Trane TTA180E User Manual

October 2009
SS-APG008-EN
Tube Size and Component
Selection
for TTA and TWA Split Systems (6-20 Tons)
Using Refrigerant 410A
Model Numbers:
TTA073D TTA090D TTA120D
TTA120E TTA120F TTA150E
TTA180E TTA180F TTA240E
TTA240F TWA073D TWA120D
TWA180E TWA240E TWA090
Application Guide

Trane TTA180E Specifications

General

Brand	Trane
Model	TTA180E
Category	Heat Pump
Language	English

Summary

Warnings, Cautions and Notices

Safety Definitions and PPE

Defines warning, caution, notice symbols and outlines required personal protective equipment.

Arc/Flash Protection

Specific PPE requirements for arc/flash protection during servicing.

Introduction

R-410A Refrigerant Safety

Highlights critical safety information regarding R-410A refrigerant's higher pressures.

Overview - Updated Guidelines

Updated Line Sizing Guidelines

Liquid Line Sizing, Routing, and Components

Liquid Line Components

Line Components and Safety

Solenoid Valves and Safety Warnings

Discusses solenoid valve use and critical safety warning regarding refrigerant line explosion risks.

Expansion Valves and Check Valves

Explains the function of expansion valves and check valves, crucial for refrigerant metering and heat pump operation.

Gas Line Sizing and Routing

Gas Line Sizing and Slope

Expansion Valve Selection and Adjustment

TXV Selection Criteria

Criteria for selecting the correct expansion valve based on coil capacity and distributor requirements.

Achieving Target Superheat

Instructions on adjusting expansion valves using turning to achieve the specified 18°F superheat.

Remodel, Retrofit, and Replacement

R-410A System Conversion