Oxbox 5AYTXVH3A1836A Txv Kit 1.5 to 3 Ton R-454B Coil and Air Handler

Product Description

The Oxbox 5AYTXVH3A1836A is a thermostatic expansion valve (TXV) kit designed for use with indoor evaporator coils and air handlers on systems charged with R-454B refrigerant. The kit covers equipment sized from 1.5 to 3 tons, making it a versatile metering-device solution across a common residential capacity range. The TXV meters liquid refrigerant entering the evaporator coil, maintaining the correct superheat level to protect the compressor and maximize system efficiency. Licensed HVAC technicians install this valve as part of a new system commissioning or as a replacement when an existing metering device has failed or when converting to R-454B compatible equipment.

This TXV kit is intended for split-system air conditioners and heat pumps that use R-454B refrigerant and are paired with indoor coils or air handlers rated between 1.5 and 3 tons. It has been listed as a matched component in Oxbox system bundles including configurations with the J5AC5036A1000 condenser and J5MXCB016AC6HC coil, as well as the J5AC5024A1000AA condenser paired with the 5JMM4A0A24S21SA wall-mount air handler. It is also associated with the Oxbox and American Standard product lines produced by Trane International Inc.

Key Features

• Rated for 1.5 to 3 ton system capacity, covering a wide residential tonnage range with a single part
• Engineered specifically for R-454B refrigerant, aligning with current low-GWP refrigerant requirements
• Thermostatic expansion valve design meters refrigerant flow to maintain proper superheat at the evaporator outlet
• TXV can be mounted in any orientation on the evaporator coil inlet for installation flexibility
• OEM kit format from Oxbox, a Trane brand, ensuring fit and function consistent with matched system submittals

Compatibility

Confirmed as a matched component for the Oxbox J5AC5036A1000 condenser with J5MXCB016AC6HC coil and for the J5AC5024A1000AA condenser with 5JMM4A0A24S21SA wall-mount air handler. Also listed under the American Standard brand by Trane International Inc. Intended for R-454B split-system coils and air handlers in the 1.5 to 3 ton range.

Installation Notes

Installation must be performed by a licensed HVAC technician holding the appropriate EPA Section 608 certification for handling refrigerants. Before servicing any refrigerant circuit, recover the system charge per EPA and local regulations, and de-energize all electrical power to the equipment. The TXV should be brazed or connected per the coil manufacturer's specifications, and the system must be evacuated and leak-checked before recharging with R-454B. Do not mix refrigerant types or use this valve with systems charged with refrigerants other than R-454B.

Technical Specifications

• Refrigerant: R-454B
• Capacity Range: 1.5 to 3 tons
• Application: Coil and air handler split systems
• Valve Type: Thermostatic Expansion Valve (TXV)

Standard Information

• Brand: Oxbox
• Manufacturer Part Number: 5AYTXVH3A1836A