Lochinvar & A.O. Smith 100277799 Probe 320788-702 by restoring the critical induced

by restoring the critical induced draft required for the combustion cycle

or 4-wire installations where a C-wire may not be present

the switch will automatically return to its original state

Robust Construction: The vapor-actuated design is less susceptible to ambient temperature fluctuations at the control head compared to liquid-filled units

Lochinvar & A.O. Smith 100277799 Probe 320788-702 by restoring the critical inducedThe Lochinvar & A. O. Smith 100277799 Probe is a critical safety component engineered for precision low water cut off (LWCO) monitoring in high efficiency commercial and residential heating systems. Designed to integrate seamlessly with the Lochinvar FBL and FBN series boilers, this probe detects the presence of water via conductivity to prevent dry fire conditions that cause catastrophic heat exchanger failure. As a veteran technician knows,