Swirl Diffusers-we.. - Air Diffusion

May 2005Ceiling Swirl DiffusersAir DiffusionFixed Adjustable or VariableAir Pattern Ceiling Swirl DiffusersModels OD-4, OD-6, OD-7, OD-7V,OD-8, OD-9 and OD-11Features● Fixed Air Pattern Swirl● Adjustable Air Pattern Swirl● Variable Air Pattern Swirl● Ceiling or Duct Mounted● Circular or Square CeilingPanels● Purpose Designed PlenumBoxes

Model Ceiling SA Swirl Louvre Diffusers Face Ceiling DiffuserContentsPageIntroduction Page 3Model OD-4 – Fixed air pattern Page 4 - 7Model OD-6 – Variable air pattern Page 8 -12Model OD-7 – Fixed air pattern Page 13 -17Model OD-7V – Variable air pattern Page 18 - 24Model OD-8 – Adjustable air pattern Page 25 - 30Model OD-9 – Adjustable air pattern Page 31 - 38Model OD-11 – Variable air pattern Page 39 - 452

Ceiling Swirl DiffusersIntroductionSwirl Diffusers are designed to create arotary swirling motion to the supply airdischarge, which rapidly induces theroom air to quickly decrease the velocityand temperature difference of the supplyair.Within the AIR DIFFUSION range of swirldiffusers are fixed air pattern, adjustableair pattern and variable air pattern swirldiffusers. The fixed air pattern swirldiffusers have a horizontal discharge andare suitable for minimum mountingheights of 2.6 meters to a maximum of 4meters at a temperature difference of±10°K. Adjustable air pattern diffusers areused for the same mounting heights andtemperature differences but can beadjusted for horizontal or verticaldischarge. Whilst the variable air patternswirl diffusers have either a horizontal orvertical discharge and are suitable formounting heights up to 15 meters at atemperature difference of ± 10°K.In addition the variable air pattern swirldiffusers may be fitted with electricmotors for remote operation of the innervanes, which adjusts the air dischargefrom horizontal to vertical and vice versa.Alternatively, simple manually adjustedvanes are also available.The range consists of two styles of fixedair pattern swirl diffusers Models OD-4,OD-7 with two adjustable air patternModels OD-8 and OD-9 with each modeltype available with either a circular orsquare ceiling panel format. The ModelsOD-6 OD-7V and OD-11 variable airpattern swirl diffusers are only supplied ina circular casing format.Purpose designed and individuallyselected plenum boxes are available toensure the performance andcharacteristics of the diffuser.As standard all Models are finished topolyester powder white RAL9010 (30%gloss), alternatively other special finishesare available on request.Model OD-4Model OD-6Model OD-8Model OD-9Model OD-7Model OD-113

Ceiling Swirl DiffusersModel OD-4Installation GuideFlush with ceilingWith extended ductbelow the ceilingFlush mountingH = 2.6 – 4mMin. 2.6Surface mountingPlenum box with side entryPlenum box with top entryAbove open grid ceiling>150Single central fixing position shownOrdering InformationExampleModel Type Fixing Location, Type and Accessories Finish SizeOD-4 K1 83 500OD-4 – fixed pattern swirldiffuser in either square orcircular ceiling panel with preformedclose pitch vanes.K1 – Square Diffuser – single central fixing positionK4 – Square Diffuser – four fixing positionsR1 – Circular Diffuser – single central fixing positionK0 – Square Diffuser with Anti Smudge Ring –single central fixing positionR0 – Circular Diffuser with Anti Smudge Ring –single central fixing position.83 - White RAL9010Polyester Powder (30%Gloss). Alternative colourswithin the RAL colourrange, also available.(Subject to the relevantquantity surcharge).400500600625600D625D675DImportant Note: If the overall size is critical then it must be clearly stated on the order.All orders must be addressed to AIR DIFFUSION, Ruskin Air Management Limited.5

Model OD-4Ceiling Swirl DiffusersPerformance DataHLQ∆tzA,B∗V H1∆t LQ∆tzLx1.8mH1V L∆t L∗Q (m 3 /h) Air flowx (m) Horizonal distance to the wallH (m) Room heightH1 (m) Distance from ceiling to occupied zoneL (m) Throw distance (L=H1 + x)V L (m/s) Air velocity at the throw distance L∆t z (K) Temperate difference between the supplyand room air∆t L (K) Difference between the core and room airtemperature∆p t (Pa) Pressure dropL WA (db(A)) Sound power levelV H1 (m/s) Air velocity at the H1 distanceA, B (m) Distance between diffusers by length andby widthAir velocity at the throw distances (for OD-4 without diffusion ring and with ceiling effect)OD-4 size 400, 500, 600, 625B = 2.5 ...3.5mOD-4 size 600D, 625D, 675DB = 2.5 ...3.5mH1=0.81.0 1.2 1.4 1.6 2mH1=0.81.0 1.2 1.4 1.6 2m5000.404000.40800 m 3 /h0.350.356000.303000.305000.25200 m 3 /h0.25400v H1 (m/s)0.20v H1 (m/s)0.203000.151000.152001000.101 1.5 2 3 4 5 6Distance A(m)0.101 1.5 2 3 4 5 6Distance A(m)OD-4 size 400, 500, 600, 625B = 2.5 ...3.5mH1=0.8 1.0 1.2 1.4 1.6 2mOD-4 size 600D, 625D, 675DB>4mH1=0.8 1.0 1.2 1.4 1.6 2m0.406005000.35800 m 3 /h0.350.30400300 m 3 /h0.300.25600500400v H1 (m/s)0.250.200.15200100v H1 (m/s)0.200.153002001000.101 1.5 2 3 4 5 60.101 1.5 2 3 4 5 6Distance A(m)Distance A(m)6

Ceiling Swirl DiffusersModel OD-4Performance Data ContinuedOD-4 size 400, 500, 600, 6251.6 2 2.5OD-4 size 600D, 625D, 67DA=1 1.6 2 2.5v L1 (m/s)0.350.300.250.20∆t L∆t z200 m 3 /h6005004003000.080.070.060.05∆t L /∆t zv L1 (m/s)0.500.450.400.300.25700∆t L∆t z4005006008000.100.080.070.060.05∆t L /∆t z0.150.040.20300 m 3 /h0.040.100.051000.031.6 2 3 4 5 60.152000.031.6 2 3 4 5 6L(m)L(m)Pressure drop and sound power level (with plenum box having equalising grid).Spigot damper angle 90° - opened, 45° - half opened.OD-4/S size 400, 500, 600, 625 (Side Entry)spigot damper angleOD-4/S size 600D, 625D, 675D (Side Entry)spigot damper angle60100601005545°805545°80L WA (dB(A))50454090°604030∆Pt(Pa)L WA (dB(A))50454090°654038∆Pt(Pa)35203525301730232513252020102010200 300 400 500 600Q (m 3 /h)200 400 500 700 900Q (m 3 /h)6OD-4/V size 400, 500, 600, 625 (Top Entry)spigot damper angleOD-4/V size 600D, 625D, 675D (Top Entry)spigot damper angle6010060100L WA (dB(A))5550454045°90°80604030∆Pt(Pa)L WA (dB(A))5550454045°90°80654038∆Pt(Pa)35203525301730232513252020102010200 300 400 500 600Q (m 3 /h)200 400 500 700 900Q (m 3 /h)67

Model OD-6Model OD-6Ceiling Swirl DiffusersVariable Air Pattern Ceiling Swirl DiffuserModel OD-6DescriptionThe Model OD-6 is a variableair pattern swirl diffuser, whichis capable of providing bothhorizontal and verticaldischarge. Consisting of anouter tube casing and innertube assembly in a circularformat. The outer casing isfitted with a set of fixedvanes, whilst the inner tube isadjustable with a centralregulating vane to vary theflow of air. With the innervanes in the fully openposition 30% of the total airvolume is passed into theinner section. By regulatingthe inner vanes, varying throwdischarges can be achievedfrom fully horizontal to verticalprojection, Fig 1, which isimportant in the heatingmode. Three types ofoperation are availablemanual, pneumatic or electric.It is suitable for use wherelarge temperature differentialsare required. Typicalapplications include sportshalls, exhibition halls andother open spaces.Position 1Inner tube is closed. For floorto ceiling heights of 4 to 6m.Intensive cooling.Position 2Inner tube is half open. Normalair conditioning.Position 3Inner tube is fully opened. Forfloor to ceiling heights of up to15m. Intensive heating.Fig 1SpecificationMaterialComponents constructedfrom steel.Installation MethodsThree alternative installationmethods are available asfollows:Duct fixing using circularmating flange supplied withdiffuser.Duct connection usingseparate slip spigotconnection supplied withdiffuser.Plenum box supplied withdiffuser.All installation methods requirediffuser or plenum box /diffuser combination to besupported independently.AccessoriesCircular mating flange.Slip spigot connection.Purpose designed plenumbox, with spigot damper ifrequired.Pneumatic actuator or electricmotor operation.FinishWhite polyester powder coatto RAL9010 (30% gloss).Other colours are alsoavailable on request.Model TypesModel OD-6a/R – circularvariable swirl diffuser havingflush outer flange and fixedvanes. Inner vane and tubeassembly has adjustablemanual operation.Model OD-6a/P – circularvariable swirl diffuser havingflush outer flange and fixedvanes. Inner vane and tubeassembly has adjustablepneumatic actuator operation.Model OD-6a/B1 – circularvariable swirl diffuser havingflush outer flange and fixedvanes. Inner vane and tubeassembly has adjustableelectric motor operation (LM24 motor).Model OD-6a/B2 – circularvariable swirl diffuser havingflush outer flange and fixedvanes. Inner vane and tubeassembly has adjustableelectric motor operation (LM230 motor).Model OD-6a/B3 – circularvariable swirl diffuser havingflush outer flange and fixedvanes. Inner vane and tubeassembly has adjustableelectric motor operation (LM24 SR motor).Model OD-6d/R – circularvariable swirl diffuser havingdeeper outer flange and fixedvanes. Inner vane and tubeassembly has adjustablemanual operation.Model OD-6d/P – circularvariable swirl diffuser havingdeeper outer flange and fixedvanes. Inner vane and tubeassembly has adjustablepneumatic actuator operation.Model OD-6d/B1 – circularvariable swirl diffuser havingdeeper outer flange and fixedvanes. Inner vane and tubeassembly has adjustableelectric motor operation (LM24 motor).Model OD-6d/B2 – circularvariable swirl diffuser havingdeeper outer flange and fixedvanes. Inner vane and tubeassembly has adjustableelectric motor operation (LM230 motor).Model OD-6d/B3 – circularvariable swirl diffuser havingdeeper outer flange and fixedvanes. Inner vane and tubeassembly has adjustableelectric motor operation (LM24 SR motor). Fig 2.Each model type may besupplied with the differentinstallation methods, (specifyas required).Size RangeModel OD-6a/R andModel OD-6d/RSize 315Size 400Size 500Size 600Size 7008

Ceiling Swirl DiffusersModel OD-6Model Types Two shapes of discharge funnelOD-6a/ROD-6d/RCØCØ4H1231H1HH5BØADØBØADØa. funnel shape is suitable for shorter throw distances d. funnel shape is suitable for longer throw distancesComponent Parts1. Inner tube2. Outer casing3. Blade4. Control damper of inner tube5. Adjustable diffusion funnel.Different discharge forms influenced by flow control through the inner tube1. Manual operationOD-6/R2. Pneumatic operationOD-6/P3. Electric motor operationOD-6/B1, B2, B3Fig 2.9

Model OD-6Ceiling Swirl DiffusersInstallation Methods and Dimensions1. Circular mating flange (F)2. Slip spigot connection (A)CØCØDØH1H3HH1H3H4ADH2HADH2Circular mating flange only isdelivered which is fitted by ductinstallerDiffusor and slip spigot are alreadyconnectedDimensionsSize 315 400 500 600 700ØC 323 408 508 608 708ØD 248 313 398 498 628ØD1 313 398 498 628 708H 75 95 120 140 160H1 266 347 437 517 607H2 104 129 164 194 224H3 295 381 481 571 671H4 304 328 358 428 478Lx (L+30) 400x430 460x490 560x590 660x690 760x790OD-6a/RSize ØD ØA ØB ØC H H1315 527 156 97 323 75 266400 672 241 149 408 95 347500 822 341 219 508 120 437600 952 401 259 608 140 517700 1100 471 309 708 160 607OD-6d/RSize ØD ØA ØB ØC H H1315 533 156 97 323 104 295400 678 241 149 408 129 381500 908 341 219 508 164 481600 1078 401 259 608 194 571700 1266 471 309 708 224 671Size A ef (m 2 ) Inner tube A ef (m 2 ) Outer tube315 0.00728 0.10927400 0.01732 0.15573500 0.03755 0.23602600 0.05257 0.33120700 0.07488 0.45811Ordering InformationExampleModel Type Control Type & Accessories Installation Method Finish SizeOD-6a R A 83 400OD-6a - circular variable swirldiffuser having flush outer flangeand fixed vanesOD-6d - circular variable swirldiffuser having deeper outerflange and fixed vanes.R – Manual ControlP – Pneumatic ControlB1 – Electric Control LM 24B2 – Electric Control LM 230B3 – Electric Control LM 24 SR.Important Note: If the overall size is critical then it must be clearly stated on the order.All orders must be addressed to AIR DIFFUSION, Ruskin Air Management Limited.F - Circular mating flangeA - Slip spigot connection.83 - White RAL9010Polyester Powder (30%Gloss) Alternative colourswithin the RAL colourrange, also available.(Subject to the relevantquantity surcharge).31540050060070010

Ceiling Swirl DiffusersModel OD-6Performance Data ContinuedHLQ∆tzA,B∗V H1∆t LQ∆tzLx1.8mH1V L∆t L∗Q (m 3 /h) Air flowx (m) Horizonal distance to the wallH (m) Room heightH1 (m) Distance from ceiling to occupied zoneL (m) Throw distance (L=H1 + x)V L (m/s) Air velocity at the throw distance L∆t z (K) Temperate difference between the supplyand room air∆t L (K) Difference between the core and room airtemperature∆p t (Pa) Pressure dropL WA (db(A)) Sound power levelV H1 (m/s) Air velocity at the H1 distanceA, B (m) Distance between diffusers by length andby widthThrow distance at different control flap adjustmentsPosition 1201510Position 2201510Position 3201510555Lmax (m)size321700600500400315400∆t z=0K+5K+10K500 7001000+15K5000430036002900220019001500Lmax (m)size321700600500400315∆t z =0K+5K+10K+15K400500 7001000Lmax (m)size321700600500400315∆tz=0K+5K+15K400+10K500 7001000Q (m 3 /h)Q (m 3 /h)5000430036002900220019001500Q (m 3 /h)5000430036002900220019001500Velocity between two diffusers Air velocity at the wall Sound power level and pressure dropOD-6 size 315 B ≥ 5m OD-6 size 315 OD-6 size 315H1 = 3 5 8mA=2 3 4 5m200Position1V H1 = 0.15-0.3m/s5007002 2.5900Q= 1400m 3 /h13001000V L (m/s)0.60.50.40.30.23 4 5 6 2A(m)1500m 3 /h130010009007006005003 4 6 8L(m)∆p(Pa)1008060403020108200LWAdB(A) 20 30 35300 400 500 600 700 1000 180023Q (m 3 /h)4511

Model OD-6Ceiling Swirl DiffusersPerformance Data ContinuedVelocity between two diffusers Air velocity at the wall Sound power level and pressure dropOD-6 size 400 B ≥ 5m OD-6 size 400 OD-6 size 400H1=3 6 12m A=2 3 4 5m200Position123V H1 = 0.15-0.3m/s1500130010000.60.50.40.310080604030202800Q=2500m 3 /h23002000V L (m/s)Q=2500m 3 /h2000150010001000900800700∆p(Pa)2035 40 45 503 4A(m)0.25 7 102 3 4 6 8L(m)OD-6 size 500 B ≥ 5m OD-6 size 500H1=7 7 13m A=2 3 4 5m500108200600LWA = dB(A)800 1000 2000 3000 4000 5000Q (m 3 /h)OD-6 size 500Position123V H1 = 0.15-0.3m/s1000Q=2300m 3 /h250023002000160014001200V L (m/s)0.60.50.40.3Q=3200m 3 /h2500190016001300120011001000∆p(Pa)100806040302020 30 35 40 500.280023 4A(m)5 7 102 3 4 6 8L(m)OD-6 size 600 B ≥ 5m OD-6 size 600H1=5 8 14m A=2 3 4 5m108200600800 1000 2000 3000 4000 5000Q (m 3 /h)OD-6 size 600Position12 3V H1 = 0.15-0.3m/s21000150013003 4A(m)OD-6 size 700 B ≥ 5mH1=5 8 15m2000Q=2500m 3 /h350030002500V L (m/s)0.60.50.40.30.23000250020001800150013001000Q=4000m 3 /h5 7 102 3 4 6 8L(m)OD-6 size 700A=2 3 4 5m3500∆p(Pa)1008060403020108200800L WA = dB(A)20 30 40 501000 2000 3000 4000 6000 8000OD-6 size 700Q (m 3 /h)Position1233V H1 = 0.15-0.3m/s21700140013008000Q=4500m 3 /h40003500290023003 4 5 7 10A(m)V L (m/s)0.60.50.40.30.28000Q=4500m 3 /h400035003000250018001600130010002 3 4 6 8L(m)∆p(Pa)1008060403020108800L WA = dB(A) 20 30 40 501000 2000 3000 4000 6000 8000Q (m 3 /h)12

Ceiling Swirl DiffusersModel OD-7Model OD-7 Fixed Horizontal Air Pattern Ceiling Swirl DiffuserModel OD-7DescriptionThe Model OD-7 is a fixed airpattern swirl diffuser giving ahorizontal discharge with aset of angled inner vanes.Available in 3 different stylesfrom either a circular face setinto a square ceiling panel,circular with flush flange orcircular with deeper flangeformat. Typical applicationsinclude all offices, shops andother all-purpose areas, withceiling heights up to 4 metres.SpecificationMaterialComponents constructedfrom steel.AccessoriesCrossbar fixing.Slip spigot connection.Purpose designed plenumbox, with spigot damper ifrequired.FinishWhite polyester powder coatto RAL9010 (30% gloss)Other colours are alsoavailable on request.Size RangeModel OD-7/RB, Model OD-7/RC and Model OD-7/KB.Size 100Size 125Size 160Size 180Size 200Size 250Size 315Size 355Size 400(The Model OD-7/KB isavailable in all sizes to suit anominal 600x600mm ceilinggrid).Installation MethodsThree alternative installationmethods are available asfollows:Duct fixing using single centralcountersunk screw hole ontocrossbar supplied loose withdiffuser (for fixing by others).Duct connection usingseparate slip spigotconnection supplied withdiffuser.Plenum box supplied withdiffuser.(When using a diffuser andplenum box combination, thediffuser is normally fixed to theplenum box by a singlecentral fixing.)The diffuser may also besupplied plain with no fixingsfor installation by others.All installation methods requirediffuser or plenum box /diffuser combination to besupported independently.Model Types andDimensionsOD-7/RB OD-7/KB OD-7/RCModel OD-7/RB circular swirldiffuser having circular facewith flush outer flange.Model OD-7/KB circular swirldiffuser having square ceilingpanel.Model OD-7/RC circular swirldiffuser having circular facewith deeper outer flange.Each model type may besupplied with the differentinstallation methods, (specifyas required).CØD1ØD2HCØD2ØD1F x FH8ØD1ØD350Size ØD1 ØD2 ØD3 F H C A ef (m 2 )100 98 150 - 198 65 17 0.0033125 123 200 158 248 65 17 0.0049160 158 250 197 298 65 20 0.0081180 178 250 - 298 65 20 0.0104200 198 300 241 348 65 15 0.0127250 248 350 295 398 65 15 0.200315 313 450 364 498 88 35 0.0317355 353 500 - 595 88 35 0.0481400 398 500 - 595 125 45 0.0620A ef (m 2 ) - effective discharge area (m 2 )13

Model OD-7Ceiling Swirl DiffusersInstallation GuideØD1CHØD2ØD-7/RB(Diffuser only)ØD0Size ØD1 ØD0 L HØD240LHØD2ØD-7/RB/AS100 97 78 20 65125 122 98 35 65160 157 123 40 65180 177 158 25 65200 197 178 25 65250 247 198 50 65315 32 248 65 88355 352 248 65 88400 397 313 65 125ØD-7/RB/ASlip spigot connection (A)Slip spigot connection withcross bar fixing (AS)Suspension brackets (0)Installation with spigot(Spigot and diffiser are connected)Installation with plenum box(Spigot and plenum box are connected)Ordering InformationExampleModel Type Installation Method Finish SizeOD-7/RB AS 83 315Model OD-7/RB circular swirl diffuserhaving circular face with flush outerflange.Model OD-7/KB circular swirl diffuserhaving square ceiling panel.Model OD-7/RC circular swirl diffuserhaving circular face with deeper outerflange.A – Slip spigot connection.S – Crossbar fixing (crossbarsupplied loose for fixing by others)AS – Slip spigot with cross bar fixing.83 - White RAL9010Polyester Powder (30%Gloss). Alternative colourswithin the RAL colourrange, also available.(Subject to the relevantquantity surcharge).100125160180200250315355400Important Note: If the overall size is critical then it must be clearly stated on the order.All orders must be addressed to AIR DIFFUSION, Ruskin Air Management Limited.14 6

Ceiling Swirl DiffusersModel OD-7Performance DataHLQ∆tzA,B∗V H1∆t LQ∆tzLx1.8mH1V L∆t L∗Q (m 3 /h) Air flowx (m) Horizonal distance to the wallH (m) Room heightH1 (m) Distance from ceiling to occupied zoneL (m) Throw distance (L=H1 + x)V L (m/s) Air velocity at the throw distance L∆t z (K) Temperate difference between the supplyand room air∆t L (K) Difference between the core and room airtemperature∆p t (Pa) Pressure dropL WA (db(A)) Sound power levelV H1 (m/s) Air velocity at the H1 distanceA, B (m) Distance between diffusers by length andby widthAir velocity of the throw distance (with ceiling effect)Size 100B ≥ 4.0mH1= 0.9 1.2 1.6 2.0 mH1= 0.9 1.2 1.6 2.0 mB = 2.5-4mA1= 0.5 1.0 2.0 3.0 mV H1 v A (m/s)0.500.400.300.200.150.101501005030 (m 3 /h)350300250200V H1 v A (m/s)0.600.400.300.200.150.101005030 (m 3 /h)150 300250200V L V (m/s)0.700.600.500.400.300.200.150.1030 m 3 /h501003002502001500.130.100.070.050.040.030.02∆t L / ∆t z∆t L / ∆t ZSize 1250.71.0 1.5 2.0 3.0 4.0 6.0 mA0.71.0 1.5 2.0 3.0 4.0 6.0 mA0.70.011.0 1.5 2.0 3.0 4.0 7.0 10.0 mLH1= 0.9 1.2 1.6 2.0 mB ≥ 4.0mH1= 0.9 1.2 1.6 2.0 mB = 2.5-4mA1= 0.5 1.0 2.0 3.0 mV H1 v A (m/s)0.600.400.300.200.150.10250150100725036 m 3 /h300V H1 V A (m/s)0.600.400.300.200.150.1015010072503625 m 3 /h200 250V L V (m/s)0.600.400.300.200.150.1025200145110725436∆t L / ∆t Z250 m 3 /h0.130.100.070.050.040.030.02∆t L / ∆t zV H1 V m/sSize 1600.400.300.200.150.100.080.060.040.7 1.0 1.5 2.0 3.0 4.0 6.0 mAB ≥ 4.0mH1= 0.9 1.2 1.6 2.0 mV=200m 3 /h1501007550400.7 1 1.5 2 3 4 5 6 mAV H1 V A (m/s)0.40.30.20.150.10.080.060.040.7H1= 0.9 1.2 1.6 2.0 m0.71.0 1.5 2.0 3.0 4.0 6.0 mAV=200 m 3 /h150100755035B = 2.5-4m1 1.5 2 3 4 5 6 mAV L V (m/s)0.400.300.200.150.100.060.7A1= 0.5 1.0 2.0 3.0 m0.70.011.0 1.5 2.0 3.0 4.0 7.0 10.0 mLV - 200 m 3 /h15010075603525∆t L / ∆t Z0.100.080.060.040.030.020.011 1.5 2 3 5 7 10 mL∆t L / ∆t z15

Model OD-7Ceiling Swirl DiffusersPerformance Data ContinuedAir velocity of the throw distance (with ceiling effect)Size 180B ≥ 4.0mB =2.5-4mH1= 0.9 1.2 1.6 2.0m H1= 0.9 1.2 1.6 2.0m A= 0.5 1.0 2.0 3.0mV H1 v A (m/s)0.600.400.300.200.150.1050040035030020025015010050 m 3 /hV H1 v A (m/s)0.400.300.200.150.1020015010025030035050 m 3 /h400500V H1 v A (m/s)0.700.500.400.300.200.150.10∆tL / ∆t Z50040030025020015010050 m 3 /h0.130.100.070.050.040.030.02∆t L / ∆t ZV H1 v A (m/s)0.500.400.300.200.150.10Size 2000.7 1 1.5 2 3 4 6 m 0.7 1 1.5 2 3 4 6 m6004003502502001501007250 m 3 /hAB ≥ 4.0mB=2.5-4mH1= 0.9 1.2 1.6 2.0m H1= 0.9 1.2 1.6 2.0m A= 0.5 1.0V H1 v A (m/s)0.500.400.300.200.150.10A3002502001501007250 m 3 /hV H1 v A (m/s)0.500.400.300.200.150.100.010.7 1 1.5 2 3 4 6 7 10 mL2.0 3.0m100 m 3 /h7250∆t L / ∆t Z6004003002001500.130.100.070.050.040.030.02∆t L / ∆t Z0.7 1 1.5 2 3 4 6 mA0.7 1 1.5 2 3 4 6 mA0.010.7 1 1.5 2 3 4 7 10 mLV H1 v A (m/s)0.400.300.200.150.10Size 25050040030020015010072 m 3 /hB ≥ 4.0m800600V H1 v A (m/s)0.400.300.200.150.1030020015010072 m 3 /hB=2.5-4mH1= 0.9 1.2 1.6 2.0m H1= 0.9 1.2 1.6 2.0m A= 0.5 1.0 2.0 3.0m800600400V H1 v A (m/s)0.400.300.200.150.10∆t L / ∆t Z50030025020015010050 m 3 /h0.130.100.070.050.040.030.02∆t L / ∆t Z0.7 1 1.5 2 3 4 6 mA0.7 1 1.5 2 3 4 6 mA0.010.7 1 1.5 2 3 4 7 10 mLSize 315B=2.5-4mH1= 0.9 1.2 1.6 2.0m H1= 0.9 1.2 1.6 2.0m A= 0.5 1.0 2.0 3.0mV H1 v A (m/s)0.600.400.300.200.150.10500400300200150100 m 3 /h900700600V H1 v A (m/s)0.600.400.300.200.150.10500400300200150 m 3 /h1000800600V H1 v A (m/s)0.400.300.400.200.150.101100 m 3 /h90070050040030025015010050∆t L / ∆t Z0.130.100.070.050.040.030.02∆t L / ∆t Z0.7 1 1.5 2 3 4 6 mA0.7 1 1.5 2 3 4 6 mA0.7 1 1.5 2 3 4 7 10 mL16

Ceiling Swirl DiffusersModel OD-7Performance Data Continuedv H1 v m/sv H1 v m/s0.400.300.250.200.150.100.400.300.200.150.10Size 355B ≥ 4.0mB = 2.5-4mH1= 0.9 1.2 1.6 2.0 m H1= 0.9 1.2 1.6 2.0 m A= 0.5 1 2 3 mSize 400H1= 0.9 1.2 1.6 2.0 m200500430360100 m 3 /hV=650 m 3 /h0.7 1 1.5 2 3 4 5 6800600500400300AB ≥ 4.0mv H1 v m/s14001000v H1 v m/s0.400.300.250.200.150.100.500.400.300.200.150.10600500400300200500430360150 m 3 /hV=650 m 3 /h0.7 1 1.5 2 3 4 5 6Av H1 v m/sv L v m/s0.400.30B = 2.5-4mH1= 0.9 1.2 1.6 2.0 m A = 0.5 1 2 3 m150010008000.250.200.150.100.700.600.500.400.300.200.150.10150012001000800 m 3 /h500400300100200V=650 m 3 /h500360∆t L / ∆t Z0.100.080.060.040.030.020.010.7 1 1.5 2 3 5 7 10L0.130.100.070.050.040.030.02∆t L / ∆t Z ∆t L / ∆t Z0.7 1 1.5 2 3 4 6 mA0.7 1 1.5 2 3 4 6 mA∆t L / ∆t Z0.010.7 1 1.5 2 3 4 7 10 mLPressure drop and sound power levelThe diagram values apply to OD-7 with plenum box, at 100% open regulation blade. For intermediate diffuser sizes, select theparameters from the diagram for the model of the nearest smaller size (exception: for size 100 select the parameters from the diagramfor size 125). Line A is for OD-7/RC, Line B is for OD-7/RB and OD-7/KB.∆p 1 / (Pa) ∆p 1 / (Pa)OD-7 size1251008060504030201086OD-7 size 250100806050403020302520303540 50 60 80 100 150 200Q (m 3 /h)353025A40OD-7 size 160OD-7 size 315100806050403020101088656100 150 200 300 400 600 800 200Q (m 3 /h)L WA (dB(A))L WA (dB(A))20OD-7 size 200A B10080A10080A B4560456045405040504040403035303520302030252545B∆p 1 / (Pa)∆p 1 / (Pa)1086520252040 50 60 80 100 150 200 300 70 100 150 200 300 400 500Q (m 3 /h)Q (m 3 /h)30354045AB10865OD-7 size 40020010050201020504540353025200300 400 500 600 700 800 200 300 500 700 900 1200 1600Q (m 3 /h)L WA (dB(A))L WA (dB(A))∆p 1 / (Pa)∆p 1 / (Pa)L WA (dB(A))Q (m 3 /h)L WA (dB(A))AB17

Model OD-7VCeiling Swirl DiffusersModel OD-7V Variable Air Pattern Ceiling Swirl DiffuserDischarge type by coolingDischarge type by normalair-conditioningDischarge type by heatingModel OD-7VDescriptionThe Model OD-7V is avariable air pattern swirldiffuser having a set ofmovable inner vanes to alterthe angle of discharge fromhorizontal to vertical, which isimportant to ensure optimumheating and coolingfunction.Two types of controlmay be supplied manual orelectric motor operation.Available in 2 styles fromeither a circular face set intosquare ceiling panel or circularwith flush flange. Typicalapplications include generaloffices or operational areaswhere a high air change rateis required.SpecificationMaterialComponents constructedfrom steel.AccessoriesCrossbar fixing.Slip spigot connection.Purpose designed plenumbox, with spigot damper ifrequired.FinishWhite polyester powder coatto RAL9010 (30% gloss).Other colours are alsoavailable on request.Size RangeModel OD-7V/RA andModel OD-7V/KA.Size 180Size 200Size 250Size 315Size 355Installation MethodsThree alternative installationmethods are available asfollows:Duct fixing using single centralcountersunk screw hole ontocrossbar supplied loose withdiffuser (for fixing by others).Duct connection usingseparate slip spigotconnection supplied withdiffuser.Plenum box supplied withdiffuser.(When using a diffuser andplenum box combination, thediffuser is normally fixed to theplenum box by a singlecentral fixing.)The diffuser may also besupplied plain with no fixingsfor installation by others.All installation methods requirediffuser or plenum box /diffuser combination to besupported independently.Model Types andDimensionsModel OD-7V/RA circularswirl diffuser having circularface with flush outer flange.Model OD-7V/KA circularswirl diffuser having squareceiling panel.ØD1ØD2H8ØD1D x DHEach model type may besupplied with the differentinstallation methods, (specifyas required).Size ØD1 D x D ØD2 H A ef (m 2 )180 177 248 280 134 0.0168200 197 248 320 142 0.0208250 247 298 380 178 0.0357315 312 398 490 241 0.0566355 352 448 550 264 0.0728A ef (m 2 ) - effective discharge area (m 2 )18

Ceiling Swirl DiffusersModel OD-7Vinstallation GuideInstallation with suspension bracketsInstallation with spigot(Spigot and diffuser are connected)Installation with plenum box(Spigot and diffuser are connected)ØD040ØD1LHSize ØD1 ØD0 L H180 177 148 25 134200 197 178 25 142250 247 198 50 178315 312 248 65 241355 352 313 35 264Slip spigot connectionOrdering InformationExampleModel Type Control Type and Accessories Installation Method Finish SizeOD-7V/KA B2 S 83 250Model OD-7V/RA circularvariable swirl diffuser havingcircular face with flush outerflange.Model OD-7V/KA circularvariable swirl diffuser havingsquare ceiling panel.R – Manual ControlB1 – Electric Control LM 24B2 – Electric Control LM 230B3 – Electric Control LM 24 SR.A – Slip spigot connection.S – Crossbar fixing(crossbar supplied loosefor fixing by others)AS – Slip spigot with crossbar fixing.83 - White RAL9010Polyester Powder (30%Gloss) Alternative colourswithin the RAL colourrange, also available.(Subject to the relevantquantity surcharge).180200250315355Important Note: If the overall size is critical then it must be clearly stated on the order.All orders must be addressed to AIR DIFFUSION, Ruskin Air Management Limited.19

Model OD-7VCeiling Swirl DiffusersPerformance DataLA, BLHQ∆tZPosition 1Position 2Position 3∗Q∆tZV H1 ∆t Hx1.8mH1V L∆t LQ (m 3 /h) Air flowx (m) Horizonal distance to the wallH (m) Room heightH1 (m) Distance from ceiling to occupied zoneL (m) Throw distance (L=H1 + x)V L (m/s) Air velocity at the throw distance L∆t z (K) Temperate difference between the supplyand room air∆t L (K) Difference between the core and room airtemperature∆p t (Pa) Pressure dropL WA (db(A)) Sound power levelV H1 (m/s) Air velocity at the H1 distanceA, B (m) Distance between diffusers by length andby widthThrow distance at different blade adjustmentsPosition 1 Position 2 Position 3201510201510201510555Hmax (m)size321355315250200180300200100∆t z = OK+4K+8K1000900800600 700400 500+12K200014001200Hmax (m)size321355315250200180∆t z = OK+5K+10K300200100+15K1000900800600 700400 500200014001200Hmax (m)size321355315250200180∆t z = OK+5K+10K+15K300200100900800600 700400 5002000140012001000Q (m 3 /h)Q (m 3 /h)Q (m 3 /h)20

200100300200300Ceiling Swirl DiffusersModel OD-7VPerformance Data ContinuedAir velocity at the throw distancesOD-7V size 180Position 1 Position 2 Position 33.02.25001.81.81.8400v H1 (m/s) v H1 (m/s)1.10.60.40.30.20.10.10.5 0.7 1 2 3 4 0.5 0.7 1 2 3 41.81.10.60.4500400200100OD-7V size 200300 (m 3 /s)V H1 (m/s)H 1 (m) H 1 (m)Position 1 Position 2 Position 3v H1 (m/s)1.10.60.40.30.21.81.10.60.4100200500400300 (m 3 /s)V H1 (m/s)v H1 (m/s)1.10.60.40.30.20.13.02.21.81.10.60.4300200Q=100 (m 3 /h)0.5 0.7 1 2 3 4H 1 (m)5004006000.30.30.3200 (m 3 /s)400600300 (m 3 /s)Q=100 (m 3 /s)1004005005000.26000.20.20.10.5 0.7 1 2 3 40.10.5 0.7 1 2 3 40.10.5 0.7 1 2 3 4H 1 (m)H 1 (m)H 1 (m)21

3001000Model OD-7VCeiling Swirl DiffusersPerformance Data ContinuedAir velocity at the throw distanceOD-7V size 250Position 1 Position 2 Position 33.02.21.81.11.81.110001.81.1v H1 (m/s)0.60.41000v H1 (m/s)0.60.4800v H1 (m/s)0.60.480010008005005000.30.30.30.2500 (m 3 /h)100 (m 3 /h)300Q=100 (m 3 /h)3000.20.21000.1 0.1 0.10.5 07 1 2 3 40.5 07 1 2 3 40.5 07 1 2 3 4H 1 (m)H 1 (m)H 1 (m)OD-7V size 315Position 1 Position 2 Position 33.02.21.81.81.8v H1 (m/s)1.10.60.41000v H1 (m/s)1.10.60.41000800600v H1 (m/s)1.10.60.48006000.38000.34000.34000.2600400Q=200 (m 3 /h)0.20.2Q=200 (m 3 /h)Q=200 (m 3 /h)0.1 0.1 0.10.5 07 1 2 3 40.5 07 1 2 3 40.5 07 1 2 3 4H 1 (m)H 1 (m)H 1 (m)2.2OD-7V size 355Position 1 Position 22.2Position 32.21.61.615001.6150013001.215001.21.2100010000.80.80.8900v H1 (m/s)0.50.4v H1 (m/s)0.50.4800v H1 (m/s)0.50.40.3100013000.36000.3800800300 (m 3 /h)0.20.20.2600600300 (m 3 /h)300 (m 3 /h)0.10.5 07 1 2 3 4H 1 (m)0.10.5 07 1 2 3 4H 1 (m)0.10.5 07 1 2 3 4H 1 (m)22

Ceiling Swirl DiffusersModel OD-7VPerformance Data ContinuedAir velocity at the throw distance and temperature quotientOD-7V size 180OD-7V size 200H1=11.6 2 2.50.13H1=11.6 2 2.50.13v L1 (m/s)0.500.400.300.250.200.1550200 (m 3 /h)1005004003000.100.070.050.040.03∆t L / ∆t zv L1 (m/s)0.500.400.300.250.200.15200 (m 3 /h)1005004003000.100.070.050.040.03∆t L / ∆t z0.100.020.10500.02∆t L∆t z0.010.6 1 2 3 5 7 8L(m)∆t L∆t z0.010.6 1 2 3 5 7 8L(m)OD-7V size 250OD-7V size 315H1=11.6 2 2.50.13H1=11.6 2 2.50.130.400.300.25200 (m 3 /h)3007006004000.100.070.050.400.300.253005007008000.100.070.05200 (m 3 /h)v L1 (m/s)0.200.151000.040.03∆t L / ∆t zv L1 (m/s)0.200.151000.040.03∆t L / ∆t z0.10500.020.10500.02∆t L∆t z0.010.6 1 2 3 5 7 8L(m)∆t L∆t z0.010.6 1 2 3 5 7 8L(m)H1=1OD-7V size 3551.6 2 2.50.130.100.400.300.070.2550010007000.05v L1 (m/s)0.200.15100200 (m 3 /h)3000.040.03∆t L / ∆t z0.100.02∆t L∆t z0.010.6 1 2 3 5 7 8L(m)23

Model OD-7VCeiling Swirl DiffusersPerformance Data ContinuedPressure drop and sound power levelOD-7V size 180OD-7V size 20060101601015074507740574054L WA (dB(A))302010Position 1Position 2Position 328134∆Pt(Pa)L WA (dB(A))302010Position 1Position 2Position 333134∆Pt(Pa)100 200300 400 500 600Q (m 3 /h)100 2003o0 400 500 600Q (m 3 /h)OD-7V size 250OD-7V size 3156010160675071504440464029L WA (dB(A))302010Position 1Position 2Position 322134∆Pt(Pa)L WA (dB(A))302010Position 1Position 2Position 31783∆Pt(Pa)200 300400 600 800 1000300 400600800 1000 1200Q (m 3 /h)Q (m 3 /h)605040OD-7V size 355705018L WA (dB(A))302010Position 1Position 2Position 394∆Pt(Pa)200 300400 600 800 1000Q (m 3 /h)24

Ceiling Swirl DiffusersModel OD-8Model OD-8 Horizontal or Vertical Air Pattern Ceiling Swirl DiffuserVertical dischargeAir discharge - rightAir discharge - lefta. swirl effectb. one-way discharge c. two-way dischargeModel OD-8DescriptionThe Model OD-8 is anadjustable horizontal orvertical air pattern swirldiffuser, having a series ofslots in a curved radial format,within a circular or squareceiling panel. Contained in theslots are nylon deflectors,which allows the direction ofthe supply air to be alteredfrom left to right whilst alsobeing capable of adjustmentto provide a verticaldischarge. For extract use thenylon deflectors are omitted.Typical applications includemost general offices, shops orother commercial areas.Air discharge - leftAir discharge - leftVertical discharge Air discharge - right Air discharge - rightSpecificationMaterialExternal componentsconstructed from steel withinternal deflectors from nylon.Stainless steel also available,please state type of finishrequired, either polished orbrushed, and grade ofmaterial.Installation MethodsFour alternative diffuserinstallation methods areavailable as follows:Single central countersunkscrew hole in circular orsquare ceiling panel diffusers.Four corner positioncountersunk screw holes onsquare and circular ceilingpanel diffusers.Five countersunk screw holepositions for sizes 800/72 and825/72, four on edges andone central.The diffuser may also besupplied plain with no fixingsfor installation by others.Alternatively single fixing barsor angles for duct fixing are byothers.Plenum box supplied withdiffuser.When using a diffuser andplenum box combination, thediffuser is normally fixed to theplenum box by a singlecentral fixing.All installation methods requirediffuser or plenum box /diffuser combination to besupported independently.AccessoriesPurpose designed plenumbox, with spigot damper ifrequired.Filter media can be providedon extract units.FinishWhite polyester powder coatto RAL9010 (30% gloss) to allexternal surfaces, with blacknylon internal deflectors, asstandard. (White deflectorsavailable as an option).Other colours within the RALrange are also available onrequest.Size RangeModel OD-8/K1,Model OD-8/K4,Model OD-8/R1 andModel OD-8/K4Size 300/8Size 400/16Size 500/16Size 600/16Size 625/16Size 500/24Size 600/24Size 625/24Size 600/48Size 625/54Size 800/72Size 825/72(The Model OD-8/K isavailable in all sizes to suit anominal 600 x 600mm ceilinggrid).25

Model OD-8Ceiling Swirl DiffusersModel Types andDimensionsModel OD-8/K1 – swirldiffuser with radial patternslots having adjustableinternal deflectors, within asquare ceiling panel and asingle central fixing position.Model OD-8/K4 – swirldiffusers with radial patternslots having adjustableinternal deflectors, within asquare ceiling panel and fourfixing positions (one in eachcorner of ceiling plate).Model OD-8/R1 – swirldiffuser with radial patternslots having adjustableinternal deflectors, within acircular ceiling panel and asingle central fixing position.Model OD-8/R4 – swirldiffusers with radial patternslots having adjustableinternal deflectors, within acircular ceiling panel and fivefixing positions (four along theedge and one central in theceiling plate, sizes 800/72 and825/72 only).Each model type may besupplied with the differentinstallation methods, (specifyseparately as required).OD-8 K300/8OD-8 R300/8DØDD400/16, 500/16600/16, 625/16 500/24600/24, 625/24 625/54DD400/16, 500/16600/16, 625/16 500/24600/24, 625/24Size ØD D A ef (m 2 )300/8 300 298 0.009464400/16 400 398 0.018928500/16 500 498600/16 600 598625/16 625 623500/24 500 498 0.028392600/24 600 598 0.044928625/24 625 623600/48 600 598 0.056784625/54 625 623 0.063882800/72 800 798 0.101712825/72 825 823A ef (m 2 ) - effective discharge area (m 2 )DDØD ØD ØDOD-8 K600/48 800/72, 825/72OD-8 RDDD625/54600/48 800/72, 825/72ØDDDØDDØDDDC3 x C3ØD3SizeC3300/8 K 298400/16 K 398500/16 K 498600/16 K 598625/16 K 623500/24 K 498600/24 K 598625/24 K 623600/48 K 598625/54 K 623800/72 K 798825/72 K 823Size ØD3300/8 R 300400/16 R 400500/16 R 500600/16 R 600625/16 R 625500/24 R 500600/24 R 600625/24 R 625600/48 R 600625/54 R 625800/72 R 800825/72 R 82526

Ceiling Swirl DiffusersModel OD-8Ordering InformationExampleModel Type Fixing Location Function Finish SizeOD-8 K1 83 600/24Model OD-8 – swirl diffuser withcurved radial pattern slots havingadjustable internal deflectors,within a square or circular ceilingpanel.K1 – Square Diffuser –single central fixingpositionK4 – Square Diffuser –four fixing positionsR1 – Circular Diffuser –single central fixingpositionR4 – Circular Diffuser –five fixing positions (sizes800/72 and 825/72 only)Z – SupplyA – Extract(Internal deflectorsomitted on extract)83 – WhiteRAL9010Polyester Powder(30% Gloss)300/8400/16500/16600/16625/16500/24600/24625/24600/48625/54800/72825/72(Please state separatelyif no fixings are required.)Important Note: If the overall size is critical then it must be clearly stated on the order.All orders must be addressed to AIR DIFFUSION, Ruskin Air Management Limited.Performance DataHLQ∆tzA,B∗V H1∆t LQ∆tzLx1.8mH1V L∆t L∗Q (m 3 /h) Air flowx (m) Horizonal distance to the wallH (m) Room heightH1 (m) Distance from ceiling to occupied zoneL (m) Throw distance (L=H1 + x)V L (m/s) Air velocity at the throw distance L∆t z (K) Temperate difference between the supplyand room air∆t L (K) Difference between the core and room airtemperature∆p t (Pa) Pressure dropL WA (db(A)) Sound power levelV H1 (m/s) Air velocity at the H1 distanceA, B (m) Distance between diffusers by length andby widthContinued on next page27

Model OD-8Ceiling Swirl DiffusersPerformance Data ContinuedAir velocity at the throw distances and temperature quotient (with ceiling effect)V H1 (m/s)Size 300/8 Size 300/8 Size 300/8B>4m B>2.5 3.5mH1= 1 1.4 2 H1= 1 1.4 2A = 1 20.250.200.150.100.05Q (m 3 /h) 2001501007050V H1 (m/s)0.250.200.150.100.05Q (m 3 /h) 2001501007050V H1 (m/s)0.500.400.300.200.150.10Q (m 3 /h) 20015010070500.070.060.500.040.030.02temperature quotient ∆t L / ∆t Z1 1.5 2 3 4distance A (m)1 1.5 2 3 4distance A (m)0.5 1 1.5 2 3 4distance L (m)V H1 (m/s)Size 400/16, 500/16, 600/16, 625/16 Size 400/16, 500/16, 600/16, 625/16 Size 400/16, 500/16, 600/16, 625/16B>4m B>2.5 3.5mH1= 1 1.4 2 H1= 1 1.4 2 A= 1 20.350.300.250.200.15Q (m 3 /h) 600500400300V H1 (m/s)0.350.300.250.200.15Q (m 3 /h) 200500400200V H1 (m/s)0.50 0.070.400.060.500.300.040.200.150.10200100 Q (m 3 /h)5004003000.030.02temperature quotient ∆t L / ∆t Z0.102000.101000.5 1 1.5 2 3 4distance L (m)1 1.5 2 3 4distance A (m)1 1.5 2 3 4distance A (m)V H1 (m/s)Size 500/24 Size 500/24 Size 500/24B>4m B>2.5 3.5mH1= 1 1.4 2 1.4 2A= 10.250.150.100.05Q (m 3 /h) 500400300200100V H1 (m/s)0.250.150.100.05Q (m 3 /h) 500400300200100V H1 (m/s)0.800.600.500.400.300.200.150.102Q (m 3 /h) 6004003002001000.200.160.120.100.080.060.040.030.020.5 1 1.5 2 3 4distance L (m)temperature quotient ∆t L / ∆t Z1 1.5 2 3 4distance A (m)1 1.5 2 3 4distance A (m)V H1 (m/s)Size 600/24, 625/24 Size 600/24, 625/24 Size 600/24, 625/24B>4m B>2.5 3.5mH1= 1 1.4 2 H1= 1 1.4 2 A=1 20.350.300.250.200.150.10600500400Q (m 3 /h) 8003001 1.5 2 3 4distance A (m)V H1 (m/s)0.350.300.250.200.150.10Q (m 3 /h) 8005004003002001 1.5 2 3 4distance A (m)v L (m/s)0.700.600.500.400.300.200.150.10Q (m 3 /h) 8006005004003002000.5 1 1.5 2 3 4distance L (m)0.140.120.100.080.060.050.040.030.02temperature quotient ∆t L / ∆t Z28

Ceiling Swirl DiffusersModel OD-8Performance Data ContinuedAir velocity at the throw distance and temperature quotient (with ceiling effect)v L (m/s)v H1 (m/s)v H1 (m/s)H1=10.600.500.400.300.200.150.10Size 600/48 Size 600/48 Size 600/48B > 4m1.6 2Size 625/54 Size 625/54 Size 625/54B > 4mH1= 1 1.6 20.600.500.400.300.200.150.101 2 3 4 1 2 3 4distance L (m)distance L (m)Size 800/72, 825/72B > 4mH1= 1 1.6 20.400.300.200.151600140010007004003001 2 3 4distance L (m)160014001000700400300Q (m 3 /h) 1600140012001000900800700600v L (m/s)v H1 (m/s)v H1 (m/s)H1=10.600.500.400.300.200.150.10B=2.5 ... 3.5m1.6 2160014001000700400300B=2.5 ... 3.5mH1= 1 1.6 2A= 1 20.600.500.400.300.200.150.10160014001000700400300Size 800/72, 825/72A=1 20.700.600.500.400.30B=2.5 ...3.5mB=2.5 ...3.5mH1= 1 1.6 2 A= 1 20.600.500.400.300.201 2 3 4distance L (m)Q (m 3 /h) 16001400120010009008007006000.200.150.107004003001 1.5 2 3 4 5distance L (m)Q (m 3 /h) 160014001000700400300Q (m 3 /h) 160014001000Size 800/72, 825/720.350.300.250.200.15v L (m/s)v L (m/s)temperature quotient ∆t L / ∆t Z temperature quotient ∆t L / ∆t Zv L (m/s)temperature quotient ∆t L / ∆tZ0.700.600.500.400.300.200.150.100.800.600.500.400.300.201 1.5 2 3 4 5distance L (m)Q (m 3 /h) 160012008006000.100.080.050.350.300.250.200.150.100.080.050.140.120.100.080.060.050.040.030.101 2 3 4distance L (m)0.151 2 3 4distance A (m)0.151 3 4 5 6distance L (m)0.0229

Model OD-8Ceiling Swirl DiffusersPerformance Data ContinuedPressure drop and sound power level diagrams (spigot damper angle 90° - opened 45° - half opened). With plenum box havingequalising grid.OD-8/V300/8 top entry spigotOD-8/VOD-8/VSPG damper position 400/16, 500/16, 600/16, 625/16damper 500/24damperv L (dB(A))60555045403530252045°90°100806043352517138∆Pt (Pa)L WA (dB(A))60555045403530252045°90°100806043352517138∆Pt (Pa)L WA (dB(A))60555045403530252045°90°100806043352517127∆Pt (Pa)100 200 300 400 500Q (m 3 /h)OD-8/S100 200 300 400 500Q (m 3 /h)OD-8/V250 350 500 650 80Q (m 3 /h)OD-8/S400/16, 500/16. 600/16, 625/16 side entry spigot damper 400/16, 500/16, 600/16, 625/16damper 500/24damperv L (dB(A))60555045403530252045°90°100806043352517138∆Pt (Pa)L WA (dB(A))60555045403530252045°90°100806043352517138∆Pt (Pa)L WA (dB(A))60555045403530252045°90°100806043352517127∆Pt (Pa)100 200 300 400 500Q (m 3 /h)OD-8/S400/16, 500/16. 600/16, 625/16 side entry spigot100 200 300 400 500OD-8/VQ (m 3 /h)600/48250 350 500 650 80OD-8/VQ (m 3 /h)625/54v L (dB(A))605550454035302520flap45°90°100806040322516106∆Pt (Pa)L WA (dB(A))60555045403530252045°flap90°100807060423021156∆Pt (Pa)L WA (dB(A))60555045403530252045°flap90°100807060423021156∆Pt (Pa)200 400 500 600 700 800 1000 300 400 500 600 700 800 1200Q (m 3 /h)Q (m 3 /h)OD-8/SOD-8/S600/24, 625/24 side entry spigot600/48300 400 500 700 1000 1200 1500Q (m 3 /h)OD-8/S625/54v L (dB(A))605550454035302520flap45°90°100806540322516108∆Pt (Pa)L WA (dB(A))60555045403530252045°flap90°100807060423021156∆Pt (Pa)L WA (dB(A))60555045403530252045°flap90°100807060423021156∆Pt (Pa)300 400 500 600 700 800 1000Q (m 3 /h)OD-8/V800/72, 825/72 top entry spigot300 400 500 600 700 800 1200Q (m 3 /h)OD-8/S800/72, 825/72300 400 500 700 1000 1200 1500Q (m 3 /h)v WA (dB(A))60555045403530flap45°90°100907050352015∆Pt (Pa)L WA (dB(A))6055504540353045°flap90°110907050352015∆Pt (Pa)2510251020720730600 800 1000 1300 1500 2000Q (m 3 /h)500 800 1000 1300 1500 2000Q (m 3 /h)

Ceiling Swirl DiffusersModel OD-9Model OD-9 Horizontal or Vertical Air Pattern Ceiling Swirl DiffuserVertical dischargeAir discharge - rightAir discharge - lefta. swirl effectb. one-way discharge c. two-way dischargeModel OD-9DescriptionThe Model OD-9 is anadjustable horizontal orvertical air pattern swirldiffuser having a series ofslots in a straight radialformat, within a circular orsquare ceiling panel.Contained in the slots arenylon deflectors, which allowsthe direction of the supply airto be altered from left to rightwhilst also being capable ofadjustment to provide avertical discharge. For extractuse the nylon deflectors areomitted. Typical applicationsinclude most general offices,shops or other commercialareas.Air discharge - leftAir discharge - leftVertical discharge Air discharge - right Air discharge - rightSpecificationMaterialExternal componentsconstructed from steel withinternal deflectors from nylon.Stainless steel also available,please state type of finishrequired, either polished orbrushed, and grade ofmaterial.Installation MethodsFour alternative diffuserinstallation methods areavailable as follows:Single central countersunkscrew hole in circular orsquare ceiling panel diffusers.Four corner positioncountersunk screw holes onsquare and circular ceilingpanel diffusers.Five position countersunkscrew holes for sizes 800/72and 825/72, four on edgesand one central.(Note: Fixing using fourcountersunk screw holes isrecommended for sizes 600,625 and 800).The diffuser may also besupplied plain with no fixingsfor installation by others.Alternatively single fixing barsor angles for duct fixing are byothers.Plenum box supplied withdiffuser.When using a diffuser andplenum box combination, thediffuser is normally fixed to theplenum box by a singlecentral fixing.All installation methods requirediffuser or plenum box /diffuser combination to besupported independently.AccessoriesPurpose designed plenumbox, with spigot damper ifrequired.Filter media can be providedon extract units.FinishWhite polyester powder coatto RAL9010 (30% gloss) to allexternal surfaces, with blacknylon internal deflectors, asstandard. (White deflectorsavailable as an option).Other colours within the RALrange are also available onrequest.Size RangeModels OD-9/KR,OD-9/KK andOD-9/RRSize 310Size 400Size 500Size 600Size 625Size 80031

Model OD-9Ceiling Swirl DiffusersModel Types and DimensionsModel OD-9/KR1 – swirldiffuser with radial patternstandard slots havingadjustable internal deflectors,within a square ceiling paneland a single central fixingposition.Model OD-9/KR4 – swirldiffusers with radial patternstandard slots havingadjustable internal deflectors,within a square ceiling paneland four fixing positions (onein each corner of ceilingplate).OD-9/KR OD-9/RR OD-9/KKSize 310308Ø310308 308Size 400398Ø400398 398308398Model OD-9/KK1 – swirldiffuser with radial patternextended slots havingadjustable internal deflectors,within a square ceiling paneland a single central fixingposition.Size 500498Ø500498Model OD-9/KK4 – swirldiffusers with radial patternextended slots havingadjustable internal deflectors,within a square ceiling paneland four fixing positions (onein each corner of ceilingplate).Model OD-9/RR1 – swirldiffuser with radial patternslots having adjustableinternal deflectors, within acircular ceiling panel and asingle central fixing position.Size 600.625498 498598.623Ø600.625598.623 598.623598.623Model OD-9/RR4 – swirldiffusers with radial patternslots having adjustableinternal deflectors, within acircular ceiling panel and fivefixing positions (four along theedge and one central in theceiling panel, sizes 800/72and 825/72 only).Size 800798Ø800798Each model type may besupplied with the differentinstallation methods, (specifyseparately as required).798 79832

Ceiling Swirl DiffusersModel OD-9Model Types and Dimensions Continued20 2020MSize A M B A ef /K A ef /R310 308 59 190 0.0192 0.0120400 398 64 270 0.0248 0.0248ABABB500 498 64 370 0.0517 0.0392600 598 69 460 0.0718 0.0565625 623 81.5 460 0.0718 0.0565800 798 124 550 0.1359 0.0938MA ef - effective discharge area (m 2 )A SquareA SquareSection A - AØ6.5Section B - BØ6.599Fastening with four screwsCentral fasteningC3 x C3ØD3SizeC3310 KR, KK 308400 KR, KK 398500 KR, KK 498600, 625 KR KK 598, 623800 KR, KK 798SizeØD3310 RR 310400 RR 400500 RR 500600, 625 RR 600, 625800 RR 800Ordering InformationExampleModel Type Fixing Location & Slot Arrangement Function Finish SizeOD-9 KK1 83 600Model OD-9 – swirldiffuser with radialpattern slots havingadjustable internaldeflectors, within asquare or circularceiling panel.KR1 – Square Diffuser – single central fixing positionKR4 – Square Diffuser – four fixing positionsKK1 - Square Diffuser – single central fixing positionKK4 - Square Diffuser – four fixing positionsRR1 – Circular Diffuser – single central fixing positionRR4 – Circular Diffuser – five fixing positions (sizes800/72 and 825/72 only)(Note: Fixing using four countersunk screw holes isrecommended for sizes 600, 625 & 800). See separateillustration to view arrangement of slots.Z – SupplyA – Extract(Internal deflectorsomitted on extract)83 – White RAL9010Polyester Powder(30% Gloss)Alternative colourswithin the RAL colourrange, also available.(Subject to therelevant quantitysurcharge).310400500600625800(Please state separately if no fixings are required.)Important Note: If the overall size is critical then it must be clearly stated on the order.All orders must be addressed to AIR DIFFUSION, Ruskin Air Management Limited.33

Model OD-9Ceiling Swirl DiffusersPerformance DataHLQ∆tzA,B∗V H1∆t LQ∆tzLx1.8mH1V L∆t L∗Q (m 3 /h) Air flowx (m) Horizonal distance to the wallH (m) Room heightH1 (m) Distance from ceiling to occupied zoneL (m) Throw distance (L=H1 + x)V L (m/s) Air velocity at the throw distance L∆t z (K) Temperate difference between the supplyand room air∆t L (K) Difference between the core and room airtemperature∆p t (Pa) Pressure dropL WA (db(A)) Sound power levelV H1 (m/s) Air velocity at the H1 distanceA, B (m) Distance between diffusers by length andby widthAir velocity at the throw distance and temperature quotient (with ceiling effect).v H1 (m/s)OD-9/KK size 310B ≥ 4mH1=0.8 1 1.4 1.6 20.250.200.150.100.05100400300200500 Q (m 3 /h)v H1 (m/s)OD-9/KR, RR size 310B ≥ 4mH1=0.8 1 1.4 20.252.200.152.100.05Q (m 3 /h) 500400300200100v H1 (m/s)OD-9/KK size 310A=1 20.500.400.300.200.150.10100∆ L /∆t zQ (m 3 /h) 5004003002000.070.060.050.040.030.02temperature quotient ∆ L /∆t z0.5 1 1.5 2 3 41 1.5 2 3 4 1 1.5 2 3 4distance A(m) distance A(m) distance L(m)34

Ceiling Swirl DiffusersModel OD-9Performance Data ContinuedAir velocity at the throw distances and temperature quotient (with ceiling effect).v H1 (m/s)OD-9/KR, RR size 310B≥4mH1=0.8 1 1.4 20.252.200.150.100.05100Q (m 3 /h) 500400300200v H1 (m/s)OD-9/KR, RR size 310B≥4mH1=0.8 10.252.200.150.100.051.4 1.6 2500 Q (m 3 /h)400300200100v L (m/s)OD-9/KR, RR size 310A=1 20.500.400.300.200.15100(m 3 /h) 500400300200∆ L /∆t z0.070.060.050.040.030.02temperature quotient ∆ L /∆t z0.101 1.5 2 3 4 1 1.5 2 3 4 0.5 1 1.5 2 3 4distance A(m)distance A(m)distance L(m)OD-9/KK size 400B≥4mH1=0.8 1 1.42OD-9/KK size 400B≥4mH1=0.8 1 1.4 2OD-9/KK size 400A=1 20.500.40Q (m 3 /h) 5004000.070.060.05Q (m 3 /h) 500v H1 (m/s)v H1 (m/s)0.350.300.250.200.15OD-9/KR, RR size 400B≥4mH1=0.8 1 1.4 20.250.150.100.05200400300Q (m 3 /h) 5001 1.5 2 3 4distance A(m)Q (m 3 /h) 500400300200v H1 (m/s) v H1 (m/s)0.350.300.250.200.15OD-9/KR, RR size 400B≥4mH1=0.8 1 1.40.250.150.100.0522003004001 1.5 2 3 4distance A(m)Q (m 3 /h) 500400300200v L (m/s)v L (m/s)0.300.200.150.100.800.600.500.400.300.200.15OD-9/KR, RR size 400A=1 2 2.5200∆ L /∆t z0.5 1 1.5 2 3 4distance L(m)200Q (m 3 /h) 5004003003000.040.030.020.200.160.120.100.080.060.040.03temperature quotient ∆ L /∆t ztemperature quotient ∆ L /∆t z1 1.5 2 3 4distance A(m)1 1.5 2 3 4distance A(m)0.10∆ L /∆t z0.020.5 1 1.5 2 3 4distance L(m)35

Model OD-9Ceiling Swirl DiffusersPerformance Data ContinuedAir velocity at the throw distances and temperature quotient (with ceiling effect).v H1 (m/s)OD-9/KK size 510 OD-9/KK size 500B ≥ 4mB ≥ 4mH1=0.8 1 1.4 2H1=0.8 1 1.4 20.350.300.250.20400Q (m 3 /h) 1000800600v H1 (m/s)0.350.300.250.20Q (m 3 /h) 1000800600400v L (m/s)OD-9/KK size 500A=12 2.50.700.600.500.40∆ L /∆t z0.300.20Q (m 3 /h) 10008006004000.140.120.100.080.060.050.040.03temperature quotient ∆ L /∆t z0.150.150.150.021 1.5 2 3 4distance A(m)0.101 1.5 2 3 4 0.5 1 1.5 2 3 4distance A(m)distance L(m)v H1 (m/s)OD-9/KR, RR size 500 OD-9/KR, RR size 500B ≥ 4mB ≥ 4mH1=0.8 1 1.4 2H1=0.8 1 1.4 2H1=1 1.6 2 H1=1 1.6 2OD-9/KR, RR size 500A=1 2 2.50.200.160.800.120.250.250.600.100.500.080.400.150.15∆ L /∆t z0.350.060.100.100.040.200.050.050.150.031 1.5 2 3 41 1.5 2 3 40.100.5 1 1.5 2 30.024distance A(m)distance A(m)distance L(m)OD-9/KK, size 600 OD-9/KK, size 600B ≥ 4mB ≥ 4mQ (m 3 /h) 1000800600400v H1 (m/s)Q (m 3 /h) 1000800600400v L (m/s)OD-9/KK, size 600Q (m 3 /h) 1000800600400temperature quotient ∆L /∆t zv H1 (m/s)0.600.500.400.300.200.15Q (m 3 /h) 13001100900700v H1 (m/s)0.600.500.400.300.200.15Q (m 3 /h) 13001100900700v L (m/s)A=1 20.700.600.500.400.300.20Q (m 3 /h) 130011009007005000.350.300.250.200.160.100.08temperature quotient ∆ L /∆t z0.100.100.15∆ L /∆t z0.051 2 3 4 1 2 3 4distance A(m)distance A(m)0.101 1.5 2 3 4 5distance L(m)36

Ceiling Swirl DiffusersModel OD-9Performance Data ContinuedAir velocity at the throw distances and temperature quotient (with ceiling effect).v H1 (m/s)OD-9/KR, RR size 600 OD-9/KR, RR size 600B≥4mH1=0.8 1 1.4 20.350.300.250.20Q (m 3 /h) 11001000900700v H1 (m/s)B≥4mH1=0.8 H1=1 1.4 20.350.300.250.20Q (m 3 /h) 1000900700500v L (m/s)0.700.600.500.400.300.20OD-9/KR, RR size 600A=12 2.5∆ L /∆t zQ (m 3 /h) 130011009007005000.140.120.100.080.060.050.040.03temperature quotient ∆ L /∆t z0.150.150.150.021 1.5 2 3 4distance A(m)0.101 1.5 2 3 4 0.5 1 1.5 2 3 4distance A(m)distance L(m)v H1 (m/s)OD-9/KR, RR size 500B≥4mH1=0.8 1 1.6 20.400.030.200.15500800Q (m 3 /h) 2000170014001100v H1 (m/s)OD-9/KK size 800B≥4mH1=0.8 1 1.6 20.400.300.200.15Q (m 3 /h) 2000170014001100500800v L (m/s)OD-9/KK size 800A=1 2 2.50.800.600.500.400.300.20Q (m 3 /h) 2000170014001100800500∆ L /∆t z0.140.120.100.080.060.050.040.03temperature quotient ∆ L /∆t z1 2 3 4distance A(m)1 2 23 4 0.152 3 4 5 6distance A(m)distance L(m)0.02OD-9/KR, RR size 800B≥4mH1=0.8 1.6 1.6 2OD-9/KR, RR size 800B≥4mH1=0.8 1 1.6 2OD-9/KR, RR size 800v H1 (m/s)0.400.300.20Q (m 3 /h) 2000170014001100800500v H1 (m/s)0.400.300.20500170014001100800Q (m 3 /h) 2000v L (m/s)0.800.600.500.400.30A=1 2 2.5∆ L /∆t z0.140.120.100.080.060.050.04temperature quotient ∆ L /∆t z0.150.150.20Q (m 3 /h) 2000-1700160011008005000.031 2 3 4 1 2 3 4distance A(m)distance A(m)0.152 3 4 5distance L(m)0.0237

Model OD-9Ceiling Swirl DiffusersPerformance Data ContinuedPressure drop and sound power levelSpigot damper angle: 90° - opened, 45° - half opened.OD-9/K size 310 OD-9/K size 310 OD-9/K size 400 OD-9/K size 400flap flap flap flap150150150150∆pt(Pa)1007050403020closedopened30 35 Lw(db(A))40 45 50∆pt(Pa)1007050403020closedLw(db(A))opened 30 35 40 45 50∆pt(Pa)1007050403020closedLw(db(A))30 35 4045∆pt(Pa)1007050403020253035Lw(db(A))closed4045 5010100 150200 300Q(m 3 /h)400 45010100 150 200 300 400 450Q(m 3 /h)10opened25100 150 200 300 400 450Q(m 3 /h)10opened100 150 200 300 400 450Q(m 3 /h)∆pt(Pa)150100705040302010OD-9/K size 500 OD-9/K size 500Lw(db(A))35 40 45openedclosedflap300 400 500 600 700 800 1000 1200Q(m 3 /h)∆pt(Pa)150100705040302010300Lw(db(A))30 35 40 45 closedopenedflap400 500 600 700 800 1000 1200Q(m 3 /h)∆pt(Pa)1501007050403020100OD-9/K size 600.625 OD-9/K size 600, 625Lw(db(A))flap30 35 40 45 closedopened400 500 600 800 1000 1500Q(m 3 /h)∆pt(Pa)150100705040302010closedLw(db(A))30 35 40 45openedflap300 400 500 600 800 1000 1500Q(m 3 /h)150100906070605040302010OD-9/K size 800 OD-9/K size 800closedopened3035 40 45Lw(db(A))flap15010090607060504030201030 35 40 45Lw(db(A))closedflapopened100 650 800 1000 1500 2000 3000Q(m 3 /h)100 650 800 1000 1500 2000 3000Q(m 3 /h)38

Ceiling Swirl DiffusersModel OD-11Model OD-11 Variable Air Pattern Ceiling Swirl DiffuserDischarge type by coolingDischarge type by heating(When using a diffuser andplenum box combination, thediffuser is normally fixed to theplenum box through thespigot)All installation methods requirediffuser or plenum box /diffuser combination to besupported independently.Model OD-11DescriptionThe Model OD-11 is avariable air pattern swirldiffuser having a set ofmovable inner vanes to alterthe angle of discharge fromhorizontal to vertical, which isimperative to ensure optimumheating and cooling function.By regulating the inner vanes,varying throw discharges canbe achieved from fullyhorizontal to verticalprojection, which is importantin the heating mode. Toaccomplish this adjustmenttwo types of control areoffered, manual or electricmotor operation. Suppliedwith a circular outer tubecasing having a flush flangeand a set of movable innervanes. Typical applicationsinclude shopping malls,exhibition halls and other largeopen spaces with mountingheights of between 3 m to12m, where large air volumesand temperature differentialsare required.SpecificationMaterialOuter tube casingconstructed from aluminiumManual handle (RR)sheet with other componentsfrom sheet steel.Installation MethodsTwo alternative installationmethods are available asfollows:Direct Spigot Connection toduct.Plenum box supplied withdiffuser.1. Handle2. Fixing screwFinishWhite polyester powder coatto RAL9010 (30% gloss)Other colours are alsoavailable on request.Size RangeModel OD-11Size 125Size 160Size 200Size 250Size 315Size 400Size 500Size 630AccessoriesPerforated diffusion plateManual operating handleElectric motor operationPurpose designed plenumbox, with spigot damper ifrequired.Model Types andDimensionsModel OD-11 / R – circularvariable swirl diffuser withindividual manual adjustmentof the inner vane assembly.Model OD-11V/ / RR –circular variable swirl diffuserwith manual handleadjustment for gangedoperation of the inner vaneassembly.Model OD-11V/ / B1 –circular variable swirl diffuserwith electric motor adjustmentfor ganged operation of theinner vane assembly (LM 24motor).Model OD-11V/ / B2 –circular variable swirl diffuserwith electric motor adjustmentfor ganged operation of theinner vane assembly (LM 230motor.Model OD-11V/ / B3 –circular variable swirl diffuserwith electric motor adjustmentfor ganged operation of theinner vane assembly (LM 24-SR motor).Additional motor types B4 toB10 also available, seeordering information for typeand voltage.(Note: Motor types B4 to B10are as shown with theexception of size 630 wherean NM type motor is usedand size 800 where an AMtype motor is used).Each model may be fittedwith a perforated diffusionplate.DimensionsØDActuatorCC1ØD2Size ØD ØD2 C C1 A ef /m 2125 125 205 130 40 0.012160 160 155 250 40 0.020200 200 310 174 40 0.030250 250 400 200 40 0.048315 315 480 240 40 0.077400 400 615 265 55 0.125500 500 780 320 60 0.195630 630 940 380 80 0.310800 800 1142 555 75 0.503A ef - effective discharge area (m 2 )39

Model OD-11Ceiling Swirl DiffusersOrdering InformationExampleModel Type Perforated Diffusion Plate Control Type & Accessories Finish SizeOD-11V P RR 83 400Model OD-11 circularvariable swirl diffuserwith individual manualadjustment of the innervanes.Model OD-11Vcircular variable swirldiffuser with manual ormotorised adjustmentof the inner vanesassembly gangedtogether.O – no plateP – perforateddiffusion plateR – individual manual controlRR – manual handle fitted onoutside of diffuser casingB1 – electric control LM 24B2 – electric control LM 230B3 – electric control LM 24-SRB4 – electric control NM24B5 – electric control NM230B6 – electric control NM24 SRB7 – electric control AM24B8 – electric control AM230B9 – electric control AM24 SRB10 – electric control AM230 SR83 – WhiteRAL9010Polyester Powder(30% Gloss)Alternative colourswithin the RALcolour range, alsoavailable. (Subjectto the relevantquantitysurcharge)125160200250315400500630800Important Note: If the overall size is critical then it must be clearly stated on the order.All orders must be addressed to AIR DIFFUSION, Ruskin Air Management Limited.Performance DataHLQ∆tzA,B∗V H1∆t LQ∆tzLx1.8mH1V L∆t L∗Q (m 3 /h) Air flowx (m) Horizonal distance to the wallH (m) Room heightH1 (m) Distance from ceiling to occupied zoneL (m) Throw distance (L=H1 + x)V L (m/s) Air velocity at the throw distance L∆t z (K) Temperate difference between the supplyand room air∆t L (K) Difference between the core and room airtemperature∆p t (Pa) Pressure dropL WA (db(A)) Sound power levelV H1 (m/s) Air velocity at the H1 distanceA, B (m) Distance between diffusers by length andby width40

Ceiling Swirl DiffusersModel OD-11Performance Data ContinuedDiagram for fast selectionOD-11V size 125OD-11V size 160OD-11V size 200OD-11V size 250OD-11V size 315Blade angle 45°25 - 35 dB(A)35 - 45 dB(A)CorrectionsIn the case of the diffuser installation inthe ceiling, the velocity Vh at the levelA/2+H is to be multiplied with a factorof 1.4 (due to the Coanda effect). Theabove applies to the cases of heatingand cooling operation with bladeopening angles less than 30°.OD-11V size 400OD-11V size 500OD-11V size 630OD-11V size 800213100 200 300 500 1000 2000 3000 5000 8000Examples for selection 1, 2 and 3: see the following pages0°25°45°Diffuser size as a function of distancebetween units and effective velocity80063050040031525020016012520151075432Recommended size A, B (m)45°90°110 5 4 3 2 1 0.5Vet (m/s)Blade opening angle during heating and cooling operationOD-11V size 125COOLING50°45°40°35°30°Blade angle∆T z0 °K-2 °K-5 °K-10 °K-15 °KExample 1 (cooling)Q = 120m 3 /hH = 4mH1 = H-1, 8 = 4-1, 8 = 2.2mV H1 = 0.2m/s∆T z = -10 °KRecommended size: 1250.6 1 2 3 0.03 0.04 0.05 0.10H1 (m)V H1 /V efHEATING∆Tz+5°K+10°K+15°K0.1545°50°60°70°90°V ef = Q/A ef x 3600 = 120/0.012 x 3600V ef = 2.7 m/sV H1 /V ef = 0.2/2.7 = 0.074Blade angle: 46°Example 1 (heating)Q = 120m 3 /hH = 4m → H1 = 2.2mV H1 = 0.2m/s∆T z = +10 °KRecommended size: 125V ef= 2.7m/sBlade angle: 80°+30°K54 3 2 1 0.6 1 2 3 4 5v ef (m/s)H1 (m)41

Model OD-11Ceiling Swirl DiffusersPerformance Data ContinuedBlade opening angle during heating and cooling operationOD-11V size 160COOLING Blade angle50°45°40°∆T z0 °K-2 °K-5 °K-10 °K-15 °K35°30°1 2 3 0.03 0.04 0.05 0.10H1 (m)V H1 /V efHEATING0.1545°∆Tz+5°K+10°K+15°K50°60°70°90°+30°K54 3 2 1 1 2 3 4 5v ef (m/s)H1 (m)OD-11V size 200COOLING Blade angle50°45°40°35°30°∆T z0 °K-2 °K-5 °K-10 °K-15 °KExample 2 (cooling)Q = 350m 3 /hH1 = 1.4mV H1 = 0.15m/s∆T z = -8 °KRecommended size:: 200V ef = Q/A ef x 3600 = 350/0.031 x 3600V ef = 3.13m/sV H1 /V ef = 0.15/3, 24 = 0.046Blade angle: 32°∆T z+5°K+10°K+15°K1 2 3 4 5 6 0.03 0.04 0.05 0.10 0.15H1 (m)V H1 /V efHEATING45° 50°60°70°90°Blade angle: 32° → Coanda effect)H1 = 1.4 x 1.4 = 1.96mH = H1 + 1.8 = 1.96 + 1.8 = 3.67morH = 1.4 → V H1 = 0.15 x 1.4 = 0.25m/s+30°K754 3 2 1 2 3 410v ef (m/s)H1 (m)42

Ceiling Swirl DiffusersModel OD-11Performance Data ContinuedBlade opening angle during heating and cooling operationOD-11V size 250OD-11V size 315COOLING45°50°40°35°Blade angle∆T z0 °K-2 °K-5 °K-10 °K-15 °KCOOLING45°40°35°50°Blade angle∆Tz0 °K-2 °K-5 °K-10 °K-15 °K30°30°1HEATING∆Tz+5°K+10°K+15 °K2 3 4 5 7 0.03 0.04 0.05 0.10H1 (m)V H1 /V ef45°0.1550°60°70°90°∆Tz+10°K+15 °K-+30 °K1 2 3 4 5 8 0.03 0.04 0.05 0.10H1 (m)V H1 /V efHEATING+5°K 45°0.1550°60°70°90°-+30 °K7 5 4 3 2 1 2 3 4 5 10v ef (m/s)H1 (m)10 5 4 3 2 1 2 3 4 5 10v ef (m/s)H1 (m)OD-11V size 400OD-11V size 500COOLING Blade angle40° 45° 50°35°∆T z0 °K-2 °K-5 °K-10 °K-15 °K35°30°COOLING40° 45° 50°Blade angle∆Tz0 °K-2 °K-5 °K-10 °K-15 °K30°∆T z+10° K+15° K1 2 3 4 5 10 0.03 0.04 0.05 0.10 0.15HEATINGH1 (m)V H1 /V ef+5°K 45°50°1 2 3 4 5 10 0.03 0.04 0.05 0.10 0.15H1 (m)VH1/V efHEATING∆T z +10°K +5°K45°+15°K50°+30 °K60°70°+30 °K60°70°90°90°10 5 4 3 2 1 2 3 4 5 10v ef (m/s)H1 (m)10 5 4 3 2 1 2 3 4 5 10v ef (m/s)H1 (m)43

Model OD-11Ceiling Swirl DiffusersPerformance Data ContinuedBlade opening angle during heating and cooling operationOD-11V size 630COOLING Blade angle35° 40° 45° 50°30°∆T z0 °K-2 °K-5 °K-10 °K-15 °KExample 3 (cooling)Q = 2700m 3 /hV H1 = 0.2m/s∆T z = -10 °KH1 = 9m→ H1=9-1.8 = 7.2mRecommended size: 630V ef = Q/A ef x 3600 = 2700/0.32 x 3600V ef = 2.3m/sV H1 /V ef = 0.2/2.3 = 0.08Blade angle: 43°∆T z+15 °K+30 °K1 2 3 4 5 10 0.03 0.04 0.050.10 0.15H1 (m)V H1 /V efHEATING+10 °K +5 °K45 °50 °60 °70 °90 °10 5 4 3 2 1 2 3 4 5 10v ef (m/s)H1 (m)OD-11V size 800COOLING Blade angle35° 40° 45° 50°30°∆T z0 °K-2 °K-5 °K-10 °K-15 °K∆Tz+10°K+15°K1 2 3 4 5 10 0.03 0.04 0.050.10 0.15H1 (m)V H1 /V efHEATING+5 °K45°50°60°70°90°10 5 4 3 2 1 0.6 1 2 3 4 5 10V ef (m/s)H1 (m)44

Ceiling Swirl DiffusersModel OD-11Performance Data ContinuedPressure drops and sound power level (for version with dispersing plate)OD-11V Size 125 - 800PRESSURE DROPS AND SOUND POWER LEVELV ef (m/s)10754321.5125 160 200 250 315 400 50063080023252045403530L WA (dB(A))505590° 60° 50° 45°40°35°30°1100 200300 400 500 700 1000 1500 2000 3000 5000 7000 10000 1Q (m 3 /h)Example 2 (cooling)Q = 350m 3 /hL WA = 48 dB(A)∆p = 77PaBlade angle: 32°2 3 4 5 7 10 20 50 100 100∆p t (Pa)Example 3 (cooling)Q = 2700m 3 /hL WA = 37 dB(A)∆p = 16PaBlade angle: 43°3412T2T1T1 - air temperature in the duct (°C)T2 - air temperature in the room (°C)T1 < T2 cooling - the blade angle is towards 0°T1 > T2 heating - the blade angle is towards 90°1OD-11V with the ADT-1 thermostat with analogue outputDescriptionThe ADT-1 differential thermostat with continuous analogueoutput is a controller that based on the duct air temperatureand room temperature signals automatically adjusts the angleof OD-11V blades as required. One ADT-1 can operate up to10 OD-11 units.OperationThe controller compares the selected temperature curve, whichis set according to the OD-11V position, desired mode ofoperation, etc, with data received from temperature sensorslocated in the air supply duct and in the room. taking intoaccount the desired temperature difference, the controllergenerates a continuous analogue 0-10V DC output signal,which is then transmitted to the OD-11V electric motor drive.comparing the temperature, the controller automaticallyrecognises the heating or cooling mode and sets the OD-11Vaccordingly. In the case the duct air temperature is higher thanthe room temperature, the controller switches the DC-V11 tothe heating mode, ie. to the vertical supply of warm air into theroom. In the case the duct air temperature is lower than theroom temperature, the controller automatically infers that thesystem in the room cooling mode and accordingly generates asignal to set the OD-11V to the cooling mode.AdvantageApplying ADT-1, the need for manual switching of a largenumber of OD-11V units to the proper operational mode isavoided, since the controller switches the units automatically. Inthis way, the efficiency of room air conditioning is enhanced aswell.ADT-1 differential thermostat1. controller2. room temperature sensor3. duct temperature sensor4. Belimo LM24-SRFor the size 630, appropriate motor type is NMFor the size 800, appropriate motor type is AM45

Air Diffusion - Product RangeProduct RangeSwirl, Displacement and High Induction DiffusersCircular Diffusers andAir ValvesPerforated and Louvre Face Ceiling DiffusersSlot and Fixed Blade DiffusersCylinder and Jet Nozzle DiffusersFloor Grilles46

Air Diffusion - Product RangeProduct RangeLinear GrillesGrillesExternal Louvres● Swirl, Displacement and High Induction Diffusers● Perforated and Louvre Face Ceiling Diffusers● Slot and Fixed Blade Linear Diffusers● Cylinder and Jet Nozzle Diffusers● Circular Diffusers and Air Valves● Floor Grilles● Linear Bar GrillesMiscellaneous● Grilles● External Louvres● Miscellaneous47

CREATIVE AIR SOLUTIONSTelephone 0845 095 1212 Facsimile: (01707) 294170International Code: +441707 Email: sales@air-diffusion.co.uk Website: www.air-diffusion.co.ukPart of Ruskin Air Management Limited