Trane Zone Controller, N512, CNT-SVX07C-EN manual Index

Page 81

Low-coil-temperature detection Diagnostic, 14, 59

Input, 14

M

Manual output test, 52

Modulating outdoor/return air dampers, 43

Modulating valves

Calibration, 42

Operation, 42

Morning cool-down, 39

Morning warm-up, 39

Mounting Cover, 12 Diagram, 12 Location, 11

Operating environment, 11 Procedures, 12

N

National Electrical Code, 7, 8, 9

Neuron IDs

Description, 9

Location of label, 51

O

Occupancy

Switch, 15

Switching devices, 4

Occupancy input, 15

Occupancy modes, 36

General, 36

Occupied, 36

Occupied bypass, 37

Occupied standby, 36

Unoccupied, 36

Operating environment, 11

Outdoor air damper

Troubleshooting, 66

Outdoor air temperature

Failure diagnostic, 60

Input, 18

Outdoor air temperature input, 18

Outdoor/return air dampers, 43

Output devices, 4

Overriding binary outputs, 22 General, 52

P

Peer-to-peer communication, 48

Power transformers, 4, 7

Power wiring, 7

Power-up sequence, 35

Product description, 1

Protection strategies, see Unit protection strategies

R

Random start, 35

Rover service tool Adding a device, 56 Configuring the controller, 1 Identifying a device, 56 User guide, 1

Verifying LonTalk communication, 56

Verifying PCMCIA communications, 56

S

Sensor

Humidity, 47

Sensors Application-specific, 19 CO2, 5, 20

Table of options, 5

Water and duct temperature, 4 Zone humidity, 5, 20

Zone temperature, 4

Sequence of operations, 35–50 ASHRAE Cycle 1, 45 ASHRAE Cycle 2, 45 Baseboard heat, 47 Dehumidification, 47 Discharge air temperature low

limit, 50 DX cooling, 46 Economizing, 45 Electric heat, 47 Exhaust control, 41

Face-and-bypass damper, 46 Fan off delay, 49

Fan operation, 40

Index

Fan status, 49 Filter-maintenance timer, 50 Four-pipe operation, 43 Freeze avoidance, 50 Freeze protection, 50 Heating/cooling mode, 39 Isolation valve, 46 Modulating-valve calibration, 42 Modulating-valve operation, 42 Morning cool-down, 39 Morning warm-up, 39 Occupancy modes, 36 Outdoor/return air, 43 Peer-to-peer communication, 48 Power-up sequence, 35 Random start, 35

Smart reset, 49

Timed override control, 37 Two-pipe operation, 43 Two-position damper control,

46

Two-position valve operation, 43

Unit protection strategies, 48 Valves, 42

Zone temperature control, 38

Service pin button, 51, 56

Smart reset

Diagnostic, 49, 59

Unit protection, 49

Specifications

AC power wiring, 7

Agency listing/compliance, 3 Clearances, 2 Dimensional diagram, 3 Dimensions, 2 Input/output terminal wiring, 7 LonTalk communication wiring

and addressing, 9 Storage environment, 2 Transformers, 8

Status indicators for operation and communication

Diagnostics, 58 General, 51

Green (status) LEDs, 57 LEDs, 51

Manual output test, 52 Red (service) LEDs, 56 Service pin button, 56 Test button, 51

Yellow (communication) LEDs, 57

Storage environment, 2

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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 Product description Overview and specificationsDimensions Storage environmentClearances Plastic-cover model dimensions and clearances Additional components Agency listing/complianceDamper actuators Tracer zone temperature sensor optionsZone humidity sensor CO2 sensorOverview and specifications AC-power wiring Input/output terminal wiringGeneral wiring information Communication-link wiring and addressing General wiring information Operating environment requirements Location recommendationsMounting the Tracer ZN521 zone controller Mounting recommendationsApplication SpeedfanMultiple Dehumidification Typical applications for the Tracer ZN521 zone controllerControlValve Economizing HeatElectricBinary inputs BI1 Low-coil-temperature detectionBI2 Condensate overflow Binary inputsBI4 Fan status BI3 Occupancy or generic binary inputAnalog inputs ZN Zone temperatureGND Ground terminals Analog inputsFAN Fan mode input AI1 Entering water temperatureSET Local setpoint AI3 Outdoor air temperature or generic temperature AI2 Discharge air temperatureAI4 configuration options and associated measurement ranges Configuration Measurement rangeAI4 Universal 4-20 mA AI4 terminal wiring CO2 measurement Generic binary output Binary outputsBinary output functions Binary output FunctionsOverriding binary outputs Wiring requirements and optionsRequired controller inputs for proper operation 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 Random start Power-up sequenceUnoccupied mode Occupied modeOccupied standby mode Occupancy modesTimed override control Occupied bypass modeZone temperature control Cascade zone controlSimplified zone control Discharge air tempering Heating or cooling modeMorning warm-up Morning cool-downFan operation Entering water temperature sampling functionExhaust control Exhaust controlModulating valve operation Valve operationModulating valve calibration Valve control optionsTwo-position valve operation Modulating outdoor/return air dampersIsolation-valve operation Two-pipe operationModulating outdoor air damper position Ashrae Cycle 1 conformance Ashrae Cycle 2 conformanceEconomizing free cooling Face-and-bypass damper operation Two-position control of a modulating outdoor air damperDX cooling operation Face-and-bypass, isolation-valve operationElectric heat operation Baseboard heat operationDehumidification Unit protection strategies Peer-to-peer communicationLow-coil-temperature protection Smart resetFan off delay Condensate overflowFilter-maintenance timer Freeze protection discharge air temperature low limitFreeze avoidance Tracer ZN521 zone controller circuit board Test buttonManual output test Output For nonClose damper, air Outdoor Open damper, air Outdoor BOP1 BOP2 BOP3 BOP4 BOP5 BOP6 BOP7 BOP8 BOP9 Step ResultRed LED Service indicator Service pin buttonInterpreting LEDs LED activity ExplanationYellow LED Communications indicator Green LED Status indicatorTypes of diagnostics DiagnosticsDiagnostics Table of diagnosticsDiagnostic Probable cause Consequences Type Fan unaffectedPosition Valved unaffectedDamper unaffected Status indicators for operation and communication Probable cause Explanation Fan does not energizeValves remain closed TroubleshootingDX or electric heat does not energize Valves remain openOutdoor air damper remains open Outdoor air damper remains closedOutdoor air damper remains open Troubleshooting Numerics IndexIndex Index Index Page Trane
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