Trane 4TTR3 - User Manual

18-AC79D1-10E-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. Some of the benefits of
installing approved matched indoor and outdoor split systems are maximum efficiency, optimum performance and the best overall
system reliability.
4TTR3
Table of Contents
Section 1. Safety ..................................................................................... 2
Section 2. Unit Location Considerations ............................................. 3
Section 3. Unit Preparation .................................................................... 4
Section 4. Setting the Unit ..................................................................... 4
Section 5. Refrigerant Line Considerations ......................................... 4
Section 6. Refrigerant Line Routing ..................................................... 5
Section 7. Refrigerant Line Brazing ...................................................... 7
Section 8. Refrigerant Line Leak Check ............................................... 7
Section 9. Evacuation ............................................................................ 8
Section 10. Service Valves .................................................................... 8
Section 11. Electrical - Low Voltage ..................................................... 9
Section 12. Electrical - High Voltage .................................................. 10
Section 13. Start Up .............................................................................. 11
Section 14. System Charge Adjustment ............................................. 11
Section 15. Checkout Procedures ...................................................... 16
Section 16. Refrigerant Circuits (Reference only) ............................. 16
Section 17. Wiring Diagrams ............................................................... 17
Section 18. Pressure Curves ............................................................... 21
Installation and Operation Manual

Summary

Safety Precautions and Warnings

General Safety Warnings and Cautions

Covers electrical safety, refrigerant handling, and component temperature hazards.

Refrigerant Line Considerations

Refrigerant Line Brazing Procedure

Steps for Brazing Refrigerant Lines

Detailed instructions for properly brazing refrigerant lines with nitrogen purge.

Refrigerant Line Leak Detection

Procedure for Checking Refrigerant Leaks

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

System Evacuation Process

Evacuating Refrigerant Lines and Coil

Steps to evacuate the system to a specific micron level for moisture removal.

Service Valve Operation

Opening the Gas Service Valve

Opening the Liquid Service Valve

Low Voltage Electrical Connections

Low Voltage Hook-up Diagrams

High Voltage Electrical Connections

High Voltage Power Supply Requirements

Guidelines for connecting the high voltage power supply, including safety warnings.

System Start-Up Procedure

System Start-Up Steps

Sequential steps to power up and initiate system operation after installation.

System Charge Adjustment and Verification

Temperature Measurement for Charging

Subcooling Charging in Cooling (Above 55° F)

Method for charging refrigerant based on subcooling for outdoor temps above 55°F.

Subcooling Charging Below 55° F (Heating Only)

Procedure for charging refrigerant using the weigh-in method for low outdoor temperatures.

Final Checkout and Operational Procedures

System Operational Checklist

Wiring Diagrams for Various Models

Pressure Curves for Performance Verification

Trane 4TTR3 Specifications

General

Brand	Trane
Model	4TTR3
Category	Air Conditioner
Language	English