Trane CNT-SVX07C-EN, Zone Controller, N512 manual Manual output test

Page 62

Chapter 6 Status indicators for operation and communication

Manual output test

The manual output test sequentially turns on and off all binary outputs to verify their operation. The test overrides normal operation of the con- troller, which is suspended while the test is being performed.

Use the manual output test to:

•Verify output wiring and operation

•Force the water valve(s) open to balance the hydronic system

•Clear diagnostics and restore normal operation (although not a pri- mary function of the manual output test)

The manual output test is performed either by repeatedly pressing the Test button to proceed through the test sequence or by using the Rover service tool. Table 11 on page 53 lists the outputs for non-face-and-bypass unit configurations in the sequence in which they are verified; Table 12 on page 55 lists the outputs for face-and-bypass unit configurations in the sequence in which they are verified.

The procedure is as follows:

1.Press and hold the Test button for 3 to 4 seconds, then release it to start the test mode. The green (status) LED goes off when you press the Test button, and then it blinks (as described in Table 14 on page 57) when the Test button is released to indicate that the control- ler is in manual test mode.

2.Press the Test button (no more than once per second) to advance through the test sequence. Table 11 and Table 12 show the resulting activities of the binary outputs.

Note:

The outputs are not subject to minimum on or off times during the test sequence.

52	CNT-SVX07C-EN

Image 62

Contents Installation and Operation Tracer ZN521 Zone Controller Page CNT-SVX07C-EN April CNT-SVX07C-EN Tracer ZN521 Zone Controller Installation and Operation CNT-SVX07C-EN Contents Sequence of operations Status indicators for operation and communication Troubleshooting Index Overview and specifications Product descriptionClearances DimensionsStorage environment Plastic-cover model dimensions and clearances Agency listing/compliance Additional componentsZone humidity sensor Tracer zone temperature sensor optionsDamper actuators CO2 sensorOverview and specifications Input/output terminal wiring AC-power wiringGeneral wiring information Communication-link wiring and addressing General wiring information Location recommendations Operating environment requirementsMounting recommendations Mounting the Tracer ZN521 zone controllerControlValve Economizing Typical applications for the Tracer ZN521 zone controllerApplication SpeedfanMultiple Dehumidification HeatElectricBI2 Condensate overflow BI1 Low-coil-temperature detectionBinary inputs Binary inputsBI3 Occupancy or generic binary input BI4 Fan statusGND Ground terminals ZN Zone temperatureAnalog inputs Analog inputsSET Local setpoint FAN Fan mode inputAI1 Entering water temperature AI2 Discharge air temperature AI3 Outdoor air temperature or generic temperatureAI4 Universal 4-20 mA AI4 configuration options and associated measurement rangesConfiguration Measurement range AI4 terminal wiring CO2 measurement Binary output functions Binary outputsGeneric binary output Binary output FunctionsRequired controller inputs for proper operation Wiring requirements and optionsOverriding binary outputs Function Input source For more information SeeTwo-pipe hydronic-cooling unit Two-pipe hydronic-heating unit Two-pipe hydronic heating/cooling unit with auto changeover Four-pipe hydronic heating/cooling unit Four-pipe heating/cooling unit with auto changeover Two-pipe heating unit with DX cooling Electric heat unit with DX cooling Electric heat unit Two-pipe heating unit with face-and-bypass damper Two-pipe heating/cooling unit with face-and-bypass damper Four-pipe heating/cooling unit with face-and-bypass damper Input/output functions and wiring for typical applications Power-up sequence Random startOccupied standby mode Occupied modeUnoccupied mode Occupancy modesOccupied bypass mode Timed override controlSimplified zone control Zone temperature controlCascade zone control Morning warm-up Heating or cooling modeDischarge air tempering Morning cool-downEntering water temperature sampling function Fan operationExhaust control Exhaust controlModulating valve calibration Valve operationModulating valve operation Valve control optionsIsolation-valve operation Modulating outdoor/return air dampersTwo-position valve operation Two-pipe operationModulating outdoor air damper position Economizing free cooling Ashrae Cycle 1 conformanceAshrae Cycle 2 conformance DX cooling operation Two-position control of a modulating outdoor air damperFace-and-bypass damper operation Face-and-bypass, isolation-valve operationDehumidification Electric heat operationBaseboard heat operation Peer-to-peer communication Unit protection strategiesFan off delay Smart resetLow-coil-temperature protection Condensate overflowFreeze avoidance Filter-maintenance timerFreeze protection discharge air temperature low limit Test button Tracer ZN521 zone controller circuit boardManual output test For non OutputClose damper, air Outdoor Open damper, air Outdoor Step Result BOP1 BOP2 BOP3 BOP4 BOP5 BOP6 BOP7 BOP8 BOP9Interpreting LEDs Service pin buttonRed LED Service indicator LED activity ExplanationGreen LED Status indicator Yellow LED Communications indicatorDiagnostics Types of diagnosticsDiagnostic Probable cause Consequences Type Table of diagnosticsDiagnostics Fan unaffectedValved unaffected PositionDamper unaffected Status indicators for operation and communication Fan does not energize Probable cause ExplanationTroubleshooting Valves remain closedValves remain open DX or electric heat does not energizeOutdoor air damper remains closed Outdoor air damper remains openOutdoor air damper remains open Troubleshooting Index NumericsIndex Index Index Page Trane