Trane Precedent THJ120 - 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.
December 2022
RT-SVX074A-EN
Installation, Operation, and Maintenance
Packaged Rooftop Air
Conditioners
Precedent™ Cooling and Electric
Heat
High Efficiency
6 to 25 Tons – 60 Hz
Model Numbers: THJ072A - THJ300A

Trane Precedent THJ120 Specifications

General

Brand	Trane
Model	Precedent THJ120
Category	Air Conditioner
Language	English

Summary

Introduction and Safety Guidelines

Field Wiring and Personal Protective Equipment Safety

Highlights safety requirements for field wiring, grounding, and PPE.

Environmental, Health, and Safety Policies

Model Number Description

Pre-Installation Safety and Preparation

Hazardous Voltage Warning Before Servicing

Critical safety alert regarding electrical hazards before performing any work.

Dimensions and Weights

Unit Dimensional Data Overview

Provides detailed dimensions for various unit sizes and configurations.

Installation Clearances and Roof Openings

Specifies required clearances for unit installation and roof openings.

Unit Weights and Center of Gravity

Details unit weights, corner weights, and center of gravity dimensions.

Factory Installed Options Weights

Lifting and Rigging Procedures

Guidelines for safely lifting and rigging the unit.

Installation Procedures

General Installation Safety and Warnings

Covers critical safety aspects like lifting, roof damage, and structural integrity.

Ductwork and Roof Curb Installation

Procedures for connecting ductwork and installing roof curbs.

Rigging and Unit Placement

Guidelines for rigging and setting the unit onto the curb.

Unit Conversion Procedures

Electrical Power and Wiring Requirements

Guidelines for main power, electric heat, and low voltage wiring.

Condensate Drain Configuration

Field Installed Wiring and Grounding

Guidelines for field-installing power wiring and grounding.

Pre-Start Procedures

Electrical and Component Safety

Safety precautions for handling high voltage, capacitors, and rotating components.

Voltage Imbalance and Electrical Phasing

Procedure for checking voltage imbalance and ensuring correct electrical phasing.

Unit Start-Up

Compressor Start-Up and Hot Gas Reheat

Step-by-step procedures for compressor start-up and hot gas reheat testing.

Final System Setup Checks

Final checks to perform after unit startup and testing.

General Start-Up Safety Alerts

Maintenance Procedures

Hazardous Service Procedures and Monthly Tasks

General safety for maintenance and routine monthly checks.

Coil Cleaning and Component Care

Covers coil cleaning, chemical safety, hail guards, and MCHE coil care.