Trane 4TTR4018-060 - User Manual

18-AC51D1-10E-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.
4TTR4018 – 060
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 .................................................. 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 ............................................................... 26
Section 18. Pressure Curves ............................................................... 36
Installation and Operation Manual

Trane 4TTR4018-060 Specifications

General

Type	Air Conditioner
Model	4TTR4018-060
SEER Rating	Up to 14.5 SEER
Refrigerant	R-410A
Phase	1
Cooling Capacity	18, 000 BTU
Weight	Varies by model, see product brochure
Voltage	208/230V

Summary

Safety Warnings and Precautions

Live Electrical Components

Critical warnings about live electrical components and proper handling during installation and servicing.

R-410 A Refrigerant Handling

Information on R-410A pressures, required equipment, and oil handling for safe operation.

General Cautions

Cautions regarding hot surfaces, brazing, and potential chemical exposure.

Unit Location and Specifications

Unit Dimensions and Weight

Table detailing physical dimensions and weight for various condensing unit models.

Unit Location Requirements

Refrigerant Piping Limits

Defines maximum refrigerant line length and vertical change limits for optimal performance.

Suggested Placement and Coastal Considerations

Guidance on optimal placement and requirements for coastal environments.

Unit Preparation and Setting

Unit Preparation Steps

Steps for checking unit for damage and removing it from packaging.

Pad Installation Guidelines

Guidelines for installing the unit on a support pad, ensuring stability and drainage.

Refrigerant Line Specifications

Line and Valve Connection Sizes

Details line sizes and service valve connection sizes for specific model numbers.

Factory Charge and Line Length Adders

Information on factory charge and adjustments for line length and lift.

Refrigerant Line Installation Details

Refrigerant Line Insulation and Reuse

Emphasizes insulating lines and precautions for reusing existing refrigerant lines.

Refrigerant Line Routing Precautions

Guidelines to prevent noise transmission via vibration and ensure proper line support.

Refrigerant Line Brazing

Brazing Preparation and Procedure

Detailed procedure for preparing and brazing refrigerant lines, including purging.

Leak Checking and Evacuation

Refrigerant Line Leak Check

Procedure for pressurizing lines with nitrogen and checking for leaks.

System Evacuation and Service Valves

System Evacuation Procedure

Steps to evacuate refrigerant lines and indoor coil to a specified micron level.

Service Valve Operation

Instructions for safely opening gas and liquid service valves after evacuation.

Low Voltage Electrical

Low Voltage Wiring Specifications

Table specifying maximum wire lengths for low voltage connections based on wire gauge.

Low Voltage Wiring Diagrams

Low Voltage Hook-up Diagrams

Wiring schematics for connecting thermostats and air handlers to the outdoor unit.

High Voltage Electrical

High Voltage Power Supply Requirements

Guidelines for high voltage power supply, including nameplate agreement and code compliance.

High Voltage Grounding

Requirement to properly ground the outdoor unit according to local codes.

System Start-Up

System Start-Up Procedure

Step-by-step instructions for powering on and initiating the HVAC system.

System Charge Adjustment

Temperature Measurements for Charging

Guidance on measuring temperatures to select the correct charging method.

Subcooling Charging Method

Detailed charts and procedures for adjusting refrigerant charge using subcooling.

Superheat Charging and System Recording

Fixed Orifice Superheat Charging

Table for determining superheat adjustments for systems with fixed orifices.

System Information Recording

Encourages recording system pressures and temperatures after charging for reference.

Final Checks and Refrigerant Circuits

Operational and Checkout Checklist

A comprehensive list of checks for final system inspection and operation verification.

Refrigerant Circuit Diagrams

Schematic diagrams illustrating refrigerant flow for various model series.

Refrigerant Circuit Diagrams by Model Series

042 N & 048 N, 049 N & 060 N Models

Refrigerant flow schematics for specific model series.

Refrigerant Circuit Diagrams for L Models

018 L & 060 L Models

Refrigerant flow schematics for specific model series.

Wiring Diagrams

Wiring Diagrams for N Models

Detailed wiring diagrams for specific N model series.

Wiring Diagrams for 030 N, 036 N & 048 N Models

Wiring Diagrams for 030 N, 036 N & 048 N

Detailed wiring diagrams for specific N model series.

Wiring Diagrams for 060 N Models

Wiring Diagrams for 060 N

Detailed wiring diagrams for specific N model series.

Wiring Diagrams for L Models

Wiring Diagrams for 018 L-048 L Models

Detailed wiring diagrams for specific L model series.

Wiring Diagrams for 060 L Models

Wiring Diagrams for 060 L

Detailed wiring diagrams for specific L model series.

Pressure Curves

4 TTR4018 N1 Pressure Curves

Performance curves for liquid and suction pressure vs. outdoor temperature.

4 TTR4019 N1 Pressure Curves

Performance curves for liquid and suction pressure vs. outdoor temperature.

Pressure Curves for N Models

4 TTR4024 N1-4 TTR4042 N1 Curves

Performance curves for liquid and suction pressure vs. outdoor temperature.

4 TTR4048 N1-4 TTR4060 N1 Curves

Performance curves for liquid and suction pressure vs. outdoor temperature.

Pressure Curves for L Models

4 TTR4018 L1 Curves

Performance curves for liquid and suction pressure vs. outdoor temperature.

4 TTR4024 L1-4 TTR4048 L1 Curves

Performance curves for liquid and suction pressure vs. outdoor temperature.

Pressure Curves for 060 L Model

4 TTR4060 L1 Curves

Performance curves for liquid and suction pressure vs. outdoor temperature.