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Trane Symbio 700 Controller User Manual

Trane Symbio 700 Controller
60 pages
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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
ACC-APG002A-EN
Application Guide
Symbio™ 700 Controller
with Precedent™ Packaged Rooftop
Air-Conditioners

Table of Contents

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Trane Symbio 700 Controller Specifications

General IconGeneral
ModelSymbio 700
CategoryController
ManufacturerTrane
CompatibilityTrane HVAC Systems
DisplayColor touchscreen
Input Voltage24 V AC
Enclosure RatingIP20
Communication ProtocolBACnet, Modbus
Operating Temperature Range-40°F to 158°F (-40°C to 70°C)

Summary

Introduction

Warnings, Cautions, and Notices

Explains the meaning of different advisory types used in the manual.

Safety Warnings

Highlights critical safety requirements for installation and servicing.

Additional Documentation

Related Manuals and Guides

Lists other documents for Symbio 700 and Precedent systems.

Symbio 700 Overview

Field Connection

Details the physical connections for inputs and outputs on the controller.

Unit Configuration

Explains how to configure the Symbio 700 system.

Onboard User Interface

Describes the LCD display and navigation buttons for unit control.

Mobile Application

Covers setup and editing using the Trane Symbio Service app.

Bluetooth Pairing

Provides step-by-step instructions for connecting via Bluetooth.

Startup Sequence

System Initialization

Describes the controller's startup process and self-checks.

Conventional Thermostat Sequence of Operation

Cooling Operation

Details system responses to thermostat inputs during cooling.

Space Temperature Control

Single Loop Control

Explains fan speed modulation based on space temperature.

Single Zone VAV Cooling

Describes fan speed control for VVZT and CVZT systems in cooling.

Variable Volume Discharge Air Control Sequence of Operation

Discharge Air Reset

Method to save energy by adjusting discharge air temperature setpoints.

Duct Static Pressure Control

Modulates fan speed to maintain duct static pressure.

Heat Cool Modes

Heat

Describes unit operation in heating mode with various heat types.

Cool

Covers cooling operation objectives and primary sources.

Maximum Heat

Explains full airflow heating operation with maximum fan speed.

Morning Warm-up

Feature to rapidly increase space temperature before occupancy.

Pre-Cool

Mode to rapidly decrease space temperature before occupancy.

Dehumidification — Hot Gas Reheat

Dehumidification Control

Details initiation and termination based on dew point or humidity.

Dehumidification — Thermostat Control

Explains dehumidification initiation via humidity input or humidistat.

Heat Types

Staged Gas Heat

Describes the operation of two-stage gas heating systems.

Electric Heat — Staged

Details the control of two stages of electric heat.

Outdoor Air Damper Control

Economizer Cooling

Configuration types for economizer damper control.

Ventilation Control

Ensures minimum ventilation requirements are met.

Demand Controlled Ventilation (DCV)

Reduces outdoor air based on space CO2 levels.

General Support Sequences

Fan Setpoints with ERM-driven Fan Types

Adjusts minimum and maximum ERM parameters for airflow tuning.

Compressor Minimum Runtime

Enforces minimum ON and OFF timers for compressors.

Compressor Proof of Operation

Monitors compressor contactor status for safety.

Building Automation System Support Sequences

Occupancy Mode

Controls system based on occupied or unoccupied periods.

Timed Override

Allows temporary override of scheduled unoccupied periods.

Unit Stop

Feature for immediate shutdown of all equipment devices.

Capacity Limit Control

Limits unit capacity based on various factors.

Remote Capacity Control

Allows direct control of unit capacity via external input.

Emergency and Ventilation Override

Manages system response to emergency or ventilation requests.

Service Test Mode

Service Test Timeout

User-selectable duration for operating modes.

Service Test Mode — CVZT, VVZT, and VVDA

Details unit operation for specific configurations in test mode.

Diagnostics

Device Tracker

Tracks statistical data for unit components and run times.

Compressor Proving Diagnostics

Diagnoses issues related to compressor proving input.

Diagnostics – Low Pressure Cutout

Monitors and responds to low pressure cutout events.

Troubleshooting

Unit Communication Fault

Addresses issues with inter-module communications.

Sensor Fault

Details responses when sensor values are out of range.

Compressor Fault

Covers safety functions and responses for compressor failures.

Supply Fan Fault

Lists failures related to the ERM supply fan.

Staged Gas Heat Fault

Diagnostics derived from Modbus ignition controller data.

Economizer Fault

Failure modes and system responses for economizer cooling.

Appendix A

Supply Fan

Provides tables for multi-speed/ERM and variable speed fan speeds.

Compressor Staging

Details compressor staging response to thermostat signals.

Condenser Fan Operation

Explains condenser fan operation for various unit types.

Diagnostics and Alarm Indicator Status

Lists supported diagnostics and their alarm relay functionality.

Space Setpoint Adjustment

Single Setpoint

Defines how active space setpoints are calculated and validated.

Dual Setpoint

Configures independent cooling and heating setpoints.

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