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Trane ComfortLink II 4TWV8X24A1000A User Manual

Trane ComfortLink II 4TWV8X24A1000A
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SSAAFFEETTYY WWAARRNNIINNGG
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.
September 2021
1188--BBCC110066DD11--11CC--EENN
TRANE Link or ComfortLink II
Variable Speed Heat Pumps and Air Conditioners
4TWV8X24A1000A
4TWV8X36A1000A
4TWV8X48A1000A
4TWV8X60A1000A
4TTV8X24A1000A
4TTV8X36A1000A
4TTV8X48A1000A
4TTV8X60A1000A
TM
The Diagnostics Mobile App is available by scanning a QR
code located inside this unit or by searching for the Link
Diagnostics App in your App Store
®
.
NNoottee:: “Graphics in this document are for representation only. Actual
model may differ in appearance.”
NNoottee:: This unit can be used in Comfortlink
II (“clii”) mode or Link
mode.
Installer’s Guide
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Trane ComfortLink II 4TWV8X24A1000A Specifications

General IconGeneral
BrandTrane
ModelComfortLink II 4TWV8X24A1000A
CategoryAir Conditioner
LanguageEnglish

Summary

Safety Information

Electrical Hazards

Warnings about electrical hazards, leakage current, and grounding.

Refrigerant and Oil Handling

Precautions for handling R-410A refrigerant and oil.

Service Safety Procedures

Safety guidelines for service valves, brazing, and hot surfaces.

Electrical Hazards and System Compatibility

400 Volts Electrical Hazard

Warning about high voltage electrical hazard.

Approved Combinations

Lists compatible indoor units and controls for Link and clii modes.

Operating Range

Specifies the cooling and heating operating temperature limits.

Unit Location Considerations

Unit Dimensions and Refrigerant Line Specifications

Unit Dimensions and Weight

Details unit dimensions and weight for various models.

Refrigerant Line and Service Valve Sizes

Specifies refrigerant line and service valve connection sizes.

Installation Guidelines

Notes on mounting, isolation, and line length limits.

Refrigerant Line and Location Considerations

Alternate Refrigerant Line and Service Valve Sizes

Provides alternative line and valve connection sizes.

Suggested Locations for Best Reliability

Recommends optimal placement for reliable operation and airflow.

Unit Location Considerations - Climate Specifics

Cold Climate Considerations

Precautions for installing units in areas with snow and freezing temperatures.

Coastal Considerations

Requirements for coastal installations, including salt shields.

Unit Preparation

Pad Installation

Guidelines for installing the unit on a support pad.

Refrigerant Line Considerations

Factory Charge

Information on factory refrigerant charge for outdoor units.

Refrigerant Line Length and Lift

Details on measuring line length and vertical change.

Refrigerant Line Insulation

Guidelines for insulating vapor and liquid refrigerant lines.

Refrigerant Line Routing and Isolation

Reuse of Existing Refrigerant Lines

Precautions when reusing existing refrigerant lines.

Routing and Isolation Precautions

Guidelines for routing and isolating lines from structural elements.

Refrigerant Line Isolation Methods

Isolation in Wall Spaces

Methods for isolating refrigerant lines within wall spaces.

Isolation Through Walls

Procedures for isolating lines passing through walls.

Refrigerant Line Brazing

Preparing Lines for Brazing

Steps for deburring, cleaning, and purging refrigerant lines.

Refrigerant Line Brazing Procedures

Brazing Service Valves and Driers

Detailed steps for brazing refrigerant lines to service valves and driers.

Refrigerant Line Leak Check and Evacuation

Leak Check Procedure

Method for checking refrigerant lines for leaks using nitrogen.

Evacuation Procedure

Steps for evacuating the system to remove moisture and air.

Service Valves Operation

Opening the Gas Service Valve

Instructions for opening the gas service valve.

Opening the Liquid Service Valve

Instructions for opening the liquid service valve.

Low Voltage Wiring - Link Mode

Maximum Wire Length

Specifies the maximum allowed length for low voltage wiring.

Link Mode Hook-up Diagrams

Illustrates low voltage wiring connections for Link mode.

Low Voltage Wiring - clii Mode

clii Mode Hook-up Diagrams

Illustrates low voltage wiring connections for clii mode.

Low Voltage Wiring Connectors

Link Mode Wire Connectors

Details on using color-coded connectors for Link mode wiring.

High Voltage Electrical Connections

High Voltage Power Supply and Disconnect

Guidelines for high voltage power supply and disconnect switch installation.

Control Board LED Indicators

LEDs in clii Mode

Explains the status LEDs for clii mode operation.

LEDs in clii and Link Modes

Describes COMM LEDs for clii and Link modes.

Start Up Procedures

Initial Steps and Power Application

Steps before and during applying power to the system.

System Test Mode

Using test mode for setting system charge via subcooling.

System Charge Adjustment

Temperature Measurements for Charging

Required temperature measurements for subcooling charging.

Subcooling Charging Corrections Worksheet

Worksheet for calculating subcooling corrections.

Subcool Charging Correction Charts

Charging Charts for 2.0 to 5.0 Ton Units

Graphical charts for subcooling corrections based on line length and lift.

Subcool Charging Correction Charts

R-410A Refrigerant Charging Chart

Chart detailing liquid temperature, design subcooling, and gauge pressure.

Charging the Unit

Proper Gage Pressure Adjustment

Adjusting refrigerant for proper gage pressure using charging charts.

Stabilizing and Verifying System Charge

Procedures for stabilizing the system and verifying performance.

Subcooling Charging Below 55° F Outdoor Temp. (In Heating Only)

Weigh-In Method for Charging

Procedure for weighing in charge below 55°F outdoor temp.

Communicating Display Assembly (CANda)

Navigation and Menus

Overview of CANda navigation and main menu options.

Defrost Control (Heat Pump Only)

Demand Defrost Operation

How demand defrost measures and determines defrost needs.

Forced Defrost Procedure

Steps to initiate and execute a forced defrost test via CANda.

Checkout Procedures

System Final Checks

Checklist for final installation verification and system operation.

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