Trane A4AC4018A1000A User Manual

88-A4AC4001-1B-EN
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.
Condensing Units
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 with Piston/TXV/EEV indoor systems. Some of the benefits of installing approved matched indoor and
outdoor split systems are maximum efficiency, optimum performance and the best overall system reliability.
Installer’s Guide
Models
A4AC4018A1000A
A4AC4023A1000A
A4AC4024A1000A
A4AC4030A1000A
A4AC4036A1000A
A4AC4042A1000A
A4AC4048A1000A
A4AC4060A1000A
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 train-
ing. Improperly installed, adjusted or altered equipment by an unqualified person could result in death or serious in-
jury. When working on the equipment, observe all precautions in the literature and on the tags, stickers, and labels
that are attached to the equipment.
WARNING
s
!

Trane A4AC4018A1000A Specifications

General

Brand	Trane
Model	A4AC4018A1000A
Category	Heat Pump
Language	English

Summary

Section 1. Safety

Section 2. Unit Location Considerations

2.1 Unit Dimensions and Weight

Table 2.1 lists unit dimensions and weight, essential for placement planning.

2.2 Refrigerant Piping Limits

Details maximum refrigerant line length and vertical change for optimal system performance.

2.3 Suggested Locations for Best Reliability

Provides guidance on unit placement to ensure adequate airflow and minimize noise.

Section 3. Unit Preparation

3.1 Prepare The Unit For Installation

First step in preparation involves checking the unit for any shipping damage.

Section 4. Setting the Unit

4.1 Pad Installation

Guidelines for installing the unit on a support pad, ensuring levelness and drainage.

Section 5. Refrigerant Line Considerations

5.1 Refrigerant Line and Service Valve Connection Sizes

Provides a table detailing line sizes and service valve connection sizes for various models.

5.2 Factory Charge

Information on the factory refrigerant charge and how to verify proper system charge.

5.3 Required Refrigerant Line Length

Instructions to determine required line length and lift for system configuration.

5.4 Refrigerant Line Insulation

Emphasizes the importance of insulating the vapor line and preventing contact.

5.5 Reuse Existing Refrigerant Lines

Precautions for using existing refrigerant lines in retrofit applications.

Section 6. Refrigerant Line Routing

6.1 Precautions

Key precautions for routing refrigerant lines to prevent noise and ensure proper installation.

Section 7. Refrigerant Line Brazing

7.1 Braze The Refrigerant Lines

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

Section 8. Refrigerant Line Leak Check

8.1 Check For Leaks

Procedure for pressurizing lines with nitrogen and checking for leaks using soapy solution.

Section 9. Evacuation

9.1 Evacuate the Refrigerant Lines and Indoor Coil

Instructions on how to evacuate the system to a specific micron level for proper operation.

Section 10. Service Valves

10.1 Open the Gas Service Valve

Steps for safely opening the gas service valve to the fully open position.

10.2 Open the Liquid Service Valve

Detailed procedure and warning for opening the liquid line service valve.

Section 11. Electrical – Low Voltage

11.1 Low Voltage Maximum Wire Length

Table specifying maximum wire lengths for low voltage wiring based on gauge size.

11.2 Low Voltage Hook-up Diagrams

Wiring diagrams for connecting thermostats, air handlers, and outdoor units for Heat Pump and AC systems.

Section 12. Electrical – High Voltage

12.1 High Voltage Power Supply

Information on high voltage power supply requirements and compliance with codes.

12.2 High Voltage Disconnect Switch

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

12.3 High Voltage Ground

Requirement to ground the outdoor unit according to national, state, and local codes.

Section 13. Start Up

13.1 System Start Up

Step-by-step guide for powering up the system after installation is complete.

Section 14. System Charge Adjustment (Systems can be rated with TXV, EEV or Piston)

14.1 Temperature Measurements

Instructions for measuring outdoor and indoor temperatures for system charging.

14.2 Subcooling Charging in Cooling (Above 55º F Outdoor Temp.)

Method for subcooling charging in cooling mode for systems with TXV or EEV.

Section 15. Checkout Procedures and Troubleshooting

15.1 Operational And Checkout Procedures

List of procedures to perform after installation to ensure proper operation and safety.

15.2 Troubleshooting

Flowchart for diagnosing and resolving common compressor start-up issues.

Section 16. Refrigerant Circuits

1 1/2-Ton Units

Diagram illustrating refrigerant flow and components for 1 1/2-Ton units.

2, 2 1/2 & 3-Ton Units

Diagram of refrigerant flow and components for 2, 2 1/2, and 3-Ton units.

3 1/2 & 4-Ton Units

Diagram of refrigerant flow and components for 3 1/2 and 4-Ton units.

5-Ton Units

Diagram illustrating refrigerant flow and components for 5-Ton units.