Trane 2/4TEC3F18B1000A 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.
HAZARDOUS VOLTAGE - DISCONNECT POWER BEFORE SERVICING
WARNING:
Installer’s Guide
General Information 1
Unit Installation 3
Upflow 3
Downflow 4
Horizontal Left 6
Horizontal Right 7
Duct Connections 8
Refrigerant Piping 8
Brazing to Evaporator 8
Condensate Drain Piping 9
Electrical — Power Wiring 10
Control Wiring 10
Hook-up Diagrams 11
Outline Drawing 14
Checkout Procedures 16
Contents
A. GENERAL INFORMATION
WARNING
!
THIS INFORMATION IS FOR USE BY INDIVIDUALS
HAVING ADEQUATE BACKGROUNDS OF ELECTRICAL
AND MECHANICAL EXPERIENCE. ANY ATTEMPT TO
REPAIR A CENTRAL AIR CONDITIONING PRODUCT
MAY RESULT IN PERSONAL INJURY AND/OR PROP-
ERTY DAMAGE. THE MANUFACTURER OR SELLER
CANNOT BE RESPONSIBLE FOR THE INTERPRETA-
TION OF THIS INFORMATION, NOR CAN IT ASSUME
ANY LIABILITY IN CONNECTION WITH ITS USE.
CAUTION
!
To prevent shortening its service life, the air handler
should not be used during the finishing phases of con-
struction. The low return air temperatures can lead to
the formation of condensate. Condensate in the pres-
ence of chlorides and fluorides from paint, varnish,
stains, adhesives, cleaning compounds, and cement
creates a corrosive condition which may cause rapid
deterioration of the cabinet and internal components.
These instructions do not cover all variations in systems
or provide for every possible contingency. Should fur-
ther information be desired or particular problems arise
which are not covered sufficiently by this manual, con-
tact your local distributor or the manufacturer as listed
on the air handler nameplate.
These air handlers are shipped from the factory in the
upflow or horizontal right configuration and are fully
convertible to downflow or horizontal left. Refer to
Section B beginning on page 3 for additional informa-
tion.
INSPECTION
Check carefully for any shipping damage. This must
be reported to and claims made against the transpor-
tation company immediately. Check to be sure all
major components are in the unit. Any missing parts
should be reported to your supplier at once, and re-
placed with authorized parts only.
CAUTION
!
Cardboard packing material must be removed from in-
side the blower assembly before starting the unit.
Failure to do so may cause indoor blower motor failure.
INSTALLATION LIMITATIONS & RECOMMENDATIONS
The general location of the air handler is normally
selected by the architect, contractor and/or home owner
for the most effective application and satisfaction.
NOTE: CONDENSATION MAY OCCUR ON THE SUR-
FACE OF THE AIR HANDLER WHEN INSTALLED IN AN
UNCONDITIONED LOCATION. WHEN UNITS ARE IN-
STALLED IN UNCONDITIONED SPACES, VERIFY THAT
ALL ELECTRICAL AND REFRIGERANT LINE PEN-
ETRATIONS ON THE AIR HANDLER ARE SEALED
COMPLETELY.
18-GE08D1-7
Convertible Air Handlers
1-1/2 – 5 Ton
2/4TEC3F18B1000A 2/4TEC3F42C1000A
2/4TEC3F24B1000A 2/4TEC3F48B1000A
2/4TEC3F30B1000A 2/4TEC3F55B1000A
2/4TEC3F36B1000A 2/4TEC3F60B1000A

Trane 2/4TEC3F18B1000A Specifications

General

Brand	Trane
Model	2/4TEC3F18B1000A
Category	Air Handlers
Language	English

Summary

General Information

Safety Warnings

Crucial safety precautions for installation and operation, including hazardous voltage.

Unit Inspection

Procedures for checking the unit for shipping damage and ensuring all major components are present.

Installation Locations

Details on where the air handler can be installed, including restrictions and suitability for various spaces.

Field Installed Heaters

Guidelines for using field-installed heaters and implications for warranty and safe operation.

Humidifier Considerations

Notes on permitted humidifier types and bypass airflow to prevent water blow-off.

Installation Limitations and Recommendations

Location Considerations

Guidelines for selecting unit location and sealing penetrations for unconditioned spaces.

Air Handler Subbase

Subbase Dimensions and Figure

Illustration and table detailing subbase dimensions based on air handler model number.

Two Piece Cabinet Disassembly

Disassembly and Reassembly Steps

Detailed steps for disassembling and reassembling the cabinet for easier installation in tight areas.

Unit Installation

Upflow Configuration

Procedures for preparing the unit for upflow installation, including drip tray removal.

Upflow Installation Details

Details on unit placement on pedestals, ductwork connection, and sealing electrical openings.

Downflow Configuration

Preparation steps for downflow installation, including drip tray and baffle modifications.

Downflow Baffle Kit Installation

Instructions for installing the downflow baffle kit, gaskets, and water diverter baffles.

Downflow Unit Positioning

How to position the unit in downflow and requirements for supplementary heater subbases.

Downflow Duct and Wiring Details

Requirements for return duct connections, sealing wiring entries, and ductwork sealing.

Horizontal Left Configuration

Steps to convert the unit to horizontal left, including filter recommendations.

Horizontal Left Suspension and Drains

Guidelines for suspending the unit, installing auxiliary drain pans, and connecting drain lines.

Horizontal Right Configuration

Installation details for horizontal right, including filter, suspension, and drain pan recommendations.

Horizontal Right Duct and Wiring

Details on duct connections, sealing electrical knockouts, and ductwork sealing.

Duct Connections

Duct Connector Requirements

Specifies the use of flame retardant duct connectors for supply and return air connections.

Refrigerant Piping

Piping Installation Guidelines

Best practices for routing refrigerant piping for service access and protecting the TXV bulb.

Brazing to Evaporator

Brazing Procedures

Instructions for brazing refrigerant lines, including using a braze shield and sealing tubing.

Pre-Brazing and Sealing

Steps for preparing refrigerant tubing, brazing, and sealing lines to prevent contamination.

Condensate Drain Piping

Primary Drain Installation

Guidelines for installing the primary drain line, including trap requirements, slope, and insulation.

Secondary Drain and Auxiliary Pan

Instructions for secondary drain connections, sealing weep holes, and installing auxiliary drain pans.

Drain System Best Practices

Recommendations for trap types, location, avoiding reducing fittings, and proper sealing of drain connections.

Electrical Power Wiring

Wiring and Connection Guidelines

Instructions for power wiring, including voltage selection, wire sizing, grounding, and sealing electrical openings.

Control Wiring

System Control Connections

Guidance on connecting indoor, outdoor units, and comfort controls using color-coded wiring.

Heat Pump with Supplemental Heat Wiring

Wiring diagram and notes for connecting the air handler with a heat pump and supplemental heat.

Single Speed Cooling, 1 Stage Heat Wiring

Wiring diagram and notes for single speed cooling with one stage of heat.

Single Speed Cooling, 2 Stage Heat Wiring

Wiring diagram and notes for single speed cooling with two stages of heat.

Outline Drawing and Dimensions

Unit Dimensions and Clearances

Diagrams showing unit outline and a table detailing minimum clearances for installation.

Dimensional Data Table

Table listing height (H) and width (W) dimensions for various 2/4TEC air handler models.

Checkout Procedure

Pre-Operation Checklist

A checklist of essential checks to perform after installation before operating the unit.

Supplementary Heater Checkout

Specific checkout steps for air handlers equipped with supplementary heaters.