Trane A4HP4048A1000B User Manual

Installer’s Guide
May 2022
88-A4HP4001-1E-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
A4HP4018D1000A A4HP4017A1000B
A4HP4024D1000A A4HP4018A1000B
A4HP4030D1000A A4HP4023A1000B
A4HP4036D1000A A4HP4024A1000B
A4HP4042D1000A A4HP4030A1000B
A4HP4048D1000A A4HP4036A1000B
A4HP4060D1000A A4HP4042A1000B
A4HP4048A1000B
A4HP4060A1000B
Note: “Graphics in this document are for representation only.
Actual model may differ in appearance.”
Heat Pumps

Trane A4HP4048A1000B Specifications

General

Brand	Trane
Model	A4HP4048A1000B
Category	Heat Pump
Language	English

Summary

Section 1. Safety

Installation and Electrical Safety

Essential safety guidelines for installation, electrical work, and handling R-410A refrigerant.

Section 5. Refrigerant Line Considerations

Section 7. Refrigerant Line Brazing

Brazing Procedure

Section 8. Refrigerant Line Leak Check

Leak Detection Procedure

Steps to pressurize the system with nitrogen and check for leaks using soapy solution.

Section 9. Evacuation

Evacuating Refrigerant Lines and Indoor Coil

Instructions for evacuating the system to a specific micron level using a vacuum pump and micron gauge.

Section 10. Service Valves

Opening the Gas Service Valve

Opening the Liquid Service Valve

Section 11. Electrical - Low Voltage

Defrost Control Operation

Section 12. Electrical - High Voltage

High Voltage Power Supply Requirements

High Voltage Disconnect Switch Installation

High Voltage Grounding

Section 13. Start Up

System Start Up Procedure

Step-by-step guide for powering up and initiating the system after installation.

Section 14. System Charge Adjustment

Temperature Measurements for Charging

Subcooling Charging (Above 55°F Outdoor)

Detailed procedure for subcooling adjustment in cooling mode when outdoor temperature is above 55°F.

Superheat Charging for Fixed Orifice Systems

Procedure for superheat adjustment using a fixed orifice charging table based on temperature measurements.

Weigh-In Method for Below 55°F Outdoor (Heating Only)

Method for determining and adding refrigerant charge using the weigh-in method for heating mode below 55°F.

Section 15. Checkout Procedures and Troubleshooting

Operational and Checkout Procedures

A checklist of final operational checks and inspections to ensure proper system function.

System Faults Troubleshooting

A guide to identifying system faults and their primary or secondary causes for troubleshooting.