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American Standard YSC120A User Manual

American Standard YSC120A
52 pages
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Installation
Operation and
Maintenance
June 2008 RT-SVX21F-EN
Model Numbers:
YSC036A - YSC120A YHC036E - YHC060E
YHC033A - YHC120A YSC072 - YSC120E
YSC036E - YSC060E
Packaged Gas/Electric
3 - 10 Ton
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American Standard YSC120A Specifications

General IconGeneral
BrandAmerican Standard
ModelYSC120A
CategoryAir Conditioner
LanguageEnglish

Summary

Preface and Warnings

Hazard Identification

Details warnings and cautions for potential hazards like death, injury, or equipment damage.

Installation Procedures

Site Preparation

Covers foundation requirements for horizontal units and roof curb installation for proper support.

Electrical and Control Wiring

Guides on power supply, field wiring, control transformers, and low voltage wiring for various components.

Unit Configuration and Conversion

Provides instructions for horizontal discharge conversion, TCO-1 limits, and gas heat requirements.

Pre-Start Checks

Voltage Imbalance

Explains voltage imbalance requirements for three-phase power to prevent motor damage.

Test Modes

Describes three methods (Step, Resistance, Auto) for testing component operation.

Start-Up Procedures

Verifying Air Flow

Guides on checking and verifying proper air flow for direct drive and belt drive fans.

Economizer Start-Up

Provides steps for starting up the economizer control for ReliaTel and Electro Mechanical systems.

Compressor Start-Up

Details procedures for starting compressors, checking rotation, and monitoring operating pressures.

Maintenance Procedures

Trouble Shooting Guide

ReliaTel Control Diagnostics

Information on checking RTRM status, LED indicators, and troubleshooting system failures.

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