Explain stack draft and how it is controlled in a boiler system.

Explain stack draft and how it is controlled in a boiler system.

• A. Draft refers to the rate at which steam is produced.
• B. Draft is the pressure difference driving flue gases; controlled with dampers and forced/induced-draft fans, and stack height.
• C. Draft is the color of the flame; controlled by fuel type.
• D. Draft has no effect on boiler operation.

Answer: (B)