Trane TTA180F 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 TTA180F Specifications

General

Brand	Trane
Model	TTA180F
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 when installing or servicing units due to potential hazards.

R-410A Refrigerant Handling

Updated Guidelines

Liquid Lines

Details historical and updated pressure drop guidelines for liquid lines with R-410A.

Suction Lines

Line Sizing, Routing, and Component Selection

Liquid Lines

Covers proper sizing, routing, insulation, and component selection for liquid lines.

Component Details

Expansion Valve

Explains the role of the expansion valve in metering refrigerant and the importance of correct selection.

Risk of Explosion with Refrigerant Line

Gas Line Considerations

Line Sizing

Covers gas line sizing requirements for proper oil return to the compressor and system efficiency.

Expansion Valves

Remodel, Retrofit, or Replacement

Refrigerant Piping Examples