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Trane TWA120D - User Manual

Trane TWA120D
28 pages
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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
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Trane TWA120D Specifications

General IconGeneral
Model NumberTWA120D
CategoryHeat Pump
HSPF8.2
Voltage208/230 V
Phase1
RefrigerantR-410A
Cooling Capacity12000 BTU/h
Heating Capacity12000 BTU/h

Summary

Warnings, Cautions and Notices

Environmental Concerns!

Discusses the impact of man-made chemicals on the Earth's ozone layer and responsible refrigerant handling practices.

Responsible Refrigerant Practices!

Emphasizes technician certification and adherence to environmental laws for safe and responsible refrigerant management.

Personal Protective Equipment (PPE) Required!

Mandates the use of appropriate Personal Protective Equipment (PPE) for technicians during installation and servicing operations.

Introduction

R-410 A Refrigerant under Higher Pressure than R-22!

Alerts users to the higher operating pressures of R-410A refrigerant and the critical need for compatible service equipment.

Trademarks

Lists Trane and other trademarks referenced in the document, acknowledging their respective owners.

Overview

Background

Explains the fundamental principles guiding refrigerant piping practices, emphasizing charge minimization for system reliability.

Updated Guidelines

Presents updated guidelines for refrigerant piping, specifically covering liquid and suction lines for TTA/TWA systems.

Equipment Placement

Provides guidance on minimizing distance between system components for optimal performance and reliability, detailing line routing.

Line Sizing, Routing, and Component Selection

Liquid Lines

Details line sizing, routing, insulation, and component selection requirements for liquid refrigerant lines.

Gas Line

Covers gas line sizing, routing, insulation, and component selection for refrigerant systems, including oil return considerations.

Expansion Valves

Controls

Hot Gas Bypass

Remodel, Retrofit, or Replacement

Refrigerant Piping Examples

Parts

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