Lennox 42W39 TXV 322838-752 Reliable Monitoring: Continuously checks the

Reliable Monitoring: Continuously checks the flame signal and high-limit switches to ensure safe daily operation

the integrated output test connection facilitates efficient field adjustments without disrupting the control loop

the dial includes a dedicated frost setting (marked with a "*" symbol) to maintain a minimum temperature of approximately 45°F

The 40-watt power rating provides sufficient heat to keep the sump temperature above the ambient saturated suction temperature without excessive energy draw

Lennox 42W39 TXV 322838-752 Reliable Monitoring: Continuously checks theThe Lennox 42W39 is a high performance 3 ton thermal expansion valve (TXV) engineered for precise refrigerant metering in R410A systems. Designed to replace Lennox part 100679 26, this valve features a 5 8" ODF inlet and a 1 2" ODF outlet, ensuring a secure, leak proof solder connection. For any technician troubleshooting a 3 ton air conditioner or heat pump, this OEM component is critical for maintaining correct superheat levels across varying load