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1、UnitFifteenCommissioningofVariableAirVolumeSystemsWhatisCommissioning(Cx)?Definition:“Aquality-focusedprocessforenhancingthedeliveryofaproject.Theprocessfocusesonverifyinganddocumentingthatthefacilityandallofitssystemsandassembliesareplanned,designed,i
2、nstalled,tested,operated,andmaintainedtomeettheOwner’sProjectRequirements.”ASHRAEGuideline0-2005,TheCommissioningProcessCommissioningisoftenperformedbyanindependentthird-partyengineeringcompany.Operatesasanowner’srepresentativetoinsuretheinstalledsyste
3、msmeettheownersrequirementsandtheplansandspecificationsUsuallyhiredbytheowner,sometimesbythearchitect,orgeneralcontractor.CommissioningPersonAllparticipantsintheconstructionprojecthaveacommissioningresponsibility.Participantsincludethecommissioningauth
4、ority,owner,designprofessionals,constructionmanager,generalcontractor,subcontractors,operationandmaintenancemanager,suppliers,andequipmentmanufacturers.BenefitsofCommissioningReducedchangeordersLesswarrantyandcallbacksforcontractorSmootherturnovertomai
5、ntenanceImprovedequipmentreliabilityReducedIEQproblemsReducedoccupantcomplaintsImprovedproductivityCorrectsystemoperationandinstallationFacilitymeetsOwner’sexpectationandoperationalneedsReducedutilityconsumptionandoperationalcostsCommissioningObjective
6、sEnsurethefacilitymeetstheowner’sperformancerequirementsProvideasafeandhealthyenvironmentProvideoptimumenergyperformanceProvideafacilitythatcanbeefficientlyoperatedandmaintainedProvidecompleteorientationandtrainingtofacilitystaffandoccupantsProvideimpr
7、oveddocumentationofsystemcharacteristicsCommissioning-Whatdidweusetodoandwhydoweneedit?CXofmechanicalandelectricalsystemswasdonebytheinstallingcontractorsNostandardization,orclearapproachMostoftherealCXoccurredduringthewarrantyperiodaswarrantycallsBuil
8、dingsoperatedlessefficientlyFirstyearofoccupancywasfrustratingfortheownerContractorsspentmoremoneyduringthewarrantyperiodsContractorscanberushedwithoutenoughtimetodouble-checktheirworkDesignEngineersdonothaveenoughbudgettooverseethecons
