Related illustrations

1235

Coil upstream of heat exchanger

· p. 218

The illustration shows an up-flow gas furnace with an evaporator coil installed in the cold-air return, upstream of the furnace heat exchanger. Dashed outlines indicate the return duct and the supply plenum above the fur

0810

Pulse furnace heat exchanger components

· p. 134

The illustration shows the heat exchanger assembly of a pulse-type condensing gas furnace. A finned combustion chamber connects to a looping tail pipe, with gas and air intakes, a flame sensor, and a spark plug identifie