Trane Tracer Unit Ventilator, ZN.520 manual Wiring, Power

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Installation and Wiring

Wiring

!WARNING

Warning! Disconnect all elec- trical power before servicing unit to prevent injury or death due to electrical shock. Use copper conductors only. The use of aluminum or other incorrect types of wire may result in overheating and equipment damage.

!CAUTION

Caution: To prevent damage to the unit ventilator, refer to the diagram provided on the inside of the unit's access panel for specific wiring infor-

mation. All controls are wired at the factory. Single point power, zone sensor, and communication wiring is to be installed by the contractor.

Important! All wiring must comply with state, local, and federal guidelines. Contact the appropriate local agency for furthur information.

Important! Wires for temperature sensors, communication lines, 24 VAC, and contact closure sensing inputs should not be bundled with or run near high voltage wiring.

qPower wiring must be separated from the Tracer ZN.520 and all low voltage wires. External input wires should be run in separate conduits from high voltage wires.

qWires connected to pin headers should be formed and routed so as to cause minimum strain on the Tracer ZN.520 connector.

qA minimum of 1.5" clearance (from the pin centerline) for wires up to 16 AWG is recommended for bending and forming wires.

qAll sensor and input circuits are at or near ground potential. Do not connect any sensor or input circuit to an external ground connection.

qA close-coupled ground connection is required for the Tracer ZN.520. T

qTable 7: Tracer ZN.520 Wiring Requirements, shows Tracer ZN.520 wire types and lengths.

Table 7: Tracer ZN.520 Wiring Requirements

	Application	Wire Type	Length

	Contact Closure	18 AWG	Up to
	Contact Closure	18 AWG	1000 ft.
			1000 ft.
	24 VAC	16-22 AWG	Up to
	24 VAC	16-22 AWG	1000 ft.
			1000 ft.
	Thermostat	16-22 AWG	Up to
	Thermostat	16-22 AWG	1000 ft.
			1000 ft.
	Zone	16-22 AWG	Up to
	Sensor	16-22 AWG	200 ft.
	Sensor		200 ft.
	Communications	Belden 8760	Up to
		or equivalent	5000 ft.

Power

The Tracer ZN.520 controller is

powered by 24 VAC. (See Table 7: “Tracer ZN.520 Wiring Require- ments”)A total of two 1/4-inch

quick-connect terminals are pro- vided for 24 VAC connection to the board.

Figure 12: Power connection to the Tracer ZN.520 unit controller

24	UV-SVP01A-EN

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Contents Tracer ZN.520 for Classroom Unit Ventilator Installation Owner DiagnosticsInstallation of New Units Start-up ProceduresPower Up Sequence Tracer ZN.520 Overview General InformationGeneral Information Tracer ZN.520 unit controller circuit board Controller Circuit Board FeaturesController Features ServiceTypical Components Communication Configurations Peer-to-Peer CommunicationsIntegrated Comfort System Stand-Alone Communication InterfaceInteroperability Characteristic End Device SpecificationsStandard End Devices DescriptionStandard End Devices Way Control Valve Time clock Zone sensor Dpdt Control Transformer Specifications Installation and WiringBinary Inputs Generic/baseboard Heat Binary Output Binary OutputsAnalog inputs Analog InputsMounting Vertical classroom unit ventilator end pocket Power WiringProper zone sensor placement Installing the Wall- Mounted Zone Sensor OptionalHumidity and CO2 Sensors Typical Wiring Diagram-Wall Mounted Zone Sensor Typical Wiring Diagram-Unit Mounted Zone Sensor Typical Wiring Diagram-Unit Input and output summary Input/Output SummaryInput/Output Summary Configurable parameters ConfigurationCooling source Heating sourceBinary Outputs1 Binary Inputs1 Binary input summary ConfigurationAnalog Inputs1 Analog input summaryEnd Device Configurations Fan ConfigurationFan configuration ranges DefaultDischarge air limit ranges Default Valid range Setpoint defaults Default Valid rangeSetpoints Discharge Air LimitsOccupied Bypass Timer Power-Up Control WaitMaintenance Timers Location Identifier Unit Identification TagWinking Unit Operation Power-UpHeating And Cooling Changeover Logic OccupancyHeat/Cool Changeover logic Cooling Operation Fan Off DelayHeating Operation Fan OperationFace-and-Bypass Damper Operation Valve OperationExhaust fan/damper operation Modulating ValvesWater assumption chart Entering Water Temperature SamplingUnit Configuration Temperature Assumed1DX Operation Economizer OperationElectric Heat Operation Baseboard Heat OperationOutput Overrides Filter Status/ Maintenance TimerFan Status Other ModesSimple data sharing application Data Sharing-LonWorksMore complex data sharing application Heating And Cooling Changeover Logic Heat/Cool Changeover logic Cooling Operation Valve Operation Entering Water Temperature Sampling Economizer Operation Output Overrides Data Sharing-LonWorks More complex data sharing application Red Service LED TroubleshootingBlack Service Push Button Yellow Comm LEDExit6 Test ProcedureTroubleshooting Entering Water Temperature Failure Space Temperature FailureDischarge Air Temperature Limit Outdoor Air Temperature FailureDiagnostics Troubleshooting Translating Multiple Diagnostics Fans Rover service toolValves Valves stay closed Probable cause Possible ExplanationValves stay open Probable cause Possible Explanation DX/Electric Heat Outside Air DamperOutdoor air damper stays closed Probable cause Explanation Probable Cause Explanation Outdoor air damper stays openReplacing Circuit Boards Tracer ZN.520 Unit Controller ReplacementFan Switch Resistance Values Hardwired Setpoint AdjustmentHardwired Thermistor Values AppendixBinary Configuration Appendix-Binary ConfigurationBinary configuration details Binary input or output FunctionEffective heat/ cool mode output nvoHeatCool Heat/cool mode input NviHeatCoolAppendix-Unit Operation Unit Operation Based On The Effective HEAT/COOL OutputAppendix-Unit Operation Appendix-Data Lists Configuration properties1Data Lists Input/output listing1Appendix-Timeclock Setting the Time ClockSet the Time and Day Set the ProgramOverride Program Manual Operation Review and Change ProgramsAppendix-Timeclock Appendix-Location Identifier Location Identifier Location Identifier Location Identifier Trane Company