Trane 4TTA4 User Manual

18-AC108D1-1D-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.
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 only with TXV/EEV indoor systems. Some of the benefits of installing approved matched indoor and out-
door split systems are maximum efficiency, optimum performance and the best overall system reliability.
4TTA4
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 ..................................................... 8
Section 7. Refrigerant Line Brazing ...................................................... 9
Section 8. Refrigerant Line Leak Check ............................................. 11
Section 9. Evacuation .......................................................................... 12
Section 10. Service Valves .................................................................. 12
Section 11. Electrical - Low Voltage ................................................... 13
Section 12. Electrical - High Voltage .................................................. 15
Section 13. Start Up .............................................................................. 16
Section 14. System Charge Adjustment ............................................. 17
Section 15. Checkout Procedures ...................................................... 23
Section 16. Refrigerant Circuits .......................................................... 23
Section 17. Wiring Diagrams ............................................................... 25
Section 18. Pressure Curves ............................................................... 29
Condensing Units
Installation and Operation Manual

Trane 4TTA4 Specifications

General

Refrigerant	R-410A
Voltage (V)	208/230
Phase	1
Type	Heat Pump
Stages	Single-Stage

Summary

Safety

Unit Location Considerations

Unit Dimensions and Weight

Provides physical dimensions and weight for various unit models.

Refrigerant Piping Limits

Specifies maximum total and vertical refrigerant line lengths allowed.

Suggested Locations for Best Reliability

Advises on optimal placement to ensure unit performance and longevity.

Cold Climate Considerations

Provides precautions for installing units in cold weather environments.

Coastal Considerations

Recommends protective kits for units installed near saltwater.

Unit Preparation and Refrigerant Line Installation

Prepare The Unit For Installation

Outlines essential steps for inspecting and preparing the unit before installation.

Setting the Unit

Details requirements for properly setting the outdoor unit on its support pad.

Refrigerant Line Considerations

Covers line sizes, factory charge, insulation, and reusing lines.

Refrigerant Line Routing

Details proper methods for routing refrigerant lines to prevent noise and vibration.

Refrigerant Line Brazing

Step-by-step guide for securely brazing refrigerant lines.

System Checks and Service Procedures

Refrigerant Line Leak Check

Procedure for detecting leaks in the refrigerant lines using nitrogen and soap.

System Evacuation

Explains how to evacuate the system to remove moisture and non-condensables.

Service Valves Operation

Instructions on how to safely open and close service valves.

Electrical System Installation

Low Voltage Electrical Connections

Covers low voltage wiring requirements and diagrams.

High Voltage Electrical Connections

Details high voltage power supply, disconnect, and grounding.

System Start-Up and Charge Adjustment

System Start Up

Step-by-step procedure for initial system start-up after installation.

System Charge Adjustment (Above 55° F)

Procedure for charging using subcooling method in warmer temperatures.

System Charge Adjustment (Below 55° F)

Recommended weighing-in method for charging at temperatures below 55°F.

Final Procedures, Diagrams, and Performance

Checkout Procedures

Final operational and system checkout checklist.

Refrigerant Circuits Diagrams

Illustrates refrigerant flow diagrams for different unit capacities.

Wiring Diagrams

Wiring diagrams for specific unit models and configurations.

Liquid Pressure Curves

Charts for verifying system performance based on liquid pressure and temperature.

Suction Pressure Curves

Charts for verifying system performance based on suction pressure and temperature.

Liquid Pressure Curves (Additional Models)

Displays liquid pressure vs. outdoor temp for other models.

Suction Pressure Curves (Additional Models)

Shows suction pressure vs. outdoor temp for other models.