Trane 5TWV8X24A1000A - User Manual

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Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, and air-conditioning

equipment can be hazardous and requires specific knowledge and training. Improperly installed, adjusted or altered equipment by an unqualified person

could result in death or serious injury. When working on the equipment, observe all precautions in the literature and on the tags, stickers, and labels that

are attached to the equipment.

January 2024

1188--BBCC111166DD11--11BB--EENN

TRANE Link Variable Speed Heat Pumps and Air

Conditioners

5TWV8X24A1000A

5TWV8X36A1000A

5TWV8X48A1000A

5TWV8X60A1000A

5TTV8X24A1000A

5TTV8X36A1000A

5TTV8X48A1000A

5TTV8X60A1000A

The Diagnostics Mobile App is available by scanning a QR

code located inside this unit or by searching for the Trane or

American Standard Diagnostics App in your App Store

. This

system must include a A/T HUI2360A200U thermostat and a

TSYS2C60A2VVU system controller to operate and is Link

communicating only.

NNoottee:: “Graphics in this document are for representation only.

Actual model may differ in appearance.”

NNoottee:: This unit is Link communicating only.

NNoottee:: R-454B refrigerant is an "A2L" refrigerant meaning: A = non-

toxic, 2 = flammable, L = low burning velocity. The term "A2L"

is used throughout this document.

NNoottee:: This unit requires software version 7.0 or later on the SC360

and UX360.

Installer’s Guide

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This document is an installer's guide for Trane Link Variable Speed Heat Pumps and Air Conditioners, specifically models 5TWV8X24A1000A, 5TWV8X36A1000A, 5TWV8X48A1000A, 5TWV8X60A1000A, 5TTV8X24A1000A, 5TTV8X36A1000A, 5TTV8X48A1000A, and 5TTV8X60A1000A.

Function Description

These units are variable speed heat pumps and air conditioners designed for residential and commercial applications, integrating with Trane Link communication systems. They are intended to provide comfortable and energy-efficient indoor environments. The system requires a Trane/American Standard HUI2360A200U thermostat and a TSYS2C60A2VVU system controller for operation, and it is Link communicating only. The units utilize R-454B refrigerant, classified as an "A2L" refrigerant, indicating it is non-toxic, flammable, and has a low burning velocity.

Important Technical Specifications

Models and Dimensions:

5TWV8X24A / 5TTV8X24A: 41 x 30 x 33 inches (H x D x W), estimated weight 181 lbs (5TWV8X24A) / 176 lbs (5TTV8X24A).
5TWV8X36A / 5TTV8X36A: 41 x 30 x 33 inches (H x D x W), estimated weight 194 lbs (5TWV8X36A) / 189 lbs (5TTV8X36A).
5TWV8X48A / 5TTV8X48A: 41 x 34 x 37 inches (H x D x W), estimated weight 231 lbs (5TWV8X48A) / 226 lbs (5TTV8X48A).
5TWV8X60A / 5TTV8X60A: 41 x 34 x 37 inches (H x D x W), estimated weight 241 lbs (5TWV8X60A) / 236 lbs (5TTV8X60A).

Refrigerant Line and Service Valve Connection Sizes:

5TWV8X24A / 5TTV8X24A: Vapor Line 1/2", Liquid Line 5/16".
5TWV8X36A / 5TTV8X36A: Vapor Line 5/8", Liquid Line 5/16".
5TWV8X48A / 5TTV8X48A: Vapor Line 3/4", Liquid Line 5/16".
5TWV8X60A / 5TTV8X60A: Vapor Line 3/4", Liquid Line 5/16".
Alternate line sizes are also provided, typically involving a 3/8" liquid line.

Lineset Lengths and Lifts:

2 Ton Units: Max length 100 ft, max lift 50 ft for both 5/16" and 3/8" liquid lines.
3 Ton Units: Max length 60-100 ft, max lift 40-50 ft depending on line size.
4 Ton Units: Max length 60-100 ft, max lift 30-50 ft depending on line size.
5 Ton Units: Max length 50-100 ft, max lift 30-50 ft depending on line size.
Subcooling adders are specified for various liquid line diameters, lengths, and lifts. For systems with 3/8" line set diameters, design subcooling is used for all length and lift combinations.

Electrical Specifications:

Low Voltage Communicating Wiring: Maximum total cable length for the entire comfort control communicating system is 500 ft using 18 AWG wire.
High Voltage: Live electrical components require caution. Disconnect all electric power before servicing. Earth connection is essential before connecting electrical supply due to high leakage current.

Refrigerant:

R-454B refrigerant is a blend and should only be added to the system in liquid form.
Variable speed compressors use variable speed compressor oil that readily absorbs moisture. Systems should remain sealed whenever possible. If open to the atmosphere for more than 4 hours, the compressor oil must be replaced. Driers must be changed when opening the system for component replacement.
A2L equipment requires red-marked service ports and pipes.
The system is factory charged for the outdoor unit, 10 feet of tested connecting line, and the smallest rated indoor evaporative coil match.

Operating Range (Link mode):

Cooling: 2 – 5 tons, 55°F – 120°F.
Heating: 2 – 5 tons, 0°F – 60°F.
The unit requires software version 7.0 or later on the SC360 and UX360.

Usage Features

Link Communication:

The system operates in "Link mode," which enables auto-configuration of airflow.
The Diagnostics Mobile App (Trane or American Standard Diagnostics App) can be used for system diagnostics by scanning a QR code on the unit.
Low voltage connections use simple, color-coded connectors for ease of installation.

Thermostat and System Controller:

Requires a UX360 Smart Thermostat with SC360 System Controller.
Approved controllers include UX360 Smart Thermostat with SC360 System Controller, TAM8X, S8V3, and Link Relay Panel.

Charging Mode-Cooling:

The only approved method for setting or validating system charge is using "Charging Mode-Cooling" test mode, found in the UX360 Smart Thermostat controls or the Diagnostic Mobile App.
Outdoor temperature must be between 55°F and 120°F, and indoor temperature between 70°F and 80°F for accurate charging.
For outdoor temperatures below 55°F, the "Weigh-In Method" in heating mode is recommended for charging.

Defrost Control (Heat Pump only):

Demand defrost control measures outdoor ambient and coil temperatures to determine the need for defrost.
Defrost is enabled when the outdoor ambient temperature is at or below 52°F, coil temperature is at or below 35°F, and there is a heat/cool demand for at least two minutes.
Forced defrost tests can be initiated via the UX360 User Interface or Diagnostic Mobile App in heat mode.

Maintenance Features

Safety Precautions:

Installation and servicing must be performed by qualified personnel.
Disconnect all electric power, including remote disconnects, before servicing.
Follow proper lockout/tagout procedures.
Exercise extreme caution when opening service valves to prevent abrupt release of system charge.
Do not touch the top of the compressor due to hot surfaces.
Recover refrigerant to relieve pressure before opening the system.
Ensure proper ventilation when working on the equipment, especially with A2L refrigerants.
Use appropriate refrigerant recovery cylinders and calibrated weighing scales.

Refrigerant Line Installation and Maintenance:

Piping material, routing, and installation must comply with national and local codes and standards.
All field joints must be brazed, not soldered, and accessible for inspection.
The vapor line must always be insulated. Insulating the liquid line through attic spaces can improve system performance.
When reusing existing refrigerant lines, ensure they are the correct size, free of leaks, acid, and oil.
Isolation hangers should be used when fastening refrigerant lines to structural elements to prevent vibration transmission.
Brazing: Use dry nitrogen purge during brazing to prevent oxidation. Wrap a wet rag around valve bodies to avoid heat damage. Remove the wet rag before stopping the nitrogen purge. Take precautions to avoid heat damage to the base pan.
Leak Check: Pressurize refrigerant lines and evaporator coil to 600 PSIG with dry nitrogen. Maintain pressure for at least 1 hour with no decrease. Check for leaks using a soapy solution at brazed locations.
Evacuation: Evacuate until the micron gauge reads no higher than 350 microns, then close off the valve to the vacuum pump. Maintain vacuum for 10 minutes.
Cleaning Outdoor Coil: Use caution to prevent water from entering the electrical control compartment. Avoid spraying water towards the top rows of the coil near the control panel.

System Checkout:

A comprehensive checkout procedure includes verifying wiring connections, voltage and running current, refrigerant line isolation and security, braze connection leak checks, vacuum integrity (350 microns), unit inspection for shifted tubing, sealed and insulated ductwork, and clear drain lines.
Confirm that supply registers and return grilles are open, indoor blower and outdoor fan operate smoothly, blower motor speed is correct, cover panels are tightened, and the system functions safely in all modes.
Ensure the owner is instructed on system use and that the refrigerant leak detection system is operational.

Cold Climate Considerations (Heat Pump Only):

Units should be elevated 3-12 inches above the pad or rooftop to allow drainage of snow and ice during defrost cycles.
Ensure drain holes in the unit base pan are not obstructed.
Avoid locations prone to snow drifts; if unavoidable, install a snow drift barrier.

Coastal Considerations:

For units installed within one mile of salt water, models without factory-supplied Seacoast Salt Shields require the addition of a BAYSEAC001 (Seacoast Kit).