4100N.FAIRFAXDR.,SUITE200•ARLINGTON,VIRGINIA222032003STANDARDforPERFORMANCERATINGOFWATER-CHILLINGPACKAGESUSINGTHEVAPORCOMPRESSIONCYCLEStandard550/590Price$10.00(M)$20.00(NM)Copyright2003,byAir-ConditioningandRefrigerationInstitutePrintedinU.S.A.RegisteredUnitedStatesPatentandTrademarkOfficeIMPORTANTSAFETYDISCLAIMERARIdoesnotsetsafetystandardsanddoesnotcertifyorguaranteethesafetyofanyproducts,componentsorsystemsdesigned,tested,rated,installedoroperatedinaccordancewiththisstandard/guideline.Itisstronglyrecommendedthatproductsbedesigned,constructed,assembled,installedandoperatedinaccordancewithnationallyrecognizedsafetystandardsandcoderequirementsappropriateforproductscoveredbythisstandard/guideline.ARIusesitsbesteffortstodevelopstandards/guidelinesemployingstate-of-the-artandacceptedindustrypractices.ARIdoesnotcertifyorguaranteethatanytestsconductedunderitsstandards/guidelineswillbenon-hazardousorfreefromrisk.ARICERTIFICATIONPROGRAMPROVISIONSScopeoftheCertificationProgram60HzPowerIncludedinCertificationProgramWater-CooledAir-CooledAllcompressortypesAllcompressortypesRatedupto2000tons[7034kW]atARIStandardRatingConditionsRatedupto200tons[703kW]atARIStandardRatingConditionsHermetic&opentype,electricmotordrivenHermetic&opentype,electricmotordrivenVoltagesupto5000voltsVoltagesupto600voltsExcludedfromCertificationProgramWater-CooledAir-CooledCondenserlesschillersCondenserlesschillersEvaporativelycooledchillersEvaporativelycooledchillersChillersabove2000tons[7034kW]Chillersabove200tons[703kW]Chillerswithvoltagesabove5000voltsChillerswithvoltagesabove600voltsChillerspoweredbyotherthanelectricmotordrivesChillerspoweredbyotherthanelectricmotordrivesChillerswithmotorsnotsuppliedwiththeunitbySecondarycoolantratings(otherthanwater)ThemanufacturerFreecoolingSecondarycoolantratings(otherthanwater)Heatrecovery&heatpumpratingsFreecoolingHeatrecovery&heatpumpratingsARICERTIFICATIONPROGRAMPROVISIONS(CONTINUED)ScopeoftheCertificationProgram(Continued)50HzPowerIncludedinCertificationProgramWater-CooledAir-CooledCentrifugal&screwchillerswithcontinuousunloadingRated200-1000tons[703-3517kW]atARIStandardRatingConditionsHermetic&opentype,electricmotordrivenNotapplicableVoltagesupto5000voltsExcludedfromCertificationProgramWater-CooledAir-CooledScroll&reciprocatingcompressorchillerswithstepunloadingCondenserlesschillersEvaporativelycooledchillersNotapplicableChillersbelow200tons[703kW]Chillersabove1000tons[3517kW]Chillerswithvoltagesabove5000voltsChillerspoweredbyotherthanelectricmotordrivesChillerswithmotorsnotsuppliedwiththeunitbyThemanufacturerSecondarycoolantratings(otherthanwater)FreecoolingHeatrecovery&heatpumpratingsCertifiedRatingsTheCertificationProgramratingsverifiedbytestare:1.Capacity,tons[kW]2.EnergyEfficiency,asapplicable:•PowerInputperCapacity,kW/ton[kW/kW]•EnergyEfficiencyRatio(EER),Btu/(W⋅h)•CoefficientofPerformance(COP),watts/watt[W/W]3.Waterpressuredrop,psiorftH2O[kPa]4.IntegratedPart-LoadValue(IPLV)(Section5.4.1)5.Non-StandardPart-LoadValue(NPLV)(Section5.4.1)Items1-5areatStandardRatingConditions(Section5.2)andatnon-standardRatingConditions(Section5.3)forbothfullandpartload(Section5.4forpart-loadperformancerequirements).Note:ThisstandardsupersedesARIStandard550/590-98withaddenda.TABLEOFCONTENTSSECTIONPAGESection1.Purpose..............................................................................................................................1Section2.Scope.................................................................................................................................1Section3.Definitions.........................................................................................................................1Section4.TestRequirements.............................................................................................................2Section5.RatingRequirements.........................................................................................................3Section6.MinimumDataRequirementsforPublishedRatings......................................................12Section7.MarkingandNameplateData..........................................................................................13Section8.ConformanceConditions...............................................................................................13TABLESTable1.StandardRatingConditions...............................................................................................4Table2.HeatReclaimStandardRatingConditions........................................................................5Table3.Part-LoadConditionsforRating.......................................................................................6FIGURESFigure1.Part-LoadEfficiencyCurve...............................................................................................7Figure2.Air-CooledCondenserEnteringAirTemperaturevs.%Load.........................................9Figure3.AllowableToleranceCurvesforFullandPartLoad...................................