Trane BAY4TXV1830A User Manual

General Information
This TXV kit is intended only for use with the specific
models of the A4AH Air Handlers.
This kit is used to increase efficieny ratings for these
models.
NOTE: This kit is for use with 410A Regerant only.
Kit Identication
Confirm that the air handler TXV kit is approved for use
with the air handler model being installed.
Inspection
Check carefully for any shipping damage. Any damage must
be reported to, and claims made against the transportation
company immediately. Any missing parts should be reported
to your supplier at once and replaced with authorized parts
only.
Coil TXV Kit Contents
Open and inspect contents for damage or missing
items.
Each kit contains:
No. Qty Description
1 1 Expansion Valve
2 1 Teflon® O-ring
3 1 Installer's Guide (Not shown)
4 1(2) Bulb Insulation
5 1(2) Cable Tie
6 1 Sensing Bulb Strap
7 1(2) Push-in Cable Tie
INSTALLER'S
GUIDE
IMPORTANT — This Document is customer property and is to remain with this unit. Please return to service information
pack upon completion of work.
ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES
88-A4AH4TXV-1C-EN
Fits Coil Models:
A4AH4P18A
A4AH4P24A
A4AH4P30A
Coil TXV Kit:
BAY4TXV1830A
Figure 1
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Trane BAY4TXV1830A Specifications

General

Model Number	BAY4TXV1830A
Refrigerant Type	R-410A
Voltage	24V
Function	Refrigerant flow control
Connection Size	3/8 inch
Compatibility	Trane Systems
Type	Expansion Valve
Control Type	Thermostatic Expansion Valve (TXV)

Summary

General Information and Kit Identification

General Information Details

Details the intended use, efficiency improvements, and refrigerant compatibility for the TXV kit.

Kit Identification and Inspection

Confirms kit approval for the air handler and instructs on checking for shipping damage.

Coil TXV Kit Contents and Components

Contents Inspection

Instructions to open and inspect kit contents for damage or missing items.

Kit Components List

Lists each part included in the TXV kit by quantity and description.

Installation Instructions Overview

System Preparation and Fitting Removal

Covers system charge recovery, loosening fittings, and removing Schrader valve.

TXV and O-ring Installation

Details on installing the new O-ring, hand-tightening, and final tightening of the TXV.

Equalizer Line and Bulb Attachment

Steps for connecting the equalizer line and attaching the TXV bulb to the gas line.

Final Installation Steps and Precautions

Bulb Insulation and Placement

Securing the bulb with insulation and cable tie, ensuring firm contact and isolation.

Galvanic Corrosion Prevention

Caution to prevent contact between copper and aluminum to avoid galvanic corrosion.

System Pressurization and Leak Testing

Instructions for leak testing with nitrogen and evacuating the system to 500 microns.

System Charging

Guidance on opening valves and charging the system to the correct level.