Trane A4AC3048B1000A User Manual

Installer’s Guide
June 2020
88-A4AC3001-1D-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
A4AC3018A1000A
A4AC3023A1000A
A4AC3024A1000A
A4AC3029A1000A
A4AC3030A1000A
A4AC3036A1000A
A4AC3042A1000A
A4AC3043A1000A
A4AC3048B1000A
A4AC3060A1000A
Note: “Graphics in this document are for representation only.
Actual model may differ in appearance.”
Condensing Units

Trane A4AC3048B1000A Specifications

General

Model	A4AC3048B1000A
Type	Heat Pump
Cooling Capacity	48000 BTU/H
Tonnage	4 ton
SEER Rating	Up to 14.5
HSPF Rating	Up to 8.2
Refrigerant	R-410A
Voltage	208/230V
Phase	1
Compressor Type	Scroll

Summary

Section 1. Safety

Section 5. Refrigerant Line Considerations

5.1 Refrigerant Line and Service Valve Connection Sizes

5.3 Required Refrigerant Line Length

Section 7. Refrigerant Line Brazing

7.1 Braze The Refrigerant Lines

Details the initial steps for brazing refrigerant lines, including pipe preparation and cleaning.

Section 8. Refrigerant Line Leak Check

8.1 Check For Leaks

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

Section 9. Evacuation

9.1 Evacuate the Refrigerant Lines and Indoor Coil

Details the process of evacuating the system to a specific micron level for optimal performance.

Section 11. Electrical – Low Voltage

11.2 Low Voltage Hook-up Diagrams

Illustrates wiring configurations for various thermostat and furnace types for correct installation.

Section 12. Electrical – High Voltage

12.1 High Voltage Power Supply

States requirements for matching power supply to nameplate and adhering to national codes.

12.2 High Voltage Disconnect Switch

12.3 High Voltage Ground

Mandates grounding the unit according to national, state, and local codes for safety.

Section 13. Start Up

13.1 System Start Up

Guides through the steps for powering up and starting the system after installation is complete.

Section 14. System Charge Adjustment

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

Details the subcooling method for charging in cooling mode when outdoor temp is above 55°F.

14.3 Subcooling Charging Below 55° F Outdoor Temp.

Section 15. Checkout Procedures and Troubleshooting

15.1 Operational And Checkout Procedures

Lists essential checks to perform after installation for optimal system performance.

15.2 Troubleshooting