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Trane UNT-SVX07A-EN manual ZN520 with 2-stage electric heat, typical wiring, Maintenance diagram

Models: UniTrane Fan-Coil & Force Flo Air Conditioners UNT-SVX07A-EN

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typical wiring

Maintenance diagram

ZN520 with 2-stage electric heat

76	UNT-SVX07A-EN

Page 76

Image 76

Trane UNT-SVX07A-EN manual ZN520 with 2-stage electric heat, typical wiring, Maintenance diagram

Contents

Models FC & FF “ZO” and later design sequence Installation, Operation, and MaintenanceUniTrane Fan-Coil & Force Flo Air Conditioners 200 to 1,200 cfmgeneral information Warnings and CautionsAbout This Manual Literature Change History Common HVAC Acronymscontents Installation ……………………………………………………………2Maintenance…………………………………………………………60 Operation ……………………………………………………………49general information GeneralModel Number Installation information generalModel Number Description Digit 9 - piping system/placementInstallation information generalDigit 28 - auxiliary control valve 0 = none Digit 29 - piping packages 0 = noneInstallation information generalTable I-GI-1. Fan-coil component data Table I-GI-2. Low vertical fan-coil component dataAvailable Models Installation informationgeneral model A vertical concealed model D horizontal cabinetInstallation information Factory-Installed Piping Packagesgeneral dimensions Installationweights Vertical Concealed, Model AVertical Cabinet, Model B dimensionsInstallation weightsHorizontal Concealed, Model C dimensionsInstallation weightsHorizontal Cabinet, Model D dimensionsInstallation weightsHorizontal Recessed, Model E Installationdimensions weightsVertical Wall Hung Cabinet, Model F Installationdimensions weightsVertical Recessed, Model H Installationdimensions weightsVertical Slope Top, Model J Installationdimensions weightsLow Vertical Concealed, Model K Installationdimensions weightsLow Vertical Cabinet, Model L Installationdimensions weightsInverted Vertical Cabinet, Model M Installationdimensions weightsInverted Vertical Recessed, Model N Installationdimensions weightsFan-Coil Coil Connections Vertical Units Fan-Coil Coil Connections Horizontal UnitsInstallation dimensionsForce Flo Coil Connections Vertical Units Force FloCoil Connections Inverted UnitsFresh Air Opening Locations Horizontal Units Models C, D, and E Installationdimensions weightsFresh Air Opening Locations Vertical Units Models A, B, F, & J Installationdimensions weightsWall Box Installationdimensions weightsProjection Panel Installationdimensions weightspre-installation Installation considerations Installation PreparationReceiving and Handling Jobsite StoragePre-Installation Checklist Service Accesspre-installation Installation considerations Installation requirements mechanicalDuct Connections Piping ConsiderationsInstallation requirements Water Piping Connections to Factory- Installed Piping Packagemechanical Condensate Drainmechanical Installation requirementsVenting the Hydronic Coil mechanical Installation requirementsBalancing The Manual Circuit Setter Valve Installation requirements mechanicalSteam Piping Installation requirementsmechanical Coil DamageUnit Wiring Diagrams Supply Power WiringWall Mounted Control Interconnection Wiring electricalInstallation requirements electricalTable I-ER-2. Low vertical free discharge motors, 115 volt Table I-ER-3. Decimal to fractional HP kW conversionelectrical Installation requirementsHeater amps = heater kW x 1000/heater voltage Installation requirements electricalTable I-ER-10. Force Flo single-stage, max kW electric heat Table I-ER-11. Force Flo single stage, low kW electric heatelectrical Installation requirementsTable I-ER-12. Force Flo 2-stage electric heat installation Installation procedureInstalling the Unit Electrical Wiringinstallation Installation procedureNote The trim ring assembly cannot accomodate unlevel ceilings Unit LevelingWall-Mounted Control Options installationInstallation procedure Figure I-IP-4. Zone sensor with setpoint knob, on/cancel, & comm jackInstalling Wall Mounted Controls installationInstallation procedure Wiring InstructionsInstallation Checklist installationInstallation procedure Unit LevelingCommunication Wiring Recommended Communication Wiring Practicespre-startup Device AddressingPre-Startup Checklist Installation requirementspre-startup WARNING HazardousInstallation startup Tracer ZN510 & ZN520 Unit Startupgeneral Operation information General InformationManual Fan Mode Switch Relay BoardFan Mode Switch Operation sequence ofOperation operation Tracer ZN010 & ZN510 OperationBinary Inputs Binary OutputsPower-Up Sequence Entering Water Temperature Sampling FunctionFan Mode Switch sequence ofOperation operation Analog InputsTracer ZN520 Sequence of Operation sequence ofOperation operation OccupiedCooling Operation Heating Operationsequence of Operation operationFan Mode Operation Fan Off Delaysequence of Operation operationEntering Water Temperature Sampling Function sequence ofOperation operation Fan Start on High Speedsequence of Operation operationData Sharing Binary Outputssequence of Operation operationTable O-SO-14. Analog inputs Table O-SO-15. Analog inputsExternal Setpoint Adjustment Fan SwitchOn/Cancel Buttons sequence ofDiagnostics Maintenance diagnosticsTable M-D-1. Tracer ZN520 Diagnostics Maintenance diagnostics Translating Multiple DiagnosticsResetting Diagnostics Diagnostic ResetMaintenance diagnostics Table M-D-3. Fan outputs do not energizeTable M-D-4. Valves Stay Closed Table M-D-5. Valves Stay OpenMaintenance diagnostics Table M-D-6. Electric Heat Not OperatingTable M-D-7. Fresh Air Damper Stays Open Table M-D-8. Fresh Air Damper Stays ClosedMaintenance troubleshooting Troubleshooting the Relay BoardSwitch SW1 Controller Type Switch SW2 Electric HeatTroubleshooting Tracer ZN010, ZN510 & ZN520 Maintenance troubleshootingRed SERVICE LED Red SERVICE LEDMaintenance troubleshooting Verify output wiring and operation without using Rover, service toolTable M-T-1. Test sequence for 1-heat/1-cool configurations Force the water valve to open and balance the hydronic systemmaintenance Maintenance proceduresMaintenance Procedures Main Drain Panmaintenance Maintenance proceduresCoil Maintenance Steam and Hydronic Coil Cleaning Proceduremaintenance Maintenance proceduresControl Device Replacement Vertical UnitsPeriodic Maintenance Checklists maintenanceMaintenance procedures Monthly ChecklistMaintenance diagram typical wiringCSTI Fan Speed Switch typical wiring CSTI Non Fan Speed SwitchMaintenance diagram typical wiring Line voltage fan speed switchMaintenance diagram typical wiring Tracer ZN010 with electric heatMaintenance diagram typical wiring Tracer ZN510 with main and auxilliary valvesMaintenance diagram typical wiring ZN520 with 2-stage electric heatMaintenance diagram Page Page