Trane UNT-SVX07A-EN manual Sequence, Fan Mode Switch Operation, Tracer ZN010 & ZN510 Operation

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sequence of

Operation operation

Fan Mode Switch Operation

Off

Fan is turned off, two-position damper option spring-returns closed.

Hi, Med, Lo

Fan runs continuously at the selected speed. The two-position damper option opens to an adjustable mechanical stop position.

Tracer ZN010 & ZN510

Operation

Off

Fan is off; control valves and fresh air damper option close. Low air temperature detection option is still active.

Auto (Fan Cycling)

Fan and fresh air damper cycle with control valve option to maintain setpoint temperature. In cooling mode, the fan cycles from off to medium and in heating mode it cycles from off to low. When no heating or cooling is required, the fan is off and the fresh air damper option closes.

Low/Med/High (Continuous Fan)

Fan operates continuously while control valve option cycles to maintain setpoint temperature. Fresh air damper option is open.

Tracer ZN520 Operation

Off

Fan is off; control valve options and fresh air damper options close. The low air temperature detection option is still active.

Auto

Fan speed control in the auto setting allows the modulating (3-wire floating point) or 2–position control valve option and three-speed fan to work cooperatively to meet precise capacity requirement, while minimizing fan speed (motor/energy/acoustics ) and valve position (pump energy, chilled water reset ). As the capacity requirement increases at low fan speed, the water valve opens. When the low fan speed capacity switch point is reached, the fan switches to medium speed and the water valve repositions to maintain an equivalent capacity. The reverse sequence takes place with a decrease in required capacity.

Low/Med/High

The fan runs continuously at the selected speed and the valve option will cycle to meet setpoint.

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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 30 control type 0 = none Digit 28 auxiliary control valve 0 = noneDigit 29 piping packages 0 = none Digit 31 control optionTable I-GI-1. Fan-coil component data Table I-GI-2. Low vertical fan-coil component dataModel K low vertical cabinet Available ModelsModel E horizontal recessed Model M inverted vertical cabinetFactory-Installed Piping Packages Vertical Concealed Unit Dimensions & weights, in-lbs DimensionsInstallation Weights 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 DHorizontal Recessed, Model E Installation Dimensions WeightsHorizontal Recessed Unit Dimensions, in-lbs 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 PanelReceiving and Handling Pre-installation Installation considerationsInstallation Preparation Jobsite StorageService Access Pre-Installation ChecklistDuct Connections Connecting field piping to coilMechanical 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 PipingWall Mounted Control Interconnection Wiring Unit Wiring DiagramsSupply Power 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 onlyFan Mode Switch Installation Installing Wall Mounted ControlsWiring Instructions Zone Sensor InstallationInstallation Checklist Unit LevelingPre-startup Communication WiringRecommended Communication Wiring Practices Device AddressingPre-Startup Checklist Installation startup Tracer ZN510 & ZN520 Unit StartupGeneral Information Manual Fan Mode SwitchGeneral Operation information Relay BoardTracer ZN010 & ZN510 Operation Fan Mode Switch OperationSequence Tracer ZN520 OperationBinary Inputs Binary OutputsZone Sensors Fan Mode SwitchAnalog Inputs Supply Fan OperationTracer ZN520 Sequence of Operation Discharge Air Tempering Cooling OperationHeating Operation Fan Mode Operation Continuous Fan OperationManual Fresh Air Damper Fan Start on High SpeedElectric Heat Operation Economizer Damper OptionData Sharing Table O-SO-12. Binary input configurationsTable O-SO-13. Binary output configuration Binary OutputsTable O-SO-14. Analog inputs Table O-SO-15. Analog inputsTable O-SO-16. Zone sensor wiring connections Fan SwitchOn/Cancel Buttons Zone SensorMaintenance diagnostics Table M-D-1. Tracer ZN520 DiagnosticsDiagnostic Reset Translating Multiple DiagnosticsResetting Diagnostics Cycling the Fan SwitchTable M-D-5. Valves Stay Open Table M-D-3. Fan outputs do not energizeTable M-D-4. Valves Stay Closed Table M-D-8. Fresh Air Damper Stays Closed Table M-D-6. Electric Heat Not OperatingTable M-D-7. Fresh Air Damper Stays Open Switch SW1 Controller Type Maintenance troubleshootingTroubleshooting the Relay Board Switch SW2 Electric HeatGreen Status LED Troubleshooting Tracer ZN010, ZN510 & ZN520Red Service LED Yellow Comm LEDTable M-T-1. Test sequence for 1-heat/1-cool configurations BOP5 BOP6Main Drain Pan MaintenanceMaintenance Procedures Winterizing the Coil Coil MaintenanceSteam and Hydronic Coil Cleaning Procedure Control Device Replacement Replacing the MotorMonthly Maintenance Periodic Maintenance ChecklistsMonthly Checklist 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