Trane ZN.520, Tracer Unit Ventilator manual Vertical classroom unit ventilator end pocket

Page 20

Installation and Wiring

The mounting position on the ver- tical classroom unit ventilator configuration allows complete ac- cess to the Tracer ZN.520 by re-

moving the front panel. (See Figure 9: “Vertical classroom unit ventilator end pocket”) The

mounting plate swings out of the way with the removal of a single screw to allow access to the com- ponents behind the control board.

The mounting plate on the hori- zontal classroom unit ventila- tor configuration is designed to slide out with the removal of a sin- gle screw for complete access to the Tracer ZN.520. (See Figure 10: “Horizontal classroom unit venti- lator end pocket”) The location of the control board on this unit con- figuration allows complete access to the other components in the end pocket when the front panel is removed.

For additional convenience, quick connects and modular wire har- nesses are used on the control board and mounting plate. (See

Figure 11: “Quick connects to con- trol board in the classroom unit ventilator”) These quick connects

help facilitate ease of wiring devic- es (e.g., zone sensor) to the control board, and helps add accessibility to major components.

Figure 11: Quick connects to control board in the classroom unit ventilator

Figure 9: Vertical classroom unit ventilator end pocket

Figure 10: Horizontal classroom unit ventilator end pocket

UV-SVP01A-EN

23

Image 20

Contents Installation Owner Diagnostics Tracer ZN.520 for Classroom Unit VentilatorStart-up Procedures Installation of New UnitsPower Up Sequence General Information Tracer ZN.520 OverviewGeneral Information Controller Circuit Board Features Tracer ZN.520 unit controller circuit boardTypical Components Controller FeaturesService Integrated Comfort System Communication ConfigurationsPeer-to-Peer Communications Interoperability Stand-AloneCommunication Interface End Device Specifications CharacteristicStandard End Devices DescriptionStandard End Devices Way Control Valve Time clock Zone sensor Dpdt Control Transformer Installation and Wiring SpecificationsBinary Inputs Binary Outputs Generic/baseboard Heat Binary OutputAnalog Inputs Analog inputsMounting Vertical classroom unit ventilator end pocket Wiring PowerInstalling the Wall- Mounted Zone Sensor Optional Proper zone sensor placementHumidity and CO2 Sensors Typical Wiring Diagram-Wall Mounted Zone Sensor Typical Wiring Diagram-Unit Mounted Zone Sensor Typical Wiring Diagram-Unit Input/Output Summary Input and output summaryInput/Output Summary Configuration Configurable parametersCooling source Heating sourceBinary Outputs1 Binary input summary Configuration Binary Inputs1Analog Inputs1 Analog input summaryFan Configuration End Device ConfigurationsFan configuration ranges DefaultSetpoint defaults Default Valid range Discharge air limit ranges Default Valid rangeSetpoints Discharge Air LimitsMaintenance Timers Occupied Bypass TimerPower-Up Control Wait Winking Location IdentifierUnit Identification Tag Power-Up Unit OperationHeating And Cooling Changeover Logic OccupancyHeat/Cool Changeover logic Fan Off Delay Cooling OperationHeating Operation Fan OperationValve Operation Face-and-Bypass Damper OperationExhaust fan/damper operation Modulating ValvesEntering Water Temperature Sampling Water assumption chartUnit Configuration Temperature Assumed1Economizer Operation DX OperationElectric Heat Operation Baseboard Heat OperationFilter Status/ Maintenance Timer Output OverridesFan Status Other ModesData Sharing-LonWorks Simple data sharing applicationMore 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 Troubleshooting Red Service LEDBlack Service Push Button Yellow Comm LEDTest Procedure Exit6Troubleshooting Space Temperature Failure Entering Water Temperature FailureDischarge Air Temperature Limit Outdoor Air Temperature FailureDiagnostics Troubleshooting Translating Multiple Diagnostics Rover service tool FansValves stay open Probable cause Possible Explanation ValvesValves stay closed Probable cause Possible Explanation Outdoor air damper stays closed Probable cause Explanation DX/Electric HeatOutside Air Damper Outdoor air damper stays open Probable Cause ExplanationTracer ZN.520 Unit Controller Replacement Replacing Circuit BoardsHardwired Setpoint Adjustment Fan Switch Resistance ValuesHardwired Thermistor Values AppendixAppendix-Binary Configuration Binary ConfigurationBinary configuration details Binary input or output FunctionHeat/cool mode input NviHeatCool Effective heat/ cool mode output nvoHeatCoolAppendix-Unit Operation Unit Operation Based On The Effective HEAT/COOL OutputAppendix-Unit Operation Configuration properties1 Appendix-Data ListsData Lists Input/output listing1Setting the Time Clock Appendix-TimeclockSet the Time and Day Set the ProgramReview and Change Programs Override Program Manual OperationAppendix-Timeclock Appendix-Location Identifier Location Identifier Location Identifier Location Identifier Trane Company