Trane 4TTM3018 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 4TTM3018 Specifications

General

Model	4TTM3018
Type	Air Conditioner
Refrigerant	R-410A
Phase	1
Frequency (Hz)	60
Voltage	208/230V
Stages	Single Stage
HSPF	Not Available

Summary

Safety

General Safety Warnings

Critical safety warnings regarding electrical components, refrigerant, and handling.

Unit Location Considerations

Unit Dimensions and Weight

Details unit dimensions and weight for specific models.

Refrigerant Piping Limits

Specifies maximum refrigerant line length and vertical limits.

Unit Preparation

Prepare Unit for Installation

Steps to prepare the unit for installation, including damage checks.

Setting the Unit

Pad Installation Guidelines

Guidelines for installing the unit on a support pad.

Refrigerant Line Considerations

Line and Service Valve Connection Sizes

Table detailing refrigerant line and service valve connection sizes by model.

Required Refrigerant Line Length

Instructions to determine the required refrigerant line length.

Refrigerant Line Insulation

Emphasizes insulation for the vapor line and avoiding contact between lines.

Reuse Existing Refrigerant Lines

Precautions for using existing refrigerant lines, ensuring proper size and condition.

Refrigerant Line Routing

Routing Precautions

Precautions to prevent noise from vibration transmission and proper line routing.

Refrigerant Line Brazing

Brazing Refrigerant Lines

Step-by-step instructions for brazing refrigerant lines.

Refrigerant Line Leak Check

Performing Leak Checks

Procedure for checking refrigerant lines for leaks using pressure and soapy solution.

Evacuation

Evacuating Refrigerant Lines and Indoor Coil

Steps for evacuating the system to a specific micron level.

Service Valves

Opening Service Valves

Detailed steps for safely opening the unit's service valves.

Electrical - Low Voltage

Low Voltage Maximum Wire Length

Table showing maximum allowed wire lengths for low voltage connections.

Low Voltage Hook-up Diagrams

Diagrams illustrating low voltage wiring for different indoor units.

Electrical - High Voltage

High Voltage Power Supply

Information on high voltage power supply requirements and safety.

High Voltage Disconnect Switch

Instructions for installing a high voltage disconnect switch.

High Voltage Grounding

Requirements for grounding the outdoor unit.

System Start Up

System Start Up Procedure

Step-by-step guide to starting up the installed system.

System Charge Adjustment

Charge Adjustment Procedure

New procedure for charging the system using subcooling or pressure.

Checkout and Troubleshooting

Operational and Checkout Procedures

Final inspection and operational checks for proper system performance.

Troubleshooting System Faults

System faults and their primary and secondary causes.

Independent Charge Verification

Charge Verification Procedure

Steps to verify system charge against tolerance ranges.