High-Flow Performance: The 13

This relay is the professional-grade direct replacement for R8222B1067/U

Does this valve body include the electrical coil

Common indicators include failure to ignite despite a verified spark or hot surface igniter glow

What power supply is required for operation

Williams 12B40 Observation Door 322055-301 High-Flow Performance: The 13The Williams 12B40 Observation Door is a critical OEM replacement part designed for high performance direct vent and gravity fed wall furnaces. This assembly, also commonly referred to as a peep hole cover assembly, provides technicians with a secure access point to monitor the pilot flame and combustion status without compromising the envelope of the combustion chamber. Engineered for a precise fit, the kit includes the durable observation door, a