Trane Comprehensive Guide to BCVC Installation Controls and Tracer Summit Communication

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Installation Controls

Peer-to-peer communication across controllers is possible even when a building automation system is not present.You do not need to observe polarity for Comm5 communication links.

The controller provides six 0.25-inch quick-connect terminals for the Comm5 communication link connections, as follows:

•Two terminals for communication to the board

•Two terminals for communication from the board to the next unit (daisy chain)

•Two terminals for a connection from the zone sensor back to the controller

Each controller has its own unique address or I.D. number on a Neuron chip. Setting dip switches are not required on the Tracer™ controller.

Tracer Summit Communication Wiring

For Tracer™ ZN-controlled units that will interface with the Trane Tracer Summit® building management system, terminate the communication wiring in the control box at the designated terminals on the board. Reference the unit wiring diagram or submittals.

Ground shields at each Tracer™ ZN controller, taping the opposite end of each shield to prevent any connection between the shield and anther ground. Refer to Trane publication CNT-SVX04A-EN, Tracer ZN.520 Unit Controller - Installation, Operation and Programming Guide, for the communication wiring diagram.

Communication wire must conform to the following specification:

•Shielded twisted pair 18 AWG

•Capacitance 23 (21-25) picofarads (pF) per foot

•Listing/Rating – 300V 150C NEC 725-2 (b) Class 2 Type CL2P

•Trane Part No. 400-20-28 or equivalent, available through Trane BAS Buying Group Accessories catalog.

BCXC-SVX01B-EN

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Contents April Blower Coil Air HandlerRefrigerant warning information Environmental ConcernsResponsible Refrigerant Practices Hazard of Explosion and Deadly Gases Trademarks About This ManualTable of Contents BCXC-SVX01B-EN Digit 8 Unit Voltage Digit 16 Motor HorsepowerDigits 1, 2, 3, 4 Unit Model Digits 5, 6, 7 Unit SizeModel Number Description Blower Coil General Information General InformationGeneral Information Pre-Installation Receiving and HandlingJobsite Storage Recommendations Unit size Dimension a Installation PreparationService Access Pre-InstallationUnit Location Recommendations Unit Handling ProcedureRigging and Handling Improper Unit LiftSkid Removal Pre-Installation ChecklistHorizontal Blower Coil Dimensions and WeightsHorizontal blower coil dimensions in. and weights lb Unit Size RH LH WeightVertical Blower Coil Dimensions and WeightsVertical blower coil dimensions in. and weights lb Unit Size WeightAngle filter and mixing box dimensions in. and weights lb Angle Filter and Mixing BoxUnit size AIR Flow Filter Filter Access Panel Bottom or Top Access Filter BoxElectric Heat Electric heat dimensions in. and weights lbSupply Return Steam coil box dimensions in. and weights lbSteam Coil Coil Connections, NPTSteam coil connection sizes, female connection, NPT Coil ConnectionsHydronic coil connection sizes, OD DX coil connection sizes, ODBasic Piping Piping PackagesDimensions and Weights Deluxe Piping Actual size Piping NominalWiring Instructions Installation ControlsInstalling Wall Mounted Controls Zone Sensor InstallationZone Sensors Without Interconnecting Wiring Communication WiringInstallation Controls Service Communication WiringTracer Summit Communication Wiring Installation Electrical Electrical Grounding Restrictions Hazardous Voltage Installation ElectricalZone sensor maximum wiring distances, ft m Wire size range Max. wiring distanceUseful Formulas Available electric heat, min-max kWUnit size Voltage Motor electrical data 380/50/3 220/50/1240/50/1 190/50/3Horizontal Units, Model Bchc Installation MechanicalInstalling the Unit Bchc Installation ProcedureVertical Units, Model Bcvc Installation MechanicalMixing Box Option Heating Coil OptionMixing Box Installation Procedure Linkage Installation ProcedureCondensate Drain Connections Duct Connections Recommended drain trap installation for draw-through unitsRefrigerant Coil Piping Installation PipingWater Coil Connections Potential coil-freeze conditionInstallation Piping Valve DamageSuction Line Field-installed evaporation piping example Field-Installing Evaporator PipingSteam Coils Steam PipingCoil Condensate GeneralType NS steam coils, horizontal tubes for horizontal airflow Controls Interface Control OptionsTracer Controllers Tracer controller ZN010 ZN510 ZN520 Rover Service SoftwareControls Interface Tracer controller input/output summaryTracer controller function summary End Device Option AvailabilityTracer Control Device ZN010 Tracer ZN510 Tracer ZN520 Unit Location Pre-Start ChecklistPre-Start ReceivingElectrical Pre-Start Component OverviewDuctwork Unit PipingStart-Up Sequence of OperationTracer ZN Controller Sequence of Operation Start-Up Occupied ModeUnoccupied Mode Sensor type Sensor position Unit occupancy modeOccupied Standby Mode Tracer ZN510 or ZN520 only Cooling OperationOccupied Bypass Mode, Tracer ZN510 or ZN520 Only Heating Operation Start-Up Economizer Cooling Tracer ZN520 OnlyDX Cooling Tracer ZN520 only Discharge Air Tempering Tracer ZN520 OnlyFan sequence of operation Fan Mode Operation Rotating ComponentsTracer ZN520 fan configuration Auto fan operation Fan speed defaultContinuous Fan Operation Fan Speed SwitchTracer ZN010 and ZN510 Tracer ZN520Fan Start on High Speed Fan Off DelayFan mode operation, Tracer ZN010 and ZN510 Start-Up Fan Cycling OperationFan operation in heating and cooling modes Entering Water Temperature Sampling FunctionLocal fan switch enabled Two- and Four-Pipe Changeover OperationEconomizer Damper Tracer ZN520 Only Unit mode as related to water temperatureUnit type EWT sensor required? Coil water temperature Electric Heat OperationBinary Inputs BIP1 Low Temperature Detection OptionTracer Dehumidification Tracer ZN520 Only Data Sharing Tracer ZN510 or ZN520 OnlyBIP4 Fan Status ZN520 Only Binary input configurationsBIP2 Condensate Overflow Detection Option BIP3 Occupancy SensorAnalog input Terminal Function Range ZN010 ZN510 ZN520 Analog InputsBinary Outputs Analog inputsZone Sensor Space Temperature MeasurementBinary output configuration Zone sensor wiring connectionsLocal Setpoint Fan Mode SwitchExternal Setpoint Adjustment Fan SwitchCommunication Jack On/Cancel ButtonsMaintenance Procedures MaintenanceTorque in.-lb Ft-lb MaintenanceFan Assembly Set Screws Fan Belt TensionBCBH/BCVC valve package waterflow limits Belt tensionBCHC/BCVC coil general data Hydronic coil dataRow coil Steam coil data Drive data Unit Motor Motor sheave Fan sheave Belt1750 1450 Size Watts Browning Trane 60 Hz 50 Hz Steam, Hot Water, and Cooling Coil Cleaning Procedure Coil MaintenancePotential unit damage from coil cleaners Inspecting and Cleaning CoilsRotating parts Periodic Maintenance ChecklistsMaintenance Diagnostics TroubleshootingLED Activity Diagnostics Manual Output Test ProcedureManual Output Test Fan Cool output a Heat output Damper Steps J1-1, J1-3 DiagnosticsTranslating Multiple Diagnostics Tracer ZN520 test sequenceAutomatic Reset by the Controller Resetting DiagnosticsDiagnostic Reset Tracer ZN510 or ZN520 Only Diagnostics Manual Output TestCycling Power Rover Service ToolDiagnostic Fan Other outputsa Tracer ZN010 and ZN510 controller diagnosticsTracer ZN520 diagnostics Diagnostic Latching Fan Valves Electric heat DamperProbably cause Explanation Common DiagnosticsFan outputs do not energize Valves stay closedValves stay open Electric heat not operatingFresh air damper stays closed DX or electric outputs do not energize Fresh air damper stays openTwo-Pipe Bcxc with Tracer ZN510 Wiring DiagramsFour-Pipe Bcxc with Tracer ZN510 Wiring DiagramsFour-Pipe Bcxc with Tracer ZN510 Two-Pipe Bcxc with Tracer ZN520 Four-Pipe Bcxc with Tracer ZN520 Four-Pipe Bcxc with Tracer ZN520 Four-Pipe Bcxc with Tracer ZN520 Four-Pipe Bcxc with Control Interface Four-Pipe Bcxc with Control Interface Bcxc with DX Coil and Tracer ZN520 Field Installed DeviceBcxc with DX Coil, Hydronic Heating, and Tracer ZN520 BCXC-SVX01B-EN