Trane A4HP4042D1000A 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 A4HP4042D1000A Specifications

General

Model	A4HP4042D1000A
Type	Heat Pump
HSPF Rating	Up to 8.2
Refrigerant	R-410A
Voltage	208/230V
Phase	1

Summary

Safety and Warnings

General Safety Precautions

Critical safety warnings and precautions for installation and servicing personnel.

Refrigerant and Chemical Hazards

Specific warnings regarding R-410A refrigerant, POE oil, and chemical exposure risks.

Refrigerant Line Considerations

Refrigerant Line and Service Valve Connection Sizes

Refrigerant Line Routing

Precautions for Line Routing

Refrigerant Line Brazing

Braze The Refrigerant Lines

Refrigerant Line Leak Check

Check For Leaks

Evacuation

Evacuate the Refrigerant Lines and Indoor Coil

Electrical - Low Voltage

Low Voltage Maximum Wire Length

Low Voltage Hook-up Diagrams

Electrical - High Voltage

High Voltage Power Supply

Start Up

System Start Up

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

System Charge Adjustment

Temperature Measurements

Instructions on taking temperature measurements for system charge adjustment.

Subcooling Charging in Cooling

Method for adjusting refrigerant charge using subcooling based on outdoor temperature.

Subcooling Charging Below 55° F Outdoor Temp.

Procedure for charging in heating mode for low outdoor temperatures.

Calculating Charge Using the Weigh-In Method

Procedure for calculating and adding refrigerant based on line length using the weigh-in method.

Checkout and Troubleshooting

Operational And Checkout Procedures

Checklist for final inspection, system operation, and charge adjustments after installation.

Troubleshooting

Guide to identifying and resolving common system faults and operational issues.