If your controller outputs 24V AC/DC

simplifying tight-space mechanical room retrofits

meaning it opens on a temperature rise

This model uses a special internal cartridge design exclusive to the brass shell series

even when exposed to temperature fluctuations

Lochinvar & A.O. Smith 100111830 Flame Rod 322027-701 If your controller outputs 24VThe Lochinvar & A. O. Smith 100111830 Flame Rod is a critical genuine OEM flame sensor designed for precise flame rectification in high efficiency water heaters. Engineered specifically for the GDHE 50 NG and GDHE 50 Cyclone series, this component monitors the burner's flame signal to ensure the integrated control board maintains a safe combustion cycle. When a water heater flame rod becomes carbon fouled or oxidized, it fails to send the necessary