Heat Controller Llc 26Z70 Txv R454B 1.5-3 Ton

Product Description

The HEAT CONTROLLER LLC 26Z70 is a thermostatic expansion valve (TXV) engineered for use with R454B refrigerant in LE Series systems rated from 1.5 to 3 tons. The TXV meters refrigerant flow into the evaporator coil, maintaining the correct superheat level across the operating range of the system. It is a precision metering device installed in the refrigerant circuit by a licensed HVAC technician. Proper refrigerant flow control is critical to system efficiency and coil performance, making TXV selection and correct sizing essential during installation or replacement service.

The 26Z70 is designed for residential and light commercial split-system air conditioning and heat pump applications using R454B, a low-GWP A2L refrigerant increasingly common in new equipment. It is sized for systems from 1.5 to 3 tons and is intended for use within the LE Series product family. Installers working on LE Series equipment should confirm that the valve capacity matches the nominal tonnage of the specific unit being serviced before installation.

Key Features

• Compatible with R454B refrigerant, a low-GWP A2L alternative refrigerant
• Capacity range covers 1.5 to 3 ton systems
• Designed for LE Series equipment
• Meters refrigerant flow to maintain proper evaporator superheat
• OEM-style replacement for field service and new installation

Compatibility

Designed for use with R454B refrigerant in LE Series systems from 1.5 to 3 tons. No additional compatible model numbers were specified in the product data.

Installation Notes

Installation should be performed by an EPA Section 608 certified HVAC technician with experience handling A2L refrigerants, which require additional safety precautions due to mild flammability. Recover all refrigerant and de-energize the system before replacing the TXV. Confirm proper superheat after installation using calibrated gauges and a thermocouple. Follow all applicable local mechanical codes and the equipment manufacturer's installation instructions.

Technical Specifications

• Refrigerant: R454B
• Capacity Range: 1.5 to 3 tons
• Series: LE Series

Standard Information

• Brand: HEAT CONTROLLER LLC
• Manufacturer Part Number: 26Z70