American Standard 4A6C4048A4000A User Manual

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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 precautions in the
literature and on the tags, stickers, and labels that are attached to the equipment.
November 2016
11-BC41D1-1A-EN
Split System Heat Pump
3–Phase, 230V
3–Phase, 460V
223300VV MMOODDEELLSS
4A6C4036A3000A
4A6C4042A3000A
4A6C4048A3000A
4A6C4060A3000A
446600VV MMOODDEELLSS
4A6C4036A4000A
4A6C4042A4000A
4A6C4048A4000A
4A6C4060A4000A
NNoottee:: “Graphics in this document are for representation
only. Actual model may differ in appearance.”
Installer’s Guide

American Standard 4A6C4048A4000A Specifications

General

Brand	American Standard
Model	4A6C4048A4000A
Category	Heat Pump
Language	English

Summary

Installer's Guide

Initial Safety Warning

General safety warning about qualified personnel and potential hazards during installation.

Safety Precautions

Hazardous Voltage Warning

Warning about severe injury or death from electrical shock. Emphasizes disconnecting power.

Refrigerant Oil Handling

Details on R-410A refrigerant pressures and POE oil's hygroscopic nature.

Refrigerant Pressure Hazard

Caution about high pressure refrigerant and the need to relieve pressure before opening.

Grounding Requirements

Service Valve Operation Warning

Warning about abrupt system charge release when operating service valves.

Brazing Requirements

Refrigerant Line Brazing

Brazing Preparation

Initial Brazing Steps

Brazing Service Valves

Instructions for brazing refrigerant lines to service valves and filter driers.

Post-Brazing Procedures

Refrigerant Line Leak Check and Evacuation

Leak Check Procedure

Pressurizing lines with nitrogen and checking for leaks with a soapy solution.

System Evacuation Procedure

Evacuating the system to below 350 microns and verifying the vacuum.

Service Valves

Opening Gas Service Valve

Step-by-step guide to opening the gas service valve correctly.

Opening Liquid Service Valve

Detailed instructions for opening the liquid service valve carefully.

System Start Up

System Charge Adjustment

Temperature Measurements for Charging

Subcooling Charging Corrections

Worksheet to calculate refrigerant charge adjustments using line length and lift.

Subcooling Charging Procedure

Recommended Charging Method

Subcooling is the recommended method for charging above 55°F ambient.

System Stabilization and Measurements

Determine Design Subcooling and Adjust

Locate design subcooling from nameplate and adjust refrigerant per charts.

Charging the Unit

Proper Gage Pressure Adjustment

Adjusting refrigerant to match liquid gage pressure with the charging chart.

System Stabilization and Gauge Removal

Performance Verification

Using system pressure curves to verify typical unit performance.

System Information Recording

Checkout Procedures

Electrical and Mechanical Checks

Leak, Evacuation, and Panel Checks

System Operation and Handover