A.O. Smith 974 Series User Manual

1

PRINTED IN THE U.S.A. 0206

PART NO. 197177-001

BLOWER/BURNER ASSEMBLY

See Page 7

GAS VALVE

See Page 5

RECIRCULATING SYSTEM

See Page 5

OPERATING CONTROL WIRING

See Page 4

CONTROL PANEL

See Page 3

POWERED ANODE ASSEMBLY

See Page 8

CYCLONE XHE - MODEL BTH-300A/400A

See Page 2

EXHAUST ELBOW, VENT KIT & BLOWER

INTAKE PARTS

See Page 6

COMMERCIAL WATER HEATER PARTS LIST

Model BTH-300A

Model BTH- 400A

Series 974/975