Trane Tracer ZN517 Installation And Operation Manual

Installation and
Operation

Tracer ZN517
Unitary Controller

CNT-SVX12C-EN

Installation and
Operation

Tracer™ ZN517
Unitary Controller

CNT-SVX12C-EN

April 2005

Tracer ZN517 Unitary Controller Installation and Operation

This guide and the information in it are the property of American Standard Inc. and may not be used or reproduced in whole or in part,
without the written permission of American Standard Inc. Trane, a business of American Standard, Inc., has a policy of continuous
product and product data improvement and reserves the right to change design and specification without notice.

Although Trane has tested the hardware and software described in this guide, no guarantee is offered that the hardware and software
are error free.

Trane reserves the right to revise this publication at any time and to make changes to its content without obligation to notify any per­son of such revision or change.

Trane may have patents or patent applications covering items in this publication. By providing this document, Trane does not imply
giving license to these patents.

The following are trademarks or registered trademarks of Trane: Trane, Tracer, Tracker, Rover.

®

™

The following are trademarks or registered trademarks of their respective companies or organizations: LonTalk and Neuron

®

™

Printed in the U.S.A.

© 2005 American Standard Inc. All rights reserved.

from Echelon Corporation.

CNT-SVX12C-EN

NOTICE:

Warnings and Cautions appear at appropriate sections throughout this manual. Read these carefully:

WARNING

Indicates a potentially hazardous situation, which, if not avoided, could result in death or serious injury.

CAUTION

Indicates a potentially hazardous situation, which, if not avoided, may result in minor or moderate injury.
It may also be used to alert against unsafe practices.

CAUTION

Indicates a situation that may result in equipment damage or property damage.

The following format and symbol conventions appear at appropriate sections throughout this manual:

IMPORTANT

Alerts installer, servicer, or operator to potential actions that could cause the product or system to
operate improperly but will not likely result in potential for damage.

Note:

A note may be used to make the reader aware of useful information, to clarify a point, or to describe
options or alternatives.

◆ This symbol precedes a procedure that consists of only a single step.

CNT-SVX12C-EN

Table of contents

Chapter 1 Overview and specifications . . . . . . . . . . . . . . . . . . 1

Product description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Operating environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Storage environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Agency listing/compliance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Factory default temperature setpoints . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Additional components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Power transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Zone temperature sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Discharge air temperature sensors. . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Damper actuators (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Chapter 2 Mounting the controller . . . . . . . . . . . . . . . . . . . . . 7

Location recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Mounting recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Chapter 3 Applications for the

2-heat/2-cool configuration. . . . . . . . . . . . . . . . . . 9

Wiring requirements and options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

DIP switch settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Binary outputs for 2-heat/2-cool applications . . . . . . . . . . . . . . . . . . . . 13

Binary output 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Overriding binary outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Binary inputs for 2-heat/2-cool applications. . . . . . . . . . . . . . . . . . . . . . 14

BI1: Occupancy or generic. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

BI2: Fan status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

CNT-SVX12C-EN i

Table of contents

Analog inputs for 2-heat/2-cool applications . . . . . . . . . . . . . . . . . . . . . 15

AI1: Universal 4–20 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

AI2: Outdoor air temperature or generic temperature . . . . . . . . . . 17

DAT: Discharge air temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

ZN: Zone temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

SET: Temperature setpoint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Chapter 4 Sequence of operations for the 2-heat/2-cool

configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Power-up sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Cascade zone control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Simplified zone control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Occupancy modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Occupied mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Unoccupied mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Occupied standby mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Occupied bypass mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Timed override control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Outdoor air damper operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Fan operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Peer-to-peer communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Economizing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Discharge air tempering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Demand control ventilation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Unit protection strategies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Filter-maintenance timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Fan off delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Fan status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Chapter 5 Applications for the 4-cool configuration . . . . . . 27

Wiring requirements and options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

DIP switch settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Binary outputs for 4-cool applications . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Binary inputs for 4-cool applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Analog inputs for 4-cool applications . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

ii CNT-SVX12C-EN

Binary output 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Overriding binary outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

BI1: Occupancy or generic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

BI2: Fan status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

AI1: Universal 4–20 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

AI2: Outdoor air temperature or generic temperature . . . . . . . . . . 35

DAT: Discharge air temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

ZN: Zone temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

SET: Temperature setpoint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Chapter 6 Sequence of operations for the 4-cool

configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Power-up sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Cascade zone control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Simplified zone control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Occupancy modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Occupied mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Unoccupied mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Occupied standby mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Occupied bypass mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Timed override control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Outdoor air damper operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Fan operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Peer-to-peer communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Economizing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Discharge air tempering. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Demand control ventilation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Unit protection strategies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Filter-maintenance timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Fan off delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Fan status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Table of contents

Chapter 7 Applications for the heat pump configuration . . 45

CNT-SVX12C-EN iii

Wiring requirements and options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

DIP switch settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Binary outputs for heat pump applications . . . . . . . . . . . . . . . . . . . . . . 49

Binary output 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Overriding binary outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Binary inputs for heat pump applications . . . . . . . . . . . . . . . . . . . . . . . 50

BI1: Occupancy or generic. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

BI2: Fan status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Analog inputs for heat pump applications . . . . . . . . . . . . . . . . . . . . . . . 51

AI1: Universal 4–20 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Table of contents

AI2: Outdoor air temperature or generic temperature . . . . . . . . . . 53

DAT: Discharge air temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

ZN: Zone temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

SET: Temperature setpoint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Chapter 8 Sequence of operations for the heat pump

configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Power-up sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Cascade zone control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Simplified zone control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Occupancy modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Occupied mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Unoccupied mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Occupied standby mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Occupied bypass mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Timed override control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Outdoor air damper operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Heating or cooling mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Fan operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Compressor operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Reversing valve operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Economizing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Discharge air tempering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Demand control ventilation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Peer-to-peer communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Unit protection strategies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Filter-maintenance timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Fan off delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Fan status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Chapter 9 PID control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

What PID loops do. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

PID calculations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Sampling frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

PID loop action . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

iv CNT-SVX12C-EN

Proportional calculation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Integral calculation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Derivative calculation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Direct action . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Reverse action . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Error deadband . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

Adjusting error deadband for modulating outputs . . . . . . . . . . . . . 69

Adjusting error deadband for staged outputs . . . . . . . . . . . . . . . . . 69

Other PID settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

Troubleshooting procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

Tips for specific problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

Changing the sampling frequency . . . . . . . . . . . . . . . . . . . . . . . . . . 72

Changing the gains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

Chapter 10 Status indicators for operation and

communication. . . . . . . . . . . . . . . . . . . . . . . . . . . 73

Test button. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

Manual output test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

Service Pin button. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

Interpreting LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Diagnostic types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Table of diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Table of contents

Chapter 11 General wiring information . . . . . . . . . . . . . . . . . . 81

Input/output terminal wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

Wiring specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

HVAC unit electrical circuit wiring . . . . . . . . . . . . . . . . . . . . . . . . . . 82

AC power wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

Communication-link wiring and addressing . . . . . . . . . . . . . . . . . . . . . 86

Chapter 12 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

Initial troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

Diagnosing operational problems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

CNT-SVX12C-EN v

Table of contents

vi CNT-SVX12C-EN

Chapter 1

Overview and specifications

This guide provides installation and configuration information for the
Tracer ZN517 unitary controller, as well as a description of its operations.
The overview includes a product description, specifications, and descrip­tions of ancillary products that may be necessary.

Product description

The Tracer ZN517 is an application-specific controller that provides
direct digital, zone temperature control. The controller can operate as a
stand-alone device or as part of a building automation system (BAS).
Communication between the controller and a BAS occurs via a LonTalk
communication link, which is based on the LonTalk

The controller is designed to be field-installed and is sent from the factory
configured for a 2-heat/2-cool application. You can change this configura­tion using the DIP switches located on the circuit board. The Tracer
ZN517 supports the following three configurations:

®

protocol.

• 2-heat/2-cool with optional economizer control

• 4-cool with optional economizer control

• Heat pump with optional economizer control

Features such as discharge air tempering and demand control ventilation
can be configured using the Rover service tool.

Note:

For information about using the Rover service tool, see the
Rover Operation and Programming guide (EMTX-SVX01B­EN).

Dimensions

Plastic-cover model dimensions

For complete dimensional drawing, see Figure 1 on page 3.

• Height: 5.375 in. (137 mm)

• Width: 6.875 in. (175 mm)

• Depth: 2 in. (51 mm)

CNT-SVX12C-EN 1

Chapter 1 Overview and specifications

Metal-cover model dimensions

For complete dimensional drawing, see Figure 2 on page 3.

• Height: 9.0 in (25 mm)

• Width: 10.37in. (263 mm)

• Depth: 2.25 in. (58 mm)

Clearances

For wiring, ventilation, and maintenance, provide the following minimum
clearances for the module:

Plastic-cover model
(see Figure 1 on page 3)

• Front: 4.0 in. (102 mm)

• Each side: 1.0 in. (25 mm)

• Top and bottom: 4.0 in. (102 mm)

Metal-cover model
(see Figure 2 on page 3)

• Front: 24.0 in. (610 mm)

• Each side: 2.0 in. (51 mm)

• Top and bottom: 1.0 in. (25 mm)

Power

The transformer must meet the following minimum requirements for the
controller and its output devices:

• 19–30 Vac (24 Vac nominal)

• 50/60 Hz

• 9 VA and 12 VA maximum per binary output utilized

Operating environment

Operate a Tracer ZN517 unitary controller in an indoor environment that
meets the following requirements:

• Temperature: From –40°F to 160°F (–40°C to 70°C)

• Relative humidity: From 5–90%, noncondensing

2 CNT-SVX12C-EN

Figure 1. Plastic-cover model dimensions and clearances

1 in.
(25 mm)

Operating environment

4 in
(102 mm)

5.625 in
(143 mm)

5.375 in (137 mm)

Clearances

Dimensions

6.31 in.
(160 mm)

Figure 2. Metal-cover model dimensions and clearances

1 in.

(25 mm)

4 in
(102 mm)

1. 875 in.
(48 mm)

4 in
(102 mm)

6.5 in.
(165 mm)

6.875 in
(175 mm)

2 in. (51 mm)

9 in.

(229 mm)

2 in.

(51 mm)

24 in.

(610 mm)

Clearances

Dimensions

CNT-SVX12C-EN 3

10.37 in.

(263 mm)

width with cover

1 in.

(25 mm)

2 in.

(51 mm)

1 in.

(25 mm)

2.25 in.

(58 mm)

7 in.

(178 mm)

0.28 in.
(7 mm)

9 in.

(229 mm)

10. 25 in .

(260 mm)

width without cover

Chapter 1 Overview and specifications

Storage environment

If you are storing a Tracer ZN517 unitary controller for a substantial
amount of time, store it in an indoor environment that meets the
following requirements:

• Temperature: From –40° to 185°F (–40° to 85°C)

• Relative humidity: From 5–95%, noncondensing

Agency listing/compliance

CE—Immunity: EN50082-2:1995

CE—Emissions: EN61000-3-2:1995

UL and C-UL 916 listed:

Energy management equipment

UL 94-5V (UL flammability rating for plenum use)

EN61000-6-2:1999

EN61000-3-3:1995
EN50081-1:1992 (CISPR 22)
EN55011:1998, Class B

FCC Part 15, Class A, CFR 47

Factory default temperature setpoints

The Tracer ZN517 unitary controller relies on a number of temperature
setpoints to control HVAC equipment. Table 1 gives the factory defaults
for these setpoints, which can all be edited with the Rover service tool or a
BAS.

Table 1. Factory default temperature setpoints

Setpoints

Default setpoints

Occupied cooling 74.0°F (23.3°C)

Occupied standby cooling 78.0°F (25.6°C)

Unoccupied cooling 85.0°F (29.4°C)

Occupied heating 71.0°F (21.7°C)

Occupied standby heating 67.0°F (19.4°C)

Unoccupied heating 60.0°F (15.6°C)

Occupied setpoint limits

Cooling setpoint high limit 110.0°F (43.3°C)

Cooling setpoint low limit 40.0°F (44.4°C)

Factory defaults

°F (°C)

4 CNT-SVX12C-EN

Factory default temperature setpoints

Table 1. Factory default temperature setpoints

Setpoints

Heating setpoint high limit 105.0°F (40.6°C)

Heating setpoint low limit 40.0°F (44.4°C)

Discharge air limits

High limit 170.6°F (77.0°C)

Low limit 37.4°F (3.0°C)

Control point high limit 150.8°F (66.0°C)

Control point low limit 44.6°F (7.0°C)

Outdoor air damper setup

Economizer enable temperature 53.6°F (12.0°C)

Factory defaults

°F (°C)

CNT-SVX12C-EN 5

Chapter 1 Overview and specifications

Additional components

The following components are required for proper equipment operation.
They are not included with the Tracer ZN517 unitary controller. Addi­tional components may also be required besides those described in this
section, depending on your application.

Power transformer

A transformer providing 24 Vac is required to power the Tracer ZN517
unitary controller and associated output relays and valve and damper
actuators (see “AC power wiring” on page 85).

Zone temperature sensors

Table 2 shows some of the Trane zone temperature sensors that are sup­ported by the Tracer ZN517 unitary controller. Contact your Trane sales
office for information about other compatible zone sensors.

Table 2. Trane zone temperature sensor options

Zone

BAS order

number

4190 1086 x x x

4190 1087 x

4190 1088 x x x x

4190 1089 x x

4190 1090 x x x x x

4190 1094 x x x

4190 7015
(stainless
steel wall
plate)

Setpoint

thumbwheel

Temperature

sensor

x

Timed override

buttons

Comm

jack

On Cancel

Discharge air temperature sensors

Discharge air temperature sensors must be Trane 10 kΩ (at 25°C) ther­mistors. The discharge air temperature (DAT) input may use a sealed
temperature sensor (part number 4190 1100) or a duct/immersion tem­perature sensor (part number 4190 1103).

Damper actuators (optional)

Actuators cannot exceed 12 VA draw at 24 Vac. Use actuators with on/off
action and spring return (to normally open or closed position), based on
the desired default position.

6 CNT-SVX12C-EN

Chapter 2

Mounting the controller

This chapter gives recommendations and requirements for mounting the
Tracer ZN517 unitary controller.

Location recommendations

For rooftop and heat pump applications, the controller can be mounted
inside the unit or at a convenient location inside the building. Trane
recommends locating the Tracer ZN517 unitary controller:

• Near the controlled piece of equipment to reduce wiring costs

• Where it is easily accessible for service personnel

• Where public access is restricted to minimize the possibility of tam-

pering or vandalism

CNT-SVX12C-EN 7

Chapter 2 Mounting the controller

Mounting recommendations

Mounting recommendations are as follows:

IMPORTANT

Mount the Tracer ZN517 unitary controller with the cover on to avoid
the possibility of damaging the circuit board during installation.

• Mount the controller in any direction, other than with the front of the

cover facing downward.

• Mount using the two

(see Figure 3). Mounting fasteners are not included.

• Attach the controller securely so it can withstand vibrations of associ-

ated HVAC equipment.

• When the controller is mounted in a small enclosed compartment,

complete all wiring connections before securing the controller in the
compartment.

Figure 3. Mounting the Tracer ZN517 unitary controller

3

/16in. (4.8 mm) radius mounting holes provided

8 CNT-SVX12C-EN

Chapter 3

Applications for the
2-heat/2-cool configuration

This chapter provides information for wiring input and output terminals
and setting DIP switches for typical 2-heat/2-cool applications. The func­tion of inputs and outputs is also defined for these applications.

The types of 2-heat/2-cool applications supported by the Tracer ZN517
unitary controller are:

• Rooftop units with or without economizers

• Split systems with or without economizers

CNT-SVX12C-EN 9

Chapter 3 Applications for the 2-heat/2-cool configuration

Wiring requirements and options

Table 3 shows required controller inputs for minimal proper operation of
all 2-heat/2-cool applications.

Table 3. Required controller inputs for all 2-heat/2-cool applications

Function Input source

24 Vac power Terminals: GND, 24 V “AC power wiring” on

Zone temperature Terminals: ZN, GND

or communicated

For more information,

see:

page 85

“ZN: Zone tempera­ture” on page 18

Table 4 shows optional controller inputs and outputs for specific
applications.

Table 4. Optional controller inputs and outputs for specific applications

Application Input/Output

Economizing Input:

DAT (discharge air temperature)

Input:
AI2 (outdoor air temperature)

Outputs:
24 V (24 Vac common)
OPN (binary output)
CLS (binary output)

Discharge air
tempering*

Demand control
ventilation*

Cascade control Input: DAT “Cascade zone con-

* In order to use this function, the economizing function must be enabled.

Input: DAT “Discharge air tem-

Input:
AI1 (CO

sensor)

2

For more information,

see:

“Economizing” on
page 23

pering” on page 24

“Demand control
ventilation” on
page 24

trol” on page 20

Figure 4 on page 11 shows a wiring diagram for the Tracer ZN517 that
includes all required and all optional components for 2-heat/2-cool appli­cations.

10 CNT-SVX12C-EN

ZONE SENSOR

ANALOG INPUTS

HVAC UNIT

BINARY INPUTS

BINARY OUTPUT

AC OUT

AC POWER

24 Vac

Wiring requirements and options

Figure 4. Wiring diagram for 2-heat/2-cool applications

Powe r*

Tr i- s t at e

modulating

economizer

(optional)

Common

H
N

24V

GND

24V

OPN

ECONOMIZERAC OUT

24V

GND

AC POWER

GND

CLS

R

RhRc 1G 432 5NO 5COM

Fan

G

Y1

HVAC UNIT

Compressor 1 contactor

Compressor 2 contactor

Heat stage 1

Heat stage 2

Y2

W1 W2

Generic binary output (optional)

BINARY OUTPUT

STATUS5NC

LED

SERVICE

LED

PIN

LonTalk

In

Out

*Terminals Rc and Rh are provided as
inputs for 24 Vac power from the con­trolled device. If the device has a sepa­rate heating and cooling units, use Rh
for heat and Rc for cooling. If com­bined, use only Rc (see “HVAC unit
electrical circuit wiring” on page 82).

COMM5

A BBA

Occupancy
or generic
(optional)

BINARY INPUTS

-BI2- SET-BI1- ZN

ANALOG INPUTS

AI1 -DAT-

+20GND

GND

+

Typical 3-wire

sensor

(optional)

(optional)
Fan status
(default:
normally closed

Dry contacts

only

closed = no flow
open = flow)
or generic

_

-AI2-

Discharge air

temperature

Outdoor air
temperature
(optional)

ZONE SENSOR

GND

COMM5

LED

LonTalk

1

2

3

4

5

On

Cancel

CNT-SVX12C-EN 11

Chapter 3 Applications for the 2-heat/2-cool configuration

DIP switch settings

Set the DIP switches on the circuit board for the 2-heat/2-cool configura­tion. The correct settings are shown in Figure 5.

Figure 5. DIP switch settings for the 2-heat/2-cool configuration

ON DIP

1234

ON DIP

1234

ON DIP

1234

2-heat/2-cool
without economizer

2-heat/2-cool with
economizer

12 CNT-SVX12C-EN

Binary outputs for 2-heat/2-cool applications

Binary outputs for 2-heat/2-cool
applications

This configuration supports rooftop units and split systems applications
that have the following components:

• Economizer

• Supply fan

• Cool 1

• Cool 2

• Heat 1

• Heat 2

• Exhaust

The Tracer ZN517 controller has eight binary outputs. Each binary out­put is a relay with a rating of 12 VA. Table 5 describes the function of
each output for 2-heat/2-cool applications.

Table 5. Binary outputs for 2-heat/2-cool applications

Binary output terminal label Function

OPN Economizer, drive open

CLS Economizer, drive closed

G Supply fan

1 (Y1) Cool stage 1

2 (Y2) Cool stage 2

3 (W1) Heat stage 1

4 (W2) Heat stage 2

5NO/5COM/5NC (binary output 5) Exhaust fan/occupancy/generic

Binary output 5

Use the Rover service tool to configure binary output 5 (5NO/5COM/5NC)
in one of the following ways. It is the only output that can be configured
as a generic binary output.

• Not used.

• Exhaust fan: Will energize when the economizer outside air damper

position is greater than the user-defined control point.

• Occupancy: Will energize when the Tracer ZN517 is in the occupied

mode.

• Generic: Can be monitored only by a BAS and has no direct effect on

Tracer ZN517 operation.

CNT-SVX12C-EN 13

Chapter 3 Applications for the 2-heat/2-cool configuration

Overriding binary outputs

Use the manual output test to manually control the outputs in a defined
sequence. For more information about the manual output test, see “Man­ual output test” on page 74.

Binary inputs for 2-heat/2-cool
applications

The Tracer ZN517 unitary controller has two binary inputs. Each binary
input associates an input signal of 0 Vac with open contacts and 24 Vac
with closed contacts. Table 6 gives the function of each binary input for
2 heat/2 cool applications. Each function is explained in the succeeding
paragraphs. For an explanation of the diagnostics generated by each
binary input, see “Table of diagnostics” on page 79. For more information
about how the controller operates, see Chapter 4, “Sequence of operations
for the 2-heat/2-cool configuration”.”

Table 6. Binary inputs for 2-heat/2-cool applications

Binary input

terminal label

BI1 Occupancy or generic

BI2 Fan status

Function

BI1: Occupancy or generic

The function of the occupancy input is to save energy by increasing the
range of zone setpoints when the zone is unoccupied. BI1 is used for two
occupancy-related functions. For stand-alone controllers, this binary
input can be hard-wired to a binary switch, clock, or occupancy sensor to
determine the occupancy mode—either occupied or unoccupied. For con­trollers receiving a BAS-communicated occupancy request, the function of
BI1 is to change the mode from occupied to occupied standby. (For more
information on occupancy-related functions, see “Occupancy modes” on
page 20.) An occupancy sensor with a binary output may be used.

BI1 is the only input that can be configured as a generic binary input.
When configured as a generic binary input, it can be monitored only by a
BAS, and has no direct effect on Tracer ZN517 operation.

BI2: Fan status

The fan status input provides feedback to the controller regarding the
fan’s operating status. If BI2 is wired to a fan status switch and the input
indicates that the fan is not operating when the controller has the fan
controlled to on, the controller will generate a Local Fan Switch Failure
diagnostic. (For more information, see “Fan status” on page 25.)

14 CNT-SVX12C-EN

Analog inputs for 2-heat/2-cool applications

Analog inputs for 2-heat/2-cool
applications

The Tracer ZN517 controller has five analog inputs. Table 7 describes the
function of each input for 2-heat/2-cool applications. Each function is
explained in the succeeding paragraphs. For an explanation of the diag­nostics generated by each analog input, see “Table of diagnostics” on
page 79. For more information about how the controller operates, see
Chapter 4, “Sequence of operations for the 2-heat/2-cool configuration”.

Table 7. Analog inputs for 2-heat/2-cool applications

Analog input

terminal label

AI1 Universal analog input

AI2 Outdoor air temperature

DAT Discharge air temperature

ZN Zone temperature (required)

SET Temperature setpoint

Note:

Use a GND terminal as the common ground for all zone sensor
analog inputs. See Figure 4 on page 11.

Function

AI1: Universal 4–20 mA

The AI1 analog input can be configured in one of the three ways shown in
Table 8.

Table 8. AI1 configuration options and associated measurement ranges

Configuration Measurement range

Generic 4–20 mA input 0–100%

(4 mA=0%; 20 mA=100%)

CO2 measurement 0–2000 ppm

(4 mA=0 ppm; 20 mA=2000 ppm)

Relative humidity (RH) measurement 0–100%

(4 mA=0% RH; 20 mA=100% RH)

CNT-SVX12C-EN 15

If this input is not needed for an application, configure it as Not Used.
This disables the generation of diagnostics.

Note:

AI1 is polarity sensitive.

For the generic input configuration, a 4–20 mA sensor must be hard­wired to the AI1 terminal. (Wiring is dependent on the specific applica-

Chapter 3 Applications for the 2-heat/2-cool configuration

tion.) The sensor communicates a value of 0–100% to the BAS. This con­figuration has no direct effect on Tracer ZN517 operation.

For the CO

measurement configuration, a 4–20 mA sensor must be hard-

2

wired to the AI1 terminal as shown in Figure 6. The sensor will transmit
a 0–2000 ppm value to the BAS. This configuration has no direct effect on
Tracer ZN517 operation. If a valid value is established and then is no
longer present, the controller generates a CO

Sensor Failure diagnostic.

2

Figure 6. AI1 terminal wiring: CO

Tracer ZN517

CO

sensor

2

(Trane part number:

4190 4100 or 4190 4101)

measurement

2

24 Vac

{{

24 Vac

GND

+20GND

Out

AI1

For the RH measurement configuration, a hard-wired 4–20 mA zone
humidity sensor (see Figure 7) must provide a value to the controller. If a
valid hard-wired or communicated relative humidity value is established
and then is no longer present, the controller generates an RH Sensor Fail­ure diagnostic and disables the dehumidification function. The RH sensor
is used only to provide a valid humidity reading to a BAS; it does not
affect the operation of the Tracer ZN517.

Figure 7. AI1 terminal wiring: RH measurement

Figure Note:

The +20 terminal provides 20 ±2 Vdc that is used to power a Trane RH sensor (part
numbers 4190 1109, 4190 7011, 4190 7012, 4190 7014).

16 CNT-SVX12C-EN

+20GND

+

AI1

–

Tracer ZN517

RH sensor

Analog inputs for 2-heat/2-cool applications

AI2: Outdoor air temperature or generic temperature

The AI2 analog input can functions as either:

• An outdoor air temperature input

• A generic temperature input

If AI2 is configured as the local (hard-wired) outdoor air temperature
input, the controller receives the temperature as a resistance signal from
a 10 kΩ thermistor wired to analog input AI2. An outdoor air tempera­ture value communicated by means of a LonTalk link can also be used for
controllers operating on a BAS. If both hard-wired and communicated
outdoor air temperature values are present, the controller uses the com­municated value.

If you set DIP switch 3 to
on page 12), you automatically configure AI2 as an outdoor air tempera­ture input. Economizing (free cooling) is a function whereby outdoor air is
used as a source of cooling before hydronic or DX cooling is used. The
Tracer ZN517 uses the outdoor air temperature value to determine
whether economizing is feasible. Economizing is not possible without a
valid outdoor air temperature. (For more information, see “Economizing”
on page 23.)

ON for economizing (see “DIP switch settings”

If AI2 is configured as a generic temperature input, it can be monitored
by a BAS. The controller receives the temperature as a resistance signal
from a 10 kΩ thermistor wired to analog input AI2. The generic tempera­ture input can be used with any Trane 10 kΩ thermistor. The thermistor
can be placed in any location and has no effect on the operation of the con­troller. If you set DIP switch 3 to
page 12), you automatically configure AI2 as a generic temperature input.

Note:

AI2 is not polarity sensitive; you can connect either terminal to
either sensor lead.

OFF (see “DIP switch settings” on

DAT: Discharge air temperature

The DAT analog input functions as the local discharge air temperature
input. The controller receives the temperature as a resistance signal from
a 10 kΩ thermistor wired to analog input DAT. The thermistor is typically
located downstream from all unit heating and cooling coils at the unit dis­charge area.

Trane recommends the use of a discharge air temperature sensor to uti­lize the cascade control function (see “Cascade zone control” on page 20).
Cascade control is a more accurate method of temperature control. If no
discharge air temperature sensor is used, the controller will default to
control based solely on the zone temperature (see “Simplified zone con­trol” on page 20).

CNT-SVX12C-EN 17

Note:

DAT is not polarity sensitive; you can connect either terminal
to either sensor lead.

Chapter 3 Applications for the 2-heat/2-cool configuration

ZN: Zone temperature

The ZN analog input functions as the local (hard-wired) zone temperature
input. The controller receives the temperature as a resistance signal from
a 10 kΩ thermistor in a standard Trane zone sensor wired to analog input
ZN. A communicated zone temperature value via the LonTalk communi­cations link can also be used for controllers operating on a BAS. When
both a hard-wired and communicated zone temperature value is present,
the controller uses the communicated value. If neither a hard-wired nor a
communicated zone temperature value is present, the controller gener­ates a Space Temperature Failure diagnostic.

The ZN analog input is also used to communicate timed override requests
and cancel requests to the controller for applications utilizing a Trane
zone sensor with the ON and CANCEL button option.

SET: Temperature setpoint

The SET analog input functions as the local (hard-wired) temperature
setpoint input for applications utilizing a Trane zone sensor with a tem­perature setpoint thumbwheel. Use the Rover service tool or a BAS to
enable or disable the local setpoint input. A communicated setpoint value
via the LonTalk communications link can also be used for controllers
operating on a BAS. If both a hard-wired and a communicated setpoint
value are present, the controller uses the communicated value. If neither
a hard-wired nor a communicated setpoint value is present, the controller
uses the stored default setpoints (configurable using the Rover service
tool or a BAS). If a valid hard-wired or communicated setpoint value is
established and then is no longer present, the controller generates a Local
Space Setpoint Failure diagnostic.

18 CNT-SVX12C-EN