A.O. Smith BTH 400 - Features and Components; Basic Operation

7
BASIC OPERATION
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BURNER
ASSEMBL
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BURNER
(radial design)
HEAT
EXCHANGER
INTAKE AIR
(combustion air)
CONNECTION
4 INCH PVC
HELICAL
COIL
VENT (exhaust)
OUTLET
Figure 1
FEATURES AND COMPONENTS
MODULATION
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BLOWER/BURNER ASSEMBLY DETAIL
SPARK
IGNITER
FLAME SENSOR
COMBUSTION
BLOWER
MAIN BURNER
(radial design)
BLOWER
FLANGE
INTAKE AIR
(combustion air)
CONNECTION
4 INCH PVC
Figure 2
Spark Electrode
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Flame Sensor
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