The 70-111224 features an isolated coil

A built-in SPST auxiliary switch provides an end-switch closure to signal the burner or circulator relay once the valve is fully open

and 6") for broad pipe size compatibility and a sensitivity adjusting screw for fine-tuning

Discoloration of the metal

Always measure the active fin area

Lochinvar & A.O. Smith 100208666 Cutoff Freon The 70-111224 features an isolatedThe Lochinvar & A. O. Smith 100208666 Low Water Cutoff Manual Reset is a critical safety component designed to protect high efficiency hydronic systems. As a direct OEM replacement part for WTR2530 and WTR2530K, this probe type LWCO sensor ensures the burner circuit remains de energized during low water conditions, preventing catastrophic heat exchanger failure or "dry firing." Engineered specifically for the Lochinvar Power Fin series (models PB PF