Lochinvar & A.O. Smith 100208561 Flue Sensor 321042-401 making it suitable for discharge

making it suitable for discharge and hot gas bypass applications

this tool can be used with a USB-to-RS232 adapter

allowing for remote sensing and flexible installation in walk-in coolers or commercial HVAC units

preventing valve chatter and ensuring responsive performance under high-duty cycles

Key Benefits Precise Actuator Response: Integrates a positive positioning relay to ensure exact 3/4-inch travel for superior flow modulation

Lochinvar & A.O. Smith 100208561 Flue Sensor 321042-401 making it suitable for dischargeThe Lochinvar & A. O. Smith 100208561 Flue Sensor is a critical high temperature monitoring component engineered for precision in FTXL FTX 400 850(N L) heating boilers and Aquas AP400 850 commercial pool package heaters. As a direct replacement for TST20026K and 100170554, this updated flue temperature sensor provides real time thermal feedback to the control board to verify safe combustion levels and prevent exhaust system overheating. For a