Swirl Diffusers-we.. - Air Diffusion

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