Trane 4TTM3030A User Manual

18-AC78D1-6
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 information
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 in-
stallation. 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 manufac-
turer’s split systems are A.H.R.I. rated only with TXV 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.
4TTM3018 through 4TTM3060
Installer’s Guide
Table of Contents
Section 1. Safety .................................................................................................... 2
Section 2. Unit Location Considerations .................................................. 3
Section 3. Unit Preparation .............................................................................. 5
Section 4. Setting the Unit ................................................................................ 5
Section 5. Refrigerant Line Considerations ............................................ 6
Section 6. Refrigerant Line Routing ............................................................ 7
Section 7. Refrigerant Line Brazing ............................................................. 8
Section 8. Refrigerant Line Leak Check .................................................. 10
Section 9. Evacuation ....................................................................................... 11
Section 10. Service Valves .............................................................................. 11
Section 11. Electrical - Low Voltage ........................................................... 12
Section 12. Electrical - High Voltage .......................................................... 14
Section 13. Start Up ........................................................................................... 15
Section 14. System Charge Adjustment.................................................. 16
Section 15. Checkout Procedures and Troubleshooting ................ 24
Section 16. Independent Charge Verification ....................................... 26

Trane 4TTM3030A Specifications

General

Model	4TTM3030A
Type	Air Conditioner
Cooling Capacity	2.5 Tons
Refrigerant	R-410A
Stages	Single Stage
Voltage	208/230 V
Sound Level	76 dB
Operating Ambient Temperature	Up to 115°F
HSPF	Not Applicable

Summary

Safety

Electrical Safety Precautions

Highlights hazards associated with live electrical components during installation and servicing.

Refrigerant System Safety

Details safety measures for R-410A refrigerant, high pressures, and POE oil handling.

Brazing and Compressor Safety

Provides cautions regarding brazing joints and hot compressor dome temperatures.

Liquid Line Service Valve Operation

Emphasizes extreme caution when opening the liquid line service valve to prevent injury.

Refrigerant Line Considerations

Line and Valve Connection Sizes

Refrigerant Line Insulation

Reuse Existing Refrigerant Lines

Refrigerant Line Brazing

Brazing Refrigerant Lines

Refrigerant Line Leak Check

Performing Leak Checks

Evacuation

Evacuating Lines and Coil

Electrical - Low Voltage

Electrical - High Voltage

High Voltage Power Supply Requirements

High Voltage Disconnect Switch Installation

High Voltage Grounding

System Start Up

System Start Up Procedure

System Charge Adjustment

Charge Adjustment Procedure Overview

Details the new charging procedure using subcooling or pressure and ambient temperature.

Using Charging Tables and Examples

Explains how to use charging tables and provides an example for determining refrigerant levels.

Refrigerant Adjustment and Verification

Covers determining adjustments, adding/removing charge, and final verification steps.

Checkout Procedures and Troubleshooting

Operational and Checkout Procedures

Troubleshooting System Faults

Independent Charge Verification

Performing Independent Charge Verification

Steps to verify the system charge by comparing measured and target subcooling values.