Appendix-Unit Operation | Trane Tracer Unit Ventilator, ZN.520

Appendix—Unit Operation cont.

Table 39: Unit operation based on the effective heat/cool output

	Application mode input	Heat/cool mode input	Effective heat/ cool
	Application mode input	Heat/cool mode input	mode output
	(nviApplicMode)	(nviHeatCool)	mode output
	(nviApplicMode)	(nviHeatCool)	(nvoHeatCool)
			(nvoHeatCool)
	Cool	Any state	Cool
	Pre-cool	Any state	Pre-cool
	Off	Any state	Off
	Test	Any state	Determined by controller
	Fan only	Any state	Fan only

Unit Operation

Fan—Enabled

Heating—Disabled1

Cooling—Enabled

Damper

Fan—Enabled

Heating—Disabled1

Cooling—Enabled

Damper—Disabled

Fan—Disabled

Heating—Disabled

Cooling—Disabled

Damper—Disabled

Fan—Enabled

Heating—Enabled

Cooling—Enabled

Damper—Enabled

Fan—Enabled

Heating—Disabled

Cooling—Disabled

Damper—Enabled

1.Use of heat for supply air tempering and dehumidification remains available.

2.Night purge, Emergency heat, and Nul modes are not supported by the Tracer™ ZN.520 Unit Controller. If one of these modes is received by the controller, it is interpreted as Auto.

UV-SVP01A-EN

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Trane Tracer Unit Ventilator, ZN.520 manual Appendix-Unit Operation

Contents

Tracer ZN.520 for Classroom Unit Ventilator Installation Owner Diagnostics Installation of New Units Start-up Procedures Power Up Sequence Tracer ZN.520 Overview General Information General Information Tracer ZN.520 unit controller circuit board Controller Circuit Board Features Controller Features ServiceTypical Components Communication Configurations Peer-to-Peer CommunicationsIntegrated Comfort System Stand-Alone Communication InterfaceInteroperability Characteristic End Device SpecificationsStandard End Devices Description Standard End Devices Way Control Valve Time clock Zone sensor Dpdt Control Transformer Specifications Installation and Wiring Binary Inputs Generic/baseboard Heat Binary Output Binary Outputs Analog inputs Analog Inputs Mounting Vertical classroom unit ventilator end pocket Power Wiring Proper zone sensor placement Installing the Wall- Mounted Zone Sensor Optional Humidity 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 Summary Input/Output Summary Configurable parameters ConfigurationCooling source Heating source Binary Outputs1 Binary Inputs1 Binary input summary ConfigurationAnalog Inputs1 Analog input summary End Device Configurations Fan ConfigurationFan configuration ranges Default Discharge air limit ranges Default Valid range Setpoint defaults Default Valid rangeSetpoints Discharge Air Limits Occupied Bypass Timer Power-Up Control WaitMaintenance Timers Location Identifier Unit Identification TagWinking Unit Operation Power-UpHeating And Cooling Changeover Logic Occupancy Heat/Cool Changeover logic Cooling Operation Fan Off DelayHeating Operation Fan Operation Face-and-Bypass Damper Operation Valve OperationExhaust fan/damper operation Modulating Valves Water assumption chart Entering Water Temperature SamplingUnit Configuration Temperature Assumed1 DX Operation Economizer OperationElectric Heat Operation Baseboard Heat Operation Output Overrides Filter Status/ Maintenance TimerFan Status Other Modes Simple data sharing application Data Sharing-LonWorks More 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 LED Exit6 Test Procedure Troubleshooting Entering Water Temperature Failure Space Temperature FailureDischarge Air Temperature Limit Outdoor Air Temperature Failure Diagnostics Troubleshooting Translating Multiple Diagnostics Fans Rover service tool Valves 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 open Replacing Circuit Boards Tracer ZN.520 Unit Controller Replacement Fan Switch Resistance Values Hardwired Setpoint AdjustmentHardwired Thermistor Values Appendix Binary Configuration Appendix-Binary ConfigurationBinary configuration details Binary input or output Function Effective heat/ cool mode output nvoHeatCool Heat/cool mode input NviHeatCoolAppendix-Unit Operation Unit Operation Based On The Effective HEAT/COOL Output Appendix-Unit Operation Appendix-Data Lists Configuration properties1Data Lists Input/output listing1 Appendix-Timeclock Setting the Time ClockSet the Time and Day Set the Program Override Program Manual Operation Review and Change Programs Appendix-Timeclock Appendix-Location Identifier Location Identifier Location Identifier Location Identifier Trane Company