Trane UNT-SVX07A-EN manual Maintenance diagnostics, Table M-D-1. Tracer ZN520 Diagnostics

Page 60

Maintenance diagnostics

Diagnostics

Table M-D-1. Tracer ZN520 Diagnostics

Diagnostic

Fan

Other Outputs (Note 1)

Condensate overflow

Off

Valves Closed, Fresh air damper Closed, electric heat Off,

 

 

Baseboard heat Off

Low temperature detection

Off

Valves Open, Fresh air damper Closed, electric heat Off,

 

 

Baseboard heat Off

Low air flow - fan failure

Off

Valves Closed, Fresh air damper Closed, electric heat Off,

 

 

Baseboard heat Off

Space temperature failure

Off

Valves Closed, Fresh air damper Closed, electric heat Off,

 

 

Baseboard heat Off

Entering water temp failure

On

Valves Enabled (Note 2), Fresh air damper Enabled (Note 2),

 

 

electric heat Enabled (Note 2), Baseboard heat Off

Discharge air temp low limit

Off

Valves Open, Fresh air damper Closed, electric heat Off,

 

 

Baseboard heat Off

Discharge air temp failure

Off

Valves Closed, Fresh air damper Closed, electric heat Off,

 

 

Baseboard heat Off,

Fresh air temp failure

On

Valves Enabled, Fresh air damper Minimum position3, electric

 

 

heat Enabled, Baseboard heat Enabled

Relative humidity failure

On

Valves Enabled, Fresh air damper Enabled, electric heat

 

 

Enabled, Baseboard heat Enabled

Generic 4-20ma failure

On

Valves Enabled, Fresh air damper Enabled, electric heat

 

 

Enabled, Baseboard heat Enabled

CO2 Input failure

On

Valves Enabled, Fresh air damper Enabled, electric heat

 

 

Enabled, Baseboard heat Enabled

Maintenance required

On

Valves Enabled, Fresh air damper Enabled, electric heat

 

 

Enabled, Baseboard heat Enabled

Local fan mode failure

On

Valves Enabled, Fresh air damper Enabled, Electric Heat

 

 

Enabled, Baseboard heat Enabled

Local setpoint failure

On

Valves Enabled, Fresh air damper Enabled, electric heat

 

 

Enabled, Baseboard heat Enabled

Invalid unit configuration

Off

Valves Disabled, Fresh air damper Disabled, electric heat

 

 

Disabled, Baseboard heat Disabled

Normal – power up

On

Valves Enabled, Fresh air damper Enabled, Electric heat Enabled

Note 1: The generic binary output (TB4-1, TB4-2) state is unaffected by all unit diagnostics.

Note 2: When the entering water temperature is required but not present, the Tracer ZN520 controller generates a diagnostic to indicate the sensor loss condition. The controller automatically clears the diagnostic once a valid entering water temperature value is present (non-latching diagnostic). When the entering water temperature sensor fails, the controller prohibits all hydronic cooling operation, but allows the delivery of heat when heating is required. In the Cool mode, all cooling is locked-out, but normal fan and outdoor air damper operation is permitted.

Note 3: When the outdoor air temperature sensor has failed or is not present, the Tracer ZN520 controller generates a diagnostic to indicate the sensor loss condition. The controller automatically clears the diagnostic once a valid outdoor air temperature value is present (non-latching diagnostic). When the outdoor air temperature sensor fails or is not present, the controller prohibits economizer operation.

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Contents Installation, Operation, and Maintenance Models FC & FF ZO and later design sequenceGeneral information Common Hvac AcronymsContents General Model NumberGeneral Model Number DescriptionDigit 28 auxiliary control valve 0 = none Digit 29 piping packages 0 = noneDigit 30 control type 0 = none Digit 31 control optionTable I-GI-1. Fan-coil component data Table I-GI-2. Low vertical fan-coil component dataAvailable Models Model E horizontal recessedModel K low vertical cabinet Model M inverted vertical cabinetFactory-Installed Piping Packages Dimensions Installation WeightsVertical Concealed Unit Dimensions & weights, in-lbs Vertical Concealed, Model aVertical Cabinet Unit Dimensions, in-lbs Vertical Cabinet, Model BHorizontal Concealed Unit Dimensions, in-lbs Horizontal Concealed, Model CHorizontal Cabinet Unit Dimensions, in-lbs Horizontal Cabinet, Model DInstallation Dimensions Weights Horizontal Recessed Unit Dimensions, in-lbsHorizontal Recessed, Model E Vertical wall hung cabinet unit dimensions & weights, in-lbs Vertical Wall Hung Cabinet, Model FVertical Recessed Unit Dimensions, in-lbs Vertical Recessed, Model HVertical Slope Top Unit Dimensions, in-lbs Vertical Slope Top, Model JLow Vertical Concealed Unit Dimensions, in-lbs Low Vertical Concealed, Model KLow Vertical Cabinet Unit Dimensions, in-lbs Low Vertical Cabinet, Model LInverted vertical cabinet unit dimensions & weights, in-lbs Inverted Vertical Cabinet, Model MInverted vertical recessed unit dimensions & weights, in-lbs Inverted Vertical Recessed, Model NFan-Coil Coil Connections Vertical Units Horizontal Units Force Flo Coil Connections Vertical Units Horizontal Units Inverted UnitsFresh Air Opening Dimensions, Horizontal Units Fresh Air Opening Dimensions, Vertical Units Wall Box Dimensions Wall BoxProjection Panel Dimensions Projection PanelPre-installation Installation considerations Installation PreparationReceiving and Handling Jobsite StorageService Access Pre-Installation ChecklistConnecting field piping to coil MechanicalDuct Connections Piping ConsiderationsCondensate Drain Venting the Hydronic Coil Figure I-MR-4. Close-up view of the changeover sensorBalancing The Manual Circuit Setter Valve Figure I-MR-8. Manual circuit setter valveMechanical Code of System Components in Piping Diagram Steam PipingUnit Wiring Diagrams Supply Power WiringWall Mounted Control Interconnection Wiring ElectricalTable I-ER-2. Low vertical free discharge motors, 115 volt Table I-ER-3. Decimal to fractional HP kW conversionTable I-ER-8. Fan-coil electric heat kW Table I-ER-9. Electric heat kWTable I-ER-10. Force Flo single-stage, max kW electric heat Table I-ER-11. Force Flo single stage, low kW electric heatTable I-ER-12. Force Flo 2-stage electric heat Installation Installing the UnitUnit Leveling Figure I-IP-3. Zone sensor with on/cancel Comm jack Figure I-IP-5. Zone sensor onlyInstalling Wall Mounted Controls Wiring InstructionsFan Mode Switch Installation Zone Sensor InstallationInstallation Checklist Unit LevelingCommunication Wiring Recommended Communication Wiring PracticesPre-startup Device AddressingPre-Startup Checklist Installation startup Tracer ZN510 & ZN520 Unit StartupManual Fan Mode Switch General Operation informationGeneral Information Relay BoardFan Mode Switch Operation SequenceTracer ZN010 & ZN510 Operation Tracer ZN520 OperationBinary Inputs Binary OutputsFan Mode Switch Analog InputsZone Sensors Supply Fan OperationTracer ZN520 Sequence of Operation Cooling Operation Heating OperationDischarge Air Tempering Fan Mode Operation Continuous Fan OperationFan Start on High Speed Electric Heat OperationManual Fresh Air Damper Economizer Damper OptionTable O-SO-12. Binary input configurations Table O-SO-13. Binary output configurationData Sharing Binary OutputsTable O-SO-14. Analog inputs Table O-SO-15. Analog inputsFan Switch On/Cancel ButtonsTable O-SO-16. Zone sensor wiring connections Zone SensorMaintenance diagnostics Table M-D-1. Tracer ZN520 DiagnosticsTranslating Multiple Diagnostics Resetting DiagnosticsDiagnostic Reset Cycling the Fan SwitchTable M-D-3. Fan outputs do not energize Table M-D-4. Valves Stay ClosedTable M-D-5. Valves Stay Open Table M-D-6. Electric Heat Not Operating Table M-D-7. Fresh Air Damper Stays OpenTable M-D-8. Fresh Air Damper Stays Closed Maintenance troubleshooting Troubleshooting the Relay BoardSwitch SW1 Controller Type Switch SW2 Electric HeatTroubleshooting Tracer ZN010, ZN510 & ZN520 Red Service LEDGreen Status LED Yellow Comm LEDTable M-T-1. Test sequence for 1-heat/1-cool configurations BOP5 BOP6Maintenance Maintenance ProceduresMain Drain Pan Coil Maintenance Steam and Hydronic Coil Cleaning ProcedureWinterizing the Coil Control Device Replacement Replacing the MotorPeriodic Maintenance Checklists Monthly ChecklistMonthly Maintenance Annual MaintenanceTypical wiring Csti Fan Speed SwitchCsti Non Fan Speed Switch Line voltage fan speed switch Tracer ZN010 with electric heat Tracer ZN510 with main and auxilliary valves ZN520 with 2-stage electric heat Page Page Page PL-TD-UNT-SVX07A-EN
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