Lennox 59W21 TXV Els PW 29614 Smith boiler and water heater

Smith boiler and water heater assemblies

Incorporating this LF series actuator linkage into your workflow ensures field-ready reliability and reduces the risk of mechanical failure in critical hot or chilled water loops

If the switch stays open despite normal airflow

What is the purpose of the Teflon sheathing on this specific model

What units does this harness typically fit

Lennox 59W21 TXV Els PW 29614 Smith boiler and water heaterThe Lennox 59W21 Thermal Expansion Valve (TXV) is a critical 8 ton metering device engineered for precision refrigerant control in high capacity commercial HVAC systems. Designed with 3 8" x 1 2" ODF sweat connections, this valve ensures accurate superheat maintenance across varying load conditions, preventing liquid floodback and protecting the compressor. The 59W21 features a 30 inch capillary tube and is officially rated as the direct replacement