Section 23 34 00HVAC FANS.docx
《Section 23 34 00HVAC FANS.docx》由会员分享,可在线阅读,更多相关《Section 23 34 00HVAC FANS.docx(9页珍藏版)》请在冰豆网上搜索。
Section233400HVACFANS
SECTION233400
HVACFANS
SPECWRITERNOTES:
1.Deletebetween////ifnotapplicabletoproject.Alsodeleteanyotheritemorparagraphnotapplicableinthesectionandrenumbertheparagraphs.
PART1GENERAL
1.1DESCRIPTION
A.Fansforheating,ventilatingandairconditioning.
B.ProductDefinitions:
AMCAPublication99,Standardl66.
1.2RELATEDWORK
A.Section010000,GENERALREQUIREMENTS.
B.Section013323,SHOPDRAWINGS,PRODUCTDATA,ANDSAMPLES.
C.Section130541,SEISMICRESTRAINTREQUIREMENTSFORNON-STRUCTURALCOMPONENTS.
D.Section230511,COMMONWORKRESULTSFORHVACANDSTEAMGENERATION.
E.Section230512,GENERALMOTORREQUIREMENTSFORHVACANDSTEAMGENERATIONEQUIPMENT.
F.Section230541,NOISEANDVIBRATIONCONTROLFORHVACPIPINGANDEQUIPMENT.
G.Section230593,TESTING,ADJUSTING,ANDBALANCINGFORHVAC.
H.Section230923,DIRECT-DIGITALCONTROLSYSTEMFORHVAC.
I.Section237300,INDOORCENTRAL-STATIONAIR-HANDLINGUNITS.
J.Section238216,AIRCOILS.
K.Section262911,LOW-VOLTAGEMOTORSTARTERS.
1.3QUALITYASSURANCE
A.Refertoparagraph,QUALITYASSURANCE,inSection230511,COMMONWORKRESULTSFORHVACANDSTEAMGENERATION.
B.FansandpowerventilatorsshallbelistedinthecurrenteditionofAMCA26l,andshallbeartheAMCAperformanceseal.
C.OperatingLimitsforCentrifugalFans:
AMCA99(ClassI,II,andIII).
D.Fansandpowerventilatorsshallcomplywiththefollowingstandards:
l.TestingandRating:
AMCA2l0.
2.SoundRating:
AMCA300.
E.VibrationToleranceforFansandPowerVentilators:
Section230541,NOISEANDVIBRATIONCONTROLFORHVACPIPINGANDEQUIPMENT.
F.PerformanceCriteria:
l.Thefanscheduleshallshowthedesignairvolumeandstaticpressure.SelectthefanmotorHPbyincreasingthefanBHPby10percenttoaccountforthedrivelossesandfieldconditions.
2.Selectthefanoperatingpointasfollows:
a.ForwardCurveandAxialFlowFans:
Righthandsideofpeakpressurepoint
b.AirFoil,BackwardInclined,orTubular:
Atornearthepeakstaticefficiency
G.SafetyCriteria:
Providemanufacturer'sstandardscreenonfaninletanddischargewhereexposedtooperatingandmaintenancepersonnel.
H.CorrosionProtection:
1.Exceptforfansinfumehoodexhaustservice,allsteelshallbemillgalvanized,orphosphatizedandcoatedwithminimumtwocoats,corrosionresistantenamelpaint.Manufacturerspaintandpaintsystemshallmeettheminimumspecificationsof:
ASTMD1735waterfog;ASTMB117saltspray;ASTMD3359adhesion;andASTMG152andG153forcarbonarclightapparatusforexposureofnon-metallicmaterial.
2.Fansforgeneralpurposefumehoods,orchemicalhoods,andradioisotopehoodsshallbeconstructedofmaterialscompatiblewiththechemicalsbeingtransportedintheairthroughthefan.
I.Sparkresistantconstruction:
Ifflammablegas,vapororcombustibledustispresentinconcentrationsabove20%oftheLowerExplosiveLimit(LEL),thefanconstructionshallbeasrecommendedbyAMCA'sClassificationforSparkResistantConstruction.Drivesetshallbecomprisedofnon-staticbeltsforuseinanexplosive.
1.4SUBMITTALS
A.SubmitinaccordancewithSection01 33 23,SHOPDRAWINGS,PRODUCTDATA,andSAMPLES.
B.ManufacturersLiteratureandData:
l.Fansections,motorsanddrives.
2.Centrifugalfans,motors,drives,accessoriesandcoatings.
a.Inlinecentrifugalfans.
b.TubularCentrifugalFans.
c.Upblastkitchenhoodexhaustfans.
d.Industrialfans.
e.Utilityfansandventsets.
3.Prefabricatedroofcurbs.
4.Powerroofandwallventilators.
5.Centrifugalceilingfans.
6.Propellerfans.
7.Packagedhoodmakeupairunits.
8.Vaneaxialfans.
9.Tube-axialfans.
10.Aircurtainunits.
C.CertifiedSoundpowerlevelsforeachfan.
D.Motorratingstypes,electricalcharacteristicsandaccessories.
E.Roofcurbs.
F.Beltguards.
G.MaintenanceandOperatingmanualsinaccordancewithSection010000,GENERALREQUIREMENTS.
H.Certifiedfanperformancecurvesforeachfanshowingcubicfeetperminute(CFM)versusstaticpressure,efficiency,andhorsepowerfordesignpointofoperation.
1.5APPLICABLEPUBLICATIONS
A.Thepublicationslistedbelowformapartofthisspecificationtotheextentreferenced.Thepublicationsarereferencedinthetextbythebasicdesignationonly.
B.AirMovementandControlAssociationInternational,Inc.(AMCA):
9986StandardsHandbook
2l006LaboratoryMethodsofTestingFansforAerodynamicPerformanceRating
26l-09DirectoryofProductsLicensedtobeartheAMCACertifiedRatingsSealPublishedAnnually
30008ReverberantRoomMethodforSoundTestingofFans
C.AmericanSocietyforTestingandMaterials(ASTM):
B11707aStandardPracticeforOperatingSaltSpray(Fog)Apparatus
D173508StandardPracticeforTestingWaterResistanceofCoatingsUsingWaterFogApparatus
D335908StandardTestMethodsforMeasuringAdhesionbyTapeTest
G152-06StandardPracticeforOperatingOpenFlameCarbonArcLightApparatusforExposureofNon-MetallicMaterials
G153-04StandardPracticeforOperatingEnclosedCarbonArcLightApparatusforExposureofNon-MetallicMaterials
D.NationalFireProtectionAssociation(NFPA):
NFPA9608StandardforVentilationControlandFireProtectionofCommercialCookingOperations
E.NationalSanitationFoundation(NSF):
3707AirCurtainsforEntranceWaysinFoodandFoodServiceEstablishments
F.UnderwritersLaboratories,Inc.(UL):
181-2005FactoryMadeAirDuctsandAirConnectors
1.6extramaterials
A.Provideoneadditionalsetofbeltsforallbelt-drivenfans.
PART2PRODUCTS
2.1FANSECTION(CabinetFan)
RefertospecificationSection237300,INDOORCENTRAL-STATIONAIR-HANDLINGUNITS.
2.2CENTRIFUGALFANS
A.StandardsandPerformanceCriteria:
RefertoParagraph,QUALITYASSURANCE.RecordfactoryvibrationtestresultsonthefanorfurnishtotheContractor.
SPECWRITERNOTE:
CoordinateFanarrangementwiththeequipmentscheduleondrawings.
B.Fanarrangement,unlessnotedorapprovedotherwise:
l.DWDlfans:
Arrangement3.
2.SWSlfans:
Arrangementl,3,9orl0,//exceptforfumehood(H7orHl3)exhaustfansArrangement3shallnotbeacceptable.//
C.Construction:
WheeldiametersandoutletareasshallbeinaccordancewithAMCAstandards.
l.Housing:
Lowcarbonsteel,arcweldedthroughout,bracedandsupportedbystructuralchannelorangleirontopreventvibrationorpulsation,flangedoutlet,inletfullystreamlined.Provideliftingclips,andcasingdrain.Providemanufacturer'sstandardaccessdoor.Provide12.5mm(1/2inches)wiremeshscreensforfaninletswithoutductconnections.
2.Wheel:
Steelplatewithdieformedbladesweldedorrivetedinplace,factorybalancedstaticallyanddynamically.
3.Shaft:
Designedtooperateatnomorethan70percentofthefirstcriticalspeedatthetopofthespeedrangeofthefansclass.
4.Bearings:
HeavydutyballorrollertypesizedtoproduceaBl0lifeofnotlessthan50,000hours,andanaveragefatiguelifeof200,000hours.Extendfilledlubricationtubesforinteriorbearingsorductedunitstooutsideofhousing.
5.Belts:
Oilresistant,non-sparkingandnon-static.
6.BeltDrives:
Factoryinstalledwithfinalalignmentbeltadjustmentmadeafterinstallation.
7.MotorsandFanWheelPulleys:
Adjustablepitchforusewithmotorsthrough15HP,fixedpitchforusewithmotorslargerthan15HP.Selectpulleyssothatpitchadjustmentisatthemiddleoftheadjustmentrangeatfandesignconditions.
8.Motor,adjustablemotorbase,driveandguard:
Furnishfromfactorywithfan.RefertoSection230511,COMMONWORKRESULTSFORHVACANDSTEAMGENERATIONforspecifications.Provideprotectivesheetmetalenclosureforfanslocatedoutdoors.
9.Furnishvariablespeedfanmotorcontrollerswhereshownonthedrawings.RefertoSection,MOTORSTARTERS.RefertoSection230511,COMMONWORKRESULTSFORHVACANDSTEAMGENERATIONforcontroller/motorcombinationrequirements.
D.InlineCentrifugalFans:
InadditiontotherequirementsofparagraphsAand2.2.C3thru2.2.C9,provideminimum18Gaugegalvanizedsteelhousingwithinletandoutletflanges,backwardinclinedaluminumcentrifugalfanwheel,boltedaccessdoorandsupportsasrequired.Motorsshallbefactorypre-wiredtoanexternaljunctionbox.//Providefactorywireddisconnectswitch.//
E.TubularCentrifugalFans:
InadditiontotherequirementsofparagraphsAand2.2.C2thru2.2.C9provide;
1.Housings:
Hotrolledsteel,onepiecedesign,incorporatingintegralguidevanes,motormounts,boltedaccesshatchandendflanges.Providespuninletbellandscreenforunductedinletandscreenforunductedoutlet.Provideweldedsteel,flangedinletandoutletconesforductedconnection.Providemountinglegsorsuspensionbracketsasrequiredforsupport.Guidevanesshallstraightenthedischargeairpatterntoprovidelinearflow.
F.IndustrialFans:
Usewherescheduledorinlieuofcentrifugalfansforlowvolumehighstaticservice.ConstructionspecificationsparagraphsAandCforcentrifugalfansshallapply.Providematerialhandlingflatbladetypefanwheel.
G.UtilityFans,VentSetsandSmallCapacityFans:
Classldesign,arcweldedhousing,spunintakecone.Applicableconstructionspecification,paragraphsAandC,forcentrifugalfansshallapplyforwheeldiameters300mm(l2inches)andlarger.RequirementforAMCAsealiswaivedforwheeldiameterslessthan300mm(l2inches)andhousingsmaybecastiron.
SPECWRITERNOTE:
1.DesignatethefansthatarerequiredtobeexplosionproofintheFanSchedule.
2.SelectAMCAA,BorCsparkresistantconstructionasrequiredforapplication.
H.SparkResistant/Explosion