Trane Precedent WSJ300A - User Manual

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.
April 2023
PKGP-SVX010B-EN
Installation, Operation, and Maintenance
Packaged Rooftop Air
Conditioners
Precedent™ Heat Pump
Standard Efficiency
12.5 to 25 Tons — 60 Hz
Model Numbers: WSJ150A - WSJ300A, DSJ150A - DSJ300A

Trane Precedent WSJ300A Specifications

General

Brand	Trane
Model	Precedent WSJ300A
Category	Air Conditioner
Language	English

Summary

Unit Overview and Safety Warnings

Key Safety Warnings and Advisories

Highlights critical safety information for installation and operation.

Introduction to Safety and Environmental Practices

Electrical Wiring Safety and Required PPE

Emphasizes qualified personnel for wiring and required PPE for technician safety.

Additional Safety, Document, and Hazard Information

Gas Leak Detection and Fire Prevention Procedures

Provides critical steps for gas leak detection and response to prevent fire.

General Unit Information and Specifications

Model Number Coding System Explained

Explains the coding system used to define unit specifications and options.

Compressor and Pressure Control Functions

Details compressor disable (CPR1/2) and low-pressure control operations.

Zone Control and System Monitoring

High Pressure Control Functionality

Explains the function of high-pressure controls in protecting the compressor.

Pre-Installation Safety and Handling

Safe Handling of Fiberglass Insulation and PPE

Electrical Hazard Warnings and Safe Servicing Practices

Warns about electrical hazards before servicing, including heater element inspection.

Unit Dimensions, Weights, and Rigging

Unit Weights and Factory Option Weight Additions

Safe Lifting and Rigging Procedures and Warnings

Provides critical safety warnings and procedures for lifting and rigging the unit.

Installation Steps and Requirements

Installation Safety Warnings and General Requirements

Critical safety warnings for handling heavy objects and potential roof collapse.

Electrical Power Supply and Gas Piping Connections

Covers critical safety and connection requirements for main power supply and gas piping.

Pre-Start Procedures and Operational Checks

Voltage Imbalance Measurement and Electrical Phasing Verification

Explains how to measure voltage imbalance and verify correct electrical phasing for motors.

Crankcase Heaters and Symbio Control System Overview

Unit Start-Up Sequence and Procedures

Ignition Module Diagnostic Codes and Function

Compressor Start-Up, Pressure Checks, and Reheat Testing

Final System Setup, Configuration, and Operational Checks

Routine Maintenance Procedures

Monthly and Seasonal Maintenance Checks

Coil Cleaning Procedures and Chemical Handling Safety

Procedure for Safely Turning Off Gas Supply

Gas Heat Operation and Maintenance

Gas Heat Safety, Explosion Prevention, and Thermostat Use

Covers gas heat safety, explosion prevention, and thermostat operation.

Heating Cycle Operation and Safety Control Functions

Heating System Start-Up and Temporary Shutdown Procedures

Limited Warranty Information

Electric Air Conditioner Warranty Coverage and Exclusions