Trane TTA090D 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 TTA090D Specifications

General

Brand	Trane
Model	TTA090D
Category	Heat Pump
Language	English

Summary

Tube Size and Component Selection

Warnings, Cautions and Notices

Personal Protective Equipment (PPE) Required

Mandates the use of appropriate PPE for installation and servicing tasks.

Introduction

R-410A Refrigerant Pressure Warning

Warns about R-410A operating at higher pressures and the need for compatible equipment.

Line Sizing, Routing, and Component Selection

Liquid Lines

Covers liquid line sizing, routing, insulation, and component selection.

System Components and Valves

Expansion Valve

Details the role and selection criteria for expansion valves in metering refrigerant.

Gas Line Sizing and Routing

Gas Line Sizing

Covers gas line sizing for oil return and efficiency, mentioning dual diameters.

Gas Line Routing

Expansion Valves Details

Expansion Valve Specifications

Provides details on Sporlan expansion valves, settings, and adjustments.

Hot Gas Bypass

Remodel, Retrofit, or Replacement

R-410A Conversion Warning

Reiterates the warning about R-410A pressure and equipment compatibility for conversions.

Component Compatibility for Retrofit

Refrigerant Piping Examples

TTA Cooling-Only Unit Piping Examples

Indoor Coil Piping Configurations

Non-TWE Indoor Coil with One Distributor

Parts and Component Selection

TTA Component Selection Summary

Provides a table summarizing component selections for TTA models.

TWA Component and Expansion Valve Selections

TWA Component Selection Summary

Provides a table summarizing component selections for TWA models.

Expansion Valve Selections

Lists expansion valves by manufacturer, tonnage, and part number for TTA/TWA.