American Standard 4A7A4060L User Manual

11-AC11D1-9E-EN
ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES
IMPORTANT — This Document is customer property and is to remain with this unit. Please return to service informa-
tion pack upon completion of work.
Condensing Units
These instructions do not cover all variations in systems or provide for every possible contingency to be met in connection with
the installation. Should further information be desired or should particular problems arise which are not covered sufficiently for the
purchaser’s purposes, the matter should be referred to your installing dealer or local distributor.
Note: The manufacturer recommends installing only approved matched indoor and outdoor systems. Some of the benefits of
installing approved matched indoor and outdoor split systems are maximum efficiency, optimum performance and the best overall
system reliability.
4A7A4018 – 060
Table of Contents
Section 1. Safety ..................................................................................... 2
Section 2. Unit Location Considerations ............................................. 3
Section 3. Unit Preparation.................................................................... 5
Section 4. Setting the Unit ..................................................................... 5
Section 5. Refrigerant Line Considerations ......................................... 6
Section 6. Refrigerant Line Routing ..................................................... 7
Section 7. Refrigerant Line Brazing ...................................................... 8
Section 8. Refrigerant Line Leak Check ............................................. 10
Section 9. Evacuation .......................................................................... 11
Section 10. Service Valves .................................................................. 11
Section 11. Electrical - Low Voltage ................................................... 12
Section 12. Electrical - High Voltage .................................................. 15
Section 13. Start Up.............................................................................. 16
Section 14. System Charge Adjustment............................................. 17
Section 15. Checkout Procedures ...................................................... 23
Section 16. Refrigerant Circuits .......................................................... 23
Section 17. Wiring Diagrams ............................................................... 26
Section 18. Pressure Curves ............................................................... 36
Installation and Operation Manual

American Standard 4A7A4060L Specifications

General

Brand	American Standard
Model	4A7A4060L
Category	Air Conditioner
Language	English

Summary

Section 1. Safety

General Safety Warnings

Covers electrical hazards, refrigerant handling, and component safety precautions.

Section 5. Refrigerant Line Considerations

Section 6. Refrigerant Line Routing

Routing Precautions

Guidelines to prevent noise and ensure proper routing of refrigerant lines within structures.

Section 7. Refrigerant Line Brazing

Braze The Refrigerant Lines

Step-by-step instructions for brazing refrigerant lines to service valves.

Section 8. Refrigerant Line Leak Check

Performing a Leak Check

Procedures for pressurizing lines with nitrogen and checking for leaks.

Section 9. Evacuation

Evacuate Refrigerant Lines and Indoor Coil

Instructions for using a vacuum pump and micron gauge to achieve proper system evacuation.

Section 10. Service Valves

Open the Gas Service Valve

Details the procedure for opening the gas service valve safely.

Open the Liquid Service Valve

Provides critical safety steps for opening the liquid service valve.

Section 11. Electrical - Low Voltage

Low Voltage Hook-up Diagrams

Illustrates wiring connections for various thermostat and air handler configurations.

Section 12. Electrical - High Voltage

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 in Cooling Mode

Detailed procedure for subcooling adjustment in cooling mode above 55°F.

Section 17. Wiring Diagrams

Section 18. Pressure Curves

Cooling Performance Pressure Curves