Trane A4HP4024D1000A 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 A4HP4024D1000A Specifications

General

Model Number	A4HP4024D1000A
Category	Heat Pump
Cooling Capacity (BTU/h)	24000
Heating Capacity (BTU/h)	24000
SEER Rating	Up to 14
HSPF Rating	Up to 8.2
Refrigerant Type	R-410A
Voltage (VAC)	208/230
Phase	1
Compressor Type	Scroll

Summary

Section 1. Safety

Section 2. Unit Location Considerations

2.3 Refrigerant Piping Limits

2.4 Suggested Locations for Best Reliability

Section 5. Refrigerant Line Considerations

5.1 Refrigerant Line and Service Valve Connection Sizes

Table 5.1 lists the required vapor and liquid line sizes and service valve connection sizes for different models.

Section 7. Refrigerant Line Brazing

7.1 Braze The Refrigerant Lines

Outlines the initial steps for brazing refrigerant lines, including deburring and cleaning pipe ends.

Section 8. Refrigerant Line Leak Check

8.1 Check For Leaks

Details the procedure for checking refrigerant lines for leaks by pressurizing with nitrogen and using a soapy solution.

Section 9. Evacuation

9.1 Evacuate the Refrigerant Lines and Indoor Coil

Explains how to evacuate the refrigerant lines and indoor coil using a micron gauge to achieve a specific vacuum level.

Section 11. Electrical - Low Voltage

11.1 Low Voltage Maximum Wire Length

11.2 Low Voltage Hook-up Diagrams

11.3 Defrost Control

Section 12. Electrical - High Voltage

12.1 High Voltage Power Supply

Warns about live electrical components and specifies compliance with power supply and wiring codes.

12.2 High Voltage Disconnect Switch

12.3 High Voltage Ground

Section 13. Start Up

13.1 System Start Up

Section 14. System Charge Adjustment

14.1 Temperature Measurements

14.2 Subcooling Charging in Cooling (Above 55° F Outdoor Temp.)

Details the subcooling method for charging systems when outdoor temperatures are above 55°F.

14.3 Subcooling Charging Below 55° F Outdoor Temp. (In Heating Only)

Explains that weighing-in charge in heating mode is recommended for outdoor temps below 55°F.

Section 15. Checkout Procedures and Troubleshooting

15.1 Operational And Checkout Procedures

Lists essential checks and operational procedures to ensure proper unit performance after installation.

15.2 Troubleshooting

Provides a system faults chart to identify primary and secondary causes for various operational issues.