Trane Precedent YZC048F User Manual

Packaged Rooftop Air Conditioners
Precedent™ with eFlex™
Technology, Gas/Electric
3 to 10 Tons - 60 Hz
Installation, Operation, and Maintenance
January 2021
RT-SVX46G-EN
Model Numbers:
YZC036E YZC072F
Model Numbers:
YZC048F YZC090F
Model Numbers:
YZC060E YZC102F
Model Numbers:
YZC120F
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.

Trane Precedent YZC048F Specifications

General

Model	YZC048F
Category	Air Conditioner
IEER	13.5
Refrigerant	R-410A
Voltage	208/230V
Phase	3
Hertz	60
Compressor Type	Scroll
Cooling Capacity	48000 BTU/hr
Sound Level (Outdoor Unit)	74 dBA

Summary

Model Number Description

General Unit Information and Components

Pre-Installation and Dimensions

Unit Clearances and Installation Space Requirements

Installation Procedures

Foundation and Ductwork Setup

Guidelines for base support, air duct connections, and seismic bracing.

Roof Curb Installation and Considerations

Horizontal Discharge Conversion

Gas Heat and Condensate Drain Setup

Instructions for gas heat installation and condensate drainage system configuration.

Electrical Wiring and Filter Installation

Pre-Start and Unit Startup Procedures

Pre-Start Electrical and Component Checks

Verifying voltage, phasing, and readiness of key components before startup.

ReliaTel Controls and Test Mode Operation

Utilizing the ReliaTel control system and performing service test modes.

Sequence of Operation and Mode Functionality

Understanding unit operation in cooling, heating, and economizer modes.

Final System Setup and Programming

Completing initial setup, programming, and inspections before operation.

Maintenance Procedures

Monthly Maintenance Tasks

Seasonal Maintenance and Coil Cleaning

Troubleshooting and Fault Diagnosis

ReliaTel Control Diagnostics and Status Checks

Interpreting RTRM diagnostics and system status indicators for fault finding.

Failure Code Interpretation and Diagnosis

Understanding error codes for system, heat, cool, and service failures.

Zone Sensor and Fan Failure Troubleshooting

Resetting Lockouts and Component Testing

Procedures for clearing lockouts and testing specific unit components.