Related illustrations

0803

High efficiency furnaces have long heat exchangers

· p. 133

The illustration shows a schematic cutaway of a high-efficiency gas furnace with a long, serpentine primary heat exchanger and a secondary heat exchanger below it. Combustion air enters from above at the burner, whose fl

0806

Venting for high-efficiency furnaces

· p. 133

The illustration shows a cutaway of a high-efficiency condensing gas furnace with a burner, heat exchangers, house air blower, and induced draft fan. Arrows trace combustion gases through the heat exchanger assembly and

0808

Safety devices for high-efficiency furnaces

· p. 134

The illustration shows a cutaway schematic of a high-efficiency condensing gas furnace with a burner, serpentine heat exchanger, secondary heat exchanger, induced draft fan, and house air blower. Arrows indicate combusti

0805

Maximizing temperature differences

· p. 133

The illustration shows a high-efficiency gas furnace with a burner, serpentine primary heat exchanger, secondary heat exchanger, and house air blower below. Arrows trace combustion gases through the primary exchanger and