Trane 4TTR4A Series User Manual

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Condensing Units
4TTR4A/B Models
ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES
IMPORTANT -- This Document is customer property and is to remain with this unit. Please return to service information
pack upon completion of work.
These instructions do not cover all variations in
systems nor provide for every possible contingency to
be met in connection with installation. All phases of
this installation must comply with NATIONAL, STATE
AND LOCAL CODES. Should further information be
desired or should particular problems arise which are not
covered sufiieiently for the purchaser's purposes, the matter
should be referred to your installing dealer or local distributor.
A. GENERAL
This information is intended for use by individuals posses-
sing adequate backgrounds of electrical and mechanical
experience. Any attempt to repair a central air conditioning
product may result in personal injury and or property
damage. The manufacturer or seller cannot be responsible
for the interpretation of this information, nor can it assume
any liability in connection with its use.
The following instructions cover 4TFR4 Condensing Units.
NOTE:
These outdoor units are designed to be installed with
approved/matched Trane indoor systems.
These units use R-410A refrigerant which operates at 50 to
70% higher pressures than R-22. Use only R-410A approved
service equipment. Refrigerant cylinders are painted a
"Rose" color to indicate the type of refrigerant and may
contain a "dip" tube to allow for charging of liquid refriger-
ant into the system. All R-410A systems use a POE oil that
readily absorbs moisture from the atmosphere. To limit this
"hygroscopic" action, the system should remain sealed
whenever possible. Never break a vacuum with air and
always change the driers when opening the system for
component replacement.
Check for transportation damage after unit is uncrated.
Report promptly, to the carrier, any damage found to the unit.
To determine the electrical power requirements of the unit,
refer to the nameplate of the unit. The electrical power
available must agree with that listed on the nameplate.
UNiT CONTAINS R-410A REFRIGERANT!
R-410A OPERATING PRESSURE EXCEEDS THE
LIMIT OF R-22. PROPER SERVICE EQUIPMENT IS
REQUIRED. FAILURE TO USE PROPER SERVICE
TOOLS MAY RESULT IN EQUIPMENT DAMAGE OR
PERSONAL INJURY.
SERVICE
USE ONLY R-410A REFRIGERANT AND
APPROVED POE COMPRESSOR OIL.
©
5 FT. ABOVE UNiT -- UNRESTRICTED
B. LOCATION AND PREPARATION
OF THE UNiT
1. When removing unit from the pallet, notice the tabs on
the basepan. Remove tabs by cutting with a sharp tool as
shown in Figure 2 (see page 2).
2. The unit should be set on a level support pad at least as
large as the unit base pan, such as a concrete slab. If this
is not the application used please refer to application
bulletin "Trane XR-APG**-EN". (*denotes latest
revision number)

Trane 4TTR4A Series Specifications

General

Refrigerant	R-410A
Warranty	10 Year Limited Warranty on compressor
Stages	Single-stage
Cooling Capacity	1.5 to 5 tons
Voltage	208/230V

Summary

Condensing Unit Installation Guide

General Information and Safety

General installation information, safety warnings, and cautions for R-410A systems.

Unit Location and Preparation

Guidelines for selecting and preparing the unit's installation location, including clearance and support.

Refrigerant Line Installation

Accutron Flow Control Valve

Details on the Accutron flow control valve and orifice size selection for optimal performance.

Installing Refrigerant Lines

Procedures and precautions for running and connecting refrigerant lines, including insulation and routing.

Refrigerant Service and Handling

Service Valve Operation

Procedures for operating liquid and gas service valves, including warnings for safe handling.

Brazing Refrigerant Lines

Techniques and precautions for brazing refrigerant lines, including nitrogen purge and heat protection.

Leak Check and System Evacuation

Steps for leak testing refrigerant lines and evacuating the system to the required micron level.

Electrical and System Checks

Electrical Connections

Guidelines for power wiring, grounding, and low voltage wiring for the unit.

Compressor Start-up and Checkout

Procedures for compressor start-up and system operational checks.

Optional Components and Special Conditions

Information on electric heaters, start controls, outdoor thermostats, and seacoast shields.

Troubleshooting Guide

A chart to diagnose system faults and identify primary and secondary causes.

Typical Field Hook-up Diagrams

Wiring Diagrams

Illustrations of typical field wiring connections for air handlers and furnaces.

Unit Outline Dimensions

Outline Drawing and Dimensions

Dimensional drawings and a table of dimensions for various 4TTR4 models.

Mounting Hole Locations

Base Mounting Hole Patterns

Diagrams showing mounting hole locations for Base 3 and Base 4.

Checkout Procedure

Pre-Checkout Checklist

A list of checks to perform after installation is completed.

System Checkout Procedure

Step-by-step guide for checking component operation with main power disconnects closed.