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a. The Direct Spark Ignition (DSI) Module is a 24 VAC device
designed to be the "controller" of the DSI system. When
activated by the dryer controls, this module constantly monitors
and controls the functions of the DSI system (i.e., spark
activation, gas valve off/on, flame verification, etc.).
Additionally, the DSI Module has self diagnostic capabilities.
b. The Ignitor and Flame-Probe Assembly is located in the burner
flame area and is used to ignite the gas by use of a high voltage
spark (approximately 14,000 volts) and to provide feedback
information to the DSI Module as to whether the burner flame
is evident (on).
c. The Burner Hi-Limit Switch is a thermostat type switch located
in the burner. Its function is to discontinue heat (flame) in the
event of an over temperature situation (above 330º F).
d. The Sail Switch Assembly is located on the burner, downstream
of the flame tubes. Its function is to detect whether or not there
is sufficient air flow through the dryer.
330º F Thermostat
MAN3484
Ignitor/Flame Probe Assembly
24 VAC
Direct Spark Ignition (DSI) Module
Sail Switch Assembly