Trane Air-Fi WCS-SB Installation and operating instructions

SAFETY WARNING
Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, and air-conditioning equipment
can be hazardous and requires specific knowledge and training. Improperly installed, adjusted or altered equipment by an unqualified person could result in death or
serious injury. When working on the equipment, observe all precautions in the literature and on the tags, stickers, and labels that are attached to the equipment.
July 2022 BAS-SVX40K-EN
Installation, Operation, and Maintenance
Air-Fi® Wireless System

©2022 Trane BAS-SVX40K-EN
Introduction
Read this manual thoroughly before operating or servicing this unit.
Warnings, Cautions, and Notices
Safety advisories appear throughout this manual as required. Your personal safety and the proper
operation of this machine depend upon the strict observance of these precautions.
The three types of advisories are defined as follows:
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, could result in minor or
moderate injury. It could also be used to alert against unsafe practices.
NOTICE
Indicates a situation that could result in equipment or property-damage only accidents.
Important Environmental Concerns
Scientific research has shown that certain man-made chemicals can affect the earth’s naturally
occurring stratospheric ozone layer when released to the atmosphere. In particular, several of the
identified chemicals that may affect the ozone layer are refrigerants that contain Chlorine, Fluorine and
Carbon (CFCs) and those containing Hydrogen, Chlorine, Fluorine and Carbon (HCFCs). Not all
refrigerants containing these compounds have the same potential impact to the environment. Trane
advocates the responsible handling of all refrigerants-including industry replacements for CFCs and
HCFCs such as saturated or unsaturated HFCs and HCFCs.
Important Responsible Refrigerant Practices
Trane believes that responsible refrigerant practices are important to the environment, our customers,
and the air conditioning industry. All technicians who handle refrigerants must be certified according to
local rules. For the USA, the Federal Clean Air Act (Section 608) sets forth the requirements for
handling, reclaiming, recovering and recycling of certain refrigerants and the equipment that is used in
these service procedures. In addition, some states or municipalities may have additional requirements
that must also be adhered to for responsible management of refrigerants. Know the applicable laws and
follow them.
WARNING
Proper Field Wiring and Grounding Required!
Failure to follow code could result in death or serious injury.
All field wiring MUST be performed by qualified personnel. Improperly installed and grounded
field wiring poses FIRE and ELECTROCUTION hazards. To avoid these hazards, you MUST
follow requirements for field wiring installation and grounding as described in NEC and your
local/state/national electrical codes.

BAS-SVX40K-EN 3
WARNING
Personal Protective Equipment (PPE) Required!
Failure to wear proper PPE for the job being undertaken could result in death or serious injury.
Technicians, in order to protect themselves from potential electrical, mechanical, and chemical
hazards, MUST follow precautions in this manual and on the tags, stickers, and labels, as well
as the instructions below:
• Before installing/servicing this unit, technicians MUST put on all PPE required for the
work being undertaken (Examples; cut resistant gloves/sleeves, butyl gloves, safety
glasses, hard hat/bump cap, fall protection, electrical PPE and arc flash clothing).
ALWAYS refer to appropriate Safety Data Sheets (SDS) and OSHA guidelines for proper
PPE.
• When working with or around hazardous chemicals, ALWAYS refer to the appropriate SDS
and OSHA/GHS (Global Harmonized System of Classification and Labelling of Chemicals)
guidelines for information on allowable personal exposure levels, proper respiratory
protection and handling instructions.
• If there is a risk of energized electrical contact, arc, or flash, technicians MUST put on all
PPE in accordance with OSHA, NFPA 70E, or other country-specific requirements for arc
flash protection, PRIOR to servicing the unit. NEVER PERFORM ANY SWITCHING,
DISCONNECTING, OR VOLTAGE TESTING WITHOUT PROPER ELECTRICAL PPE AND
ARC FLASH CLOTHING. ENSURE ELECTRICAL METERS AND EQUIPMENT ARE
PROPERLY RATED FOR INTENDED VOLTAGE.
WARNING
Follow EHS Policies!
Failure to follow instructions below could result in death or serious injury.
• All Trane personnel must follow the company’s Environmental, Health and Safety (EHS)
policies when performing work such as hot work, electrical, fall protection, lockout/
tagout, refrigerant handling, etc. Where local regulations are more stringent than these
policies, those regulations supersede these policies.
• Non-Trane personnel should always follow local regulations.
Copyright
This document and the information in it are the property of Trane, and may not be used or reproduced in
whole or in part without written permission. 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.
Trademarks
All trademarks referenced in this document are the trademarks of their respective owners.
Revision History
• Updated the Overiew chapter.
• Updated Automatic Network Formation and Sensor Association section in Overview chapter.
• Updated Design Consideration for BCI-I, BCI-R, BCI2-I and BCI2-R section in the Pre-Installation
chapter.
• Updated Establishing an Air-Fi® Network chapter.
• Added support and installation instructions for Air-Fi Wireless sensors applied with BACnet MS/TP
and BACnet/IP (hardwired or Wi-Fi).
Introduction

4BAS-SVX40K-EN
• Added Installing Air-Fi Wireless Sensors with BACnet MS/TP or BACnet/IP section in Establishing
an Air-Fi® Network chapter.
• Added Using Tracer TU with Air-Fi Wireless Sensors and Hardwired BACnet section in Using the
Tracer® TU Service Tool with a Wireless Network chapter.
Introduction

BAS-SVX40K-EN 5
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Air-Fi® Wireless Communications Interface (WCI). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Air-Fi® Wireless Communications Sensor (WCS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Compatibility with Previous Generation Wireless Zone Products. . . . . . . . . . . . . . . . . . . . . 9
Wired Zone Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Devices Supported by Air-Fi® Wireless Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Maximum Number of Air-Fi® Devices and Networks Allowed. . . . . . . . . . . . . . . . . . . . . . . 10
Automatic Network Formation and Sensor Association . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Network Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Air-Fi® Device Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Firmware Requirements for Devices on an Air-Fi® Network. . . . . . . . . . . . . . . . . . . . . . . . 12
WCI Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
WCS-SB/SD Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
WCS-SO/SCO2 Dimensions (WCS-SB/R Similar) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Agency Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Pre-Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Location Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
WCI Positioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Line of Sight Placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
WCI Maximum Wire Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
WCI Installation Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
WCS Installation Locations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
WCS Height Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
WCS Mounting Surfaces. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Design Consideration for BCI-I, BCI-R, BCI2-I and BCI2-R . . . . . . . . . . . . . . . . . . . . . . . . 24
WCI Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
WCI Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
WCI Mounting and Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Controller Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Repeater Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Changing a WCI from Device Association to Repeater . . . . . . . . . . . . . . . . . . . . . . . . 34
WCS-SB/SD Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Powering the WCS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
WCS Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
WCS: Network Joining and Controller Association . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Table of Contents

6BAS-SVX40K-EN
2% Relative Humidity Sensor Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
WCS : Points and Referencers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Mounting the Sensor Back Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
WCS–SO/SCO2and –SB/R Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Powering the WCS-SO, -SCO2, -SB/R Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Addressing the WCS-SO, -SCO2, -SB/R Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
WCS-SO, -SCO2, -SB/R Network Joining and Controller Association . . . . . . . . . . . . . . . 44
WCS : Points and Referencers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Mounting the WCS-SO, -SCO2, -SB/R Sensor Back Plate . . . . . . . . . . . . . . . . . . . . . . . . 44
Wiring an External Sensor Probe to WCS-SB/R . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
WCS-SO, -SCO2, -SB/R Display Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
RH Sensor Module Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Replacing the Sensor Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
WCS-SO, -SCO2, -SB/R Error Codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Testing WCS-to-WCI Signal Strength and Battery Life. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
WCS-SB/SD Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Configuration Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Example of a Configured WCS-SD Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Optional Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Displaying Setpoint or Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Locking or Unlocking Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Star (*)/Double Star (**) Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Replacing the Sensor Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Viewing Unit Controller Operating Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Establishing an Air-Fi® Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
WCI LEDs and Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Three Ways to Establish an Air-Fi® Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Establishing the Network After Tracer SC+ Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Establishing the Network Prior to Tracer SC+ Installation or Without Tracer SC+
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Task 1: Activate Communication Among Existing WCIs . . . . . . . . . . . . . . . . . . . . . . . 63
Task 2: Installing a Tracer SC+ After Network Formation . . . . . . . . . . . . . . . . . . . . . . . 64
Installing Air-Fi Wireless Sensors with BACnet MS/TP or BACnet/IP . . . . . . . . . . . . . . . . 64
Using Tracer TU with Air-Fi® Wireless Sensors and BACnet MS/TP or BACnet/
IP.......................................................................... 66
Modifying an Air-Fi® Network. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Adding WCIs to an Existing Network Using Tracer TU. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Table of Contents

BAS-SVX40K-EN 7
Adding WCIs to an Existing Network Using a WCI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Adding Coordinators to a Tracer SC+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Removing a WCI from a Network. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Replacing a WCI on a Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Moving a WCI From One Device to Another . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Changing the ZigBee® Channel of the Wireless Network . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Closing the Network. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Disbanding a Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Troubleshooting and Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
WCI Does Not Join Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Tracer SC+ Does Not Communicate with WCI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Sensor Does Not Communicate with WCI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
No Communication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Slow Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
ZigBee® and Wi-Fi Channel Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Replacing a Failed WCI. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Task 1: Remove the failed WCI. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Task 2: Install the new WCI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Testing WCS Signal Quality and Battery Life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Checking Signal Quality on a Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Battery Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Manual Association Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Disassociation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Replacing a Failed WCS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Sensor Output Power Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Cleaning the Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Using the Tracer® TU Service Tool with a Wireless Network. . . . . . . . . . . . . . . . . . . . . . 78
Requirements for Joining a Wireless Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Joining Tracer TU to a Wireless Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Managing a Wireless Network and Devices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Connecting to a Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
The Wireless Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Wireless Sensor Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Default Sensor Values for Trane® Standard Programs . . . . . . . . . . . . . . . . . . . . . . . . 89
Referencing Individual Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
BCI/BCI2 Point and Reference Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
WCS-SB/R Refrigerator Temperature Sensor Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . 93
WCS-SB/R Refrigerator Sensor plus Two Averaged Space Temp Sensors
Setup Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Setting Up Wireless Battery Monitoring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Table of Contents

8BAS-SVX40K-EN
How to Connect Air-Fi® Wireless Sensors Directly to SC+ . . . . . . . . . . . . . . . . . . . . . . . . 100
How to Set-up Air-Fi Network on Tracer Synchrony . . . . . . . . . . . . . . . . . . . . . . . . . . 100
How to Configure Air-Fi Sensors Connected Directly to Tracer SC+ without a
Unit Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Opening Air-Fi Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Configuring WCS Sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Creating Points to the Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Communication History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
User Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Channel Quality Scan Tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Channel Quality Scan Tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Changing a Zigbee channel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Multiple Uses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Scanning and Exporting (saving) scan data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Hover Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Table of Contents

BAS-SVX40K-EN 9
Overview
This section provides an overview of Trane Air-Fi® wireless systems and the two Trane Air-Fi® wireless
devices.
Air-Fi® Wireless Communications Interface (WCI)
The Air-Fi® Wireless Communications Interface (WCI) enables wireless communications between
system controls, unit controls, and wireless sensors for Trane® control products that use the BACnet®
protocol. The WCI replaces the need for communications wire in all system applications.
The WCI is available in three configurations:
• The universal model is the most common. It installs the same as a wired zone sensor in indoor
applications.
• The outdoor model is housed in an enclosure suitable for outdoor environments. It is usually used
on equipment above the roof deck.
• The flush mount model is used on fan coils, blower coils, and unit ventilators.
Air-Fi® Wireless Communications Sensor (WCS)
The Air-Fi® Wireless Communications Sensor (WCS) is compatible with any Trane controller that uses
a WCI. The WCS provides the same functions as many currently available Trane wired sensors. No
further software or hardware is necessary for site evaluation, installation, or maintenance. Space
temperature is standard on all models. (A service tool cannot be connected to a Trane wireless sensor.)
Six WCS models are available:
• WCS-SB: Base model, has no exposed display or user interface
• WCS-SD: Digital display
• WCS-SCO2: CO2with occupancy
• WCS-SO: Occupancy
• WCS-SB/R: Refrigeration and freezer monitoring sensor
• WCS-SH: 2% relative humidity sensor module, can be field installed inside either the WCS-SD,
WCS-SB, WCS-SO, WCS-SCO2, WCS-SB/R
In most applications, one WCS sensor will be used per WCI acting as a router. However, up to 6 WCS
sensors can be associated to a single equipment controller or BCI/BCI2.
See “Wireless Sensor Setup,” p. 88 for details on how to set this up.
Compatibility with Previous Generation Wireless Zone Products
Our previous line of wireless zone sensors (WZS, WTS, and WDS) are not compatible with the Air-Fi
Wireless Communications Interface (WCI).
The new Air-Fi Wireless Communications Sensor (WCS) are compatible with old WCIs that have
updated firmware.
WCS-SO and WCS-SCO2require minimum unit controller firmware as described in “Firmware
Requirements for Devices on an Air-Fi® Network,” p. 12.
Wired Zone Sensors
Wired zone sensors can be used with Air-Fi wireless systems.
Devices Supported by Air-Fi® Wireless Systems
• Tracer® SC/SC+ system controller
• Tracer® UC210 programmable controller
• Tracer® UC400 programmable controller

10 BAS-SVX40K-EN
• Tracer® UC600 programmable controller
• BCI-I/BCI2-I: BACnet Communications Interface for IntelliPak™ systems
Notes:
– While BCI-I/BCI2-I is compatible with WCS-SB and WCS-SD sensors, it does not
support WCS-SO or WCS-SCO2.
– BCI/BCI2 does not support WCS-SB/R refrigeration and freezer monitoring sensors.
• BCI-R/BCI2-R: BACnet Communications Interface for ReliaTel™ systems
Note: It is not possible to create any points or references on BCI-I/BCI2-I/BCI-R/BCI2-R. See “BCI/
BCI2 Point and Reference Limitations,” p. 91 for more information.
• Tracer® TU service tool
• Symbio™ 210/210e programmable controller
• Symbio™ 400/500 programmable controller
• Symbio™ 700 controller
• Symbio™ 800 programmable controller
Maximum Number of Air-Fi® Devices and Networks Allowed
There are limits to the number of devices in an Air-Fi® network. Following are some definitions and a
table describing the limit of the number of devices in an Air-Fi wireless network. The best practice is to
design the network well below these limits to provide room for future expansion as well as getting the
most efficient wireless performance.
Notes:
• The number of WCIs that can be installed at a site is determined by the applicable Tracer SC
license, which specifies the total number of controllers.
• For instructions on installing a WCI on a Tracer SC, see “WCI Installation,” p. 25.
• Always consider leaving room on the network for additional WCIs or WCSs for future
expansion.
• Generally, about 20 WCIs on a network is the optimum number to achieve an adequately
dense mesh network for multiple communication paths as well as the fastest communication
speed with minimum hops.
Terms:
•Router— A WCI wired to a UC controller
•Repeater— A WCI that is stand alone. Its only job is to pass on information received from other WCI
routers and sensors near it. It is set up with the same Group and Network number as the rest of the
network, but it is not wired to a UC controller.
•Coordinator— A WCI coordinator establishes the Zigbee®1mesh network with surrounding WCI
routers. Most of the time this will be the WCI that is wired to the Tracer SC+. However, there are
instances where the network is formed without the Tracer SC+. In this case the Coordinator is wired
to a UC controller.
•Devices— WCI Routers, WCI Coordinators, WCI Repeaters, and WCS Sensors
•WCS— Wireless Communicating Sensor (WCS-SB, WCS-SD, WCS-SO, WCS-SB/R, and WCS-
SCO2)
•SC—Can be either Tracer SC or SC+
Overview
1. ZigBee is a registered trademark of the ZigBee Alliance.

BAS-SVX40K-EN 11
Table 1. Maximum Air-Fi networks and devices allowed
Max Equipment Usage Level Notes
6 WCS Per unit controller A total of six (6) Air-Fi sensors can be associated to a unit
controller in any combination (WCS-SB, WCS-SD, WCS-
SO, WCS-SB/R, and WCS-SCO2)
6 WCS Per Air-Fi wireless network when associated
directly to the Tracer SC+.
A total of six (6) Air-Fi wireless sensors can be directly
associated to the SC+ in any combination (WCS-SB,
WCS-SD, WCS-SO, WCS-SB/R, and WCS-SCO2).
Sensors associated directly to the SC+ counts against the
Devices maximum of 61.
8 Networks Per Tracer SC App and/or Base
8 Coordinator WCI Per Tracer SC 1 Tracer SC coordinator WCI per network
30 UC/Symbio™ controllers Per network
31 WCIs Per network 1 Tracer SC coordinator WCI + up to 30 UC router WCIs +
WCI Repeater(s)
48 WCS Per Tracer SC+ Each SC+ Air-Fi Wireless network can have up to 6
sensors directly associated. An SC+ would have to have
8 wireless networks in order to have 48 sensors
associated (6 sensors per network x 8 networks = 48).
Sensors associated directly to the SC+ count against the
Devices maximum of 61.
61 Devices Per network(a) (b) 1 Tracer SC coordinator WCI + up to 30 UC router WCIs +
WCSs + WCI Repeater(s)
120 UC/Symbio™ controllers Per Tracer SC(c) Applies to both App and Base SC(s)
240 UC/Symbio™ controllers Per App SC plus Base SC(s) See note (d) below for examples
(a) A WCI on a single UC/Symbio™ controller may have up to 6 WCS sensors associated. Count each WCS sensor as part of the device total.
(b) Example1: 30 UCs each with 1 WCS sensor associated (30 UCs +30 sensors + 1 coordinator = 61 devices). Example 2: 20 UCs each with 2 WCS sensors associated (20
UCs + 40 WCS + 1 coordinator = 61 devices). Example 3: 8 UCs each with 6 WCS sensors associated (8 UCs + 48 WCS + 1 coordinator = 57 devices.
(c) This would require a minimum of four (4) networks with 30 unit controllers on each network.
(d) Example 1: 120 UC controllers on App SC + 120 UC controllers on Base SC. Example 2: 120 UC controllers on App SC + 60 UC controllers on Base SC1 + 60 UC
Controllers on Base SC2. Example 3: 60 UC controllers on App SC + 60 UC controllers on Base SC1 + 60 UC controllers on Base SC2 + 60 UC controllers on Base SC3.
Example 4: 0 UC controllers on App SC + 120 UC controllers on Base SC1 + 120 UC controllers on Base SC2.
Automatic Network Formation and Sensor Association
A WCI that is connected to a Tracer SC+ is auto-assigned as the network coordinator. The coordinator
WCI allows all WCIs and WCSs having matching addresses to automatically join the network. (For more
details about the process of network establishment, see “Establishing an Air-Fi® Network,” p. 60.
If no Tracer SC+ is present, a centrally located WCI connected to a programmable or unit controller or a
BCI/BCI2 must be designated as the coordinator. You can designate a WCI to be a coordinator either
manually on the WCI or by using Tracer TU. See “Establishing the Network Prior to Tracer SC+
Installation or Without Tracer SC+ Installation ,” p. 63. This scenario includes the application of Air-Fi
Wireless sensors with BACnet MS/TP and BACnet/IP (hardwired or Wi-Fi).
After the network is formed, WCSs automatically associate with their designated controllers.
Notes:
• When a WCS is first powered up, it joins the network using any WCI within range including
the coordinator, and repeaters. The WCI becomes the parent for that WCS. As long as
there is adequate signal level the WCS will stay with this parent WCI indefinitely. The parent
WCI passes any WCS messages over the network to the associated unit controller.
• The network must be open for a WCS to join the network, but does not need to be open for
the WCS to be manually assigned to a controller.
Network Security
Air-Fi® Wireless is secured using Advanced Encryption Standard AES-128 (FIPS Pub 197) and HMAC
(FIPS Pub 198). The Trane WCI operating as a Trust Center will create a randomly generated 128-bit
Overview

12 BAS-SVX40K-EN
network security key for each ZigBee®2network. This network security key is required to decrypt
communications from the network. In order to join the secured Air-Fi network, the network must first be
"opened" or set to allow devices to join. A device requesting to join the network is given a transport key
which must be decrypted by the joining device before it can communicate on the Air-Fi network. The Air-
Fi network will automatically close or prevent new devices from joining the network one hour after it was
opened.
Air-Fi® Device Part Numbers
The following table lists the Air-Fi® devices with their part numbers and indicates application conditions
and availability.
Table 2. Device application, availability, and part numbers
Air-Fi® device Application Availability Part number BAYSENS Global part
Wireless communications interface (WCI)
Indoor
Field installed or
service
X13790901030 BAYWCII189A MOD02969
Outdoor X13790941030 BAYWCII187A MOD02971
Indoor—BAA(a) X13790963030 N/A MOD03069
Outdoor—BAA X13790964030 N/A MOD03070
Indoor flush Service part only X13790902030 N/A MOD02970
Indoor Factory only X13790903030 BAYWCII188A N/A
Indoor flush X13790904030 N/A N/A
Wireless communications sensor—Digital
display (WCS-SD)
Universal(b)
Field, factory, or
service
X13790955010 N/A SEN02362
FC BC UV(c) and
RTU WSHP
offerings are factory
or service only (not
field applied)
X13790955040 N/A SEN02394
RTU WSHP(d) X13790955050 BAYSENS202A SEN02263
Universal—BAA(a) X13790968010 BAYSENS212A SEN02265
Wireless communications sensor—Base
model (WCS-SB)
Universal X13790956010 BAYSENS203A SEN02264
Universal—BAA(a) X13790969010 BAYSENS213A SEN02266
Wireless communications sensor accessory—2% relative humidity
sensor module (WCS-SH) X13790973030 BAYSENS230A SEN02638
Wireless communications sensor— with
Occupancy sensor (WCS-SO) Universal—BAA(a) X13790986001 BAYSENS154A SEN2502
Wireless communications sensor— with CO2
and Occupancy sensors (WCS-SO/SCO2)Universal—BAA(a) X13790987001 BAYCO2K200A SEN2503
Wireless communications sensor - Base
model with external Refrigeration input
(WCS-SB/R)
Universal—BAA(a) X13791004001 N/A SEN02773
(a) BAA (Buy American Act)
(b) 1 setpoint, timed override, */**
(c) 1 setpoint, all Fan options, */**
(d) 2 setpoints, 2 Fan options (On-Auto), all System options (Off, Auto, Cool, Heat, Emergancy Heat)
Firmware Requirements for Devices on an Air-Fi® Network
The following table lists the minimum firmware levels required to allow devices to participate on an Air-Fi
network:
Overview
2. ZigBee is a registered trademark of the ZigBee Alliance.

BAS-SVX40K-EN 13
Table 3. Minimum firmware level required for devices on an Air-Fi network
Device One or no WCSs
Multiple WCS-SB, or -SD and/
or an RH sensor module
(WCS-SH)
WCS-SO/SCO2WCS-SB/R
Tracer SC V3.6.xxx N/A N/A N/A
UC210 All versions V2.00.xxx.mod V3.0 V3.0
UC400 V6.00.xxx.mod V8.00.xxx.mod V9.0 V9.0
UC600 V4.00.xxx.mod V5.00.xxx.mod V6.0 V6.0
BCI-I V25.00.xxx.mod V28.00.xxx.mod Not supported(a) Not supported
BCI-R V5.02.xxx.mod V6.00.xxx.mod V7.0 Not supported
RTRM V12 or higher (requires physical
board replacement) N/A N/A N/A
Tracer TU V8.2 V8.6 V9.3 V9.3
TU Adapter V1.00.xxx.mod N/A N/A N/A
WCI V1.00.000.mod V2.00.000.mod V2.01.004.mod V2.01.004.mod
Tracer SC+ V5.1 V5.1 V5.1 V5.1
BCI2-I All versions All versions Not supported(a) Not supported
BCI2-R All versions All versions All versions Not supported
BCI2-C N/A N/A N/A N/A
Symbio™ 210/210e All versions All versions All versions All versions
Symbio™ 400/500 All versions All versions All versions All versions
Symbio™ 700 All versions All versions All versions All versions
Symbio™ 800 All versions All versions All versions All versions
(a) The WCS-SO/SCO2sensor can be installed in another controller in the building and referenced by the BCI-I/BCI2–I.
Overview

14 BAS-SVX40K-EN
WCI Dimensions
The following figure shows front, side, and bottom views of a WCI with dimensions.
Figure 1. Three views of WCI with dimensions
Overview

BAS-SVX40K-EN 15
WCS-SB/SD Dimensions
The dimensions are the same for all WCS-SB/SD models. The following illustration shows three views
of a SD (display model) which contains an LCD display and a keypad.
Figure 2. Three views of a WCS with dimensions
Overview

16 BAS-SVX40K-EN
WCS-SO/SCO2Dimensions (WCS-SB/R Similar)
The WCS-SO/SCO2and WCS-SB/R dimensions are almost the same as the other WCS models, except
for total depth.
Figure 3. Three views of an WCS-SO/SCO2sensor with dimensions
Overview

BAS-SVX40K-EN 17
Specifications
Table 4. WCI and WCS specifications
General Specifications
Operating Temperature WCI -40 to 158 degrees ºF (-40 to 70 degrees ºC)
WCS-SB, SD, SO, SCO2and SB/R internal sensor 32 to 122 ºF (0 to 50 degrees ºC)
WCS-SB/R remote sensor -58 to 122 degrees ºF (-50 to 50 degrees ºC)
Storage Temperature -40 to 185º F (-40 to 85° C)
Storage and Operating Humidity Range 5% to 95% relative humidity (RH), non-condensing
Housing Material Polycarbonate/ABS (suitable for plenum mounting), UV protected, UL 94: 5 VA flammability rating
Range(a) Open range: 2,500 ft (762 m) with packet error rate of 2%. Indoor: Typical range is 200 ft (61 m); actual
range is dependent on the environment. See BAS-SVX55* for more detail.
Output Power 100 mW
Radio Frequency 2.4 GHz (IEEE Std 802.15.4-2003 compliant) (2405–2480 MHz, 5 MHz spacing)
Radio Channels 16
FCC ID# W7Z-ZICM357SP2
IC ID# 8254A-ZICM357SP2-1
Wireless Communications Interface (WCI) Specifications
Voltage 24 Vac/Vdc nominal ±10%. If using 24 Vdc, polarity must be maintained.
Power Consumption <1.0 VA
Indoor Mounting Fits a standard 2 in. by 4 in. junction box (vertical mount only). Mounting holes are spaced 3.2 in. (83 mm)
apart on vertical center line. Includes mounting screws for junction box or wall anchors for sheet-rock
walls. Overall dimensions: 2.9 in. (74 mm) by 4.7 in. (119 mm).
Outdoor Mounting Position enclosure in desired flat mounting location and mount using four (4) #8 sheet metal screws with
the conduit connection pointing down. If not mounted to the HVAC equipment exterior wall, the conduit
connection on the bottom of the enclosure is also available. Please note that the supplied plug must be
installed into the unused conduit connection.
Overall dimensions: 3.9 in. (98 mm) by 6.4 in. (163 mm) by 1.7 in. (42 mm).
Wireless Protocol ANSI/ASHRAE Standard 135-2016 (BACnet® / Zigbee®)
BACnet® is a registered trademark of American Society of Heating, Refrigerating and Air-Conditioning
Engineers (ASHRAE)
ZigBee® is a registered trademark of the ZigBee Alliance
Wireless Communications Sensor (WCS) General Specifications
Accuracy 0.5ºF for a range of 55 to 85°F (12.8 to 29.4°C)
Resolution +0.125ºF over a range of 60ºF to 80ºF (15.56°C to 26.67°C)/±0.25°F outside this range
Sampling Rate (Temperature) 30 seconds
Setpoint Functional Range 45ºF to 95ºF (7.22ºC to 35ºC)
Transmit Trigger 0.2ºF change or once every 15 minutes
Sensor Battery (Energizer® L91) Two (2) AA lithium 1.5 V batteries, 2800 mAh with an expected life of 15 years under typical operating
conditions for non-CO2WCS. For WCS-SCO2, expected battery life is 15 years for commercial buildings
occupied 10 hours a day, five days per week. For buildings occupied 24 hours a day/seven days a week,
the expected battery life is 10 years.
Address Range 001 to 999 for UC controllers, 001 to 996 for Symbio™ controllers.
Maximum Time Between Transmissions 15 minutes
Minimum Time Between Transmissions 10 seconds. Time between transmissions can be shorter during user interaction.
Mounting Fits a standard 2 in. by 4 in. junction box (vertical mount only). Mounting holes are spaced 3.2 in. (83 mm)
apart on vertical
center line. Includes mounting screws for junction box and wall anchors for sheet-rock walls.
Overall dimensions: 2.9 in. (74 mm) by 4.7 in. (119 mm)
Overview

18 BAS-SVX40K-EN
Table 4. WCI and WCS specifications (continued)
WCS-SO Sensor Specifications
Coverage Patterns (See the figure “WCS-SO sensor coverage patterns,” which follows this table.)
Sampling Rate Continuous
Occupied Timeout Delay (delay before going
unoccupied) Average 5–10 minutes after last motion is detected (Not adjustable)
Transmit Trigger After 10 minutes without motion or once every 15 minutes.
Maximum Detection Range 32 feet (10 m)
Life Expectancy 15 years
Operating Temperature From 32°F to 122°F (0°C to 50°C)
Occupancy Sensor Type PIR Passive infrared
Storage Temperature From —40°F to 158°F (-40°C to 70°C )
Humidity Range 20% to 60% RH
Warm-up Time ≤ 1 min @ full spec ≤ 15 min
Housing Material Polycarbonate/ABS blend (wall)
WCS-SCO2Sensor General Specifications
CO2Range 0 — 10,000 ppm CO2
Sampling Rate Every 5 minutes when sensor sees motion Every 15 minutes when sensor does not see motion
Accuracy at 25°C ±40 ppm CO2+ 3% of reading (includes repeatability)
Transmit Trigger 50 ppm change or once every 15 minutes
Pressure Dependence of Output Built-in pressure sensor eliminates inaccuracy due to altitude
Recommended Calibration Interval None (auto-calibrated)
Response Resolution 50 ppm change or 15 minute heartbeat
Life Expectancy 15 years
Operating Temperature From 32°F to 122°F (0°C to 50°C)
Storage Temperature From —40°F to 158°F (-40°C to 70°C )
Humidity Range 20% to 60% RH
Warm-up Time ≤ 1 min @ full spec ≤ 15 min
Housing Material Polycarbonate/ABS blend (wall)
CO2Sensor Type NDIR Non-dispersive infrared
WCS-SB/R Sensor Specification
Accuracy (internal thermistor)(b) 0.5°F for a range of 55 to 85°F (12.8 to 29.4°C)
Resolution (internal thermistor)(c) +0.125°F over a range of 60°F to 80°F (15.56°C to 26.67°C)/+- 0.25°F outside this range
Input Resolution (external thermistor) See Table 5, p. 19
Sampling Rate 30 seconds
Life Expectancy 15 years
Operating Temperature 32°F to 122°F (0°C to 50°C) Internal thermistor. -25°F to 122°F (-32°C to 50°C) External thermistor
Overview

BAS-SVX40K-EN 19
Table 4. WCI and WCS specifications (continued)
2% Relative Humidity (RH) Sensor Module
Accuracy ±1.8% (typical)
Hysteresis ±1% (typical)
Sampling Rate 30 seconds
Response Time 8 seconds
Long-term Drift <0.5%RH/year
Transmit Trigger Change of 1% or every 15 minutes
Life Expectancy 15 years
(a) Range values are estimated transmission distances for satisfactory operation. Actual distance is job specific and must be determined during site evaluation. Placement of the
WCI is critical to proper system operation. In most general office space installations, distance is not the limiting factor for proper signal quality. Signal quality is more greatly
affected by walls, barriers, and general clutter. Note that sheetrock walls and ceiling tiles offer little restriction to the propagation of the radio signal throughout the building as
opposed to concrete or metal barriers. More details information, including wiring schematics, are available at http://www.trane.com.
(b) Accuracy and Resolution for a remote thermistor will depend on the thermistor that is used.
(c) Accuracy and Resolution for a remote thermistor will depend on the thermistor that is used.
Table 5. WCS-SB/R remote sensor input resolution
Temperature Input Range Resolution(a)
-10°F to 80°F ≤ 0.2°F
-11°F to -30°F and 81°F to 100°F ≤ 0.3°F
-31°F to -40°F and 101°F to 122°F ≤ 0.4°F
-41°F to -58°F ≥ 0.4°F
(a) Resolution does not include field supplied 10K Type 2 thermistor tolerance.
Figure 4. WCS-SO sensor coverage patterns
Range = 10m (32.8 feet)
Overview

20 BAS-SVX40K-EN
Table 6. Wireless sensing specifications
Sensor Type Sampling Rate Change of Value Trigger/Delay Heartbeat
Temperature 30 seconds 0.2°F
15 minutes
Relative Humidity 30 seconds 1% RH
CO2Occupied — 5 minutes
Unoccupied — 15 minutes
50 ppm
Occupancy
Continuous Unoccupied to Occupied:
• Transmits change of state within
30 seconds.
Occupied to Unoccupied:
• 5–10 minutes delay (not
adjustable).
• Sends unoccupied message
after 5–10 minutes without
motion.
Overview