Trane ZN.520 Communication Configurations, Peer-to-Peer Communications, Integrated Comfort System

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Communication Configurations

Note: The Tracer ZN.520 is a

connect to a maximum of 120

configured controller. It will

Tracer ZN.520 controllers.

not operate without a valid

 

downloaded configuration

 

file.

 

The Tracer ZN.520 controller sup-

 

ports ICS and peer-to-peer com-

 

munications as well as stand-

 

alone operation. A number of con-

 

trol features may be configured at

 

the factory or by using the Rover

 

service tool. (See “Configuration”

 

on page32, for more information.)

 

The ICS system also allows all of the classroom unit ventilators to share information without the presence of hardwired sensors at each unit. Some typical shared points include outside air temper- ature, entering water temperature, and occupancy schedules.

Peer-to-Peer

Communications

On a peer-to-peer communication

Integrated Comfort System

Note: The Tracer ZN.520 controller may only be used with Tracer Summit version

11.0or greater with a Comm5 communications card.

Classroom unit ventilators can op- erate as part of a large building au- tomation system controlled by Tracer Summit. The Tracer ZN.520 is linked directly to the Tracer Summit via a twisted pair commu- nication wire. Each Tracer Summit building automation system can

Figure 4: Communications link wire

The ICS system allows for com- plete communication with the classroom unit ventilators via Tracer ZN.520 unit controller. All points connected to the Tracer ZN.520 may be observed from the Tracer Summit front-end control- ler. The Tracer Summit can also initiate an alarm on a loss of per- formance or equipment malfunc- tions.

system, multiple Tracer ZN.520 controllers may share data, via a twisted pair communication wire,

without the need for a Tracer Sum- mit system. (See Figure 5: “Peer- to-peer communication connec- tions”)

Peer-to-peer communications al- lows features such as master/slave operation, in which multiple units operate off of a single zone sensor. This is typically seen in large spac- es requiring multiple units.

The Rover service tool is required to set up peer-to-peer communica- tions.

Figure 5: Peer-to-peer communication connections

UV-SVP01A-EN

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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