What the chimney does

The chimney removes combustion products from the boiler and helps maintain proper flue gas flow.

Factors affecting operation

  • Chimney height and cross-section.
  • Flue gas temperature.
  • Bends and constrictions.
  • Cleanliness of the inner surface.

Why it is important

Poor operation can cause flue gas backflow, incomplete combustion, or burner problems.