Trane ComfortLink II 4TWL9036A1000B 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.
October 2021
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Variable Speed ComfortLink™™ II
Side Discharge HP Models
For coastal applications where units are installed within one (1) mile of salt water, epoxy coated models are recommended. These models
have an 8 week lead time after order.
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4TWL9048A1COTB
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Installer’s Guide

Trane ComfortLink II 4TWL9036A1000B Specifications

General

Brand	Trane
Model	ComfortLink II 4TWL9036A1000B
Category	Air Conditioner
Language	English

Summary

Safety Warnings and Precautions

Hazardous Voltage Warning

Warning about electrical hazards and the need for proper disconnection before servicing.

Refrigerant Oil Warning

Information regarding R-410A refrigerant and POE oil handling and properties.

Refrigerant Containment Caution

Service Valve Operation Warning

Warning about handling service valves to prevent abrupt refrigerant release and injury.

Brazing and Leak Testing

High Leakage Current Warning

Warning about high leakage current and the importance of earth connection.

Electrical Hazards

Warnings related to high voltage and potential electrical hazards during installation and servicing.

Refrigerant Line Brazing

Brazing Procedure

Step-by-step instructions for brazing refrigerant lines, including preparation and purging.

Brazing Procedure Continuation

Refrigerant Line Leak Check

Check for Leaks

Procedure for pressurizing lines with nitrogen and checking for leaks using a soapy solution.

Refrigerant Line and Indoor Coil Evacuation

Evacuation Procedure

Steps for evacuating the system to a specific micron level for leak-free and dry operation.

Service Valves

Open the Gas Service Valve

Open the Liquid Service Valve

Electrical — High Voltage

High Voltage Power Supply

Safety precautions and compliance requirements for high voltage power connections.

High Voltage Disconnect Switch

Guidance on installing a disconnect switch and managing high voltage connections.

Start Up

Startup Procedure

Step-by-step guide for initiating system power and operation after installation.

System Charge Adjustment

Temperature Measurements for Charging

Subcooling Charging Corrections

Charging and Correction Charts

R-410A Refrigerant Charging Chart

Table of liquid gage pressure based on liquid temperature and design subcooling.

Subcool Charging Correction Charts

Charging the Unit

Proper Gage Pressure Measurement

Proper Gage Pressure Adjustment

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

Subcooling Charging Procedure (Heating)

Method for charging in heating mode at low outdoor temperatures using weigh-in.

Communicating Display Assembly (CDA)

Defrost Control Operation

Force Defrost Test Procedure

Steps to initiate and execute the forced defrost test via the CDA or FRC DFT button.

Checkout Procedures

Installation Checkout Checklist