Refractory/fire pot

Heating · Oil Furnaces · printed page 139 (PDF page 140)

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Text in the illustration

cold air return
hot air supply
heat exchanger
air filters
blower motor
blower
refractory
oil burner
cross section
look for cracks or deterioration in the refractory material
perspective

Generated explanation

The illustration shows a cross section of an oil furnace alongside an enlarged perspective of its refractory fire pot and oil burner. The furnace includes a cold-air return, air filters, a belt-driven blower, a heat exchanger, and a hot-air supply. The burner projects a flame into the refractory-lined combustion chamber. The enlarged view shows a cylindrical refractory chamber with the burner entering through its side. Arrows identify cracking and localized deterioration in the refractory material as conditions to inspect.

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