4.2257304.1

3.5 - 5.130

10526.0

4.3 - 6.433

14105.3

5.2 - 7.234

4

5834.2

3.1 - 4.4319136.5

4.1 - 5.735

13158.7

5.2 - 7.240

17627.9

5.5 - 8.541

5

2921.1

2.1 - 3.2-

4561.6

2.4 - 3.8-

6582.5

3.0 - 4.8228812.1

3.6 - 5.722

2.5

2331.0

1.5 - 2.6-

3651.1

2.1 - 3.5-

5261.6

2.5 - 4.2-

7051.3

2.7 - 5.2-

2

• Throw is based on terminal velocities of 0.5m/s-0.25m/s respectively.•NC value is based on a room absorption of 10 dB, re 10-12 watts.•Dash (-) in space indicates NC value less than 20.•Performance tables are based on steel construction. For performance with aluminium construction, the pressure loss is 1.15P, and add 2 for NC value.

n DA Performance Data (Rectangular)Face Size

(mm x mm)

1200 x 600

Vel. Press. (mmAq)Tot. Press. (mmAq)

CMHNC

Throw(m)

1200mm side600mm side

Neck Vel. (m/s)

0.42.9

462432

13.9 - 19.810.7 - 15.4

2.5

1.07.5

739844

17.6 - 24.913.7 - 19.3

4.0

0.54.2

554837

15.4 - 21.711.9 - 16.8

3.0

0.85.7

647341

16.6 - 23.412.7 - 18.0

3.5

1.29.4

832247

18.8 - 26.314.4 - 20.5

4.5

0.21.9

369926

12.4 - 17.69.8 - 13.7

2.0

0.11.0

2774-

10.7 - 15.47.3 - 11.9

1.5

• Throw is based on terminal velocities of 0.5m/s-0.25m/s respectively.•NC value is based on a room absorption of 10 dB, re 10-12 watts.•Dash (-) in space indicates NC value less than 20.•Performance tables are based on steel construction. For performance with aluminium construction, the pressure loss is 1.15P, and add 2 for NC value.

DA page 4 of 4

CEILING DIFFUSERS

Materials• DG-T: 0.6mm SPGC galvanized steel.

Surface Finish• White powder coated, oven baked as standard.

Features• The diffuser core in the center is made of double deflection blade, which enables more air distribution in the perpendicular direction. It is suitable for high ceiling installation.

Accessories• G1 Opposed blade damper.• C1 Radial fan blade damper.• C2 Crown damper.

Standard Sizes• Comply to requirements for both square & rectangular diffuser.

DG Construction Illustrations

DG Double Deflection Ceiling Diffuser


n

n

n

n

n

n

n

DG Physical Dimension Unit:mm

C - Neck Size200 x 200250 x 250285 x 285365 x 365480 x 480

A - Duct Size210 x 210260 x 260295 x 295375 x 375485 x 485

B - Ceiling Size

370 x 370

450 x 450555 x 555

D - Face Size

410 x 410

490 x 490603 x 603

H - Height

89

n DG Product Specification Unit:mm

Model Materials Surface Finish Standard Sizes

200 x 200250 x 250285 x 285365 x 365

White Powder Coat,Oven Baked

0.6 SPGC SteelDG-T

AccessoriesG1 Opposed

Blade Damper

C1 Radial Fan Blade Damper

C2 Crown Damper

Order KeyDG - T + C1 - 250

Model

Materials

Accessories

Neck Size

DG page 1 of 2

CEILING DIFFUSERS

DG + G1 Opposed Blade Damper• The G1 OBD damper is designed for even distribution of air over the entire face of diffuser. It is gear operated & can be adjusted from below by means of key or screw driver. The damper can be set at fully open, half open & fully close.



DG Double Deflection Ceiling Diffuser


n

DG + C1 Radial Fan Blade Damper• With C1 radial fan blade damper fitted to the DG diffuser, it will enable easy installation of flexible duct.

• The C1 are constructed of 0.6mm galvanized steel with matt black as standard finish.

• Air balancing can be done by adjusting the damper.


n

n DG Performance Data (Square Inlet)Neck Size

mmNeck Area m2

200 x 200(0.04)

250 x 250(0.0625)

285 x 285(0.081)

365 x 365(0.133)

480 x 480(0.225)

Neck Vel. (m/s)

CMH

NCCMH

NCCMH

NCCMH

NCCMH

NC

Total Press(mmAq)

Throw(m)

Throw(m)

Throw(m)

Throw(m)

Throw(m)

31.92.5432

3.9 - 5.62.4 - 3.4

-675

4.7 - 6.73.0 - 4.2

21875

6.0 - 8.43.8 - 5.3

231436

7.0 - 9.74.3 - 6.0

242430

11.4 - 16.47.2 - 10.3

26

4.54.26.4648

5.0 - 7.03.1 - 4.2

301013

6.1 - 8.33.8 - 5.3

321312

7.4 - 10.34.6 - 6.4

352154

8.6 - 11.85.3 - 7.4

363645

14.7 - 20.39.0 - 12.9

39

3.52.43.8504

4.3 - 6.12.7 - 3.7

24788

5.4 - 7.43.3 - 4.6

261020

6.6 - 9.04.1 - 5.7

271675

7.5 - 10.64.7 - 6.6

292835

12.7 - 17.87.9 - 11.0

31

43.25.0576

4.6 - 6.63.0 - 4.0

28900

5.7 - 7.83.5 - 5.0

291166

7.0 - 9.84.4 - 6.1

321915

8.0 - 11.25.0 - 6.9

333240

13.8 - 19.28.4 - 11.9

36

55.17.8720

5.1 - 7.23.3 - 4.5

331125

6.5 - 9.04.0 - 5.5

371458

7.8 - 10.95.0 - 6.6

392394

9.0 - 12.55.5 - 7.8

404050

15.6 - -21.29.5 - 13.5

41

2.51.42.0360

3.3 - 5.02.2 - 3.1

-563

3.9 - 6.22.6 - 3.9

-729

4.9 - 7.73.2 - 4.7

-1197

5.6 - 9.03.6 - 5.5

-2025

9.6 - 15.26.0 - 9.4

22

20.81.1288

2.6 - 4.51.6 - 2.7

-450

3.3 - 5.42.1 - 3.4

-583

40 - 6.92.6 - 4.2

-957

4.5 - 8.02.9 - 5.0

-1620

7.9 - 13.54.8 - 8.2

-

22˚45˚

22˚45˚

22˚45˚

22˚45˚

22˚45˚

22˚45˚

•Throw is based on terminal velocities of 0.5 m/s - 0.25 m/s respectively.•NC value is based on a room absorption of 10 dB, re 10-12 watts.•Dash (-) in space indicates NC value less than 20.•With C1 damper, the pressure loss is 1.136P. And add 2 for for NC value.

DG page 2 of 2

CEILING DIFFUSERS

DJ Modular Core Directional Diffuser

■

■

■

■

■

■


Description

Materials• Frame: Aluminum extrusion.• Blade: Aluminum extrusion.

Surface Finish• Baked white powder coated as standard.

Features• Economical.• Long throw capability.• High air flow capability.• Suitable for exposed ductwork or surface mounted.• Suitable for ceiling. • Curved blade air pattern modules can be repositioned in the field simply and quickly without using any tools.• 1, 2, 3 and 4-way throw model available.• Optional removable air pattern modules.

Accessories• Opposed Blade Damper (G1).

DJ Construction Illustrations

ASLI DJ modular core directional diffusers are designed to supply large volume of air at low sound levels and pressure drops. Field adjustment of the air pattern is fast and easy by repositioning the curved modular pattern controllers to suit the desired application.

* when blades are fully opened.

Top View

4 Way DJ

3 Way DJ

Section View

DJ page 1 of 3

■ DJ Physical Dimension Unit:mm

N = Neck SizeN

F = Face SizeN + 60

H = Height48

D*14

CEILING DIFFUSERS



■ DJ Air Flow Performance Data

Neck Size(mm x mm)

150 X 150

200 X200

250 X 250

300 X 300

350 X 350

400 X 400

450 X450

500 X 500

Neck Vel. (m/s)Vel. Press (mmAq)Tot. Press (mmAq)

CMHNC

CMHNC

CMHNC

CMHNC

CMHNC

CMHNC

CMHNC

CMHNC

Throw(m)

Throw(m)

Throw(m)

Throw(m)

Throw(m)

Throw(m)

Throw(m)

Throw(m)

1.50.21.0128

-0.9 - 2.11.2 - 3.01.2 - 3.01.8 - 4.3

226-

1.5 - 2.72.1 - 4.02.1 - 4.03.0 - 5.5

354-

1.5 - 3.01.8 - 4.31.8 - 4.32.7 - 6.1

510-

2.4 - 4.33.4 - 5.83.4 - 5.84.9 - 8.2

694-

2.7 - 4.94.0 - 6.74.0 - 6.75.8 - 9.8

906-

3.4 - 5.54.6 - 7.64.6 - 7.66.4 - 11.0

1148-

3.7 - 6.15.2 - 8.85.2 - 8.87.3 - 12.5

1416-

3.7 - 7.05.8 - 9.85.8 - 9.87.9 - 13.7

4 Way3 Way2 Way1 Way








DJ page 2 of 3

20.31.7170

-1.8 - 2.42.4 - 3.42.4 - 3.43.4 - 4.9

303-

2.1 - 3.03.0 - 4.63.0 - 4.64.6 - 6.4

473-

2.1 - 3.73.0 - 4.93.0 - 4.94.6 - 7.0

680-

3.4 - 4.94.6 - 6.4.6 - 6.6.7 - 9.4

92520

4.0 - 5.55.5 - 7.95.5 - 7.97.6 - 11.3

120921

4.3 - 6.46.1 - 8.86.1 - 8.86.1 - 12.8

153021

4.9 - 7.36.7 - 10.16.7 - 10.19.8 - 14.3

188922

5.5 - 7.97.6 - 11.37.6 - 11.310.7 - 15.8

2.50.42.721321

1.8 - 2.72.7 - 3.72.7 - 3.73.7 - 5.5

37722

2.4 - 3.73.7 - 4.93.7 - 4.95.2 - 7.0

59024

2.7 - 4.04.0 - 5.54.0 - 5.55.5 - 7.9

85025

3.7 - 5.55.2 - 7.65.2 - 7.67.6 - 10.7

115826

4.3 - 6.1 6.1 - 8.86.1 - 8.88.8 - 12.5

151127

5.2 - 7.07.0 - 10.17.0 - 10.110.1 - 14.3

191327

5.8 - 7.97.9 - 11.37.9 - 11.311.3 - 16.2

236128

6.4 - 8.88.8 - 12.58.8 - 12.512.5 - 17.7

30.63.725526

2.1 - 3.03.0 - 4.33.0 - 4.34.3 - 5.8

45627

2.7 - 4.04.0 - 5.54.0 - 5.55.5 - 7.9

70729

3.0 - 4.34.3 - 6.14.3 - 6.16.1 - 8.8

102030

4.3 - 5.85.8 - 8.25.8 - 8.28.2 - 11.6

138931

4.9 - 6.76.7 - 9.46.7 - 9.49.8 - 13.7

181432

5.5 - 7.97.6 - 11.07.6 - 11.011.0 - 15.5

229532

6.1 - 8.88.8 - 12.28.8 - 12.212.5 - 17.7

283433

7.0 - 9.89.8 - 13.79.8 - 13.713.7 - 19.5

3.50.85.229830

2.1 - 3.03.0 - 4.63.0 - 4.63.7 - 6.4

52931

3.0 - 4.34.3 - 5.84.3 - 5.86.1 - 8.5

82633

3.4 - 4.94.6 - 6.74.6 - 6.76.7 - 9.4

119034

4.6 - 6.46.4 - 8.86.4 - 8.88.8 - 12.8

162035

5.2 - 7.37.3 - 10.47.3 - 10.410.4 - 14.6

211736

6.1 - 8.58.2 - 11.98.2 - 11.911.9 - 16.8

267837

6.7 - 9.49.4 - 13.49.4 - 13.413.4 - 18.9

330737

7.0 - 10.710.4 - 14.610.4 - 14.614.9 - 21.0

41.06.734033

2.4 - 3.43.4 - 4.93.4 - 4.94.9 - 6.7

60435

3.0 - 4.64.9 - 6.74.9 - 6.76.7 - 9.4

94436

3.7 - 5.24.9 - 7.04.9 - 7.07.0 - 10.1

136038

4.9 - 6.76.7 - 9.46.7 - 9.49.4 - 13.4

185139

5.5 - 7.97.9 - 11.07.9 - 11.011.3 - 15.8

241739

6.4 - 9.18.8 - 12.58.8 - 12.512.8 - 18.0

306040

7.3 - 10.110.1 - 14.310.1 - 14.314.3 - 20.4

377741

7.9 - 11.311.3 - 15.811.3 - 15.815.8 - 22.6

4.51.38.438336

2.4 - 3.73.7 - 5.23.7 - 5.25.2 - 7.3

68038

3.4 - 4.94.9 - 6.74.9 - 6.76.7 - 9.4

106340

3.7 - 5.55.2 - 7.65.2 - 7.67.6 - 10.7

153041

5.2 - 7.37.0 - 10.17.0 - 10.110.1 - 14.3

208342

5.8 - 8.28.2 - 11.68.2 - 11.611.9 - 16.8

272043

6.7 - 9.49.4 - 13.49.4 - 13.413.4 - 19.2

344343

7.6 - 10.710.7 - ̀ 4.910.7 - ̀ 4.915.2 - 21.6

425044

8.5 - 11.911.9 - 16.811.9 - 16.816.8 - 23.8

51.610.442539

2.7 - 3.73.7 - 5.23.7 - 5.25.5 - 7.6

75541

3.7 - 5.24.9 - 7.04.9 - 7.07.0 - 10.1

118042

4.0 - 5.85.5 - 7.95.5 - 7.97.9 - 11.3

170044

5.5 - 7.67.6 - 10.77.6 - 10.710.7 - 15.2

231445

6.1 - 8.88.8 - 12.58.8 - 12.512.5 - 17.7

302345

7.0 - 10.110.1 - 14.010.1 - 14.014.3 - 20.1

382548

7.9 - 11.311.3 - 15.811.3 - 15.816.2 - 22.6

472347

8.8 - 12.512.5 - 17.712.5 - 17.717.7 - 25.3

• Throw is based on terminal velocity of 0.5m/s and 0.25m/s respectively.• Throw is based on isothermal condition.

• NC value is based on room absorption of 10dB, re 10-12 watts.• Dash (-) in space indicates NC value less than 20.• The performance data is tested in pattern controllers fully opened at 45˚.

CEILING DIFFUSERS



■ DJ Air Flow Performance Data

Neck Size(mm x mm)

550 X 550

600 X 600

Neck Vel. (m/s)Vel. Press (mmAq)Tot. Press (mmAq)

CMHNC

CMHNC

Throw(m)

Throw(m)

1.50.21.0

1714-

4.6 - 7.66.1 - 10.76.1 - 10.78.8 - 15.2

2040-

4.9 - 8.26.7 - 11.66.7 - 11.69.8 - 16.5



DJ page 3 of 3

20.31.7

228523

5.8 - 8.88.2 - 12.28.2 - 12.2

11.9 - 17.7 272023

6.4 - 9.48.8 - 13.48.8 - 13.412.8 - 19.2

2.50.42.7

285829

7.0 - 9.89.8 - 13.79.8 - 13.713.7 - 19.5

340029

7.6 - 10.710.7 - 14.910.7 - 14.915.2 - 21.3

30.63.7

342934

7.6 - 10.710.7 - 14.910.7 - 14.915.2 - 21.3

408034

8.2 - 11.611.6 - 16.511.6 - 16.516.5 - 23.5

3.50.85.2

400038

8.2 - 11.611.6 - 16.211.6 - 16.216.5 - 23.2

476038

8.8 - 12.812.5 - 17.712.5 - 17.718.0 - 25.3

41.06.7

457141

8.8 - 12.512.2 - 17.412.2 - 17.417.7 - 24.7

544042

9.4 - 13.413.4 - 18.913.4 - 18.919.2 - 27.1

4.51.38.4

667345

9.4 - 13.113.1 - 18.313.1 - 18.318.6 - 26.2

612045

10.1 - 14.314.3 - 20.114.3 - 20.120.4 - 28.7

51.610.4571447

9.8 - 13.713.7 - 19.513.7 - 19.519.5 - 27.7

680048

10.7 - 15.214.9 - 21.014.9 - 21.021.3 - 30.2

• Throw is based on terminal velocity of 0.5m/s and 0.25m/s respectively.• Throw is based on isothermal condition.

• NC value is based on room absorption of 10dB, re 10-12 watts.• Dash (-) in space indicates NC value less than 20.• The performance data is tested in pattern controllers fully opened at 45˚.

■

■

DJ Order CodeModel

DJExample: DJ-A-N500mmX500mm-G1

DJ Suggested SpecificationType DJ modular core directional diffuser shall consists of an outer frame and modular core with curved blade profile pattern controllers. The pattern controllers shall be adjustable from the diffuser face without using any tools for one, two, three or four way discharge. The diffuser shall have a collar as an integral part of the frame assembly which allows connection to the square duct. The diffuser shall be epoxy coated and furnished to architectural requirement.

■ Available Air Pattern Setting

MaterialA (Aluminum)

Neck Size (mm)Custom

AccessoriesG1

4-Way DJ 3-Way DJ

2-Way DJ 1-Way DJ

CEILING DIFFUSERS

Materials• DP-T: 0.6mm SPGC galvanized steel.

Surface Finish• White powder coat, oven baked as standard.

Features• The diffuser core for the DP supply air diffuser is in the form of a plate which will enable an even spread of air distribution.

Accessories• G1 Opposed blade damper.• C1 Radial fan blade damper.• C2 Crown damper.

Standard Sizes• DP-Round neck: 200ø, 250ø, 300ø(mm).• DP-Square neck: 200˚, 250˚, 300˚ (mm).

DP Construction Illustrations

DP Plate Type Ceiling Diffuser


n

n

n

n

n

n

n

DP Physical Dimension Unit:mm

C - Neck Size200250300

200 x 200250 x 250300 x 300

A - Duct Size210260310

210 x 210260 x 260310 x 310

B - Ceiling Size

560 x 560

410 x 410

595 x 595603 x 603

D - Face Size

450 x 450

H - Height

79

61

n DP Product Specification Unit:mm

Model Materials Surface Finish


0.6 SPGC SteelDP-T

AccessoriesC1 Radial

Fan Blade Damper

G1 OpposedBlade Damper

C2 Crown Damper

Standard Sizes

Round Neck200ø-300ø

Square Neck200ø-300ø

Order KeyDP - T + C1 - 250

Model

Materials

Accessories

Neck Size

DP page 1 of 2

CEILING DIFFUSERS

DP (Square Neck) + G1 Opposed Blade Damper• The G1 OBD damper is designed for even distribution of air over the entire face of diffuser. It is gear operated & can be adjusted from below by means of key or screw driver. The damper can be set at fully open, half open & fully close.



DP Plate Type Ceiling Diffuser


n

DP (Round Neck) + C1 Radial Fan Blade Damper• The C1 radial fan blade damper is a volume control adjustable from below by means of key or screw driver.

• Mould pressed, 0.6mm thick galvanized steel.


n

n DP Performance DataNeck Size mmNeck Area m2

200 x 200(0.04)

250 x 250(0.0625)

300 x 300(0.09)

200ø(0.0324)

250ø(0.0507)

300ø(0.0731)

CMHTot. Press(mmAq)

Throw(M)NC

CMHTot. Press(mmAq)

Throw(M)NC

CMHTot. Press(mmAq)

Throw(M)NC

CMHTot. Press(mmAq)

Throw(M)NC

CMHTot. Press(mmAq)

Throw(M)NC

CMHTot. Press(mmAq)

Throw(M)NC

Neck Vel. (m/s)

4321.4

1.7 - 2.3-

6752.0

2.1 - 3.8-

9723.0

3.0 - 4.8223501.1

1.4 - 1.8-

5481.6

1.7 - 3.0-

7902.4

2.4 - 3.9-

3

6483.0

2.4 - 3.426

10134.6

3.0 - 5.032

14586.4

4.3 - 7.0345252.4

1.9 - 2.8228203.8

2.5 - 4.126

11855.2

3.6 - 5.830

4.5

5041.9

1.9 - 2.7-

7882.8

2.4 - 4.122

11344.0

3.3 - 5.0254081.5

1.5 - 2.2-

6402.2

1.9 - 3.3-

9203.2

2.7 - 4.822

3.5

5762.4

2.2 - 3.4229003.6

3.0 - 4.326

12965.1

4.0 - 6.4304671.9

1.8 - 2.5-

4302.9

2.4 - 3.522

10524.2

3.2 - 5.226

4

7203.8

2.7 - 4.030

11255.8

3.3 - 5.235

16208.0

5.1 - 7.2385833.0

2.2 - 3.2259134.7

2.7 - 4.330

13156.4

4.2 - 6.033

5

3601.2

1.6 - 2.0-

5631.6

1.9 - 3.5-

8102.3

2.6 - 4.3-

2920.9

1.3 - 1.6-

4561.3

1.5 - 2.8-

6581.8

2.1 - 3.5-

2.5

2880.8

0.9 - 1.8-

4501.2

1.5 - 2.8-

6481.6

2.0 - 3.8-

2330.6

0.7 - 1.5-

3650.9

1.2 - 2.3-

5261.3

1.6 - 3.1-

2

•Throw is based on terminal velocities of 0.5 m/s - 0.25 m/s respectively.•NC value is based on a room absorption of 10 dB, re 10-12 watts.•Dash (-) in space indicates NC value less than 20.

DP page 2 of 2

CEILING DIFFUSERS

Materials• CA-A: 0.8mm aluminium sheet roll formed.• CA-P: injection moulded ABS plastic.• CA-T: 0.6mm steel galvanized steel.

Surface Finish• CA-A: white powder coat, oven baked or natural anodized.• CA-P: white color.• CA-T: white powder coat.

Features• Model CA is removable multi-cones diffuser with two angles of deflection, it has a removable centre core.

Accessories• C1 Radial fan blade damper.• C2 Crown damper.

Standard Sizes• CA-A: 150ø - 600ø(mm)

CA Construction Illustrations

CA Round Diffuser


n

n

n

n

n

n

n

CA Physical Dimension Unit:mm

Model150200250300350400450500550600

C - Neck Size150203254305355406450500550600

A - Duct Size155205258308358410453503553603

B - Ceiling Size240295335385445500575625675730

D - Face Size255305355407457562655705745805

H - Height8295103112114119120123128130

CA page 1 of 2

CEILING DIFFUSERS

CA Round Diffuser


n CA Performance DataNeck Size mmNeck Area m2

150ø(0.0182)

200ø(0.0324)

250ø(0.0507)

300ø(0.0731)

350ø(0.0979)

400ø(0.1297)

450ø(0.1642)

500ø(0.2027)

550ø(0.2452)

600ø(0.2919)

CMHTot. Press(mmAq)Radius of Diff(M)

NCCMH

Tot. Press(mmAq)Radius of Diff(M)

NCCMH


NCCMH


NCCMH


NCCMH


NCCMH


NCCMH


NCCMH


NCCMH


NC

Neck Vel. (m/s)

2622.3

1.1 - 2.0254672.5

1.4 - 2.6277302.5

2.2 - 3.228

10522.8

2.3 - 3.829

14102.9

2.6 - 4.329

18682.4

3.1 - 5.031

23652.3

3.5 - 5.832

29202.9

4.1 - 6.433

3530.2.8

4.3 - 7.033

42032.3

4.7 - 7.534

4

4606.9

2.0 - 3.2438167.7

2.6 - 4.344

12808.2

3.5 - 5.545

18428.7

4.1 - 6.846

24678.5

4.7 - 7.647

32706.9

5.5 - 8.647

41406.9

6.1 - 9.850

51108.5

7.0 - 11.152

61808.7

7.6 - 12.252

73557.7

8.2 - 13.153

7

3283.6

1.4 - 2.3325833.9

2.0 - 3.2349134.1

2.3 - 4.135

13154.4

2.9 - 4.737

17624.4

3.5 - 5.538

23353.6

4.1 - 6.540

29553.6

4.3 - 7.042

36504.4

5.0 - 7.842

44154.4

5.4 - 8.644

52553.9

5.8 - 9.444

5

3935.1

1.7 - 2.9387005.6

2.2 - 3.840

10955.8

2.8 - 4.741

15806.4

3.5 - 5.643

21156.5

4.1 - 6.543

28005.2

4.6 - 7.644

35465.1

6.2 - 8.546

43806.5

5.5 - 9.447

52956.4

6.3 - 10.448

63055.6

7.0 - 11.548

6

5259.1

2.4 - 3.84593310.2

3.2 - 5.047

146010.7

3.8 - 6.548

210511.2

4.7 - 7.650

282011.5

5.5 - 8.752

37359.1

6.4 - 10.252

47309.1

7.0 - 11.454

584011.5

8.5 - 12.556

706011.2

8.8 - 14.056

840510.2

9.4 - 15.257

8

1961.5

0.8 - 1.4-

3502.0

1.1 - 2.0225482.1

1.4 - 2.3237902.2

1.7 - 2.923

10572.0

2.0 - 3.224

14001.5

2.2 - 3.724

17731.5

2.5 - 41.325

21902.0

2.8 - 4.625

26482.2

3.2 - 5.026

31521.7

3.5 - 5.526

3

1300.8

0.5 - 0.8-

2331.0

0.8 - 1.1-

3651.0

0.8 - 1.4-

5261.1

1.0 - 2.0-

7050.9

1.3 - 2.2-

9340.8

1.4 - 2.6-

11820.8

1.6 -2.8-

14600.9

1.9 - 3.2-

17651.1

2.0 - 3.5-

21001.0

2.2 - 3.821

2

•Radius of diffusion based on terminal velocities of 0.5 m/s-0.25 m/s respectively.•NC value is based on a room absorption of 10 dB, re 10-12 watts.•Dash (-) in space indicates NC value less than 20.

CA page 2 of 2

n CA Product Specification Unit:mm

Model

CA-A

CA-P

CA-T

Materials

0.8 Aluminium Sheet

ABS Plastic

0.6mm Galvanized Steel

Surface FinishWhite Power Coat, Oven

Baked or Natural Anodized

White Colour

White Powder Coated

Accessories


150ø-350ø

C2 Crown Damper

Standard Sizes

150ø-600ø

Order KeyCA - A + C1 - 250

ModelMaterials

AccessoriesNeck Size

CEILING DIFFUSERS

Materials• CA-A-C: 0.8mm aluminium sheet roll formed.

Surface Finish• CA-A-C: white powder coat, oven baked or natural anodized.

Features• Model CA is removable multi-cones diffuser with two angles of deflection, it has a removable centre core.


Standard Sizes• CA-A-C: 150ø-300ø(mm)

CA-A-C Construction Illustrations

CA-A-C Round Diffuser


n

n

n

n

n

n

n

CA-A-C Physical Dimension Unit:mm

Model150200250300

A340ø440ø520ø610ø

B35404045

D147ø197ø247ø297ø

H125135145145

K80808080

T15202023

n CA-A-C Product Specification Unit:mm

Model

CA-A-C

Materials

0.8 Aluminium Sheet

Surface Finish

White Power Coat,Oven Baked or

Natural Anodized

Accessories


150ø - 300ø

C2 Crown Damper

Standard Sizes

150ø - 300ø

Order KeyCA - A + C1 - 250

Model

Materials

Accessories

Neck Size

CA-A-C page 1 of 2

CEILING DIFFUSERS

CA-A-C Round Diffuser


n CA-A-C Performance DataNeck Size mm Neck Area m2

152(0.0181)

202(0.0320)

252(0.0499)

302(0.0716)

CMHTot. Press(mmAq)

Radius of Diff(M)

CMHTot. Press(mmAq)

Radius of Diff(M)

CMHTot. Press(mmAq)

Radius of Diff(M)

CMHTot. Press(mmAq)

Radius of Diff(M)

1310.20.50.61.1--

2310.20.50.91.3--

3590.20.51

1.6--

5150.20.51.22--

HVHVHV

HVHVHV

HVHVHV

HVHVHV

•Radius of diffusion based on terminal velocities of 0.5 m/s-0.25 m/s respectively.•NC value is based on a room absorption of 10 dB, re 10-12 watts.•Dash (-) in space indicates NC value less than 20.

1630.30.80.71.4--

2880.30.81

1.6--

4480.30.81.22.1--

6440.30.81.42.5--

2610.921

2.330304610.92

1.42.731337180.92

1.73.43334

10310.922

4.13336

1960.51.20.81.7-

213460.51.21.2221235380.51.21.42.523257730.51.21.632427

2280.71.60.9226264030.71.61.32.327296280.71.61.5329309020.71.61.83.62932

2941.12.61.12.734345191.12.61.5335368071.12.61.83.83638

11591.12.62.14.63739

3922.14.61.33.640426922.14.61.94.14345

10762.14.62.25.14346

15462.14.62.66.24447

3261.43.21.2336365761.43.21.73.438408971.43.22

4.33940

12881.43.22.35.23942

NC

NC

NC

NC

CA-A-C page 2 of 2

Neck Vel. (m/s) 3 4.53.5 4 5 62.52

CEILING DIFFUSERS

Materials• CAC-T: 0.6mm SPGC galvanized steel, mould pressed.• CAC-P: injection moulded ABS Plastic.• CAC-A: aluminum.

Surface Finish• Baked white powder coat as standard.• CAC-P: white colour.

Features• Face size is 603mm X 603mm designed for T-bar ceiling mounting.• Round diffuser: each diffusing cone is mould pressed, no welding joint.


Patent No• 574406

Standard Sizes• 200ø, 250ø, 300ø, 350ø(mm)

CAC Construction Illustrations

CAC Ceiling Diffuser


■

■

■

■

■

■

■

■

CAC Physical Dimension Unit:mm

C - Neck Size200250300350

A - Duct Size210260310360

B - Diffusing Size

400

455

D - Face Size H - Height

■ CAC Product Specification Unit:mm


CAC-T

CAC-P

0.6 SPGC Steel

ABS Plastic

Baked White Powder Coat

White

AccessoriesC1 Radial FanBlade Damper

C2 Crown Damper

Standard Sizes200ø250ø300ø350ø

Order KeyCAC - T + C1 - 200

ModelMaterials


603 x 603 79

CAC page 1 of 2

CEILING DIFFUSERS

CAC Round Neck • The CAC round neck diffuser is fixed to 2x2 ceiling to provice easy installation to round outlet.

CAC Ceiling Diffuser


n

CAC + C1 Radial Fan Blade Damper• The C1 radial fan blade damper is a volume control adjustable from below by means of key or screw driver.

• Mould pressed, 0.6mm thick galvanized steel with matt blade as standard finish.

• Height for CAC + C1 = 79mm.

n

n CAC Performance DataNeck Size mmNeck Area m2

200(0.0324)

250(0.0507)

300(0.0731)

350(0.979)

CMHTot. Press(mmAq)

Throw(M)NC

CMHTot. Press(mmAq)

Throw(M)NC

CMHTot. Press(mmAq)

Throw(M)NC

CMHTot. Press(mmAq)

Throw(M)NC

3501.9

0.8 - 1.8-

5482.0

1.3 - 2.2227902.1

1.6 - 2.823

10572.1

1.8 - 3.123

5253.1

1.5 - 2.8288203.3

2.3 - 3.530

11583.5

2.5 - 4.132

15853.4

2.8 - 4.831

4082.2

1.0 - 2.2226402.2

1.6 - 2.6269202.3

1.9 - 3.328

12342.3

2.1 - 3.626

4672.4

1.2 - 2.5267302.4

2.2 - 3.028

10522.6

2.3 - 3.629

14102.5

2.5 - 4.227

5833.7

1.8 - 3.0329134.0

2.4 - 4.035

13154.2

2.8 - 4.736

17624.1

3.4 - 5.436

2921.5

0.7 - 1.6-

4561.6

0.9 - 1.8-

6581.7

1.3 - 2.4-

8811.7

1.6 - 2.6-

2331.0

0.6 - 1.0-

3651.0

0.6 - -1.3-

5261.1

0.8 - 1.8-

7051.1

1.2 - 2.0-

•Throw is based on terminal velocities of 0.5 m/s - 0.25 m/s respectively.•NC value is based on a room absorption of 10 dB, re 10-12 watts.•Dash (-) in space indicates NC value less than 20.

CAC page 2 of 2

Neck Vel. (m/s) 3 4.53.5 4 52.52

CEILING DIFFUSERS

Materials• CAC 2-T: SPGC galvanized steel, mould pressed.• CAC 2-A: aluminum, mould pressed.

Surface Finish• Baked white powder coat as standard.

Features• Face size is 603mm X 603mm or 595mm x 595mm designed for T-bar ceiling mounting.• Round diffuser: each diffusing cone is mould pressed, no welding joint.

Accessories• C1 Radial fan blade damper.

Standard Sizes• 200ø, 250ø, 300ø, 350ø (mm)

CAC 2 Construction Illustrations

CAC 2 Ceiling Diffuser


■

■

■

■

■

■

■

CAC 2 Physical Dimension Unit:mm

C - Neck Size150200250300

■ CAC 2 Product Specification Unit:mm


CAC 2-T

CAC 2-A

SPGC Steel

Aluminium



Accessories

C1 Radial FanBlade Damper

Standard Sizes150ø200ø250ø300ø

Order KeyCAC 2 - T + C1 - 200

ModelMaterials


CAC 2 page 1 of 2

A - Face Size

595 x 595or

603 x 603

H125135145145

E80808080

T20202020

N40404040

CEILING DIFFUSERS

CAC 2 C/W C3 Quide Vanes Round Neck

CAC 2 Ceiling Diffuser


■ CAC 2 + C1 Radial Fan Blade Damper• The C1 radial fan blade damper is a volume control adjustable from below by means of key or screw driver.

• Mould pressed galvanized steel with matt black as standard finish.

■

■ CAC 2 Performance Data

CAC 2 page 2 of 2

Flexible Air Duct

Neck Size mm Neck Area m2

150(0.0181)

200(0.0320)

250(0.0499)

300(0.0716)

CMHTot. Press(mmAq)

Radius of Diff(M)

CMHTot. Press(mmAq)

Radius of Diff(M)

CMHTot. Press(mmAq)

Radius of Diff(M)

CMHTot. Press(mmAq)

Radius of Diff(M)

1310.20.50.61.1--

2310.20.50.91.3--

3590.20.51

1.6--

5150.20.51.22--

HVHVHV

HVHVHV

HVHVHV

HVHVHV

• Radius of diffusion based on terminal velocities of 0.5 m/s-0.25 m/s respectively.• NC value is based on a room absorption of 10 dB, re 10-12 watts.• Dash (-) in space indicates NC value less than 20.

1630.30.80.71.4--

2880.30.81

1.6--

4480.30.81.22.1--

6440.30.81.42.5--

2610.921

2.330304610.92

1.42.731337180.92

1.73.43334

10310.922

4.13336

1960.51.20.81.7-

213460.51.21.2221235380.51.21.42.523257730.51.21.632427

2280.71.60.9226264030.71.61.32.327296280.71.61.5329309020.71.61.83.62932

2941.12.61.12.734345191.12.61.5335368071.12.61.83.83638

11591.12.62.14.63739

3922.14.61.33.640426922.14.61.94.14345

10762.14.62.25.14346

15462.14.62.66.24447

3261.43.21.2336365761.43.21.73.438408971.43.22

4.33940

12881.43.22.35.23942

NC

NC

NC

NC

Neck Vel. (m/s) 3 4.53.5 4 5 62.52

BC

ED

H

CEILING DIFFUSERS

Materials• CP-T: 0.8mm galvanized steel.

Surface Finish • CP-T: white powder coat, oven baked as standard.

Accessories• C3 Deflector guide vane.• C3 Deflector guide vane can be connected to the round neck of CP-A.

Standard Sizes• 150ø, 200ø, 250ø, 300ø(mm)

CP Construction Illustrations

CP Plate Type Round Diffuser


n

n

n

n

n

n

CP Physical Dimension Unit:mm

max37444444

n CP Product Specification Unit:mm

Model

CP-T

Materials

0.8 Galvanized Steel

Surface Finish


Accessories

C3 DeflectorGuide Vane

Standard Sizes

150ø200ø250ø300ø

Order KeyCP - A + C1 - 250

Model

Materials

Accessories

Neck Size

CP page 1 of 2

min21282828

H

200310310310

335460460460

310410410410

EDB

150200250300

C

150200250300

Model

CEILING DIFFUSERS

CP + C3 Deflector Guide Vane• C3 deflector guide vane consists of a splitter damper & equalizing deflector & thus serve as even air distribution & volume control.

• Constructed of 0.6mm galvanized steel & matt black as standard finish.

CP Plate Type Round Diffuser


n

n CP Performance DataNeck Size mmNeck Area m2

150(0.0182)

200(0.0324)

250(0.0507)

300(0.0731)

CMHTot. Press(mmAq)

Throw(M)NC

CMHTot. Press(mmAq)

Throw(M)NC

CMHTot. Press(mmAq)

Throw(M)NC

CMHTot. Press(mmAq)

Throw(M)NC

2623.1

4.8 - 6.8224672.6

6.5 - 9.1217302.5

8.0 - 11.4-

10522.3

9.7 - 13.5-

4609.1

8.6 - 11.8368167.8

11.2 - 15.936

12807.2

14.2 - 19.135

18426.8

17.0 - 24.034

3284.5

6.0 - 8.5295833.9

8.0 - 11.2279133.6

10.2 - 14.125

13153.4

12.2 - 17.124

3936.8

7.0 - 10.0327005.5

9.5 - 13.532

10955.2

12.2 - 17.231

15805.1

14.5 - 20.130

52511.5

9.9 - 13.54193310.2

13.0 - 18.240

14609.4

16.1 - 22.039

21059.0

19.2 - 26.838

1961.8

3.7 - 5.1-

3501.5

4.7 - 6.8-

5481.5

6.0 - 8.5-

7901.4

7.2 - 10.2-

1301.3

2.4 - 3.1-

2331.2

3.6 - 5.0-

3651.2

4.8 - 6.8-

5261.1

6.0 - 8.2-

•Throw is based on terminal velocities of 0.5 m/s-0.25 m/s respectively.•NC value is based on a room absorption of 8 dB, re 10-12 watts.•Dash (-) in space indicates NC value less than 20.

Neck Vel. (m/s) 4 75 6 832

CP page 2 of 2

CEILING DIFFUSERS

Materials• PDC-A: 1.0mm extruded aluminum and 1.0mm aluminum perforated face.• PDC-T: 0.8mm galvanized steel and 0.8mm galvanized steel perforated face.

Surface Finish• Baked white powder coat.• Square to round adapter - matt black or E.G finished.• Diffuser face is perforated with round openings. For uniformity, this diffuser series has both supply air & return air. • The perforated face is removable by unlocking the spring hatch for easy adjustment of pattern deflectors.• The 4 pieces of pattern deflector can adjust the flow pattern to 1, 2, 3 or 4 way. (optional)• Model PDC, face size is 603mm X 603mm suitable for T-Bar mounting.

Standard Sizes• 200ø, 250ø, 300ø, 350ø, 400ø(mm)

PD & PDC Construction Illustrations

PD & PDC Perforated Face Diffuser


n

n

n

n

n

PD Physical Dimension Unit:mm

C - Neck Size200250300350

A - Duct Size380 x 380380 x 380480 x 480480 x 480

B - Ceiling Size400 x 400400 x 400500 x 500500 x 500

D - Face Size460 x 460460 x 460560 x 560560 x 560

H - Height80808080

C - Neck Size200250300350

A - Duct Size B - Ceiling Size D - Face Size H - Height

540 x 540 545 603 x 603 80

n PDC Product Specification Unit:mm

PD & PDC page 1 of 3

Enlargement of Removable Mechanism Removable Type (Optional)

CEILING DIFFUSERS

• For model PD & PDC, the four pieces of deflector can adjust the flow pattern to 1, 2, 3 or 4 way.(Optional)• The perforated face is removable by unlocking the spring for easy adjustment of flow pattern.



n PDC Performance DataNeck Size mmNeck Area m2

200(0.0324)

250(0.0507)

300(0.0731)

350(0.0979)

400(0.1297)

Neck Vel. (m/s)Vel. Press (mmAq)

CMHTot. Press (mmAq)

NC


NC


NC


NC


NC

Throw(m)

Throw(m)

Throw(m)

Throw(m)

Throw(m)

30.553501.626

2.2 - 4.61.6 - 3.71.1 - 2.90.5 - 1.6

5482.030

3.2 - 6.82.6 - 5.62.0 - 4.10.8 - 2.2

7902.433

4.1 - 8.63.5 - 7.12.6 - 5.21.4 - 3.2

10572.735

5.3 - 11.04.4 - 8.93.2 - 6.51.7 - 3.7

14003.435

6.2 - 9.03.2 - 4.72.9 - 4.72.6 - 3.5

4.51.255253.539

3.6 - 7.02.9 - 6.02.0 - 4.41.1 - 2.6

8204.442

5.0 - 9.73.9 - 8.42.9 - 6.01.7 - 3.7

11855.446

6.3 - 12.65.3 - 10.73.9 - 8.12.3 - 4.6

15856.350

8.1 - 16.06.6 - 13.64.7 - 10.02.9 - 6.0

21007.650

7.6 - 11.04.0 - 5.63.9 - 5.63.0 - 4.4

3.50.754082.228

2.6 - 5.62.2 - 4.61.4 - 3.20.5 - 2.0

6402.734

3.7 - 8.13.2 - 6.52.3 - 4.71.1 - 2.8

9203.338

5.0 - 9.94.1 - 8.32.8 - 6.11.7 - 3.7

12343.839

6.2 - 12.85.0 - 10.43.7 - 7.72.3 - 4.6

16354.640

6.8 - 9.53.5 - 5.03.4 - 7.02.6 - 3.7

41.04672.834

3.2 - 6.52.6 - 5.31.6 - 3.70.8 - 2.3

7303.538

4.4 - 8.93.5 - 7.52.6 - 5.31.4 - 3.2

10524.342

5.6 - 11.54.6 - 9.53.5 - 7.12.0 - 4.1

14104.945

7.1 - 14.75.8 - 11.84.1 - 8.62.6 - 5.3

18686.046

7.1 - 10.53.7 - 5.33.6 - 5.32.8 - 4.1

51.555834.442

4.1 - 7.53.2 - 6.52.3 - 5.01.4 - 3.0

9135.547

5.6 - 10.44.4 - 9.24.4 - 9.22.0 - 4.1

13156.649

7.1 - 13.55.8 - 11.94.4 - 8.92.6 - 5.2

17627.653

9.0 - 16.87.5 - 14.75.3 - 11.03.2 - 6.8

23359.454

8.1 - 11.64.2 - 5.84.2 - 5.83.2 - 4.7

2.50.42921.222

1.6 - 4.11.1 - 3.20.8 - 2.30.3 - 1.4

4561.426

2.5 - 5.62.0 - 4.41.4 - 3.20.5 - 2.0

6581.728

3.5 - 7.12.9 - 5.82.0 - 4.40.8 - 2.6

8812.031

4.4 - 8.93.5 - 5.72.6 - 5.31.4 - 3.2

11672.432

5.6 - 8.12.9 - 4.42.3 - 4.42.3 - 3.2

20.252330.7-

1.1 - 3.20.8 - 2.60.5 - 1.60.3 - 1.0

3650.921

2.0 - 4.41.4 - 3.50.8 - 0.60.3 - 1.4

5261.124

2.6 - 5.62.0 - 4.61.4 - 3.55.0 - 2.0

7051.326

3.5 - 7.12.9 - 5.82.0 - 4.10.8 - 2.6

9341.526

5.0 - 7.12.3 - 3.82.0 - 3.81.4 - 2.9






•NC value is based on a room absorption of 10 dB, re 10-12 watts.•Dash (-) in space indicates NC value less than 20.

•Ducted return data for PDC: Negative SP = Total Press. NC = Above Plus 2dB


CEILING DIFFUSERS



n Performance Data for PDC

240 x 240(0.0576)340 x 340(0.1156)440 x 440(0.1936)540 x 540(0.2916)

Neck Size mm Neck Area m2

Neck Vel. (m/s)Vel. Press (mmAq)Neg. SP. (mmAq)

CMHNC

CMHNC

CMHNC

CMHNC

30.552.8622

-125021

209022

315023

4.51.256.693329

187331

313634

472435

3.50.753.972521

145624

244026

367527

41.05.083025

166528

278829

420031

51.667.6

103732

208035

348537

525039

2.50.41.9518

-1040

-1742

-262521

20.251.3414

-832

-1394

-2100

-

•NC value is based on a room absorption of 10 dB, re 10-12 watts.•Dash (-) in space indicates NC value less than 20.

•Throw is based on terminal velocities of 0.5 m/s-0.25 m/s respectively.•NC value is based on a room absorption of 10 dB, re 10-12 watts.•Dash (-) in space indicates NC value less than 20.

•Ducted return data for PDC: Negative SP = Total Press. NC = Above Plus 2dB

n Performance Data for PD 460 X 460Neck Size mmNeck Area m2

200(0.0324)

250(0.0507)



NC


NC

Throw(m)

Throw(m)

30.553501.6-

2.2 - 4.61.6 - 3.71.1 - 2.90.5 - 1.6

5482.030

3.2 - 6.82.6 - 5.62.0 - 4.10.8 - 2.2

4.51.255253.529

3.6 - 7.02.9 - 6.02.0 - 4.41.1 - 2.6

8204.430

5.0 - 9.73.9 - 8.42.9 - 6.01.7 - 3.7

3.50.754082.223

2.6 - 5.62.2 - 4.61.4 - 3.20.5 - 2.0

6402.725

3.7 - 8.13.2 - 6.52.3 - 4.71.1 - 2.8

41.04672.826

3.2 - 6.52.6 - 5.31.6 - 3.70.8 - 2.3

7303.529

4.4 - 8.93.5 - 7.52.6 - 5.31.4 - 3.2

51.555834.333

4.1 - 7.53.2 - 6.52.3 - 5.01.4 - 3.0

9135.535

5.6 - 10.44.4 - 9.23.2 - 6.82.0 - 4.1

2.50.42921.1-

1.6 - 4.11.1 - 3.20.8 - 2.30.3 - 1.4

4561.4-

2.5 - 5.62.0 - 4.41.4 - 3.20.5 - 2.0

20.252330.7-

1.1 - 3.20.8 - 2.60.5 - 1.60.3 - 1.0

3650.9-

2.0 - 4.41.4 - 3.50.8 - 2.60.3 - 1.4



n Performance Data for PD 560 X 560Neck Size mmNeck Area m2

300(0.0731)

350(0.0979)



NC


NC

Throw(m)

Throw(m)

30.557902.430

4.1 - 8.63.5 - 7.12.6 - 5.21.4 - 3.2

10572.733

5.3 - 11.04.4 - 8.93.2 - 6.51.7 - 3.7

4.51.2511855.442

6.3 - 12.65.3 - 10.73.9 - 8.12.3 - 4.6

15856.346

8.1 - 16.06.6 - 13.64.7 - 10.02.9 - 6.0

3.50.759203.334

5.0 - 9.94.1 - 8.32.8 - 6.11.7 - 3.7

12343.836

6.2 - 12.85.0 - 10.43.7 - 7.72.3 - 4.6

41.0

10524.338

5.6 - 11.54.6 - 9.53.5 - 7.12.0 - 4.1

14104.940

7.1 - 14.75.8 - 11.84.1 - 8.62.6 - 5.3

51.5513156.646

7.1 - 13.55.8 - 11.94.4 - 8.92.6 - 5.2

17627.649

9.0 - 16.87.5 - 14.75.3 - 11.03.2 - 6.8

2.50.46581.726

3.5 - 7.12.9 - 5.82.0 - 4.40.8 - 2.6

8812.028

4.4 - 8.93.5 - 7.52.6 - 5.31.4 - 3.2

20.255261.121

2.6 - 5.62.0 - 4.61.4 - 3.50.5 - 2.0

7051.322

3.5 - 7.12.9 - 5.82.0 - 4.10.8 - 2.6




CEILING DIFFUSERS

Description

Materials• Diffuser Face: 1.0mm thickness galvanized steel.• Outer Frame: 1.0mm thickness galvanized steel.


Features• Diffuser face can be open without using any tools.• Volume control damper is adjustable without removing ceiling panel.• Swirl air pattern provides high induction ratio.• High coanda effect reduces direct-throw of air on occupants.• Standard sizes available for T-bar ceiling on metric or imperial size.

Standard Sizes• SW-2T: 595mm X 595mm, 603mmX603mm (face size).• SWR-2T: 565mm outer diameter.

Accessories• Plenum box, radial blade damper (C1) , perforated sheet (PS), round inlet adapter (D2), crown damper (C2).

SW-2T Models

SW-2T Swirl Diffuser


n

n

n

n

n

n

n

Model CodeSW-2TSW-2T + PB-SSW-2T + PB-TSW-2T + D2 + C1SWR-2TSWR-2T+ D2SWR-2T+D2+C1

DescriptionSquare swirl diffuserSW-2T with plenum box side entrySW-2T with plenum box top entrySW-2T with round inlet adapter and radial blade damperRound swirl diffuserSWR-2T with round inlet adapterSWR-2T with round inlet adapter and radial blade damper

ASLI SW-2T series is a type of diffuser with fixed radially arranged air control blades. This unique type of slots provide high induction “vortex” air flow projecting horizontally from the face of diffuser. This swirling air flow produce a diffuse air distribution, with no stationary air jet resulting excellent uniformity of temperature in air conditioned space. SW-2T is suitable in area of high heat load where large quantities of cool air must be rapidly mixed with room air; areas which require high air change in a short time. The SW-2T series can also be use as a return and exhaust type device.

•Other models are available upon request

SW-2T page 1 of 4

CEILING DIFFUSERS

SW-2T Construction Illustrations



n

n

SW-2T Physical Dimension Unit:mm

C150200250300

CHAHILPLPH

153 178*

RHHRICOCI

60100755414049565190515535

D

603595

ID150200250300

• PH = 178 when ID = 300

Top View SW-2T

SWR-2T

Side View

Top View Side View

SW-2T+PB (Side View) SW-2T+D2 (Side View)

No.of blades=29

Ovel InletNominal InletDiameter, ID

Top Round Inlet ID

SW-2T page 2 of 4

CEILING DIFFUSERS




n

Isometric Top View Isometric Back View

Isometric Top View Isometric Back View

SW-2T+PB-S (Isometric Back View) SW-2T+D2+C1 (Isometric Back View)

SW-2T+PB-S in open position SW-2T+D2+C1 in open position

SW-2T

SWR-2T

Perforated Sheet (Optional)

Perforated Sheet (Optional)

Blades

Outer Frame

Diffuser Face

Diffuser Face

Blade

Plenum Box (PB)Radial Blade Damper (C1)

Round Inlet Adapter (D2)

Inlet Collar

Butterfly Damper

Collar

Collar

LockingMechanism

Outer Frame

SW-2T page 3 of 4

CEILING DIFFUSERS



n SW-2T Order Code

n

Tot. PressNC

Throw

C1X 1.2+ 2

X 0.9

PBX 1.2+ 2

X 0.85

ModelSW-2T

SWR-2T

CasingPlenum Box (PB)

Adapter (D2)

AccessoriesRadial Blade Damper (C1)

Perforated Sheet (PS)

• Throw is based on terminal velocities of 0.5m/s and 0.25m/s respectively.• Throw is based on isothermal condition.• NC value is based on room absorption of 10dB, re 10-12 watts.• Dash (-) in space indicates NC value less than 20.• The above performance data is applicable for SW-2T + D2 and SWR-2T + D2.• Apply the following factor for C1 and PB.

n SW-2T Air Flow Performance DataInlet Diameter

(mm)

150

200

250

300

1.50.2970.3-

0.6 ~ 1.21720.4-

0.6 ~ 1.22690.6-

0.9 ~ 1.83881.3-

1.2 ~ 2.4

2.00.31290.6-

0.9 ~ 1.52300.7-

0.9 ~ 1.53591.1-

1.2 ~ 2.45172.324

1.5 ~ 3.0

2.50.41610.9-

0.9 ~ 1.82871.2-

0.9 ~ 2.14491.721

1.5 ~ 2.76463.530

1.8 ~ 3.4

3.00.61941.2-

1.2 ~ 1.83441.721

1.2 ~ 2.15382.928

1.8 ~ 3.07755.138

2.4 ~ 4.0

3.50.82231.7-

1.5 ~ 2.13962.327

1.5 ~ 2.46193.934

2.1 ~ 3.48916.841

2.7 ~ 4.3

4.01.02542.2-

1.5 ~ 2.14523.031

1.5 ~ 2.77074.936

2.4 ~ 3.710189.044

3.0 ~ 4.6

4.51.32862.723

1.5 ~ 2.45093.735

1.8 ~ 2.77956.140

2.7 ~ 4.0114511.347

3.4 ~ 4.6

5.01.63183.226

1.8 ~ 2.45654.838

2.1 ~ 3.08847.642

2.7 ~ 4.0127214.149

3.7 ~ 4.9

5.51.93503.930

1.8 ~ 2.76225.540

2.1 ~ 3.09729.144

3.0 ~ 4.3140017.051

3.7 ~ 5.2

6.02.33824.833

1.8 ~ 2.76796.541

2.1 ~ 3.4106010.846

3.0 ~ 4.3152721.454

3.9 ~ 5.5

Collar Neck Vel. (m/s)Vel. Press (mmAq)


NCThrow (m)


NCThrow (m)


NCThrow (m)


NCThrow (m)

SW-2T Suggested SpecificationSW-2T Swirl Diffuser shall have a removable one piece stamped face of 1.0mm thickness galvanized steel containing a circular round pattern of blades. The diffuser face shall contain 29 pieces of blades. The interior of the face shall contain a steel collar bordering the ends of the blades. The steel collar shall be securely welded to the rear of the diffuser face. The diffuser face shall be removable without using any tools from the diffuser face. The diffuser face shall contain two steel rods at the corner to be slotted into the round rubber sleeve at the frame when the diffuser face is closed. The diffuser face shall rotate in one axis and remain attached to the frame when the diffuser face is fully open. The diffuser shall come with round perforated sheet at the steel collar. The diffuser shall be epoxy coated and furnished to architectural requirement.

Example: SW-2T + D2 + C1 + PS

SW-2T page 4 of 4

CEILING DIFFUSERS

Description

Materials• 1.0 mm galvanized steel.


Features• Air delivered horizontally with cyclone characteristic.• Low sound level at high air volume.• The blades and the opening area are in curved profile.• The diffuser face plate is removable.


SW-3T Curve-Blade Swirl Diffuser


n

n

n

n

nSW-3T series of curve-blade swirl diffuser is a diffuser with fixed radially arranged curved air control blades. The curve profile of the blades and opening allow the air to be delivered horizontally with cyclone characteristic, which provide better induction "vortex" air flow than normal straight profile swirl diffuser. Room temperature and air velocity will be reduced effectively to achieve excellent uniformity of temperature in a comfort air-conditioned space. It can be used as supply or return air device.

SW-3T page 1 of 2

CEILING DIFFUSERS

SW-3T Order Code

SW-3T Curve-Blade Swirl Diffuser


n

SW-3T

ModelFace Size,Q (mm)

598 / 603

Plenum Box,Height (mm)

PB 200

Vertical Inlet (V)Horizontal Inlet (H)

V

Inlet Size(mm)250

SW-3T page 2 of 2

Tot. PressNC

Throw

C1X 1.2+2

X 0.9

PBX 1.2+2

X 0.85

• Throw is based on terminal velocities of 0.5m/s and 0.25m/s respectively.• Throw is based on isothermal condition.• NC value is based on room absorption of 10dB, re 10-12 watts.• Dash (-) in space indicates NC value less than 20.• The above performance data is applicable for SW-3T + D2.• Apply the following factor for C1 and PB.

n SW-3T Air Flow Performance DataInlet Diameter

(mm)

150

200

250

300

1.51.5970.3-

0.7 - 1.31720.4-

0.7 - 1.32690.7-

1.0 - 2.03881.5-

1.3 - 2.6

2.02.51290.6-

1.0 - 1.72300.8-

1.0 - 1.73591.2-

1.3 - 2.65172.625

1.7 - 3.3

2.54.01611.0-

1.0 - 2.02871.3-

1.0 - 2.34491.922

1.7 - 3.06463.831

2.0 - 3.7

3.05.51941.4-

1.3 - 2.03441.922

1.3 - 2.35383.129

2.0 -3.37755.639

2.6 - 4.4

3.57.72231.9-

1.7 - 2.33962.628

1.7 - 2.66194.335

2.3 - 3.78917.542

3.0 - 4.7

4.010.02542.4-

1.7 - 2.34523.332

1.7 - 3.07075.437

2.6 - 4.110189.945

3.3 - 5.1

4.512.72863.024

1.7 - 2.65094.036

2.0 - 3.07956.741

3.0 - 4.4114512.548

3.7 - 5.1

5.015.43183.527

2.0 - 2.65655.339

2.3 - 3.38848.343

3.0 - 4.4127215.550

4.1 - 4.7

5.518.73504.331

2.0 - 3.06226.141

2.3 - 3.397210.045

3.3 - 4.7140018.752

4.1 - 5.7

6.022.43825.334

2.0 - 3.06797.242

2.3 - 3.7106011.947

3.3 - 4.7152723.655

4.3 - 6.1

Collar Neck Vel. (m/s)Vel. Press (mmAq)


NCThrow (m)


NCThrow (m)


NCThrow (m)


NCThrow (m)

CEILING DIFFUSERS

SLLS Linear Ceiling Diffuser

n

n

n

n

n


Materials• SLLS extruded aluminium A6063.

Surface Finish • Baked white powder coat as standard. • Pattern controller vane is black anodised.

Features • SLLS linear ceiling diffuser can be used in T-bar ceiling suspension system & other ceiling types as well. • The diffuser incorporates curved blade pattern controller for adjustable of air distribution. • Available in 1 slot to 6 slots. • Linear diffusers that come with plenum boxes are known as SLLSB. • Model SLLS-1 has a 90˚ mitred corner connection & model SLLS-2 is 45˚. • Approximately 38% free area when blades are fully open.

Standard Sizes• 600(2'), 1200(4').

SLLS Construction Illustrations

n SLLS Physical Dimension Unit:mm

Thickness WNeck Size

4893138183228273

1 Slot2 Slot3 Slot4 Slot5 Slot6 Slot

DFace Size

L+37W+37

Frame BladeOrder Key

SLLS - 1 - 2 - 100

Model90˚

No. of Slot

Length

Materials

Extruded Aluminium A6063

Model

1.0 0.8

BCeiling Size

L+15W+15

ADuct Size

L+10W+10

SLLS page 1 of 8

CEILING DIFFUSERS


n


SLLS Frame Details

n SLLS Air Distribution Adjustment

L

s

w

H

Model SLLSB: SLLS Linear Diffuser c/w Plenum Box• Plenum box is constructed of 0.5mm SPGC galvanized steel.• Two types of insulation are available.• External insulation: 25mm X 24kg/m2 fiberglass wrapped with fiber-reinforced aluminium foil.(Optional)• Internal insulation: 5mm thick PE foam.

SLLS page 2 of 8

CEILING DIFFUSERS



■ SLLS Physical Dimension Unit:mm

LLength of Plenum Box

Face length of slot diffuser

WWidth of Plenum Box

Neck width of slot diffuser W + 20 230 100ø ~ 300ø oval shape

HHeight of Plenum Box

SInlet Size

Model SLL & Plenum Box Installation • SLL linear supply air diffusers have a U-type fastening hook & an adjustable screws for installing the diffuser onto the plenum box. • For installation, one can install the diffuser together with the plenum box. However for some application, one can fix the box onto the ceiling, then use the U-type fastening hook to fasten the diffuser to the plenum box. Use the screw to adjust the face flush with the ceiling.

■ SLLS (Supply) Performance Data

No. of Slot

1 Slot

2 Slot

3 Slot

4 Slot

5 Slot

6 Slot

Neck Vel. (m/s) St. Press. (mmAq)

CMH NC

CMH NC

CMH NC

CMH NC

CMH NC

CMH NC

HV

HV

HV

HV

HV

HV

Throw (M)

Throw (M)

Throw (M)

Throw (M)

Throw (M)

Throw (M)

1.12.322426

5.8 - 8.24.644929

8.2 - 11.66.767330

10.1 - 14.08.289832

11.6 - 16.59.4

112233

12.8 - 18.310.4134634

14.0 - 20.111.6

1.85.836037

7.3 - 10.45.872140

10.4 - 14.68.5

107442

12.8 - 18.010.4143543

14.6 - 20.711.9179544

16.5 - 23.213.1215645

18.0 - 25.314.6

1.33.327230

6.4 - 8.85.253733

8.8 - 12.87.380935

11.0 - 15.58.8

107436

12.8 - 18.010.4134637

14.0 - 20.111.6161838

15.5 - 21.912.5

1.64.431334

6.7 - 9.85.562637

9.8 - 13.77.994539

11.9 - 16.89.8

125840

13.7 - 19.211

157141

15.2 - 21.612.5188442

16.8 - 23.813.7

2.07.340140

7.6 - 11.06.180943

11.0 - 15.59.1

121045

13.4 - 18.911

161846

15.5 - 21.912.8202047

17.4 - 24.413.7242148

18.9 - 26.815.5

0.91.417720

4.9 - 7.34.336023

7.0 - 10.75.853725

8.5 - 12.87.372126

10.1 - 14.68.589827

11.0 - 16.59.4

107429

12.2 - 18.010.4

0.70.813613

3.7 - 6.43.727216

5.2 - 8.84.940118

6.4 - 11.06.153719

7.3 - 12.87

67320

8.2 - 14.07.680922

9.1 - 15.58.5

0.40.488-

1.8 - 4.92.4177

-3.7 - 7.0

3.4272

-4.3 - 8.5

4360

-4.9 - 10.1

4.6449

-5.5 - 11.0

5.253712

6.1 - 12.25.8

0.20.148-

0.6 - 1.80.688-

0.9 - 3.71.5136

-1.5 - 4.3

2.1177

-1.8 - 4.9

2.4224

-2.4 - 5.5

2.7272

-3.0 - 6.1

2.7

SLLS page 3 of 8

CEILING DIFFUSERS



n SLLS (Return) Performance Data2.83402468027

102029

136030

170028

204029

7.254537

108540

163042

217543

272041

326442

4.14052981531

122534

163035

204033

244834

5.54753395036

142538

190539

238037

285638

11.568043

136046

204048

272049

340047

408048

1.8270

-5452281524

108524

136022

163223

1.0200

-405

-610

-815

-1020

-1224

-

0.5135

-270

-405

-545

-680

-1224

-

Neg. SP (mmAq)CMHNC

CMHNC

CMHNC

CMHNC

CMHNC

CMHNC

No. of Slots

1 Slot

2 Slot

3 Slot

4 Slot

5 Slot

6 Slot

NC correction for various diffuser lengths

2.4+3+5

• Throw values are based on an entire section 1.2 meter long.• Vertical throw is based on terminal velocity of 0.25m/s.• Horizontal throw is based on terminal velocities of 0.5m/s – 0.25m/s respectively.• NC value is based on a room absorption of 10 dB, re 10-12 watts.• Dash (-) in space indicates NC value less than 20.• Performance data are obtain based on isothermal condition.

1.200

0.6-3-3

Length (m)Supply NCReturn NC

Throw correction multiplier for length

2.41.5

1.21.0

0.60.7

LengthThrow Correction

SLLS page 4 of 8

CEILING DIFFUSERS



n SLLSB Performance Data

1021.426

3.4 - 4.61531.425

2.7 - 4.61111.924

4.3 - 8.21701.123

3.0 - 4.91193.423

4.6 - 8.52041.425

3.7 - 5.22382.525

4.0 - 5.5

1794.538

4.3 - 6.12694.238

4.3 - 6.12016.338

7.9 - 11.32983.437

4.6 - 6.41969.235

7.6 - 11.03574.438

4.9 - 7.04177.738

5.2 - 7.3

1282.331

3.7 - 5.21922.130

3.7 - 5.21413.129

5.5 - 9.42131.729

3.7 - 5.21455.127

5.8 - 9.42552.230

4.0 - 5.82983.930

4.6 - 6.4

1533.335

4.0 - 5.52303.135

4.0 - 5.51704.534

6.7 - 10.42552.533

4.0 - 5.81707.031

6.7 - 10.43063.235

4.6 - 6.43575.734

4.9 - 7.0

2045.842

4.6 - 6.43065.541

4.6 - 6.42308.341

8.5 - 11.93404.440

4.9 - 6.722111.837

8.2 - 11.94085.741

5.2 - 7.347610.141

5.5 - 7.9

770.8-

2.7 - 4.01160.8-

2.1 - 4.0821.0-

3.0 - 6.41280.6-

2.4 - 4.0942.1-

3.7 - 7.31530.8-

2.7 - 4.61791.4-

3.4 - 4.9

510.4-

1.8 - 3.4770.3-

0.6 - 2.7510.4-

1.5 - 4.0850.3-

1.5 - 3.0681.1-

2.4 - 5.21020.4-

1.8 - 3.71190.6-

2.1- 4.0

Length(mm)

600

1200

600

1200

600

1200

1200

RoundInlet (mm)

No. ofSlot

150

200

250

1

1

1

3001


NCThrow (m)


NCThrow (m)


NCThrow (m)


NCThrow (m)


NCThrow (m)


NCThrow (m)


NCThrow (m)

SLLS page 5 of 8

• Throw is based on terminal velocities of 0.5m/s – 0.25m/s respectively.• NC value is based on a room absorption of 10 dB, re 10-12 watts.• Dash (-) in space indicates NC value less than 20.• Performance data are obtain based on isothermal condition.

CEILING DIFFUSERS




1451.224

4.0 - 7.92302.024

3.0 - 5.51701.123

4.6 - 9.42721.424

3.7 - 6.12041.425

5.5 - 11.33231.425

4.3 - 6.43741.325

4.9 - 7.0

2603.937

7.0 - 12.83965.937

5.2 - 7.32983.437

8.2 - 13.74513.936

8.5 - 7.63574.438

9.8 - 14.95534.038

6.1 - 8.54593.637

6.4 - 9.1

1842.029

5.2 - 10.12863.029

3.7 - 6.12131.729

5. 8 - 11.63322.129

4.3 - 6.72552.230

7.0 - 12.84002.130

5.2 - 6.44591.929

5.5 - 7.9

2212.834

6.1 - 11.93404.333

4.6 - 6.72552.533

7.0 - 12.83912.933

5.2 - 7.33063.235

8.5 - 14.04762.934

5.5 - 7.95442.733

6.1 - 8.5

2985.241

8.2 - 13.74517.640

5.5 - 7.63404.440

9.4 - 14.65104.939

5.8 - 8.24085.741

11.3 - 16.26295.241

6.4 - 9.17144.640

7.0 - 9.8

1070.7-

2.1 - 5.81751.1-

2.1 - 4.61280.6-

3.0 - 7.02130.9-

2.7 - 5.21530.8-

4.3 - 8.52470.8-

3.4 - 5.82890.8-

3.7 - 6.1

680.3-

0.9 - 3.71190.5-

0.9 - 3.0850.3-

1.5 - 4.61530.5-

1.5 - 4.01020.4-

2.1 - 5.51700.4-

2.1 - 4.62040.4-

2.7 - 5.2

Length(mm)

600

1200

600

1200

600

1200

1200

RoundInlet (mm)

No. ofSlot

150

200

250

2

2

2

3002


NCThrow (m)


NCThrow (m)


NCThrow (m)


NCThrow (m)


NCThrow (m)


NCThrow (m)


NCThrow (m)

SLLS page 6 of 8


CEILING DIFFUSERS




1871.523

3.7 - 8.52812.622

3.0 - 6.12211.223

4.9 - 10.13571.924

3.7 - 7.02551.224

5.8 - 11.64001.524

4.3 - 7.34761.224

5.2 - 7.9

3154.336

7.0 - 14.04596.934

4.9 - 7.94254.339

9.4 - 16.56386.138

6.4 - 9.14343.437

9.8 - 16.56944.537

6.7 - 9.48083.537

7.3 - 10.4

2302.328

5.2 - 10.43403.827

3.7 - 6.72892.030

6.4 - 13.14513.030

4.9 - 7.63151.829

7.0 - 14.04982.329

5.2 - 8.25871.829

6.1 - 8.8

2723.232

6.1 - 12.24005.231

4.3 - 7.33573.135

7.9 - 14.95444.434

5.8 - 8.53742.533

8.5 - 15.25953.434

6.4 - 8.86972.633

6.7 - 9.4

3575.639

7.9 - 14.95198.837

5.5 - 8.24935.842

11.0 - 17.77318.041

7.0 - 9.84934.440

11.0 - 17.17915.940

7.3 - 10.49184.540

7.9 - 11.0

1450.9-

2.1 - 6.42211.6-

1.8 - 4.61530.6-

2.4 - 7.02641.0-

2.7 - 5.51960.7-

4.0 - 8.83030.9-

3.4 - 6.43660.7-

4.0 - 7.0

1020.5-

1.2 - 4.61620.8-

0.9 - 3.4850.2-

0.9 - 3.01700.4-

1.2 - 3.71360.3-

1.8 - 6.12040.4-

1.5 - 4.32550.4-

2.4 - 5.5

Length(mm)

600

1200

600

1200

600

1200

1200

RoundInlet (mm)

No. ofSlot

150

200

250

3

3

3

3003


NCThrow (m)


NCThrow (m)


NCThrow (m)


NCThrow (m)


NCThrow (m)


NCThrow (m)


NCThrow (m)

SLLS page 7 of 8


CEILING DIFFUSERS




2301.924

3.7 ~ 8.93573.924

3.1 ~ 6.82551.222

4.6 ~ 10.24422.725

4.0 ~ 7.73151.325

4.6 ~ 8.04931.925

4.6 ~ 8.05781.324

5.2 ~ 8.9

3965.937

7.7 ~ 15.760010.936

5.6 ~ 8.94854.538

9.6 ~ 17.67487.437

7.1 ~ 10.25323.737

7.4 ~ 10.58255.537

7.4 ~ 10.59613.836

8.0 ~ 11.4

2863.129

5.6 ~ 11.14395.829

4.0 ~ 7.73322.029

6.5 ~ 13.05444.030

4.9 ~ 8.63881.930

5.6 ~ 8.96043.030

5.6 ~ 8.97062.029

6.5 ~ 9.9

3404.433

6.8 ~ 13.65198.233

4.9 ~ 8.34083.234

8.0 ~ 16.06465.534

6.2 ~ 9.34592.834

6.8 ~ 9.97144.134

6.8 ~ 9.98332.933

7.4 ~ 10.5

4517.740

8.9 ~ 17.068014.039

6.5 ~ 9.65615.941

11.1 ~ 19.18509.740

7.7 ~ 10.86044.840

8.0 ~ 11.19357.040

8.0 ~ 11.110884.839

8.6 ~ 12.0

1751.1-

2.2 ~ 6.82772.3-

1.9 ~ 5.21790.6-

2.2 ~ 7.13401.5-

2.8 ~ 6.52430.7-

3.7 ~ 7.13831.1-

3.7 ~ 7.14510.8-

4.3 ~ 7.7

1190.5-

0.9 ~ 4.01961.1-

0.9 ~ 3.71020.2-

0.6 ~ 2.82380.7-

1.5 ~ 4.31700.4-

1.9 ~ 4.92720.6-

1.9 ~ 4.93230.4-

2.5 ~ 6.2

Length(mm)

600

1200

600

1200

600

1200

1200

RoundInlet (mm)

No. ofSlot

150

200

250

4

4

4

3004


NCThrow (m)


NCThrow (m)


NCThrow (m)


NCThrow (m)


NCThrow (m)


NCThrow (m)


NCThrow (m)

SLLS page 8 of 8


CEILING DIFFUSERS

Description

Materials

Surface Finish• Mill galvanized on body.• Matt black on the slot diffuser face.

Features• Custom manufactured to fit all air handling light fixtures.• Volume control damper at the inlet to control air volume.• Air pattern adjustable from horizontal to vertical through deflectors.• Oval and round inlet available.• Supply or return air application.• Internal insulation.

Standard Models• Single sided/side inlet (LTD-S-S)• Double sided/side inlet (LTD-D-S)• Double sided/top inlet (LTD-D-T)

Standard Nominal Inlet Diameter• Top round/oval inlet nominal diameter: 100, 125, 150, 200 (mm)• Side oval inlet nominal diameter: 100, 125, 150, 200 (mm)

LTD Construction Illustrations

LTD Light Troffer


■

■

■

■

■

■

■

Optional0.7mm Galvanized Steel

Extruded AluminumFiberglass

Standard0.5mm Galvanized Steel0.5mm Galvanized Steel

PE foam

PartCasingBlade

Insulation

ASLI Light Troffer Diffusers (LTD) are designed to fit virtually any available light fixture with air diffuser capabilities. The coordination of air distribution and lighting into a single, efficient ceiling unit, giving a pleasing appearance. The LTD deflectors direct the supply air away from the light fitting as to prevent condensation. LTD are excellent for VAV system as they have high induction ratio and strong horizontal air pattern. Standard features include volume damper and locking tabs to hold the diffuser to the light fixture.

ButterflyDamper

Adjustable Blade

Oval Inlet,Nominal Diameter, ID

Internal Insulation

SECTION A-ASCALE 1:10

DETAIL BSCALE 1:3

LTD page 1 of 4

CEILING DIFFUSERS

LTD Light Troffer Diffuser


n Performance Data for LTD

Inlet Size (mm)50

2.4-3.01.2-1.8

1.81.5--

1.21.1--

0.90.7--

CMHHVHVHVHVHVHVHV

•Throw is based on terminal velocities of 0.5m/s and 0.25m/s respectively.•NC value is based on room absorption of 10dB, re 10 -12 watts.•Dash (-) indicates NC less than 20.•H indicates horizontal throw, V indicates vertical throw.

602.7-3.31.5-2.1

2.52.0--

1.71.4--

1.21.0--

853.3-4.51.8-2.4

5.14.327263.63.022222.52.1--

652.7-3.91.5-2.1

3.22.720-

2.31.9--

1.61.3--

753.0-4.21.5-2.4

4.13.423222.92.4--

2.01.7--

1003.6-4.81.8-2.7

7.36.032315.14.226263.63.02222

1353.9-5.72.1-3.012.910.739389.07.534346.35.23030

1203.9-5.42.1-2.7

9.98.235347.05.831304.94.02626

NC

NC

NC

Throw (m)

100

125

150

LTD-S-S (1200mm)

LTD-S-S (600mm)

Inlet Size (mm)

Tot. Press.(mmAq)

Tot. Press.(mmAq)

Tot. Press.(mmAq)

Tot. Press.(mmAq)

851.2-2.01.2-1.5

1.51.3--

1.10.9--

0.90.9--

0.80.7--

CMHHVHVHVHVHVHVHVHVHV

1001.5-2.41.2-1.8

2.11.822211.51.4--

1.31.1--

1.00.9--

1502.1-2.81.5-2.4

4.84.332313.43.028273.02.626252.62.02423

1201.8-2.41.2-1.8

2.92.625242.11.821201.81.5--

1.51.3--

1351.8-2.71.5-2.0

3.83.329283.12.424242.32.022221.81.7--

1702.1-3.01.5-2.4

6.05.135344.33.731303.73.229283.12.72726

2352.4-3.62.1-2.611.210.245438.37.341407.36.339386.45.33837

2052.4-3.31.8-2.4

8.77.339386.15.436365.44.634334.63.63231

NC

NC

NC

NC

Throw (m)

100

125

150

200

LTD page 2 of 4

Tot. Press.(mmAq)

Tot. Press.(mmAq)

Tot. Press.(mmAq)

CEILING DIFFUSERS



n Performance Data for LTD

Inlet Size (mm)

Tot. Press.(mmAq)

Tot. Press.(mmAq)

Tot. Press.(mmAq)

851.2-2.11.2-1.5

1.61.4--

1.10.9--

0.80.7--

CMHHVHVHVHVHVHVHV

•Throw is based on terminal velocities of 0.5m/s and 0.25m/s respectively.•NC value is based on room absorption of 10dB, re 10 -12 watts.•Dash (-) indicates NC less than 20.•H indicates horizontal throw, V indicates vertical throw.

1001.5-2.41.2-1.8

2.42.221201.81.5--

1.21.0--

1502.1-3.31.5-2.4

7.96.034334.53.829283.12.72928

1201.8-2.71.5-2.1

3.53.426252.52.221201.81.52120

1352.1-3.01.5-2.1

4.84.630293.52.925242.42.02524

1702.4-3.61.8-2.4

9.79.340397.06.035344.94.23534

2052.7-3.92.1-2.714.013.74544

10.18.541397.16.04139

1902.7-3.91.8-2.711.911.143428.47.238375.95.03837

NC

NC

NC

Throw (m)

100

125

150

LTD-D-S (1200mm)

LTD-D-S (600mm)

Inlet Size (mm)

Tot. Press.(mmAq)

Tot. Press.(mmAq)

Tot. Press.(mmAq)

Tot. Press.(mmAq)

1350.6-1.20.6-0.9

4.12.227212.21.3--

1.81.0--

1.10.7--


1700.9-1.50.6-0.9

6.53.433273.52.123

2.71.7--

1.70.9--

2701.2-1.80.9-1.216.58.846409.05.437326.94.332294.32.42924

2050.9-1.50.9-1.2

9.45.038325.03.029243.92.424223.11.8--

2351.2-1.80.9-1.212.66.742378.84.133295.33.329263.41.923-

3051.5-2.10.9-1.521.411.44944

11.46.940369.05.436335.63.23228

3701.5-2.11.2-1.530.416.15549

17.110.54642

13.78.342398.65.03833

3401.5-2.10.9-1.525.913.65347

14.18.54339

11.06.739366.93.93531

NC

NC

NC

NC

Throw (m)

100

125

150

200

LTD page 3 of 4

CEILING DIFFUSERS



■ Performance Data for LTD

Inlet Size (mm)

Tot. Press.(mmAq)

Tot. Press.(mmAq)

Tot. Press.(mmAq)

851.2-2.11.2-1.5

1.41.3--

1.00.9--

0.70.6--

CMHHVHVHVHVHVHVHV

• Throw is based on terminal velocities of 0.5m/s and 0.25m/s respectively.• NC value is based on room absorption of 10dB, re 10 -12 watts.• Dash (-) indicates NC less than 20.• H indicates horizontal throw, V indicates vertical throw.

Example: LTD-D-S-200mm-O-600mmX1200mm

1001.5-2.41.2-1.8

2.22.023221.61.4--

1.11.0--

1502.1-3.31.5-2.4

7.15.436354.13.531302.92.43130

1201.8-2.71.5-2.1

3.13.128272.32.023221.61.42322

1352.1-3.01.5-2.1

4.34.232313.12.627262.21.82726

1702.4-3.61.8-2.4

8.88.442416.45.437364.53.83736

2052.7-3.92.1-2.712.812.447469.27.743416.45.44341

1902.7-3.91.8-2.710.810.145447.76.540395.44.64039

NC

NC

NC

Throw (m)

100

125

150

LTD-D-T (1200mm)

LTD-D-T (600mm)

Inlet Size (mm)

Tot. Press.(mmAq)

Tot. Press.(mmAq)

Tot. Press.(mmAq)

Tot. Press.(mmAq)

1350.6-1.20.6-0.9

3.72.028222.01.2--

1.60.9--

1.00.6--


1700.9-1.50.6-0.9

5.93.134283.11.924-

2.51.5--

1.50.9--

2701.2-1.80.9-1.215.08.047418.24.938336.33.933303.92.23025

2050.9-1.50.9-1.2

8.54.539334.62.730253.62.225232.81.6--

2351.2-1.80.9-1.211.56.143388.03.734304.83.030273.11.724-

3051.5-2.10.9-1.519.510.45045

10.46.341378.24.937345.12.93329

3701.5-2.11.2-1.527.614.65650

15.69.54743

12.57.643407.84.53934

3401.5-2.10.9-1.523.512.45448

12.87.74440

10.06.140376.33.63632

NC

NC

NC

NC

Throw (m)

100

125

150

200

■ LTD Order Code Unit:mm

Model

LTD

Nominal Inlet Diameter100mm, 125mm,150mm, 200mm

No. SidedS-SingleD-Double

Round/Oval InletO-Oval

R-Round

Width W Length L

Varies Varies

Inlet LocationS-SideT-Top

LTD page 4 of 4

CEILING DIFFUSERS ACCESSORIES

Materials• 0.6mm SPGC galvanized steel.

Surface Finish• Matt black.• The products consists of a fan type radial opposed blade damper.

Standard Sizes• 150ø, 200ø, 250ø, 300ø, 350ø (mm).



n

n

n

Materials• 0.6mm SPGC galvanized steel.

Surface Finish• Matt black.• For volume control & air equalizing.

Standard Sizes• 200ø, 250ø, 300ø, 350ø (mm).

C3 Deflector Guide Vanen

n

n

Materials• G1-T: frame 0.6mm SPGC galvanized steel.• Blade 0.5mm SPGC galvanized steel.

Surface Finish• G1-T Matt black as standard.• Maximum dimension is 500mm x 500mm damper size bigger than this will come in sections.• Gear operated, can be set at fully open, half open & fully close.

G1 Opposed Blade Dampern

n

CEILING DIFFUDER ACCESSORIES page 1 of 3

Materials• D2-T: 0.6mm SPGC galvanized steel.

Surface Finish• Matt black.

Standard Sizes• D2-T: Made to suit.

D2 Square to Round Adaptern

n

n


Materials• 0.6mm thickness galvanized steel.

Surface Finish• Matt black.

Features• Six blades can be adjusted to control the damper opening without using any tools.• Maximum effective (free) area percentage.• Low noise level.• Uniform air flow pattern.• Standard C2 installation has blades bending upwards, installation of C2 can be inverted upon request.

Standard Sizes• 150ø, 200ø, 250ø, 300ø (mm)

Construction Illustrations

C2 Crown Damper


■

■

■

■

■

■

Comparison Of Radial Blade Damper And Crown Damper


Top View Side View Fully Close Fully Open

Ceiling diffuser adapter with radial blade damper, which air flow is concentrated in the center of the diffuser.Free area is 70% when blades are fully opened.

Ceiling diffuser adapter with crown damper (C2), which air flow has been distributed to every corner of the diffuser.

Free area is 95% when blades are fully open.

Crown damper has more free area and distributes air more uniformly compare to radial blade damper. This is to ensure that the supplied air is distributed uniformly to the occupant zone and reduces noise level at the same time. Please refer to the diagrams above.

D

60


Recommended Noise Criteria for Rooms (3)



Type of AreaRange of NC

Criteria Curves

RESIDENCES Private homes (rural and suburban) 20-30 Private homes (urban ) 25-35 Apartment houses, 2-and 3-family units 30-40

HOTELS Individual rooms or suites 30-40 Ballrooms, banquet rooms 30-40 Halls and corridors, lobbies 35-45 Garages 40-50 Kitchens and laundries 40-50

HOSPITALS AND CLINICS Private rooms 25-35 Operating rooms, wards 30-40 Laboratories, halls and corridors Lobbies and waiting rooms 35-45 Washrooms and toilets 40-50

OFFICES Board room 20-30 Conference rooms 25-35 Executive office 30-40 Supervisor office, reception room 30-45 General open offices, drafting rooms 35-45 Halls and corridors 35-50 Tabulation and computation 40-60 40-50

AUDITORIUMS AND MUSIC HALLS Concert and opera halls 15-25 Studios for sound reproduction 25-30 Legitimate theaters, multi-purpose halls Movie theaters, TV audience studios Semi-outdoor amphitheaters 30-35 Lecture halls, planetarium Lobbies 35-45

Type of AreaRange of NC

Criteria Curves

CHURCHES AND SCHOOLS Sanctuaries 20-30 Libraries 30-40 Schools and classrooms 30-40 Laboratories 35-45 Recreation halls 35-50 Corridors and halls 35-50 Kitchens 40-50

PUBLIC BUILDINGS Public libraries, museums, court rooms 30-40 Post office, general banking areas, lobbies 35-45 Washrooms and toilets 40-50

RESTAURANTS, CAFETERIAS, LOUNGES Restaurants 35-45 Cocktail lounges 35-50 Night clubs 35-45 Cafeterias 40-50

STORES, RETAIL Clothing stores Department stores (upper floors) 35-45 Department stores (main floor) 40-50 Small retail stores Supermarkets 40-50

SPORTS ACTIVITIES, INDOOR Coliseums 30-40 Bowling alleys, gymnasiums 35-45 Swimming pools 35-45

TRANSPORTATION (RAIL, BUS, PLANE) Ticket sales offices 30-40 Lounges and waiting rooms 35-50

ASLI Ceiling Diffusers Set

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Transcript of ASLI Ceiling Diffusers Set