Oxbox 5AYTXVH3A4248A Txv Kit 3.5 to 4 Ton R-454B Coil and Air Handler

Product Description

The Oxbox 5AYTXVH3A4248A is a thermostatic expansion valve (TXV) kit designed for use on the evaporator side of split-system cooling equipment. It meters refrigerant flow into the indoor coil, maintaining proper superheat across a range of load conditions. This kit is rated for R-454B refrigerant and covers nominal system capacities from 3.5 to 4.0 tons. The valve body measures approximately 3.73 inches in length, 3.34 inches in depth, and 2.95 inches in height, making it a compact, direct-fit component. Oxbox is a Trane brand, and this kit is manufactured to OEM specifications for use in residential and light-commercial coil and air handler applications. Licensed HVAC technicians perform this installation.

This TXV kit is intended for indoor coil and air handler installations where R-454B is the system refrigerant. It is appropriate for residential split-system air conditioners and heat pumps operating in the 3.5 to 4.0 ton range. The 5AYTXVH3A4248A has been identified as the specified TXV kit for Oxbox and Trane systems using R-454B refrigerant at this capacity range, including configurations such as the 3.5 ton 14.3 SEER2 split-system platform that incorporates this valve as part of a complete metering device installation.

Key Features

• Rated for R-454B refrigerant, compatible with current low-GWP system requirements
• Covers 3.5 to 4.0 ton nominal system capacity
• Compact valve body: 3.73 inches long, 3.34 inches deep, 2.95 inches tall
• Designed for evaporator-side installation in coils and air handlers
• OEM-specified kit from Oxbox, a Trane brand

Compatibility

Designed for use with Oxbox and Trane indoor coil and air handler systems rated at 3.5 to 4.0 tons and using R-454B refrigerant. Verified as the specified TXV kit for 3.5 to 4.0 ton R-454B split-system configurations within the Oxbox and Trane product lines.

Installation Notes

TXV replacement is performed by a licensed HVAC technician. Recover all system refrigerant per EPA Section 608 regulations before opening the refrigerant circuit. Confirm system power is off at both the disconnect and the thermostat prior to beginning work. After installation, leak-test all connections and verify proper superheat before recharging the system with R-454B.

Technical Specifications

• Refrigerant Type: R-454B
• Nominal Capacity: 3.5 to 4.0 ton
• Overall Length: 3.73 inches
• Overall Depth: 3.34 inches
• Overall Height: 2.95 inches
• Weight: 1 pound
• Application: Indoor coil and air handler

Standard Information

• Brand: Oxbox
• Manufacturer Part Number: 5AYTXVH3A4248A