A4 Diff - Circular Ceiling.QXD - Scottaire

DIFFUSERS-Circular CeilingCIRCULAR CEILINGDIFFUSERSThe range of circular ceiling diffusers are designed for heatingand cooling applications in spaces where the mounting heightdoes not exceed 3 metres. However, it is recommended thatthe core position is adjusted on change over from the heatingcycle to the cooling cycle and vice versa if they are used in afree space application without coanda effect. Consequently,Code 0530, which have a fixed core, should only be used oncooling applications if they are used on exposed ductwork.STANDARD •Code 0530. Multi cone, fixed one position core, circulardiffuser. Requires a mounting bridge if it is to be fixed in anon de-mountable, i.e. plaster ceiling and/or it is to befitted with a damper.Code 0545. Multi cone, removable two position core,circular diffuser.Code 0130. Multi cone, removable fully adjustable core,circular diffuser.STANDARD SPECIFICATIONSIZESThe nominal neck diameters are shown below:-Code 0530. 160, 200, 250, 315, 355 and 400mm.Code 0545. 100, 160, 200, 250, 315, 355, 400, 450,500 and 630mm.Code 0130. 152, 203, 254, 305, 381, 457 and534mm.CONSTRUCTIONAluminium spinnings supported on steel brackets.The centre cone of the Code 0130 is spun in brass foradditional strength.FIXINGCodes 0545 and 0130 through the neck of the diffuserinto the duct. Code 0530 using a mounting bridgewhich is fixed in the neck of the duct and a boltthrough the centre of the diffuser into a captive nut onthe bridge.FINISHINGCode 0530 and 0545 diffusers are satin anodised AA5.Code 0130 diffusers are powder coated metallic silver(suffix S) or white to RAL 9010 satin (suffix W).PACKAGINGEach diffuser is individually boxed in a corrugatedcardboard box with crush proof ends.TECHNICAL INFORMATIONSee pages 60 - 63OPTIONAL ALTERNATIVES/ADDITIONSFINISHESAny BS, RAL or NCS colour. Code 0145. Please specify colourreference. We suggest powder coating on top of anodising forswimming pool applications. However, this is not possible on theCode 0130 diffuser because the brass centre cone cannot beanodised.OPTIONAL ALTERNATIVES/ADDITIONSFLAP DAMPERSFlap or butterfly dampers, Codes 0531, 0141 & 0649 are availablefor use with these diffusers. Care should be taken to make sure thatthe type of damper selected is compatible with the diffuser. Detailsare shown below.Table of Dampers suitable for Circular Ceiling DiffusersNominalNeck ØØ152 0141Ø160Ø200Ø203Ø250Ø254Ø305Ø315Ø355Ø381Ø400Ø450Ø457Ø500Ø534Ø630Code 0130 Code 0530 Code 0545014101410141014101410141MOUNTING BRIDGECode 0535. This is available for fixing a Code 0530 diffuser intothe circular duct so that the diffuser can then be secured by a boltthrough the centre of the diffuser into a captive nut in the bridge.It is essential because the diffuser has a fixed core and, where thereis no access to the ducting i.e. a plaster ceiling and/or a damper isfitted, it is the only means of fixing the diffuser or adjusting thedamper.ORDERING DETAILS0531 05310531 05310531 05310531 05310531 0531 or 06490531 0531 or 0649• The code for the basic diffuser should have 13 digits.See page 1.• The last four digits denote the nominal neck diameter.• Add codes for additions / alternatives as suffixes.EXAMPLE:A 200mm nominal diameter neck diffuser with removabletwo position core, satin anodised, with a flapdamper would be coded-0545/00000/0200+0531.Applications. Supply * Extract * Ceiling *064906490649CD59

DIFFUSERS-Circular CeilingCODE 0530 (FIXED CORE) SELECTION DATAØ NØ AØ NMounting BridgeH80Ø A52-552-5Ø BØ CØ BØ CCode 0530 + 0531Circular Diffuser with flap damper and mounting bridge forcircular steel ductsCode 0530Circular Diffuser with mounting bridge for circular steel ductsDiffuserSizeDimensions in mmøN øA øB øC H160mm 160200mm 200250mm 250315mm 315159199249314213264315366247287337402132152177209ØN = Duct DiameterØB = Diameter of opening in ceilingØA = Exterior neck diameter of diffuserØC = Total exterior diameter of diffuserH = Maximum height of the diffuser withthe volume control damper fully open355mm355354417442229400mm400399462487252Selection Data For Code 0530 Circular DiffusersDiffuserSizeEffectiveArea M 2Volume m 3 /s0.028 0.033 0.039 0.044 0.050 0.056 0.069 0.083 0.097 0.111 0.125 0.139 0.167 0.194 0.222 0.250 0.278 0.333 0.389 0.444Ø160Ø200Ø250Ø315Ø355Ø4000.00920.01380.02060.03120.03860.0477Effective Velocity m/sThrow m @ 0.25m/s VtTtoal Pressure PaNRVelocity m/sThrow m @ 0.25m/s VtTtoal Pressure PaNRVelocity m/sThrow m @ 0.25m/s VtTtoal Pressure PaNRVelocity m/sThrow m @ 0.25m/s VtTtoal Pressure PaNRVelocity m/sThrow m @ 0.25m/s VtTtoal Pressure PaNRVelocity m/sThrow m @ 0.25m/s VtTtoal Pressure PaNR3.00.93.6-3.61.15.144.21.37.092.0 2.40.8 0.91.6 2.3- -1.3 1.60.6 0.70.7 1.0-2.81.13.1-4.81.59.1143.21.24.045.41.711.5183.61.45.186.01.814.2224.01.56.3127.52.322.2295.01.99.9199.12.832.0366.02.314.22610.63.243.6417.02.619.4318.13.025.3369.13.432.040-1.90.91.4-2.21.01.8-2.41.12.3-2.71.22.823.41.54.4104.01.86.4164.72.18.7215.42.511.3266.12.814.4301.2 1.4 1.6 1.8 2.2 2.7 3.1 3.6 4.0- - - - - 6 11 16 200.7 0.8 0.9 1.0 1.2 1.5 1.7 2.0 2.20.6 0.8 1.0 1.2 1.9 2.8 3.8 4.9 6.31.2 1.3 1.4 1.8 2.2 2.5 2.9 3.2- - - - - 6 11 150.7 0.8 0.9 1.1 1.3 1.6 1.8 2.00.5 0.7 0.8 1.3 1.8 2.5 3.2 4.11.2 1.5 1.7 2.0 2.3 2.6- - - - 6 100.8 1.0 1.2 1.4 1.6 1.80.5 0.8 1.2 1.6 2.1 2.710.13.839.5446.73.117.7344.52.57.7243.62.25.0192.92.03.31312.14.556.9508.13.725.5405.33.011.1304.32.77.3253.52.44.8209.44.334.7466.23.515.1355.03.19.9304.12.86.52510.84.945.4507.14.019.8405.83.612.9354.73.28.53012.15.557.4548.04.525.0446.54.016.4395.23.610.7348.95.030.9487.24.520.2435.84.013.23710.76.044.5548.65.429.1497.04.819.04412.57.060.66010.16.339.6548.25.725.94911.57.251.7599.36.533.954NOTES:1. The diffuser is mounted aligned with ceiling2. To obtain the pressure drop loss and sound level with damper, see page 633. Data is based on Isothermal Conditions4. For free space applications reduce throws by 30%NR less than 10 NR less than 30CD60

DIFFUSERS-Circular CeilingCODE 0545 (TWO POSITION CORE) SELECTION DATAØBØNØAØBØNØA140HEEFØCG D6FØCG 6DCode 0532Circular Diffuser with 0649 Butterfly DamperSizes 355Ø to 630Ø onlyCode 0532Circular Diffuser with 0531 Flap DiffuserSizes 160Ø to 400Ø onlyDiffuserSize160200250160200250315 315355 355400 400450159199249314354399286385468566664754316415498606714814Dimensions in mmøN øA øB øC D450449850 92020202025303540E8092105119134145158F68106121220G18202228343442H160192230277312345140ØN = Duct Diameter in mmØA = Exterior neck diameter of diffuserØB = Diameter of ceiling openingØC = Overall exterior diameter of diffuserD = Width of the exterior ring of the diffuserE = Height of diffuserF = Distance from core in lower positionto the reference levelG = Distance from core in upper positionto the reference levelH = Maximum height of the diffuser withthe volume control damper fully open5005004999851055401802042140630 630 629 1108 1188 45 1962547140Selection Data For Code 0545 Circular DiffusersDiffuserSizeEffectiveArea M 2Volume m 3 /s0.028 0.044 0.056 0.083 0.111 0.139 0.167 0.194 0.222 0.250 0.278 0.333 0.389 0.444 0.500 0.556 0.694 0.833 0.972 1.111Ø160Ø200Ø250Ø315Ø355Ø400Ø450Ø500Ø630Effective Velocity m/sThrow m @ 0.25m/s VtTtoal Pressure PaNRVelocity m/sThrow m @ 0.25m/s VtTtoal Pressure PaNRVelocity m/sThrow m @ 0.25m/s VtTtoal Pressure PaNRVelocity m/sThrow m @ 0.25m/s VtTtoal Pressure PaNRVelocity m/sThrow m @ 0.25m/s VtTtoal Pressure PaNRVelocity m/sThrow m @ 0.25m/s VtTtoal Pressure PaNRVelocity m/sThrow m @ 0.25m/s VtTtoal Pressure PaNRVelocity m/sThrow m @ 0.25m/s VtTtoal Pressure PaNRVelocity m/sThrow m @ 0.25m/s VtTtoal Pressure PaNR1.90.52.2-3.10.85.793.91.08.9165.81.620.1301.20.40.9-2.00.72.3-1.30.51.0-2.50.83.7-1.50.71.6-3.71.38.2172.51.03.67.72.135.7394.91.714.6263.31.46.55 159.62.655.8468.22.122.9334.11.710.1221.10.60.7-1.60.81.6-2.21.12.8-2.71.44.4101.2 1.6 2.0- -0.7 1.0 1.20.5 1.6 2.51.20.80.97.42.532.8394.92.114.6283.31.76.4168.62.944.8445.82.419.9333.81.98.721-2.51.43.682.91.74.9139.93.458.5496.62.725.9374.32.211.3253.31.96.4177.43.132.8414.92.514.3293.72.28.1218.23.440.5445.42.817.7324.12.410.0249.94.158.4506.53.325.4384.92.914.5307.63.934.6435.73.419.7358.74.545.2486.53.925.7409.84.545.2487.44.332.54410.95.670.6558.24.840.24710.26.062.8541.5 1.9 2.2 2.5 2.8 3.1 3.7 4.3 4.9 5.6 6.2 7.7- - 5 9 13 16 22 27 32 36 39 461.1 1.3 1.5 1.7 1.9 2.1 2.5 2.9 3.4 3.8 4.2 5.31.4 2.1 2.8 3.7 4.7 5.7 8.3 11.3 14.7 18.6 23.0 35.91.31.01.1-1.61.21.6-1.31.11.0-1.91.42.1-1.51.21.4-2.21.62.8-1.71.41.8-2.41.83.591.91.62.3-2.72.04.4122.21.82.863.22.46.3182.62.14.0123.82.78.6233.02.55.5174.33.111.2283.52.87.2214.93.514.2323.93.29.1255.43.917.5354.33.511.2296.74.927.3425.44.417.5360.91.00.5-1.11.10.7-1.21.20.9-1.31.41.1-1.61.71.5-1.91.92.1-2.12.22.782.42.53.5112.72.84.3153.33.56.7229.36.351.752-NR less than 20 NR less than 408.15.939.4486.55.326.2424.04.19.6289.46.953.6537.66.134.3474.74.813.13310.87.970.0586.67.044.9515.35.517.137NOTES:1. The diffuser is mounted aligned with ceiling2. To obtain the pressure drop loss and sound level with damper, see page 633. Data is based on Isothermal Conditions4. For free space applications reduce throws by 30%CD61

DIFFUSERS-Circular CeilingCODE 0130 (VARIABLE POSITION CORE) SELECTION DATAØA Neck Size50mm51mmHDFEØB Shoulder SizeØG Opening SizeØC Overall SizeCode 0130 + 0141Circular Diffuser with Butterfly DamperSchedule of DimensionsøA øB øC D E F øG H152 305 340 51 5 110 320 186203 407 457 64 5 127 430 22825430538147550861076291456968085110418695121146566-145155172248530640800950272307362476534 1080 1148 178 - 280 1100 547ØA = Exterior neck diameter of diffuserØB = Shoulder size of diffuserØC = Overall exterior diameter of diffuserD = Height to bottom of duct connectionE = Flange return edge dimensionF = Overall height of diffuserØG = Diameter of ceiling openingH = Maximum height of the diffuser withthe volume control damper fully openSelection Data For Code 0130 Circular DiffusersNeck SizemmNeck Velocity m/sVelocity Pressure Pa4.1104.6135.1165.6196.1226.6267.1317.6352.020.046152mm Flow Rate m 3 /sStatic PaNR0.037711Rad of Dif m @ 0.5 m/s (V t ) 0.3Rad of Dif m @ 0.25 m/s (V t ) 0.9203mm Flow Rate m 3 /sStatic Pa0.0666NR11Rad of Dif m @ 0.5 m/s (V t ) 0.6Rad of Dif m @ 0.25 m/s (V t ) 1.2254mm Flow Rate m 3 /sStatic Pa0.1036NR12Rad of Dif m @ 0.5 m/s (V t ) 0.6Rad of Dif m @ 0.25 m/s (V t ) 1.5305mm Flow Rate m 3 /sStatic Pa0.1486NR12Rad of Dif m @ 0.5 m/s (V t ) 0.9Rad of Dif m @ 0.25 m/s (V t ) 1.5381mm Flow Rate m 3 /sStatic PaNR0.232614Rad of Dif m @ 0.5 m/s (V t ) 0.9Rad of Dif m @ 0.25 m/s (V t ) 2.1457mm Flow Rate m 3 /s0.334Static Pa5NR15Rad of Dif m @ 0.5 m/s (V t ) 1.2Rad of Dif m @ 0.25 m/s (V t ) 2.4533mm Flow Rate m 3 /sStatic PaNR0.454515Rad of Dif m @ 0.5 m/s (V t ) 1.2Rad of Dif m @ 0.25 m/s (V t ) 2.72.540.05611160.60.90.08210160.61.50.1299170.91.80.1859181.22.10.2909191.22.70.4179201.53.00.5689201.83.73.060.06516210.61.20.09914220.91.50.15413230.92.10.22213241.22.43.680.07421250.61.50.11520260.91.80.18018271.22.40.25918291.22.728280.61.50.13226290.92.10.20624311.22.70.29723321.53.40.08336320.92.10.0.1433332.12.4610mm Flow Rate m 3 /s0.584 0.731 0.877 1.023 1.169 1.315 1.461 1.607 1.753Static Pa5 9 12 17 22 28 35 42 50NR14 19 26 31 35 41 44 47 48Rad of Dif m @ 0.5 m/s (V t ) 1.6 2.1 2.5 2.9 3.3 3.7 4.1 4.6 5.0Rad of Dif m @ 0.25 m/s (V t ) 3.3 4.2 5.0 5.8 6.7 7.5 8.3 9.2 10.0NR ≤ 20 NR ≤ 30 NR ≤ 40 NR ≤ 400.34713261.53.00.50013271.83.70.68112272.14.30.40517311.83.70.58417332.14.30.79517332.45.20.46322352.14.30.66722362.44.90.90822372.75.80.23231351.53.00.33429371.83.70.52128392.44.60.75128402.75.51.02228413.46.40.09344340.92.10.16540361.22.70.25738381.53.50.37136392.14.00.57935422.45.20.83435433.06.11.13535443.77.30.10253371.22.10.18149391.53.00.28346401.83.70.40844422.14.60.63743442.75.80.91742463.77.01.24942474.07.90.11163391.22.40.19858411.53.40.30954431.84.00.44552452.44.90.69551473.06.41.00150483.77.61.36250494.38.80.12074411.22.70.21468431.83.70.33564452.14.90.42861472.75.50.753060493.46.71.08459514.08.21.47658514.99.41.89958525.410.80.13086431.53.00.23179451.84.00.36074482.44.90.51971492.75.80.81169523.77.31.16669534.38.81.58968545.210.42.04568555.811.60.13999451.53.00.24791472.14.00.38685492.45.20.55681513.06.10.86979534.007.91.25179554.69.41.70378565.511.02.19278586.212.5NOTES:Multiplying factors for static pressures: Cone up 1.0 Cone down 0.671. The diffuser is mounted aligned with the ceiling.2. To obtain the pressure loss and sound level with damper see page 633. Data is based on Isothermal conditions4. For free space applications reduce throws by 30%CD62

DIFFUSERS-Circular CeilingNOISE & PRESSURE DROP CORRECTION FOR DAMPERS ON CIRCULAR DIFFUSERS6. VOLUME CONTROL DAMPERSCode 0531, 0141 & 06496.b. Damper Code 0649(position in degrees)TECHNICAL DATAThe volume control dampers modify the values ofsound level and pressure loss given in the selectiontable.Hereafter, and in the corresponding graphs soundlevels and total pressure losses (∆P t ) are presented forthe difuser including the volume control damper as afunction of the parameters V t (effective velocity) andposition of the damper.10090807060504025° 50°70°NR 50NR 456.a. Damper Codes 0531 & 0141(position in degrees)3020NR 40NR 351009080706025° 50°NR 5070°∆P t(Pa)10NR 30NR 2550403020∆P t(Pa)107NR 20NR 25NR 30NR 35NR 401 2 3 4 5 6 7 8 9 10V k (m/s)NR 457NR 201 2 3 4 5 6 7 8 9 10V k (m/s)A correction factor should be applied to the soundlevel as a function of the nominal diameter of thediffuser according to the following table.Ø 100 160 200 250 315NR -5 -2 -1 ø158 0 138 +1Ø 355 400 450 500 630NR +2 +2 +3 ø158 +3 138 +4A correction factor should be applied to the soundlevel as a function of the nominal diameter of thediffuser according to the following table.DAngleØ 160 200 250 315 355 400NR -2 0 +3 ø158 +4 +5 138 +6DAngleCD63