What power supply is required for operation

single unit

and a liquid propane conversion kit

This unit is a direct technical equivalent to the DHY0111

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

Williams 12B40 Observation Door 322055-301 What power supply is requiredThe 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