American Standard 4A6V8048A1000A - 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.
October 2014
11-BC37D1-1D-EN
Variable Speed AccuLink™™ System
Heat Pumps and Air Conditioners
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Installer’s Guide

Summary

Installers Guide Overview

General Safety Warning

Critical safety instructions for personnel installing or servicing the equipment.

Outdoor Unit Safety Precautions

Hazardous Voltage and Power Disconnection

Warning regarding hazardous voltage and the necessity of disconnecting all power before servicing.

Refrigerant Oil and Handling Safety

Guidelines for safe handling of R-410A refrigerant, oil, and system pressures.

General Safety Cautions and Warnings

Electrical Safety and System Compatibility

High Voltage Electrical Hazard

Warning about 400VDC electrical hazard and waiting period after power disconnection.

Refrigerant Line Brazing Procedure

Preparation for Brazing Refrigerant Lines

Brazing Process and Heat Protection

Detailed steps for brazing, including using a wet rag for heat protection.

Refrigerant System Integrity Checks

Performing Refrigerant Line Leak Checks

Method for leak testing refrigerant lines using nitrogen and soapy solution.

Evacuating Refrigerant Lines and Indoor Coil

Procedure for evacuating the system to a specified micron level.

System Charging: Weigh-In Method

Weigh-In Method Overview and Application

Calculating Charge for New Installations

Step-by-step guide to calculate refrigerant charge for new installations.

Calculating Charge for Sealed-System Repairs

Steps to calculate refrigerant charge for sealed-system repairs.

Service Valve Operation

Opening the Gas Service Valve

Opening the Liquid Service Valve Safely

Instructions for safely opening the liquid service valve with caution.

Low Voltage Electrical Connections

Low Voltage Hook-up Diagram

High Voltage Electrical Connections

High Voltage Power Supply Requirements

High Voltage Disconnect and Grounding

System Start-Up Procedure

Pre-Start Up Checks and Preparation

Initial Power-Up and Test Mode Operation

System Charge Adjustment and Subcooling

Temperature Measurements for Charging

Subcooling Correction Calculations

Guide to determine final subcooling using line length, lift, and correction charts.

Refrigerant Charging Data and Charts

Subcool Charging Correction Charts

R-410 A Refrigerant Charging Chart

Charging the Unit and Verifying Performance

Attaining Proper Gage Pressure

Steps to adjust refrigerant level using the charging chart for correct pressures.

System Stabilization and Performance Check

Defrost Control Operation (Heat Pump Only)

Demand Defrost Principles

Forced Defrost Procedure via CDA

Steps to initiate and manage a forced defrost cycle through the CDA.

Final Installation Checkout Procedures

Comprehensive Installation Checklist

A checklist to confirm all installation steps and requirements have been met.

American Standard 4A6V8048A1000A Specifications

General

Type	Split System Air Conditioner
Model	4A6V8048A1000A
Cooling Capacity	4 tons
SEER Rating	16
HSPF	Not Applicable
Stages	Single Stage
Refrigerant	R-410A
Cooling Capacity (BTU)	48, 000 BTU
Voltage	208/230V
Phase	1
Sound Level (Outdoor Unit)	74 dB
Weight (Outdoor Unit)	260 lbs