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Trane 4TTX5042A1000A User Manual

Trane 4TTX5042A1000A
24 pages
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18-AC74D1-4
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. All of the manufacture’s split
systems are A.H.R.I. rated only with TXV/EEV 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.
4TTX5018A–060A, 049E
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 .................................................... 13
Section 12. Electrical - High Voltage ................................................... 16
Section 13. Start Up .............................................................................. 17
Section 14. System Charge Adjustment ............................................. 18
Section 15. Checkout Procedures and Troubleshooting ................... 22
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Trane 4TTX5042A1000A Specifications

General IconGeneral
BrandTrane
Model4TTX5042A1000A
CategoryAir Conditioner
LanguageEnglish

Summary

Safety Information

Safety Warnings and Precautions

Live Electrical Components Hazard

Warning regarding hazards associated with live electrical components during installation and servicing.

R-410A Refrigerant and POE Oil Handling Safety

Guidelines for safely handling R-410A refrigerant and POE oil, including pressure and moisture sensitivity.

Liquid Line Service Valve Operation Safety

Cautionary steps for opening the liquid line service valve to prevent abrupt refrigerant release.

Existing Refrigerant Lines Brazing Requirement

Requirement to braze, not solder, existing refrigerant lines for safe and reliable connections.

Compressor Dome Temperature Warning

Warning about hot compressor dome temperatures that can cause burns.

Unit Location Considerations

Unit Dimensions and Weight Specifications

Table detailing the physical dimensions and estimated weights of various condensing unit models.

Refrigerant Piping Length and Vertical Limits

Maximum allowable lengths and vertical changes for refrigerant lines between indoor and outdoor units.

Optimal Unit Placement for Reliability

Recommendations for unit placement to ensure adequate airflow, reduce noise, and prevent runoff.

Coastal Installation Considerations

Guidance for installing units within one mile of saltwater, requiring corrosion protection.

Unit Preparation

Initial Unit Inspection and Preparation Steps

Steps for inspecting the unit for damage and removing it from the pallet before installation.

Setting the Unit

Support Pad Installation Requirements

Criteria for installing a support pad, including size, levelness, separation, and drainage.

Refrigerant Line Considerations

Line and Valve Connection Sizes

Table specifying vapor and liquid line sizes and service valve connection sizes for different models.

Factory Refrigerant Charge Details

Information on the factory charge amount and when adjustments are necessary.

Required Refrigerant Line Length and Lift

Instructions to determine total line length and vertical change for system charge adjustment.

Refrigerant Line Insulation Guidelines

Importance of insulating the vapor line and preventing direct metal contact between lines.

Precautions for Reusing Existing Lines

Guidelines for ensuring existing refrigerant lines and coils are suitable for reuse in retrofit applications.

Refrigerant Line Routing

Routing Precautions and Isolation

Measures to prevent noise transmission and ensure proper line set support and isolation.

Refrigerant Line Brazing

Procedure for Brazing Refrigerant Lines

Step-by-step instructions for preparing and brazing refrigerant lines to service valves using nitrogen purge.

Refrigerant Line Leak Check

Procedure for Checking Refrigerant Leaks

Steps to pressurize the system with nitrogen and check for leaks using a soapy solution.

Evacuation Procedure

Evacuating Refrigerant Lines and Indoor Coil

Instructions for evacuating the system to a specific micron level to remove air and moisture.

Service Valves

Opening the Gas Service Valve

Procedure for safely opening the gas service valve after leak check and evacuation.

Opening the Liquid Service Valve

Detailed steps and warnings for opening the liquid service valve.

Electrical - Low Voltage Wiring

Low Voltage Maximum Wire Lengths

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

Low Voltage Hook-up Diagrams

Wiring diagrams for connecting air handler and variable speed furnace to the air conditioner.

Communicating Indoor Unit Hook-up Diagrams

Wiring diagrams for communicating indoor units with 24V control and in comm. mode.

Specific Air Handler Hook-up Diagrams

Wiring diagrams for AM7 and GAM5 air handler models.

Electrical - High Voltage Wiring

High Voltage Power Supply Requirements

Information on matching power supply to the equipment nameplate and compliance with codes.

High Voltage Disconnect Switch Installation

Requirement to install a separate disconnect switch for high voltage connections.

High Voltage Grounding Requirements

Guidance on grounding the outdoor unit according to national, state, and local codes.

System Start Up

Procedure for System Start Up

Step-by-step guide for initiating system operation after installation and checks are complete.

System Charge Adjustment

Temperature Measurements for Charging

Guidance on measuring outdoor and indoor temperatures for accurate system charging.

Subcooling Charging Method in Cooling Mode

Detailed procedure for adjusting system charge using subcooling measurements above 55°F outdoor temp.

Checkout Procedures and Final Inspection

Operational and Checkout Procedures List

A checklist of final operational checks and inspections to ensure proper system performance and safety.

Troubleshooting System Faults

A chart identifying potential system faults and their primary and secondary causes.

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