Trane A4AC3043A1000A User Manual

Installer’s Guide
April 2020
88-A4AC3001-1C-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
A4AC3048A1000A
A4AC3060A1000A
Note: “Graphics in this document are for representation only.
Actual model may differ in appearance.”
Condensing Units

Trane A4AC3043A1000A Specifications

General

Model	A4AC3043A1000A
Type	Heat Pump
SEER Rating	14
HSPF Rating	8.2
Refrigerant	R-410A
Voltage	208/230V
Phase	1
Stages	Single-Stage

Summary

Installer's Guide

Condensing Units Models Overview

Section 1. Safety

Electrical and Chemical Safety Warnings

Highlights electrical hazards, chemical exposure warnings, and necessary precautions.

Section 5. Refrigerant Line Considerations

Line Sizes and Service Valve Connections

Section 7. Refrigerant Line Brazing

Brazing Preparation and Technique

Steps for preparing lines for brazing and the brazing process itself.

Section 8. Refrigerant Line Leak Check

Procedure for Checking Refrigerant Leaks

Procedure for pressurizing lines with nitrogen and checking for leaks using soapy solution.

Section 9. Evacuation

Evacuating Refrigerant Lines and Coil

Instructions for evacuating refrigerant lines and indoor coil to a specific micron level.

Section 11. Electrical – Low Voltage

Low Voltage Wire Lengths and Diagrams

Low Voltage Hook-up Diagrams

Section 12. Electrical – High Voltage

High Voltage Power, Disconnect, and Grounding

Safety guidelines for high voltage power supply, disconnect switches, and grounding requirements.

Section 13. Start Up

System Start-Up Procedure

Step-by-step instructions for safely powering up and starting the installed system.

Section 14. System Charge Adjustment

Temperature Measurements and Subcooling Charging

Importance of temperature measurements and subcooling method for charging above 55°F.

Determining Final Subcooling Value Charts

Charts to determine the final subcooling value based on line length and lift for different unit sizes.

Stabilize, Measure, and Find Gage Pressure

Adjusting Refrigerant and Verifying Performance

Procedures for adjusting refrigerant levels and verifying system performance.

Record System Info and Weigh-In Charge Method

Fixed Orifice Superheat Charging Table

Superheat Charging with Psychrometer

Section 15. Checkout Procedures and Troubleshooting

Operational and Checkout Procedures Checklist

Section 15. Troubleshooting

Compressor Start and Contactor Troubleshooting

Compressor Not Running Troubleshooting

System Faults and Causes Table

Section 16. Refrigerant Circuits