American Standard 4A7A6048N - User Manual

11-AC36D1-7D-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.
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.
Installation and Operation Manual
Condensing Units
4A7A6018 – 061
Table of Contents
Section 1. Safety ..................................................................................... 2
Section 2. Unit Location Considerations ............................................. 3
Section 3. Unit Preparation.................................................................... 4
Section 4. Setting the Unit ..................................................................... 5
Section 5. Refrigerant Line Considerations ......................................... 5
Section 6. Refrigerant Line Routing ..................................................... 6
Section 7. Refrigerant Line Brazing ...................................................... 7
Section 8. Refrigerant Line Leak Check ............................................... 9
Section 9. Evacuation ............................................................................ 9
Section 10. Service Valves .................................................................. 10
Section 11. Electrical - Low Voltage ................................................... 10
Section 12. Electrical - High Voltage .................................................. 13
Section 13. Start Up.............................................................................. 14
Section 14. System Charge Adjustment............................................. 15
Section 15. Checkout Procedures ...................................................... 20
Section 16. Refrigeration Circuits........................................................20
Section 17. Wiring Diagrams................................................................23
Section 18. Pressure Curves................................................................37

Summary

Section 1. Safety

Live Electrical Component Safety

Warning about hazards from live electrical components during installation and servicing.

R-410 A Refrigerant Safety Precautions

Hazards associated with R-410A refrigerant and proper service equipment.

Liquid Line Service Valve Safety

Caution when opening the liquid line service valve to prevent injury.

Section 5. Refrigerant Line Considerations

Factory Refrigerant Charge Information

Refrigerant Line Insulation Requirements

Section 7. Refrigerant Line Brazing

Step-by-Step Refrigerant Line Brazing

Step-by-step instructions for brazing refrigerant lines.

Section 8. Refrigerant Line Leak Check

Performing the Refrigerant Line Leak Test

Procedure for leak checking refrigerant lines using dry nitrogen.

Section 9. Evacuation

System Evacuation Procedure

Steps for evacuating the system using a micron gauge.

Section 10. Service Valves

Opening Gas and Liquid Service Valves

Procedures for opening both gas and liquid service valves, including safety notes.

Section 12. Electrical - High Voltage

High Voltage Power Supply Safety

Warning and guidelines for high voltage power supply.

High Voltage Disconnect Switch Installation

Section 13. System Start Up

System Start Up Procedure

Step-by-step procedure for starting up the system.

Section 14. System Charge Adjustment

Temperature Measurements for System Charging

Subcooling Charging in Cooling Mode

Method for subcooling charging in cooling mode above 55°F.

Weigh-In Method for System Charging

Section 15. Checkout Procedures

Operational and Final System Checkout

Checklist for final operational and checkout procedures.

Section 17. Wiring Diagrams

Wiring Diagrams: 024 N & 036 N Models

Wiring Diagrams: 048 N Models

Wiring Diagrams: 060 N Models

Wiring Diagrams: 018 J - 048 J Models

Wiring Diagrams: 035 J Models

Wiring Diagrams: 049 J & 061 C Models

Wiring Diagrams: 060 J & 060 K Models

American Standard 4A7A6048N Specifications

General

Brand	American Standard
Model Number	4A7A6048N
Category	Heat Pump
Cooling Capacity (BTU/h)	48000 BTU/h
Heating Capacity (BTU/h)	48000 BTU/h
SEER Rating	16
Refrigerant	R-410A
Energy Star Certified	Yes
Voltage	208/230V
Phase	1
HSPF Rating	9.0
Compressor Type	Single Stage