Trane Symbio 210 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.
October 2022 BAS-SVX091A-EN
Installation, Operation, and Maintenance
Symbio™ 500 Programmable
BACnet® Controller
for Variable-Air-Volume (VAV) Units

©2022 Trane BAS-SVX091A-EN
Introduction
The Symbio 500 controller is a programmable, general-purpose BACnet®, microprocessor based, direct
digital controller (DDC). This controller can be installed as a factory or field device. When this controller
is factory installed on Trane™ variable-air-volume (VAV) terminal units, the factory downloads the unit
with the appropriate VAV programs and configuration settings for the unit. These can include sales-
order-specified airflow setpoints.
Trane VAV units are made with either pneumatic or microprocessor controls (DDC/VAV). This manual
considers only terminal units with BACnet Symbio 500 controller DDC/VAV controls. Factory installed
DDC/VAV controls are available with all single duct terminal units, dual duct terminal units, parallel fan-
powered, and series fan-powered units.
The Symbio 500 controller is the standard factory-installed option on Dual Duct VAV boxes, as this
application requires additional inputs for pressure sensing compared to single duct. The Symbio 500 is
offered as an option for all VAV configurations. Although the information in this document applies to all
VAV types, Symbio 210/210e is the standard factory-installed control option.
Table 1. Symbio controller descriptions
Controller Description
Symbio 210 Single Duct, BACnet over wired MS/TP, or BACnet/Zigbee
using Trane Air-Fi®
Symbio 210e Single Duct, BACnet/IP over wired Ethernet, or BACnet/Zigbee
using Trane Air-Fi®
Symbio 500 Dual Duct, BACnet over wired MS/TP, BACnet/IP over wired
Ethernet, or wirelessly using optional module
See Symbio 210 Programmable Variable Air Volume (VAV) Box Controller (BAS -SVX084) for more
information.
Note: LonTalk communications are not supported on Symbio 201/210e/400–B/500.
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.

BAS-SVX091A-EN 3
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.
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
Introduction

4BAS-SVX091A-EN
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.
Introduction

BAS-SVX091A-EN 5
BACnet® Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
BACnet Testing Laboratory (BTL) Certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Specifications and Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Shipping and Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Symbio 500 Controller Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Controller Comparisons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Device Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Expansion Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Device Inputs/Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Analog Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Universal Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Pressure Inputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Binary Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Binary Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Analog Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Wiring Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Controller Pre-power Checkout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Transformer Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Controller Power Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
BACnet® MS/TP Communication Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
BACnet/IP Over Ethernet Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Air-Fi Wireless BACnet® Communications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
BACnet/IP Over Wired Ethernet Communications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Air-Fi Wireless BACnet® Communications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Wiring Guidelines for Wired BACnet MS/TP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Wiring Best Practices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Setting Up the Controller on a BACnet Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Setting the Address. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
BACnet Networks Without a Tracer SC+ System Controller . . . . . . . . . . . . . . . . . . . . 23
BACnet Networks With a Tracer SC+ System Controller . . . . . . . . . . . . . . . . . . . . . . . 24
Wiring Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Connecting the Wires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Power on Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Application Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Zone Sensor Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Duct Temperature Sensor Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Binary Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Table of Contents

6BAS-SVX091A-EN
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
LEDs....................................................................... 29
LED Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
LED Descriptions, Activities, and Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Marquee LED Status and Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Controller Points and Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Status Utility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Unit Summary Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Analog, Binary, and Multi-state Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Controller Status Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Equipment Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Setpoints Screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Setup Parameters Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Commissioning Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Configuration Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Reheat Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Sensor Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Equipment Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Setpoints Screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Setup Parameters Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Commissioning Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Configuration Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Reheat Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Sensor Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Calibration, Operation Modes, and Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Calibration.................................................................. 45
Occupancy Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Occupied Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Unoccupied Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Occupied Standby Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Occupied Bypass Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Occupancy Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Occupied Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Unoccupied Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Occupied Standby Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Occupied Bypass Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Space Temperature Control (STC) for Single Duct and Fan-Powered Units . . . . . . . . . . 47
Single Duct Units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Fan-Powered Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Ventilation Flow Control (VFC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Flow Tracking (FTC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
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BAS-SVX091A-EN 7
Troubleshooting Procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Controller Failure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Controller Communication Loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Wired Zone Sensor Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Wired Zone Sensor Setpoint Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Typical Trane Factory Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Additional Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Table of Contents

8BAS-SVX091A-EN
BACnet® Protocol
The Building Automation and Control Network (BACnet®) protocol is ANSI/ASHRAE Standard 135. This
standard allows building automation systems or components from different manufacturers to share
information and control functions. BACnet® provides building owners the capability to connect various
types of building control systems or subsystems together for many uses. Multiple vendors can use this
protocol to share information for monitoring and supervisory control between systems and devices in a
multi-vendor interconnected system. The BACnet® protocol defines standard objects (data points)
called BACnet® objects. Each object has a defined list of properties that provide context information
about that object. In addition, BACnet® defines a number of application services that are used to
interact with objects in a BACnet® device.
BACnet Testing Laboratory (BTL) Certification
The Symbio 400–B/500 is BTL certified as a B-BC profile device. A complete list of Trane certified
devices is available at www.bacnetinternational.org.

BAS-SVX091A-EN 9
Specifications and Dimensions
Storage
Temperature -67°F to 203°F (-55°C to 95°C)
Relative humidity Between 5% to 95% (non condensing)
Operating
Temperature -40°F to 158°F (-40°C to 70°C)
Humidity Between 5% to 95% (nonconducting)
Power 20.4–27.6 Vac (24 Vac, ±15% nominal) 50–60 Hz 24 VA
Mounting weight of controller Mounting surface must support 0.80 lb. (0.364 kg)
Environmental rating (enclosure) NEMA 1
Housing Material:
• Polycarbonate/ABS Blend
• UV protected
• U.L. 94–5VA flammability rating
Mounting
Mounts on EN 50 022 — 35 x 15 DIN rail that is included in the VAV unit control box when the
Symbio 500 is factory mounted.
Agency Compliance
• UL60730-1 PAZX (Open Energy Management Equipment
• UL94-5V Flammability
• CE Marked. The European Union (EU) Declaration of Conformity is available from your local Trane® office.
• UKCA Marked
• FCC Part 15, Subpart B, Class B Limit
• VCCI-CISPR 32:2016: Class B Limit
• AS/NZS CISPR 32:2015: Class B Limit
• CAN ICES-003(B)/NMB-003(B)
Figure 1. Symbio 500 dimension
5.65 in. (143.5 mm) [8 units*] 2.17 in.
(55 mm)
1.73 in.
(44 mm)
4.00 in.
(101.6 mm)
*DIN Standard 43 880, Built-in Equipment for Electrical Installation. Overall Dimensions and Related
Mounting Dimensions.
For mounting and clearance recommendations, refer to Symbio 500 Programmable Controller
Installation, Operation, and Maintenance Manual (BAS-SVX090*-EN).

10 BAS-SVX091A-EN
Shipping and Storage
Each VAV order ships with service literature. When unpacking, ensure that the literature is not lost or
discarded with the packing material.
Important: Visually inspect the individual components for obvious defects or damage. All components
are thoroughly inspected before leaving the factory. Any claims for damage incurred during
shipment must be filed with the carrier.
If storing any component of the VAV system and/or field installed accessories for a period of time prior to
installation, those components must be protected from the elements. Refer to “Specifications and
Dimensions,” p. 9 for storage location temperature and the relative humidity ranges.
Important: The warranty will not cover damage to the VAV or controls due to negligence during storage.
A controlled indoor environment must be used for storage.

BAS-SVX091A-EN 11
Symbio 500 Controller Features
Table 2. Symbio 500 features
Feature Description
Controller Interface Flexibility:
The Symbio 500 controller allows VAV units to communicate on a BACnet MS/TP, BACnet/Zigbee, or BACnet/IP link and is
compatible with the latest generation of Trane controls. This controller can operate in standalone mode, peer-to-peer with one or
more other units, or when connected to a Tracer SC+ or a 3rd party building automation system that supports BACnet.
Flow Tracking:
The Symbio 500 controller is designed with the ability to be applied in flow tracking applications. This allows the controller to be
paired with one of its peers to mirror the flow of the lead unit, with or without an offset (positive or negative static pressure as
desired).
Ventilation Flow Control with
Tempering:
The Symbio 500 controller is designed with the ability to be applied in ventilation flow control applications. These applications
combine a fresh air unit with ventilation boxes to provide fresh (tempered) air to a zone. This feature also includes a freeze
protection sequence to protect the hot water reheat coil from low supply air temperatures.
Auto-commissioning
Sequence:
The Symbio 500 controller is designed with an auto-commissioning sequence. With a discharge air temperature sensor, this
feature exercises the air valve, fan, and heat in the box and records the temperature before/after the action. This allows the
installer to easily verify the operation of the unit and commission by exception. An auto-commissioning report can be generated
with Tracer TU service
Automatic Calibration:
The Symbio 500 controller is designed to automatically calibrate the flow transducer each time the unit transitions to
unoccupied. This eliminates the need to initiate/schedule calibration for most installations. The exception is 24/7 sites, in which
case, Tracer SC+ can be used to initiate/schedule calibration.
Temporary Heat
(Construction Mode):
Upon reset (and power-up), if the controller does not detect a valid space temperature, the controller will provide temporary heat
by driving the air valve to the heating maximum position.
Note: The unit will provide heat only if the air handler unit provides hot air.
Local Versus Remote Reheat
Flexibility:
The controller can be configured to have local and/or remote heat. In addition, provided configuration flexibility allows the
installer to select priority for either local or remote heat has.
Spare Inputs/Outputs:
The Symbio 500 controller has spare I/Os that are not used by the VAV applications. These spare I/Os can be programmed
using the Tracer Graphical Programming editor (by means of the Tracer TU service tool) to measure and/or control ancillary
devices such exhaust fans, second air valve for dual duct VAV, or sensing relative humidity.
Removable Terminal
Connectors:
The Symbio 500 controller connectors are 2-part connectors with 5.08 millimeter pin separation. The headers are attached on
the Symbio 500 controller itself. The other portion of the connector is either a screw terminal (for field wiring) or a terminal
housing (for factory wiring). Spare screw terminals come factory installed for field mounted wired zone sensors and common
accessories.
Wireless Zone Sensors:
The Symbio 500 controller is compatible with the latest wireless zone sensors available from Trane. Wireless zone sensors
provide flexibility of sensor location and re-location as well as reducing the cost of installation. Wireless zone sensor receivers
are available as a factory or field installed option.
Firmware (Application Code)
Download:
The Symbio 500 controller has been designed with flash memory. This allows the option of upgrading the application code in the
field without changing out the controller.
Drive Min/Max from Zone
Sensor:
When applied with a Trane zone sensor module, that includes a thumbwheel setpoint or a LCD display, the Symbio 500
controller can easily be overridden to minimum and maximum flow. By simply turning the thumbwheel to *or increasing the
setpoint to maximum on display sensors (end of range in one direction), the controller drives the air valve to the minimum flow
setpoint. Likewise, turning the thumbwheel to the ** or decreasing the setpoint to minimum on display sensors (end of range in
the other direction) the controller drives the air valve to the maximum flow setpoint. This feature can be disabled by putting
Airflow Override Local, Multistate Input 2, and Out of Service using Tracer TU.
Auto-commissioning Report
(Tracer SC+ and Tracer TU):
Tracer SC+ and Tracer TU both include auto-commissioning reports that extracts and formats the commissioning data for each
VAV controller. This commissioning report is valuable both for the installer and for the owner. The feature enables the system to
be commissioned by exception, providing a benefit for the installer. The feature also can be used as validation that provides
value to the owner.
Dual pressure inputs Necessary for Dual Duct applications
Easy to Setup VAS: Tracer SC+ includes a VAV Air System (VAS) specifically designed for both BACnet and LonTalk® VAV controllers. This VAS is
designed for easy setup.
Easy to Setup VAS: As a part of the standard application, VAS calculates the duct static pressure setpoint based on the VAV unit with a damper in
the maximum flow position.
Ventilation Optimization:
As a part of the standard application, the VAV system has the ability to calculate the ventilation setpoint for the air handler unit.
In addition, the Symbio 500 controllers have a ventilation ratio limit feature that automatically increases airflow to maintain the
required ventilation while operating within system limits for outside air percent concentrations in the supply air stream.

12 BAS-SVX091A-EN
Table 2. Symbio 500 features (continued)
Feature Description
CO2-based Demand Control
Ventilation:
As a part of the standard application, the VAV system has the ability to calculate the ventilation setpoint for the air handler unit
based on the CO2concentration in one or more spaces.
Ventilation Flexibility:
Ventilation can be managed in the following ways:
• Fixed occupancy ventilation setpoint
• Scheduled (calculated) ventilation setpoint
• Occupancy sensor to switch between normal and reduced ventilation
• CO2sensor for demand-controlled ventilation
Temperature Statistics: As a part of the standard application, both the VAS and Area applications calculate the minimum space temperature (and
source), maximum space temperature (and source), and the average space temperature.
Controller Compatibility: The Symbio 500 controller integrates with other BACnet systems and devices using BACnet MS/TP. The Symbio 500 controller
provides standard BACnet objects (data points) that can be read by and/or written to by other systems.
Trane Air-Fi Wireless
Communication
Symbio 500 can communicate wirelessly to the BAS and zone sensors through the Trane Air-Fi Wireless system (BACnet/
Zigbee). This factory— or field-installed offering reduces project installation time and complexity and delivers reliable signal
strength through self-repairing mesh technology. Air-Fi wireless zone sensors are available in multiple configurations,
measuring temperature, relative humidity, CO2and/or occupancy status, and can easily be relocated to support changing needs
of the space. In most installations, batteries will last the lifetime of the system, saving time and money.
Symbio 500 Controller Features

BAS-SVX091A-EN 13
Controller Comparisons
Table 3. Comparison of the Symbio 500 and UC400 to VAV550/551
Symbio 500 and Tracer UC400 VAV Tracer VV550/VV551 VAV 4.2
Supports BACnet. Supports LonTalk. Supports Trane proprietary Comm4 or Comm3.
Local CO2 sensor input is available. No local CO2 sensor input. Uses only a
communicated value.
Local CO2 sensor input is available.
Single star (*) initiates cool minimum airflow
override.(a)
Single star (*) initiates cool minimum airflow
override.(a)
Single star (*) initiates maximum flow override after
pressing the ON button. Override is held until the
thumbwheel is adjusted.
Double star (**) initiates cool maximum airflow
override. (b)
Double star (**) initiates cool maximum airflow
override.(b)
Double star (**) initiates unoccupied override after
pressing the ON button. Override is held until the
thumbwheel is adjusted.
Does not support VariTrac central control panel
(CCP2 and CCP3).
Does not support VariTrac central control panel
(CCP2 and CCP3).
Does support VariTrac CCP2 and CCP3.
Supports ventilation flow control.
Note: Single duct application.
Supports ventilation flow control. Does not support ventilation flow control.
Supports flow tracking control.
Note: Single duct application.
Supports flow tracking control. Does not support flow tracking control.
Supports enhanced ventilation control sequences. Supports enhanced ventilation control sequences. Does not support enhanced ventilation control
sequences.
Supports auto-commissioning sequence. Supports auto-commissioning sequence. Does not support auto-commissioning sequence.
Does not support zone sensor air balance
sequence.
Supports zone sensor air balance sequence. Does not support zone sensor air balance
sequence.
(a) By simply turning the thumbwheel to *, or increasing the setpoint to maximum on display sensors (end of range in one direction), the controller drives the air valve to the
minimum flow setpoint.
(b) Turning the thumbwheel to the **, or decreasing the setpoint to minimum on display sensors (end of range in the other direction), the controller drives the air valve to the
maximum flow setpoint.

14 BAS-SVX091A-EN
Device Connections
Table 4. Device connections
Connection Quantity Types Range Notes
Analog input (AI1 to
AI5)
5
Temperature 10k Ω – Type II, 10k Ω – Type III,
2252 Ω – Type II, 20 kΩ – Type IV,
100 kΩ
AI1 to AI4 can be configured for timed override
capability.
Setpoint 189 Ω to 889 Ω
Resistive 100 Ω to 100 kΩ Typically used for fan speed switch.
RTD Balco™ (Ni-Fe) 1kΩ, 385 (Pt)
1kΩ, 375 (Pt) 1kΩ, 672 (Ni) 1kΩ,
RTDs are not used in this application.
Universal input (UI1
and UI2) 2
Linear 0–20 mA
These inputs may be configured to be thermistor or
resistive inputs, 0–10 Vdc inputs, or 0–20 mA inputs.
Linear 0–10 Vdc
Temperature 10 kΩ thermistor
Setpoint 189 Ω to 889 Ω
Resistive 100 Ω to 100 kΩ
Binary Open collector/dry contact Low impedance relay contacts recommended.
Pulse Solid state open collector Minimum dwell time is 25 ms On and 25 ms Off.
RTD Balco™ (Ni-Fe) 1 kΩ, 385 (Pt) 1
kΩ, 375 (Pt) 1kΩ, 672 (Ni) 1kΩ,
RTDs are not used in this application.
Binary input (BI1 to
BI3) 3 24 Vac detect
The Symbio 500 controller provides the 24 Vac that is
required to drive the binary inputs when using the
recommended connections.
Binary output (BO1 to
BO3)
3 Relay .05 A @24 Vac pilot duty Power needs to be wired to the binary output. All
outputs are isolated from each other and from ground
or power. Ranges given are per contact.
Binary output (BO4 to
BO9)
6 TRIAC 0.5 A max @24-277 Vac, resistive
and pilot duty
Use for modulating TRIAC. User determines whether
closing high side (providing voltage to the grounded
load) or low side (providing ground to the power load).
Ranges given are per contact and power comes from
TRIAC SUPPLY circuit.
Analog output/ binary
input (AO1/BI4 and
AO2/BI5)
2
Linear output 0–20 mA
Each termination must be configured as either an
analog output or binary input.
Linear output 0–10 Vdc
Binary input Dry contact
PWM output 80 Hz signal @ 15 Vdc
Pressure inputs (PI1
and PI2)
2 3-wire 0–5 in H2O Pressure inputs supplied with 5 volts of power.
Designed for Kavlico™ pressure transducers.
Overall Point Total 23

BAS-SVX091A-EN 15
Expansion Modules
The Symbio 500 controller has 32 on-board points. The controller can be point-expanded by using
expansion modules. The Symbio 500 can have an additional 110 points, for a total of 133 points
Any combination of XM30, XM32, XM70, or XM90 Expansion Modules are supported. A maximum of
two XM30, or XM32 modules (in aggregate) can be powered from the DC power of the IMC link. XM70
and XM90 modules require an AC power supply.
For more information, refer to the Tracer XM30, XM32, XM70,and XM90 Expansion Modules
Installation, Operations, and Maintenance manual BAS-SVX46*-EN.

16 BAS-SVX091A-EN
Device Inputs/Outputs
Below is a list of device inputs and outputs:
• A twisted/shielded communication link
• Zone sensor
• Occupancy sensor (optional)
• Discharge Air Temperature (DAT) and/or Supply Air Temperature (SAT)
• CO2
• sensor
• 24 Vac, Class II power
In addition to the points used for the VAV application, the spare inputs and outputs on the Symbio 500
controller may be used for ancillary control and programmed using Tracer TU Tracer Graphical
Programming 2 (TGP2).
Note: For more information on wiring spare points, refer to the Symbio 500 Programmable Controller
Installation, Operation, and Maintenance Manual (BAS-SVX090).
Analog Inputs
Table 5. Analog inputs
Analog Inputs Description
AI1 Space temperature; thermistor: 10k Ω @77°F (25°C)
Range: 32°F to 122°F (0°C to 50°C)
AI2 Space setpoint; potentiometer: 1kΩ
Range: from 50°F to 90°F (10°C to 32.2°C), */** (thumbwheel) functionality supported
AI3 Spare
AI4 Discharge air temperature: 10k Ω @77°F (25°C)
Range: from -40°F to 212°F (-40°C to 100°C)
AI5 Discharge air temperature: 10k Ω @77°F (25°C)
Range: from -40°F to 212°F (-40°C to 100°C)
Universal Inputs
Table 6. Universal inputs
Universal Inputs Description
UI1 Spare, but recommended for relative humidity
Resistive/thermistor inputs: 0-10 Vdc inputs or 4-20 mA inputs
Current Mode Impedance: 200 Ω, Voltage Mode Impedance: 10k Ω minimum
UI2 Provided point for CO2
Resistive/thermistor inputs: 0-10 Vdc inputs or 4-20 mA inputs
Current Mode Impedance: 200 Ω, Voltage Mode Impedance: 10k Ω minimum
Pressure Inputs
Table 7. Pressure inputs
Pressure Inputs Description
P1 Supply airflow, pressure transducer
From 0 to 2 in. water column (0 to 498 Pa)
P2 Spare (recommended for dual duct secondary airflow)

BAS-SVX091A-EN 17
Binary Inputs
Table 8. Binary inputs
Binary Inputs Description
BI1 Occupancy
BI2 Spare
BI3 Spare
Binary Outputs
Table 9. Binary outputs
Binary
Outputs
Type Output Rating
BO1 Fan 0.5A @ 24Vac pilot duty
BO2 Spare Relay 0.5A @ 24Vac pilot duty
BO3 Spare Relay 0.5A @ 24Vac pilot duty
BO4 Fan ON/OFF 0.5A @ 24Vac pilot duty
BO5 Heat stage 3 TRIAC 0.5A @ 24Vac pilot duty
BO6 Heat stage 2/Water Valve Close TRIAC 0.5A @ 24Vac pilot duty
BO7 Heat stage 1/Water Valve Close TRIAC 0.5A @ 24Vac pilot duty
BO8 Air Damper Close TRIAC 0.5A @ 24Vac pilot duty
BO9 Air Damper Open TRIAC 0.5A @ 24Vac pilot duty
Analog Outputs
Table 10. Analog outputs
Analog Outputs Description
AO1 Spare output.
Voltage output is 0 to 10 Vdc, 500 Ω minimum impedance.
Current output is 4-20 mA, 500 Ω max. impedance.
Also can output 100 Hz PWM signal for control of a Trane fan-powered ECM fan setpoint signal
to the EC motor.
AO2 Spare.
Voltage output is 0 to 10 Vdc, 500 Ω minimum impedance.
Current output is 4-20 mA, 500 Ω maximum impedance.
Also used on Trane VAV units for SCR electric heat 0-to-10 Vdc modulation control.
Note: For more information on wiring spare points, refer to the Symbio 500 Programmable Controller
Installation, Operation, and Maintenance manual (BAS-SVX090).
Device Inputs/Outputs

18 BAS-SVX091A-EN
Wiring Installation
Controller Pre-power Checkout
WARNING
Live Electrical Components!
Failure to follow all electrical safety precautions when exposed to live electrical components
could result in death or serious injury.
When it is necessary to work with live electrical components, have a qualified licensed
electrician or other individual who has been properly trained in handling live electrical
components perform these tasks.
• Check the supply voltage at XFRM.
Note: Proper polarity must be maintained. The 24 Vac is the hot side (+) and is the ground
side (-) of the 24 Vac input.
Important: The Symbio 500 controller cannot be powered from a common 24 Vac transformer that
is supplying power to a device containing a full-wave rectifier bridge in its power supply.
The acceptable voltage is 20.4 to 27.6 (24 Vac nominal). However, voltages at either
extreme may result in increased system instability.
• Verify communications wiring has properly been terminated to link plus and negative at XFRM 24
Vac (+) and (-) terminals.
Note: Polarity must be maintained on the BACnet communications link.
• Verify that the zone sensor connections are correct as detailed in the Symbio 500 controller wiring
section.
• If heat has been added to the unit, verify that the proper output connections are correct, as detailed
in the Symbio 500 controller wiring section.
• Verify that the tubing is properly connected to the differential pressure transducer.
Transformer Recommendations
A 24 Vac power supply must be used for proper operation of the binary inputs, which requires 24 Vac
detection. In addition, the spare 24 Vac outputs may be used to power relays and TRIACS.
•AC transformer requirements: UL listed, Class 2 power transformer, 24 Vac ±15%, device max
load 24 VA. The transformer must be sized to provide adequate power to the controller (24 VA) and
binary outputs loads.
•CE-compliant installations: The transformer must be CE marked and SELV compliant per IEC
standards.
Controller Power Wiring
WARNING
Hazardous Voltage!
Failure to disconnect power before servicing could result in death or serious injury.
Disconnect all electric power, including remote disconnects before servicing. Follow proper
lockout/tagout procedures to ensure the power can not be inadvertently energized. Verify that
no power is present with a voltmeter.

BAS-SVX091A-EN 19
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.
NOTICE
Use Copper Conductors Only!
Failure to use copper conductors could result in equipment damage as the equipment was not
designed or qualified to accept other types of conductors.
Guidelines
• Use 18 AWG copper wire (recommended) for power and connect to terminals XFRM 24 Vac and .
• Use U.L. listed, Class 2 power transformer, 20.4 to 27.6 Vac (24 Vac nominal).
• Size the transformer to provide adequate power to the Symbio 500 controller (24 VA maximum) and
outputs (maximum 12 VA for each binary output).
Important: A dedicated 24 Vac, Class 2 transformer is recommended to power the Tracer Symbio
500 controller. When powering multiple controllers from one transformer, polarity must
be maintained. Terminal 24 Vac is designated positive (+) and terminal is
negative (-) to the unit casing ground. It is important to include power consumption in
the calculations.
• The power consumption for cooling-only Series F Models (VariTrac™ and VariTrane™) is up to 28
VA. Refer to the table below for information about calculating actual VA requirements.
Wiring Installation

20 BAS-SVX091A-EN
Item Sub VA Draw Per I/O (24 Vac) Vac)
Symbio 500 (No I/O) 8 VA
5 x AI 0.2 VA per AI 1 VA
2 x UI 0.13 VA per UI 0.25 VA
2 x PI 0.13 VA per PI 0.25 VA
Symbio 500 Board 3 x BI 0.17 VA per BI 0.5 VA
2 x AO 1 VA Per AO 2 VA
3 x BO (Relay) 1 VA Per Relay (No Load) 3 VA
6 x BO (TRIAC) 0.34 VA Per TRIAC (No Load) 1 VA
Subtotal for Symbio 500; 16 VA
24 Vdc Supply 200 mA(a) 1 VA Per 25 mA DC 8 VA
Total for Symbio 500; 24 VA
Binary Outputs (Relay and
TRIAC)
BO1 to BO3 See “Device Connections,” p. 14 See “Device Connections,” p. 14
BO4 to BO9 0.5 A- 12 VA@ 24 Vac 12 VA Maximum
Below is an example calculation for a cooling-only box current requirements:
Description
• Symbio 500 no I/O
• Setpoint and Zone Temperature
• Flow
• Occupancy Input
• Binary for Air Damper (only one energized at a time,
not including
• actuator draw)
• Total
Draw
• 8 VA
• 0.4 VA
• 0.13 VA
• 0.17 VA
• 0.34 ςΑ
• 9.2 VA (Plus air damper draw)
With a Trane F Series Box: 13.2 VA Total
(a) See device connected to DC supply for current draw.
• Replace the control box cover after field wiring to prevent any electromagnetic interference.
• Review the table below for factory-installed components and voltage amperage.
Table 11. Binary load values
Style Volt Amps
F - Style Actuator 4 VA
Air Valve Actuator C through E Style 12 VA
Fan Power Fan Output 6 VA
Hot Water Proportional 4 VA
Hot Water 2 Position 6.5 VA
Electric Heater Magnetic Contactor 10 VA
Electric Heater Mercury Contactor 12 VA
Note: VariTrane cooling-only Series D and E models consume 20 VA (12 VA for the actuator and 8 VA
for the board). The heating output ratings remain the same.
Wiring Installation