Trane A5AC5018A User Manual

Installation and Operation Manual
August 2023
88-A5AC5001-1A-EN
SAFETY WARNING
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 pre-
cautions in the literature and on the tags, stickers, and labels that are attached to the equipment.
Models
A5AC5018A
A5AC5024A
A5AC5030A
A5AC5036A
A5AC5042A
A5AC5048A
A5AC5060A
Note: “Graphics in this document are for representation only.
Actual model may differ in appearance.”
Condensing Units
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. All of the manufacture’s split
systems are AHRI rated only with TXV/EEV indoor systems. Some of the benefits of installing approved matched indoor and out-
door split systems are maximum efficiency, optimum performance and the best overall system reliability.

Trane A5AC5018A Specifications

General

Model	A5AC5018A
Type	Split System Air Conditioner
Refrigerant	R-410A
Voltage	208/230V
Phase	1
Sound Level	72 dB
HSPF Rating	Not Applicable
Compressor Type	Single Stage
Stages	Single Stage
Cooling Capacity	18, 000 BTU/H

Summary

Safety Warnings and Precautions

Safety Warnings and Precautions

Covers hazardous voltage, refrigerant, hot surfaces, fire risk, brazing, and ventilation hazards.

Unit Location and Placement Guidelines

Unit Dimensions and Weight Specifications

Details physical specifications and weight for outdoor units.

Refrigerant Piping Length and Lift Limits

Specifies maximum total length and vertical change for refrigerant lines.

Recommended Location Criteria for Reliability

Guidance on optimal placement for performance and service access.

Cold Climate Installation Considerations

Precautions for units installed in areas with snow and freezing temperatures.

Unit Preparation for Installation

Initial Unit Inspection and Preparation

Steps for initial unit inspection and readiness for installation.

Outdoor Unit Installation and Pad Requirements

Outdoor Unit Pad Installation Guidelines

Guidelines for selecting and preparing the unit support pad.

Refrigerant Line Installation Details

Refrigerant Line and Service Valve Sizes

Table of line sizes and valve connections for different models.

Factory Refrigerant Charge Details

Information on the initial refrigerant charge from the factory.

Required Refrigerant Line Lengths

Specifies maximum total length and vertical change for refrigerant lines.

Refrigerant Line Insulation Requirements

Guidelines for insulating the vapor and liquid refrigerant lines.

Reusing Existing Refrigerant Lines

Precautions for using existing refrigerant lines in retrofit applications.

Refrigerant Line Routing and Isolation

Precautions for Refrigerant Line Routing

Guidelines for secure and noise-free installation of refrigerant lines.

Refrigerant Line Brazing Procedure

Procedure for Brazing Refrigerant Lines

Step-by-step instructions for brazing refrigerant lines to service valves.

Refrigerant Line Leak Detection

Steps for Refrigerant Line Leak Checking

Procedures for pressure testing and detecting leaks in refrigerant lines.

System Evacuation and Service Procedures

Evacuating Refrigerant Lines and Indoor Coil

Steps for achieving and verifying system vacuum before charging.

General Servicing Procedures

Guidelines for safe refrigerant recovery, handling, and system servicing.

Service Valve Operation Instructions

Opening the Gas Service Valve

Procedure for correctly opening the gas service valve.

Opening the Liquid Service Valve

Procedure for correctly opening the liquid service valve.

Low Voltage Electrical Connections

Low Voltage Maximum Wire Length Chart

Table specifying maximum wire lengths based on wire gauge.

Low Voltage Hook-up Diagrams

Wiring diagrams for connecting thermostat, air handler, and outdoor unit.

High Voltage Electrical Safety and Installation

High Voltage Power Supply Safety Warning

Warning about hazards of working with live electrical components.

High Voltage Disconnect Switch Installation

Requirement to install a separate disconnect switch at the outdoor unit.

High Voltage Grounding Requirements

Procedure for grounding the outdoor unit according to codes.

System Startup Procedure

System Startup Sequence

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

System Refrigerant Charge Adjustment

Temperature Measurements for Charging

Measuring outdoor and indoor temperatures for charging.

Subcooling Charging Method in Cooling

Method for charging systems using TXV/EEV based on subcooling.

Charging the Unit Procedure

Detailed steps for adjusting system refrigerant charge using subcooling.

Weigh-In Method for Calculating Refrigerant Charge

Procedure for calculating and adding refrigerant by weight.

Final System Checkout and Operation

Operational and Checkout Procedure Checklist

Checklist for final system checks and operational verification.

Refrigeration Circuit Diagrams by Model

Refrigeration Circuits for 018, 030, 042 Models

Diagrams illustrating the refrigeration flow for specific model series.

Refrigeration Circuits for 024 & 036 Models

Diagrams illustrating the refrigeration flow for specific model series.

Refrigeration Circuits for 048 & 060 Models

Diagrams illustrating the refrigeration flow for specific model series.

Electrical Wiring Schematics by Model

Wiring Diagrams for 018 - 048 Models

Electrical wiring schematics for models 018 through 048.

Wiring Diagrams for 060 Models

Electrical wiring schematics for model 060.

Performance Pressure Curves by Model

Pressure Curves for A5AC5018A1 Model

Displays pressure curves for model A5AC5018A1 for cooling performance.

Pressure Curves for A5AC5024A1 to A5AC5048A1 Models

Displays pressure curves for multiple models including A5AC5024A1, A5AC5030A1, etc.

Pressure Curves for A5AC5060A1 Model

Displays pressure curves for model A5AC5060A1.