Series GSF Fixed Ceiling Swirl Diffusers - Keane Environmental

More documents

Recommendations

Info

SERIES GSFIntroductionWith the GSF Series Gilberts introduce a contemporaryand attractively designed range of Fixed Swirl TypeDiffusers for ceiling supply and extract applications.Thecircular pattern of radial vanes featured on this unit providethe swirl, air distribution effect typically associated with thistype of diffuser allowing the unit to introduce high volumesof air into the conditioned space, taking advantage of rapidentrainment and intermixing. On a Fixed Swirl Unit thedistribution pattern is horizontal across the ceiling. As a resultthe unit can deliver high air change rates as compared toconventional diffusers. Not withstanding the performancepotential, aesthetic aspects have also been considered.The circular profile of the GSFA type unit lends itself well toexposed ductwork and other contemporary applications butis arguably less appropriate in square ceiling grids. TheGSFB and GSFC type however, which offer a perforatedface diffuser type appearance lend themselves particularlywell in these instances always enabling a good balancebetween performance and aesthetics to be maintained forall applications. Newer models, such as the GSFD,adapted for the clipin ceiling type applications, and theGSFE with a circular perforated face offer furtheradvancements in swirl options. For the ultimate indiscretion the latest GSFH model is designed to fit fullyconcealed behind the standard perforated ceiling tiles of allthe popular manufacturers.THe FIXed SwIrl range comprises of 7 type options:TYPE GSFA: Standard Swirl Diffuser comprising of fixed blades mounted in a Circular Housing Frame.TYPE GSFB: Circular Swirl Diffuser with fixed blades fitted into a square Perforated Face Housing Frame. The perforatedface is hinged for easy access from the diffuser face. For a fixed face unit select type GSFK.TYPE GSFC: Circular Swirl Diffuser with fixed blades fitted into a square borderless Perforated Face Housing Frame.TYPE GSFD: Circular Swirl Diffuser with fixed blades fitted into a square Perforated Fascia adapted for Clipin Ceilingapplications.TYPE GSFE: Circular Swirl Diffuser with fixed blades fitted into a Circular Perforated Fascia with removable core.TYPE GSFH: Circular Swirl Diffuser with fixed blades adapted for fitting behind standard perforated face ceiling tilesfrom the popular manufacturers.For extract applications complementary exhaust swirl units (Type GSXB to K) are available to match supplydiffuser type options.FeaturesOmni Directional, Swirl DischargeHorizontal projection•High induction effectPerforated Square, Perforated•Circular or Open Face Circular designStandard or Clipin ceiling border•optionsSuitable for High Room Air Change RatesPerformanceDataSelectionProcedure2Fixed Swirl DiffusersAll units are fabricated from a combination of aluminiumand steel components and are available with a matchingrange of top and side entry plenum boxes. Volume controlcan be achieved using Quadrant flap type or iris damperson the plenum inlet spigots. Swirl diffuser sizes range from160 to 630mm dia as indicated in the dimensional data.The performance tables illustrated in this brochure givetabulated performance data for each listed size of diffuser,together with their design. The figures given relate toCooling, Ventilation and Heating applications and alwaysfor horizontal distribution of conditioned air.The performance data for all Gilberts products is derivedusing a Gilberts plenum design and specification.Performance cannot be guaranteed where alternativeplenum designs are used.1. Try if possible to construct in plan an imaginary squareceiling grid. This will enable the designerto position each diffuser at each square centre so thatdistribution is even in all the directions.2. The total volume of air is then divided by the number ofoutlets and a volume per diffuser is established.3. The performance charts should then be used to selectthe size and type of diffuser based upon volume andthrow requirements. For high ceiling applications anoverblow situation can be acceptable.Standard finish is white for type GSFA and white perforatedfascia, with unexposed internals finished matt black on allother GSF types.Stoved finishes to any BS or RAL colour are available onrequest.References UsedPressure: All pressures are in Pa (N/m2)Throw: The horizontal distances for airstreams are given for both 0.5 and0.25 m/s terminalvelocities and are based upon aceiling effect.Sound: The NC values are peak levels onthe NC curves.4. Check pressure loss and NC levels from design chart toconfirm acceptability.Gilberts Supply Diffusers have been tested within the rangeof +/ 10ºC (as recommended in the HEVAC Guide to AirDistribution Technology). For any other temperaturedifferential requirements please contact our TechnicalDepartment.
SERIES GSFType GSFADIFFUSER'A' DIAOVERALL SIZE'B' DIA25 x 25 ANGLEFIXING CLEATS'C' DIMAPERTURE SIZE = 'A' DIM - 50MM'A' DIAGSFASIZE A B C160 240 158 90250 330 248 100315 425 313 110450 560 448 155630 740 628 220DIFFUSER C/W TOP ENTRY BOX'B' DIADIFFUSER C/W SIDE ENTRY BOXLENGTH TO SUITDAMPER DIA(WHERE FITTED)LENGTH TO SUITDAMPER DIA(WHERE FITTED)50FIXINGCLEATS50200'C' DIM'C' DIM'B' DIAAPERTURE SIZE = 'A' DIM - 50MM'A' DIAAPERTURE SIZE = 'A' DIM - 50MM'A' DIAGSFATCBSIZE A B C160 240 125 437250 330 200 522315 425 250 582450 560 350 727630 740 400 842GSFASEBSIZE A B C D160 240 125 187 437250 330 200 262 522315 425 250 312 582450 560 350 412 727630 740 400 462 842Fixed Swirl Diffusers3
Page 1: SERIES GSFFixed SwirlDiffusersPUBLI
Page 5 and 6: SERIES GSF'A' DIMOVERALL SIZE'B' DI
Page 7 and 8: SERIES GSFType GSFH'B' DIA25 x 25FI
Page 9 and 10: SERIES GSFTechnicalPerformanceDataS
Page 11 and 12: SERIES GSFTechnicalPerformanceDataS

Series GSF Fixed Ceiling Swirl Diffusers - Keane Environmental

Create successful ePaper yourself

Delete template?

Save as template?