Trane 2TTR2018-060 User Manual

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.
Installer’s Guide
Condensing Units
2TTR2018-060, 2TTR1018-060 & 2TTR0060
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 sufficiently for the purchaser’s purposes, the matter
should be referred to your installing dealer or local distributor.
A. GENERAL
The following instructions cover 2TTR2, 2TTR1 & 2TTR0;
Condensing Units.
NOTE:
These outdoor units may be used with indoor units
equipped with Thermostatic Expansion Valve or
Accutron™ Flow Control Check Valve (F.C.C.V.) assembly
for refrigerant flow control only.
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.
B. LOCATION & 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 APB2001-02”.
3. The support pad must NOT be in direct contact with any
structure. Unit must be positioned a minimum of 12"
from any wall or surrounding shrubbery to insure
adequate airflow. Clearance must be provided in front of
control box (access panels) & any other side requiring
service access to meet National Electrical Code. Also,
the unit location must be far enough away from any
structure to prevent excess roof run-off water from
pouring directly on the unit. Do not locate unit(s) close to
bedroom(s).
1
4. The top discharge area must be unrestricted for at least
five (5) feet above the unit.
5. When the outdoor unit is mounted on a roof, be sure the
roof will support the unit’s weight. Properly selected
isolation is recommended to prevent sound or vibration
transmission to the building structure.
6. The maximum length of refrigerant lines from outdoor to
indoor unit should NOT exceed sixty (60) feet.
7. If outdoor unit is mounted above the air handler,
maximum lift should not exceed sixty (60) feet (suction
line). If air handler is mounted above condensing unit,
maximum lift should not exceed sixty (60) feet (liquid
line).
NOTE:
Refer to “Refrigerant Piping Software” Pub. No. 32-3312-02.
8. Locate and install indoor coil or air handler in accor-
dance with instruction included with that unit.
5 FT. ABOVE UNIT-UNRESTRICTED
2TTR2-IN-1B
18-AC51D2-3

Trane 2TTR2018-060 Specifications

General

Model	2TTR2018-060
Type	Heat Pump
Cooling Capacity (BTU/h)	18000
Cooling Capacity (tons)	1.5
SEER	14
HSPF	8.2
Refrigerant	R-410A
Compressor Type	Scroll
Stages	Single-stage
Voltage (V)	208/230
Phase	1
Warranty	10 years limited

Summary

General Information and Unit Placement

General Unit Information

Covers general instructions for 2TTR2, 2TTR1 & 2TTRO Condensing Units.

Location and Preparation Guidelines

Instructions for unit placement, clearance, and support pad requirements.

Refrigerant Line and Service Valve Procedures

Accutron Flow Control Valve

Details on Accutron flow control valve and required orifice size changes.

Installing Refrigerant Lines

Guidance on routing, bending, insulating, and securing refrigerant lines.

Service Valve Operation

Information on brass liquid and gas line service valve operation.

Brazing Refrigerant Lines

Steps and precautions for brazing refrigerant lines, including nitrogen purge.

Leak Check Procedure

Procedure for checking refrigerant lines for leaks using nitrogen and soap bubbles.

System Evacuation

Evacuating refrigerant lines and indoor coil to below 350 microns.

Refrigerant Charging and Valve Operation

Details on refrigerant charging, closing supply cylinders, and opening service valves.

Electrical, Startup, and Operational Procedures

Electrical Connections

Guidelines for power wiring, grounding, disconnects, and low voltage wiring.

Compressor Start Up

Procedure for safely starting the compressor, including sump heat activation.

Operational and Checkout Procedures

Overview of final system checks and adjustments for proper performance.

Troubleshooting Guide

Chart for diagnosing system faults and identifying potential causes.

Reference Diagrams and Procedures

Typical Field Hook-Up Diagrams

Wiring diagrams for various thermostat and air handler configurations.

Outline Drawing and Dimensions

Dimensional drawings and specifications for different unit models.

Mounting Hole Location

Diagrams showing mounting hole positions for various base types.

Checkout Procedure Checklist

A comprehensive checklist for verifying system installation and operation.