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A.O. Smith 976 Series User Manual

A.O. Smith Water boiler

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COMMERCIAL WATER HEATER PARTS LIST

Model BTH-300A
Model BTH-400A

Series 976/977

PRINTED IN U.S.A. 0606

PART NO. 197177-002

BLOWER/BURNER ASSEMBLY

See Page 5

GAS VALVE

See Page 5

OPERATING CONTROL WIRING

See Page 3- 4

CONTROL PANEL

See Page 3

POWERED ANODE ASSEMBLY

See Page 7

CYCLONE XHE - MODEL BTH-300A/400A

See Page 2

EXHAUST ELBOW, VENT KIT & BLOWER

INTAKE PARTS

See Page 6

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