Trane A4HP4024A1000A User Manual

88-A4HP4001-1B-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.
Heat Pumps
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
A4HP4017A1000A
A4HP4018A1000A
A4HP4023A1000A
A4HP4024A1000A
A4HP4030A1000A
A4HP4036A1000A
A4HP4042A1000A
A4HP4048A1000A
A4HP4060A1000A
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 A4HP4024A1000A Specifications

General

Model Number	A4HP4024A1000A
Category	Heat Pump
Cooling Capacity (BTU/h)	24000
Heating Capacity (BTU/h)	24000
SEER Rating	Up to 14
HSPF Rating	Up to 8.2
Voltage	208/230
Phase	1
Refrigerant Type	R-410A
Compressor Type	Scroll

Summary

Core Safety Procedures

General Safety Warnings and Precautions

Essential safety information regarding electrical components, refrigerant, and operational hazards.

R-410A Refrigerant Handling and Safety

Guidance on handling R-410A refrigerant, including pressure, oil, and system integrity.

Refrigerant Line Installation Details

Refrigerant Line and Valve Connection Sizes

Refrigerant Line Brazing Procedure

Brazing Refrigerant Lines to Valves

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

Refrigerant Line Leak Detection

Leak Detection Procedure

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

System Evacuation Process

Evacuating Refrigerant Lines and Coil

Steps for achieving the required vacuum level for the refrigerant system.

Service Valve Operation

Opening Gas Service Valve

Opening Liquid Service Valve

Low Voltage Electrical Connections

Low Voltage Wiring Length Limits

Low Voltage Wiring Diagrams

Defrost Control System Operation

High Voltage Electrical Connections

High Voltage Power Supply Requirements

System Startup Procedure

System Initial Start Up

System Charge Adjustment Methods

Temperature Measurements for Charging

Instructions for taking temperature readings necessary for system charging.

Subcooling Charging (Above 55°F Outdoor)

Detailed method for charging systems using TXV/EEV in cooling mode above 55°F.

Subcooling Charging (Below 55°F Outdoor)

Guidance for charging systems in heating mode below 55°F using the weigh-in method.

Calculating Charge via Weigh-In Method

Steps for determining the correct refrigerant charge based on line length.

Final Checks and Troubleshooting

Operational and Checkout Procedures

System Troubleshooting Guide