McDonnell & Miller 354140 Replacement Probe 30067439-890 especially if mineral scale or

especially if mineral scale or heat stress has caused the original polymer to degrade

Advanced Thermal Management: The foldback configuration and low watt density minimize sheath temperature

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Common Questions Is the Carrier VSACC0400 compatible with my current thermostat

This furnace high limit switch replaces multiple legacy part numbers

McDonnell & Miller 354140 Replacement Probe 30067439-890 especially if mineral scale orThe McDonnell & Miller 354140 is a high precision PA 800 RX2 replacement probe engineered for field service reliability in low water cut off (LWCO) applications. Designed specifically for the PS 800 series and PS 850 series controls, this probe features a 1 2" NPT male threaded connection and a remote mount configuration for versatile installation in steam or hot water boilers. Built to withstand demanding boiler environments, it maintains high signal