Lochinvar & A.O. Smith 100112168 Switch 321042-401 you must use the longer

you must use the longer bolts typically included in the 06D unloader packages to accommodate the increased head height

eliminating the need for separate relay models

you will encounter this need when a replacement electronic control board or ignition component utilizes a 5-pin harness

The Functional Devices RIB2421C is a contractor-grade enclosed pilot relay designed for seamless integration into building automation systems (BAS) and HVACR control circuits

Lochinvar & A.O. Smith 100112168 Switch 321042-401 you must use the longerThe Lochinvar & A. O. Smith 100112168 Switch is a critical safety component designed for low gas pressure detection in high efficiency heating systems. As a genuine OEM replacement part, this low gas pressure switch is engineered to monitor the incoming fuel supply and interrupt the burner circuit if pressure drops below the required threshold, preventing unstable combustion and potential equipment damage. It is a direct fit solution for Lochinvar