🔍 Key Concepts

• Relationship between burner, air supply components, and how they’re grouped as a unit • What a register does in a boiler or furnace air system (controls and directs air around the burner) • Difference between an atomizer (fuel spraying device) and larger assemblies that include air-handling parts

💭 Think About

• Which option name best matches a complete unit that includes both the burner and the air‑controlling parts (air scoop, air doors, bladed cone)? • Is an atomizer usually a small fuel-spraying component, or does it normally include air doors and cones? • Think about where air doors and bladed cone are usually located in boiler drawings and diagrams—what are they attached to?

✅ Before You Answer

• Be sure the choice you pick can logically include all listed parts together (burner, air scoop, air doors, bladed cone) as one unit. • Confirm whether the term you select is commonly used in boiler burner air-control systems, not just a general term for a burner. • Verify that the term doesn’t describe only fuel components or only ductwork, but a combined air/burner front-end unit.