Smoke chamber - wall slope

Heating · Wood Burning Fireplaces · printed page 189 (PDF page 190)

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Book index entries

Smoke Chamber – Wall Slope Slope for Smoke Chamber and Fireplace Wood Fireplaces

Text in the illustration

masonry chimney
chimney flue
smoke chamber
45° max.-
30° is preferable
damper
fireplace
a symmetrical smoke chamber with side
and front slopes not exceeding 45° off
vertical (30° is better) is the best design
an asymmetrical smoke chamber
(especially with one side vertical and the
other steeply angled off vertical) can lead
to draft problems

Generated explanation

Two cutaway diagrams compare smoke chamber wall slopes above wood-burning fireplaces in masonry chimneys. The left diagram, marked with a green check, shows a symmetrical smoke chamber tapering toward a centered chimney flue. Its annotation recommends side and front slopes no greater than 45° off vertical, with 30° preferred. The right diagram, marked with a red X, shows an asymmetrical chamber leading to an offset flue, with one side vertical and the other steeply angled off vertical. The caption warns that this arrangement can lead to draft problems; both diagrams identify the damper below the smoke chamber.

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· p. 166

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