A.O. Smith 974 Series, 975 Series manual Model BTH-300A Model BTH-400A

COMMERCIAL WATER HEATER PARTS LIST

Model BTH-300A

Model BTH-400A

POWERED ANODE ASSEMBLYSeries 974/975 See Page 8

OPERATING CONTROL WIRING

See Page 4

CYCLONE XHE - MODEL BTH-300A/400A

See Page 2

GAS VALVE

See Page 5

RECIRCULATING SYSTEM

See Page 5

BLOWER/BURNER ASSEMBLY

See Page 7

CONTROL PANEL	EXHAUST ELBOW, VENT KIT & BLOWER
See Page 3	INTAKE PARTS
	See Page 6

PRINTED IN THE U.S.A. 0206

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PART NO. 197177-001