Trane A4AC5048D1000A User Manual

Installation and Operation Manual
April 2022
88-A4AC5001-1A-EN
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 pre-
cautions in the literature and on the tags, stickers, and labels that are attached to the equipment.
Models
A4AC5018D1000A
A4AC5024D1000A
A4AC5030D1000A
A4AC5036D1000A
A4AC5042D1000A
A4AC5048D1000A
A4AC5060D1000A
Note: “Graphics in this document are for representation only.
Actual model may differ in appearance.”
Condensing Units

Trane A4AC5048D1000A Specifications

General

Model Number	A4AC5048D1000A
Category	Heat Pump
Brand	Trane
Cooling Capacity (BTU)	48000
Cooling Capacity (Ton)	4
Heating Capacity (BTU)	48000
Heating Capacity (Ton)	4
HSPF Rating	8.2
Refrigerant Type	R-410A
Voltage (V)	208/230
Phase	1
Sound Level (Outdoor Unit, dB)	74
Compressor Type	Climatuff® Scroll

Summary

Safety and Warnings

Refrigerant Handling and Pressure Safety

Covers R-410A refrigerant properties, pressure hazards, and proper service equipment use.

Electrical Hazard Precautions

Warns about working with live electrical components and potential for severe injury or death.

Service Valve and Component Safety

Refrigerant Line Installation and Routing

Refrigerant Line Brazing and Leak Testing

Brazing Refrigerant Lines

Step-by-step instructions for brazing refrigerant lines, including preparation and purging.

Refrigerant Line Leak Check Procedure

Details the process of pressurizing lines with nitrogen and checking for leaks using a soapy solution.

System Evacuation and Service Valve Operation

Evacuating Refrigerant Lines and Coil

Explains how to evacuate the system to achieve a target micron level for optimal performance.

Opening Gas and Liquid Service Valves

Electrical Wiring and Power Supply

Low Voltage Wiring Diagrams and Limits

High Voltage Power Supply and Grounding

Covers requirements for high voltage power supply, disconnect switches, and proper grounding.

System Start-Up and Refrigerant Charging

Step-by-Step System Start-Up

Subcooling Charging Method for Cooling

Explains how to charge the system using subcooling measurements based on line length and temperature.

Superheat Charging for Fixed Orifice Systems

Post-Installation Checkout and Performance

Operational and Checkout Procedures