Related illustrations

0730

Three kinds of draft

· p. 116

Three cross sections compare natural, induced, and forced draft arrangements in forced-air gas furnaces. The natural-draft furnace has an atmospheric burner, a heat exchanger, and a draft hood admitting dilution air into

0800

Three kinds of draft

· p. 132

Three cross-sectional diagrams compare natural, induced, and forced draft in forced-air gas furnaces. Each furnace has a burner beneath a heat exchanger, a vent connector above, and a separate house air blower below. The