Trane A4AH4 Series 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.
July 2022
1188--GGFF1166DD11--11AA--EENN
Convertible Air Handlers
1–1/2 — 5 Ton
A4AH4E24A1B60A
A4AH4E30A1B30A
A4AH4E36A1C30A
A4AH4E42B1C30A
A4AH4E48B1C30A
A4AH4E60B1C30A
The A4AH4 series air handler is designed for installation in a closet,
utility room, alcove, basement, crawlspace or attic. These versatile
units are applicable to air conditioning and heat pump
applications. Several models are available to meet the specific
requirements of the outdoor equipment. Field installed electric
resistance heaters are available.
Installer’s Guide

Trane A4AH4 Series Specifications

General

Brand	Trane
Model	A4AH4 Series
Category	Air Handlers
Language	English

Summary

Installer's Guide

Convertible Air Handler Series Overview

Introduction to the Convertible Air Handlers, 1-1/2 to 5 Ton, including model numbers and capabilities.

Initial Critical Safety Warning

A prominent safety warning at the start of the guide concerning installation and service hazards.

Safety Section Air Handlers

Electrical Safety Hazards and Precautions

Warnings and guidance on hazardous voltage, grounding, and live electrical components.

Refrigerant, Chemical, and Physical Hazards

Safety information regarding pressurized refrigerant, hazardous vapors, sharp edges, and coil pressurization.

Installation Instructions

Unpacking and Location Guidelines

Ductwork and Condensate Drain Setup

Thermostat and Sequence of Operation

Operational Checkout and Maintenance

Field Wiring

Heat Pump System Wiring Diagram

Diagram illustrating the field wiring connections for heat pump systems.

AC System Wiring Diagram

Diagram showing the field wiring connections for AC systems.

Electrical Data

Electrical Schematic and Component Legend

Schematic diagram and legend for understanding electrical components and connections.

Electrical Data Notes and Warnings

Coil Conversion Instructions

Downflow Coil Conversion Procedure

Horizontal Right Coil Conversion Procedure

Checkout Procedures

Final Installation System Checks Checklist

A comprehensive checklist for verifying all installation requirements are met.

System Operation and Owner Guidance

Procedures for confirming system functionality and instructing the owner on usage.