Two-Pipe Bcxc with Tracer ZN520

Wiring Diagrams

•460 volt/3 phase

•2-position valve

•economizer damper

•2-stage electric heat

•fan status switch

•condensate overflow

•wall-mounted zone sensor

WARNING

Hazardous Voltage!

Disconnect all electric power, including remote disconnects before servicing. Follow proper lockout/tagout procedures to ensure the power can not be inadvertently energized. Failure to disconnect power before servicing could result in death or serious injury.

NOTICE

Use copper conductors only!

Unit terminals are not designed to accept other conductor types. Failure to use copper conductors could cause equipment damage.

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Trane BCVC, BCHC, BCXC-SVX01B-EN manual Two-Pipe Bcxc with Tracer ZN520

Contents

Blower Coil Air Handler April Refrigerant warning information Environmental ConcernsResponsible Refrigerant Practices Hazard of Explosion and Deadly Gases About This Manual Trademarks Table of Contents BCXC-SVX01B-EN Digit 16 Motor Horsepower Digits 1, 2, 3, 4 Unit ModelDigits 5, 6, 7 Unit Size Digit 8 Unit Voltage Model Number Description General Information Blower Coil General Information General Information Pre-Installation Receiving and HandlingJobsite Storage Recommendations Installation Preparation Service AccessPre-Installation Unit size Dimension a Unit Handling Procedure Rigging and HandlingImproper Unit Lift Unit Location Recommendations Pre-Installation Checklist Skid Removal Dimensions and Weights Horizontal blower coil dimensions in. and weights lbUnit Size RH LH Weight Horizontal Blower Coil Dimensions and Weights Vertical blower coil dimensions in. and weights lbUnit Size Weight Vertical Blower Coil Angle filter and mixing box dimensions in. and weights lb Angle Filter and Mixing BoxUnit size Bottom or Top Access Filter Box AIR Flow Filter Filter Access Panel Electric heat dimensions in. and weights lb Electric Heat Steam coil box dimensions in. and weights lb Steam CoilCoil Connections, NPT Supply Return Coil Connections Hydronic coil connection sizes, ODDX coil connection sizes, OD Steam coil connection sizes, female connection, NPT Piping Packages Basic Piping Dimensions and Weights Deluxe Piping Piping Nominal Actual size Installation Controls Installing Wall Mounted ControlsZone Sensor Installation Wiring Instructions Communication Wiring Installation ControlsService Communication Wiring Zone Sensors Without Interconnecting Wiring Tracer Summit Communication Wiring Installation Electrical Installation Electrical Zone sensor maximum wiring distances, ft mWire size range Max. wiring distance Electrical Grounding Restrictions Hazardous Voltage Useful Formulas Available electric heat, min-max kWUnit size Voltage Motor electrical data 220/50/1 240/50/1190/50/3 380/50/3 Installation Mechanical Installing the UnitBchc Installation Procedure Horizontal Units, Model Bchc Installation Mechanical Vertical Units, Model Bcvc Heating Coil Option Mixing Box Option Mixing Box Installation Procedure Linkage Installation ProcedureCondensate Drain Connections Recommended drain trap installation for draw-through units Duct Connections Installation Piping Water Coil ConnectionsPotential coil-freeze condition Refrigerant Coil Piping Installation Piping Valve DamageSuction Line Field-Installing Evaporator Piping Field-installed evaporation piping example Steam Piping Coil CondensateGeneral Steam Coils Type NS steam coils, horizontal tubes for horizontal airflow Controls Interface Control OptionsTracer Controllers Rover Service Software Controls InterfaceTracer controller input/output summary Tracer controller ZN010 ZN510 ZN520 Tracer controller function summary End Device Option AvailabilityTracer Control Device ZN010 Tracer ZN510 Tracer ZN520 Pre-Start Checklist Pre-StartReceiving Unit Location Pre-Start Component Overview DuctworkUnit Piping Electrical Start-Up Sequence of OperationTracer ZN Controller Sequence of Operation Occupied Mode Unoccupied ModeSensor type Sensor position Unit occupancy mode Start-Up Occupied Standby Mode Tracer ZN510 or ZN520 only Cooling OperationOccupied Bypass Mode, Tracer ZN510 or ZN520 Only Start-Up Economizer Cooling Tracer ZN520 Only DX Cooling Tracer ZN520 onlyDischarge Air Tempering Tracer ZN520 Only Heating Operation Fan Mode Operation Rotating Components Tracer ZN520 fan configurationAuto fan operation Fan speed default Fan sequence of operation Fan Speed Switch Tracer ZN010 and ZN510Tracer ZN520 Continuous Fan Operation Fan Off Delay Fan mode operation, Tracer ZN010 and ZN510Start-Up Fan Cycling Operation Fan Start on High Speed Entering Water Temperature Sampling Function Local fan switch enabledTwo- and Four-Pipe Changeover Operation Fan operation in heating and cooling modes Unit mode as related to water temperature Unit type EWT sensor required? Coil water temperatureElectric Heat Operation Economizer Damper Tracer ZN520 Only BIP1 Low Temperature Detection Option Tracer Dehumidification Tracer ZN520 OnlyData Sharing Tracer ZN510 or ZN520 Only Binary Inputs Binary input configurations BIP2 Condensate Overflow Detection OptionBIP3 Occupancy Sensor BIP4 Fan Status ZN520 Only Analog Inputs Binary OutputsAnalog inputs Analog input Terminal Function Range ZN010 ZN510 ZN520 Space Temperature Measurement Binary output configurationZone sensor wiring connections Zone Sensor Fan Mode Switch External Setpoint AdjustmentFan Switch Local Setpoint On/Cancel Buttons Communication Jack Maintenance Maintenance Procedures Maintenance Fan Assembly Set ScrewsFan Belt Tension Torque in.-lb Ft-lb Belt tension BCBH/BCVC valve package waterflow limits BCHC/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 Coil Maintenance Potential unit damage from coil cleanersInspecting and Cleaning Coils Steam, Hot Water, and Cooling Coil Cleaning Procedure Periodic Maintenance Checklists Rotating parts Maintenance Diagnostics TroubleshootingLED Activity Diagnostics Manual Output Test ProcedureManual Output Test Diagnostics Translating Multiple DiagnosticsTracer ZN520 test sequence Fan Cool output a Heat output Damper Steps J1-1, J1-3 Resetting Diagnostics Automatic Reset by the Controller Diagnostics Manual Output Test Cycling PowerRover Service Tool Diagnostic Reset Tracer ZN510 or ZN520 Only Tracer ZN010 and ZN510 controller diagnostics Tracer ZN520 diagnosticsDiagnostic Latching Fan Valves Electric heat Damper Diagnostic Fan Other outputsa Common Diagnostics Fan outputs do not energizeValves stay closed Probably cause Explanation Valves stay open Electric heat not operatingFresh air damper stays closed Fresh air damper stays open DX or electric outputs do not energize Wiring Diagrams Two-Pipe Bcxc with Tracer ZN510 Wiring Diagrams Four-Pipe Bcxc with Tracer ZN510 Four-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 Field Installed Device Bcxc with DX Coil and Tracer ZN520 Bcxc with DX Coil, Hydronic Heating, and Tracer ZN520 BCXC-SVX01B-EN