Lochinvar & A.O. Smith 100109859 Ignitor 321894-708 rotation is typically determined by

rotation is typically determined by looking at the blade from the intake or hub side

since it is a mechanical spring wound timer

or the furnace short-cycling during the startup sequence

Direct OEM Compatibility: Serves as the official replacement for RLY1097

Lochinvar & A.O. Smith 100109859 Ignitor 321894-708 rotation is typically determined byThe Lochinvar & A. O. Smith 100109859 Ignitor is a high performance silicon carbide hot surface ignitor engineered specifically for technical compatibility with premium Lochinvar Knight and A. O. Smith water heaters. As a critical OEM replacement part, it ensures rapid thermal response to bridge the gap between the call for heat and burner ignition, maintaining the tight combustion tolerances required by high efficiency condensing boilers. This