ceiling diffuser_chapter_6

CEILINGDIFFUSERS

www.airmasteremirates.com

ISO 9001 CERTIFIED COMPANY

YE

ARS OF

EXCE L L EN

CE25

Cover Page Photo

INDEX

CEILING DIFFUSERSISO 9001 CERTIFIED COMPANY

Yas Marina Circuit, Yas Island, Abu Dhabi.Airmaster has supplied for several hotels and commercial buildings in Yas Island, Abu Dhabi.

Cover Page Photo

www.airmasteremirates.com 02 Copyright reserved. Specifications subject to change without notice.

CEILINGDIFFUSERS

SECTION TOPIC PAGE

6.1 One way throw ACD1+D 3

6.2 Two way throw ACD2+D 4

6.3 Two way corner throw ACD2C+D 5

6.4 Three way throw ACD3+D 6

6.5 Four way throw ACD4+D 7

6.6 Anti Smudge ACD4+D (AS) 8

6.7 Rectangular diffuser ACD4R+D 9

6.8 Core pattern 10

6.9 Ceiling Tile Replacement diffuser ACDM 11

6.10 Combined ceiling diffuser ACCD 12

6.11 Curved Blade adjustable pattern ceiling diffuser ACBD 13

6.12 Adjustable Swirl diffuser ASD-A 15

6.13 Fixed Swirl diffuser ASD-F 16

6.14 Standard finishes, sizes, fixing details, Product Summary & Order checklist 17

6.15 Diffuser Accessories 18

AIR FLOW DATA SUPPLY AIR SQUARE CEILING DIFFUSERS 6.16 One way throw 19

6.17 Two way throw 20

6.18 Three way throw 21

6.19 Four way throw 23

RETURN AIR SQUARE CEILING DIFFUSERS 6.20 One way 24

6.21 Two way 25

6.22 Three way 26

6.23 Four way 27

6.0

Description:The frame and blades are of high qualityextuded aluminium profiled construction withthe advantages of corrosion resistance andrigidity.

Louvered type core is fixed to the framewithaluminiumpinsloadedwithsteelsprings.Corecanbeeasily removableand interchangeableto allow for maximum flexibility in installation,maintenanceanddamperadjustment.

Damperisfixedrigidlytotheframebyaluminiumrivets.Fixingbyspringclipsasoption.

Damperbladesareseparatedfromitsframebynylonbushes.

Opposedbladedamperisscrewoperatedfromthefaceopeningofthediffuserafterremovingthe internal core. Lever operated damper asoption.

Dischargesairhorizontallyinoneway,eitherXorYdirectionsasperpatternarrangement.

Foamgasket issealedaroundthebackoftheframeasoptiontoavoidairleakage.

Availableinrectangularsizesasoption.

Suitable for flush mounting in lay in typeceiling.

CEILINGDIFFUSERS

SUPPLY AIR SQUARECEILING DIFFUSER model: ACD1+D


www.airmasteremirates.comCopyright reserved. Specifications subject to change without notice. 03

CONSTRUCTION:Frame and core: High quality extrudedaluminiumprofilewith33mmflangewidth.

Damper frame and core: High qualityextruded aluminium profile with naturalaluminiumfinish.Blackmattfinishasoption.

Overall size = L + 140mm

N = Neck size = L - 5mm

L = Listed size = Duct size

False ceiling opening size = L + 80mm

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Model ACD1:Same as ACD1+D, but without opposed bladedamperandfoamgasket.Suitable forreturnairapplications.

One Way Throw

6.1






Dischargesair inboth theways,eitherXorYdirectionsasperpatternarrangement.




CEILINGDIFFUSERS


Copyright reserved. Specifications subject to change without notice.04

SUPPLY AIR SQUARE CEILING DIFFUSER model: ACD2+D

www.airmasteremirates.com







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Model ACD2:Same as ACD2+D, but without opposed bladedamperand foamgasket.Suitable for returnairapplications.





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Two Way Throw

6.2



CEILINGDIFFUSERS

SUPPLY AIR SQUARECEILING DIFFUSER model: ACD2C+D






Dischargesair inoneway,equally inXandYdirection.






Two Way Corner Throw

6.3





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Model ACD2C:SameasACD2C+D,butwithoutopposedbladedamperandfoamgasket.Suitableforreturnairapplications.





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Copyright reserved. Specifications subject to change without notice.06www.airmasteremirates.com

CEILINGDIFFUSERS







Framewithmulticoreassembly,dischargesairhorizontallyinthreedirections.






Three Way Throw

6.4





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Model ACD3:Same as ACD3+D, but without opposed bladedamperand foamgasket.Suitable for returnairapplications.





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CEILINGDIFFUSERS


CONSTRUCTION:Frame and core: High quality extruded aluminiumprofilewith33mmflangewidth.

Damper frame and core: High quality extrudedaluminium profile with natural aluminium finish. Blackmattfinishasoption.

Optional diffuser frame:Stampedaluminiumcore.

Four Way Throw


Diffusers shall beconed typewith eachconemanufacturedbyextrudedaluminiumlouveredprofiles or one piece die formed aluminiumconstructionarrangedinconcentricconestodeflectairequallyinfourdirections.



Damperbladesareseparatedfromitsframebynylonbushes


Discharge air equally in four horizontaldirections.


Availableinrectangularsizesasoption.Suitableforflushmountinginlayintypeceiling.

6.5





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Model ACD4:SameasACD4+D,butwithoutopposedbladedamperandfoamgasket.Suitableforreturnairapplications.





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CEILINGDIFFUSERS

ANTI-SMUDGE CEILING DIFFUSER model: ACD4+D (AS)

CONSTRUCTION:Frame and core: High quality die formedaluminium construction as standard. Highqualityextrudedaluminiumprofilesasoption.


6.6

Description:Outer cone design minimizes smudging byreducing thedustaccumulationon theceilingaroundthediffuser.

Theframeandcoreareofhighqualitystampedaluminium construction as standard or highquality extruded aluminium profiles as optionwiththeadvantagesofcorrosionresistanceandrigidity.

Louvered type core is fixed to the framewithaluminium pins loaded with steel springs.Complete inner core assembly can be easilyremoved to allow for maximum flexibilityin installation, maintenance and damperadjustment.


Damperbladesareseparatedfromtheframebynylonbushes.

Opposedbladedamperisscrewoperatedfromthefaceopeningofthediffuserafterremovingtheinnercore.


Foamgasket issealedaroundthebackoftheframetoavoidairleakage.

Standard finishes:Naturalaluminiumanodizedfinish.PowdercoatedcolourfinishasperRALcolourcodes.

Flexibilityoffinishingisavailableasoption.

Models ACD4(AS):SameasACD4+D(AS)butwithoutdamperandfoamgasket.

Also available in oneway, twowayand threewaythrows.




ad

h



CEILINGDIFFUSERS



model: ACD4R+D RECTANGULAR

CEILING DIFFUSER

6.7


Diffusers shall beconed typewith eachconemanufacturedbyextrudedaluminiumlouveredprofiles,arrangedinconcentricconestodeflectairequallyinfourdirections.



Foamgasket issealedaroundthebackof theframeasoptiontoavoidairleakage.

Thisproductcanbemanufacturedforone,two,threeandfourwaythrows.

Diffusers are available in rectangular sizes asperclientschoice.

Model ACD4R:Construction same as ACD4R+D, withoutopposedbladedamperandfoamgasket.



CEILINGDIFFUSERS

CORE PATTERN CEILING DIFFUSER

x

ACD1

SquareAir pattern

One way

Two way

Three way

Four way

Two waycorner

Rectangular

ACD2

ACD2C

ACD3

ACD4 ACD4R

ACD1R - X

ACD2R - X

ACD2R - C1

ACD3R - X ACD3R - Y

ACD2R - C2

ACD1R - Y

ACD2R - Y

x x

x xxx

x

y

y

x xx

xx

x

y

y

y

y

y

y y

x

x

xx

yy

y

y

Core pattern:

6.8

CEILINGDIFFUSERS



CEILING TILE REPLACEMENT DIFFUSER model: ACDM

CONSTRUCTION:Frame and core: High quality die formedaluminiumsheetswithsuitableflangeasouterframe.

Damper frame and blades: High qualityextrudedaluminiumprofilewithnaturalfinish.Blackmattfinishasoption.

Description:ThebasicconceptofhavingACDmoduletypeistoreplaceaceilingtilebydiffuserofanynecksize.Thusthealignmentoftilesarenotaltered.

The frame and blades are of high qualityextruded aluminium profiled construction withthe advantages of corrosion resistance andrigidity.

Diffusers are coned type, each cone ismanufactured as one piece die formedaluminiumconstructionarrangedinconcentricpatterntodeflectairinfourdirections.

3 way, 2 way, 1 way, cones are available asoption and are manufactured of high qualityextrudedaluminium.

Louveredtypecoreisfixedtotheouterframe,which has a constant outer size (600mm x600mm) for different neck sizes, with steelsprings core can be easily removable andinterchangeabletoallowformaximumflexibilityin installation, maintenance and damperadjustment.





Foamgasket issealedaroundthebackof theframeasoptiontoavoidairleakage.

Finishes:Naturalaluminiumanodizedfinish.PowdercoatedcolourfinishasperRALcolourcodes.

S.No Neck Size (in mm) Outer flange size (in mm)

1. 150x150 600x600

2. 225x225 600x600

3. 300x300 600x600

4. 375x375 600x600

5. 450x450 600x600

Models

ACDM-4 4way

ACDM-3 3way

ACDM-2 2way

ACDM-1 1way

ACD Module return diffusers are availablewithout damper and foam gasket for return airapplications.

6.9



CEILINGDIFFUSERS

COMBINEDCEILING DIFFUSERmodel: ACCD

Description:Frame and core is of high quality extrudedaluminium profiled construction with theadvantagesofcorrosionresistanceandrigidity.

Return air grid is located centrally in thediffuser.

Supplyairinnercoresaremountedtotheframeby4machinescrewsandtwosteelsprings.

Returnaireggcrategridisrigidlyfixedtoinner corebyrivets.

Coreandreturnairgridcanbeeasilyremovedasasinglepiecetoallowformaximumflexibilityininstallationandmaintenance.

Foamgasketissealedaroundthebackofthe frameasoptiontoavoidairleakage.

Availableinsquaresizeasstandard.Rectangularsizesasoption.

Standard finishes:Naturalanodizedaluminiumfinish.PowdercoatedcolourfinishasperRALcolourcodes.

Flexibilityoffinishisavailableasoption.





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CONSTRUCTION:Frame: High quality extruded aluminiumprofilewith33mmflangewidth.

Core:Highqualityextrudedaluminiumprofilewithnaturalaluminiumfinish.

Return air core:12.5mmx12.5mmx12.5mmaluminiumeggcrategrid.

Fixing details:Concealedscrewfixingfromneckofthediffusetotheduct.

6.10



CEILINGDIFFUSERS

CURVED BLADECEILING DIFFUSER model: ACBD

CONSTRUCTION:Frame: High quality extruded aluminiumprofilewith30mmflangewidth.

Blades: Aerofoil blades from aluminiumprofiles.

Description:The frame and blades are of high qualityextruded aluminium profiled construction withthe advantages of corrosion resistance andrigidity.

Frame is separated from aerofoil blades bynylonbushings.Thisensuresquiet,smoothandrattlefreeoperation.

Framegasketissealedaroundthebackoftheframeasoptiontoavoidairleakage.

Standard finishes:PowdercoatedasperRALcolourcodes.Flexibilityoffinishingisavailableasoption.







30

30

30

30

30

30One way

Two way

Four way

Adjustable Pattern

6.11



CEILINGDIFFUSERS

CURVED BLADE CEILING DIFFUSER model: ACBD

Three way

Four way

Standard sizes:Height

100 200 300 400 500 600

Leng

th

200 x x

300 x x x

400 x x x

500 x x x x

600 x x x x x

800 x x x x x

1000 x x x x

1200 x x x x

Other sizes available on request.

Adjustable Pattern

6.11



CEILINGDIFFUSERS

CONSTRUCTION:Diffuser:1.2mm(or)1.5mmthickaluminiumsheet.Diffuser Blades:EasilyrotatableplasticbladesNeck:Standardsize250dia.Module:600mmx600mm,595mmx595m.Plenum:20gauge(or)22gaugethickGIsheet.

Description:Diffuser is made by punching high qualityaluminiumsheetandfixedwitheasilyrotatableplasticblades.

The slotted circular face design with easilyadjustable plastic blades provides bothhorizontalandverticalprojectionofairdischargeallovertheoccupantarea.

Supplyairjetvelocityiseffectivelyreducedduetohighmixingeffect.

Ability to create either an external or internalswirl.

Diffusercanbefixeduptoaheightof4.5m.

Standard finishes:PowdercoatedasperRALcolourcodes.

Air flow in CFM 186 234 280 327 374 419 464 511 566

Air flow in m3/sec 0.088 0.111 0.132 0.154 0.176 0.197 0.219 0.241 0.267

Face velocity in m/sec 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0

P loss in mm of H2O 0.410 0.640 0.922 1.26 1.64 2.05 2.46 2.96 3.57

Throw in meters 1.3-2.0 1.8-2.6 2.1-3.2 2.4-3.6 2.6-4.3 3.1-4.7 3.6-5.4 4.2-6.2 5.0-6.8

NC



CEILINGDIFFUSERS

FIXED SWIRL CEILING DIFFUSER model: ASD-F

Plenum Neck size 250dia, Module size 600x600mm

Neckvelocityismeasuredinm/sec.Ps:StaticpressurelossacrossthediffuserinmmofH2O.Throw(meters)ismeasuredforterminalvelocitiesof0.75,0.5&0.25m/sec.Noisecriteria(NC)basedonaroomattenuationof10dB.

Air flow in CFM 212 265 318 371 424 477 530 583 636

Air flow in m3/sec 0.100 0.125 0.150 0.175 0.200 0.225 0.250 0.275 0.300

Face velocity in m/sec 2 2.5 3 3.5 4 4.5 5 5.5 6

P loss in mm of H2O 0.315 0.563 0.811 1.103 1.441 1.808 2.175 2.675 3.475

Throw in meters 0.9-1.6 1.3-2.0 1.6-2.5 2.0-2.9 2.3-3.4 2.6-3.9 3.1-4.4 3.7-5.0 4.0-5.7

NC 16 20 26 30 34 39 45 50 >50

Description:Diffuser is made by punching high qualityaluminiumsheet.

Theslottedrotaryfacedesignandthecircularpatternoftheradialfixedvanesprovidetheswirlairhorizontaldistributionallovertheoccupantarea.

Supplyairjetvelocityiseffectivelyreducedduetohighmixingeffect.

Thediffusercanbefixeduptoaheightof4.5m.

Standard finishes:PowdercoatedasperRALcolourcodes.

CONSTRUCTION:Diffuser:1.2mm(or)1.5mmthickaluminiumsheet.Neck:Standardsize250dia.Module:600mmx600mm,595mmx595mm.Plenum:20gauge(or)22gaugethickGIsheet.

PLENUM BOX

d

SWIRL DIFFUSER

ROUND NECK

h = d+75mm

6.13



CEILINGDIFFUSERS

False ceiling sizes:

Product summary:

STANDARD FINISHES, SIZES, FIXING DETAILS &

PRODUCT SUMMARY

Standard finishes:Naturalaluminiumanodizedfinish.PowdercoatedcolourfinishasperRALcolourcodes.

Flexibilityoffinishingisavailableasoption. W = width in mm 150 225 300 375 450 525 600

D = Depth in mm 150 225 300 375 450 525 600

Duct size in mm x mm 150x150 225x225 300x300 375x375 450x450 525x525 600x600

False ceiling opening size 230x230 305x305 380x380 455x455 530x530 605x605 605x605

Fixing details:Concealed screw fixing from neckof the diffuser to the duct, afterremovingtheinnercore.

Standard sizes:AvailableinsquareandrectangularsizesAnycombinationofWxD.

Product order checklist: Model number (please refer

productsummary).

Size.

Colour (RAL 9010, 9016,Anodized aluminium finish orotherRALColours)

Quantity.

Optionalaccessories.

Model Number Product Description Remarks

ACD1+D SupplyAirDiffuser1wayWithdamper

Optionalaccessories

Filter

Equalizinggrid

Plenum(chapter15)

ACD2+D SupplyAirDiffuser2wayACD2C+D SupplyAirDiffuser2waycornerACD3+D SupplyAirDiffuser3wayACD4+D SupplyAirDiffuser4wayACD4+D(AS) SupplyAirDiffuserAntismudgeACD4R+D SupplyAirDiffuserrectangularACD1 ReturnAirDiffuser1way

Withoutdamper

Withoutfoamgasket

Optionalaccessories

Filter

ACD2 ReturnAirDiffuser2wayACD2C ReturnAirDiffuser2waycornerACD3 ReturnAirDiffuser3wayACD4 ReturnAirDiffuser4wayACD4(AS) ReturnAirDiffuserAntismudgeACD4R ReturnAirDiffuserrectangularACCD CombinedCeilingDiffuserACDM CeilingTileReplacementDiffuserACBD CurvedBladeAdjustableDiffuserASD-A SwirlDiffuserAdjustableASD-F SwirlDiffuserFixed

6.14



CEILINGDIFFUSERS

1. EQUALIZING GRID:Equalizinggridisfixedtothedamperbyrivets.

Equalizing grid is manufactured from highquality aluminium profiles with aerofoil bladesconnected by plastic bushes. Finish will besameasdamper.

This assembly will provide uniform airdistributionovertheneckofthediffuser,whichensuresreduction inpressuredrop,noiseandtrubulence.

Toorder,mentionmodelfromProductsummary+E.



Equalizing grid

Damper



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2. FILTERS:Ceilingdiffusersavailablewithremovabletypewashablealuminiumfilterswithaluminiummeshasthefiltermedia.

Fabricated from 1 mm thick aluminium sheetwithaluminiummeshasthefiltermedia.

Filterframeisscrewfixedtothediffuser.

Generally available in 12, 25, 40 and 50 mmthicknessasstandard.

Structurewill havehighdust holdingcapacityandlowresistancetoairflow.

Otherinsulatingmaterialsavailableasoption.

Toorder,mentionmodelfromproductsummary+F.



Aluminium Filter



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DIFFUSER ACCESSORIES

6.15

Table 6.1 Air flow data



Neckvelocityismeasuredinm/sec.Ps:StaticpressurelossacrossthediffuserinmmofH2O.Throw(meters)ismeasuredforaterminalvelocitiesof0.75,0.5&0.25m/sec.Noisecriteria(NC)basedonaroomattenuationof10dB.

CEILINGDIFFUSERS


Neck size in mm x mm Area factor In m2

Neck vel in m/sec 1.0 1.5 2.0 2.5 3.0 3.5

Cfm 47 72 95 119 144 167

150 x 150 M3/sec. 0.023 0.034 0.045 0.056 0.068 0.079

PsinmmH2O 0.69 1.05 2.11 3.54 4.98 6.44

0.0098 Throwinm 1.3-2-2.7 2-2.8-3.6 2.8-3.7-4.4 3.3-4.2-4.9 4-4.7-5.9 4.4-5.5-6.2

NC




CEILINGDIFFUSERS


Neckvelocityismeasuredinm/sec.Ps:StaticpressurelossacrossthediffuserinmmofH2O.Throw(meters)ismeasuredforaterminalvelocitiesof0.75,0.5&0.25m/sec.Noisecriteria(NC)basedonaroomattenuationof10dB.


Neck vel in m/sec 1.0 1.5 2.0 2.5 3.0 3.5

Cfm 47 72 95 119 144 167

150 x 150 M3/sec. 0.023 0.034 0.045 0.056 0.068 0.079

PsinmmH2O 0.64 0.87 2.02 3.41 4.83 6.1

0.0096 Throwinm 1.3-2-2.7 2-2.8-3.6 2.8-3.7-4.4 3.2-4-4.8 3.8-4.5-5.6 4.1-5.2-6

NC




CEILINGDIFFUSERS



Neck vel in m/sec 1.0 1.5 2.0 2.5 3.0 3.5

150 x 150

0.0095

TotalCFM 47 72 95 119 144 167

TotalM3/Sec 0.023 0.034 0.045 0.056 0.068 0.079

M3/SeceachsideofX 0.008 0.013 0.017 0.021 0.025 0.03

M3/SecinYside 0.007 0.008 0.011 0.014 0.018 0.019

PsinmmofH2O 0.56 0.85 1.72 2.87 4.06 5.29

ThrowineachsideofX-(M) 1.2-1.8-2.4 1.8-2.4-3.1 2.4-3.1-3.7 2.7-3.4-4 3.1-3.7-4.6 3.4-4.3-4.9

ThrowinYside-(M) 1.2-1.8-2.5 1.8-2.6-3.4 2.6-3.4-4.0 3.0-3.7-4.4 3.5-4.1-5.0 3.7-4.7-5.4

NC



Table 6.3 (cont.) Air flow data

CEILINGDIFFUSERS



Neck vel in m/sec 1.0 1.5 2.0 2.5 3.0 3.5

450 x 450

0.067

TotalCFM 430 644 858 1071 1287 1501

TotalM3/Sec 0.203 0.304 0.405 0.506 0.608 0.709

M3/SeceachsideofX 0.076 0.114 0.151 0.19 0.228 0.267

M3/SecinYside 0.051 0.076 0.103 0.126 0.152 0.175

PsinmmofH2O 0.84 1.70 3.16 5.16 7.52 10.51

ThrowineachsideofX-(M) 3.1-4.6-7.6 4.6-06.4-9.1 6.6-7.6-10.7 6.7-8.5-12.2 7.6-9.2-13.4 8.2-10.1-14

ThrowinYside-(M) 3.2-4.9-8.1 4.9-6.8-9.5 7.2-8.7-12.5 7.2-9.2-13.4 8.3-10.2-15.4 9.1-11.3-15.6

NC



Neckvelocityismeasuredinm/sec.Ps:StaticpressurelossacrossthediffuserinmmofH2O.Throw(meters)ismeasuredforterminalvelocitiesof0.75,0.5&0.25m/sec.Noisecriteria(NC)basedonaroomattenuationof10dB.

CEILINGDIFFUSERS



Neck size in mm x mm Area factor in m2

Neck vel in m/sec 1.0 1.5 2.0 2.5 3.0 3.5

150 x 150

0.0093

Cfm 47 72 95 119 144 167

M3/sec. 0.023 0.034 0.045 0.056 0.068 0.079

-PsinmmH2O 0.51 0.76 1.52 2.54 3.56 4.57

Throwinm 1.2-1.8-2.4 1.8-2.4-3.1 2.4-3.1-3.7 2.7-3.4-4 3.1-3.7-4.6 3.4-4.3-4.9

NC




CEILINGDIFFUSERS

RETURN AIR SQUARE CEILING DIFFUSER model: ACD1One Way

Neck size in mm x mm Neck Area In m2

Neck vel in m/sec 1.0 1.25 1.5 1.75 2.0 2.5 3.0 3.5 4.0

150 x 150

0.023

CFM 49 61 74 85 97 123 146 171 195

M3/sec. 0.023 0.029 0.035 0.04 0.046 0.058 0.069 0.081 0.092

-PsinmmH2O 0.65 1.04 1.51 2.06 2.66 4.25 6.12 8.54 11.18

NC

Neck size in mm x mm Neck Area In m2

Neck vel in m/sec 1.0 1.25 1.5 1.75 2.0 2.5 3.0 3.5 4.0

150 x 150

0.023

CFM 49 61 74 85 97 123 146 171 195

M3/sec. 0.023 0.029 0.035 0.04 0.046 0.058 0.069 0.081 0.092

-PsinmmH2O 0.65 1.04 1.49 2.04 2.61 4.17 6.00 8.34 10.77

NC



CEILINGDIFFUSERS

RETURN AIR SQUARE CEILING DIFFUSER model: ACD3Three Way

Neck size in mm x mm Neck Area in m2

Neck vel in m/sec 1.0 1.25 1.5 1.75 2.0 2.5 3.0 3.5 4.0

150 x 150

0.023

CFM 49 61 74 85 97 123 146 171 195

M3/sec. 0.023 0.029 0.035 0.04 0.046 0.058 0.069 0.081 0.092

-PsinmmH2O 0.7 1.12 1.48 2.02 2.59 4.14 5.96 8.2 10.67

NC




Neckvelocityismeasuredinm/sec.Ps:StaticpressurelossinmmofH2O.Noisecriteria(NC)basedonaroomattenuationof10dB.

CEILINGDIFFUSERS

RETURN AIR SQUARE CEILING DIFFUSER model: ACD4

Four Way

Neck size in mm x mm Neck Area in m2

Neck vel in m/sec 1.0 1.25 1.5 1.75 2.0 2.5 3.0 3.5 4.0

150 x 150

0.023

CFM 49 61 74 85 97 123 146 171 195

M3/sec. 0.023 0.029 0.035 0.04 0.046 0.058 0.069 0.081 0.092

-PsinmmH2O 0.64 1.02 1.45 1.98 2.51 4.01 5.72 7.9 10.16

NC

AIR MASTER EQUIPMENTS EMIRATES LLC.Post Box - 3180, Ajman, U.A.E.Tel: +971 6 7436900, 7439600 Fax: +971 6 7436700E-mail: [email protected], [email protected]


ceiling diffuser_chapter_6

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