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COMMERCIAL WATER HEATER PARTS LIST
Model BTH-300A
Model BTH- 400A
POWERED ANODE ASSEMBLY
Series 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
PART NO. 197177-001
1
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Summary of Contents for A.O. Smith 974 Series
- Page 1 COMMERCIAL WATER HEATER PARTS LIST Model BTH-300A Model BTH- 400A POWERED ANODE ASSEMBLY Series 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...
- Page 2 CYCLONE XHE BTH 300A/400A - PARTS LIST Item Description BTH 300A 974/975 Cleanout Gasket ... 99038 ... 99038 Cover, Cleanout ... 99037 ... 99037 Cover, Left ... 194748 ...194748 Cover, Right ... 194749 ...194749 Drain Valve ... 26273-4 ... 26273-4 Labels: 800 Help Line ...
- Page 3 CYCLONE XHE BTH 300A/400A - CONTROL PANEL Item Description Board, Display Panel ... 194808 ... 194808 Bracket, Mounting Left ...194123-1 ... 194123-1 Bracket, Mounting Right ... 194123 ... 194123 Control Board, Cable Assembly (includes 4 & 4A) ... 194811 ... 195018 Control Board ...
- Page 4 DETAIL 2 - CYCLONE XHE BTH 300A /400A - CONNECTIONS (Continued)
- Page 5 Item Description Pump, Recirculation ... 196915 ... 196915 Elbow, 3/4" Male - 1" Female ... 194872 ... 194872 Di-Electric Union ... 196941 ... 196941 Vent, Automatic Air ... 194830 ... 194830 Tube, Inlet ... 194820 ... 194820 Tube, Closed End Dip ... 194924 ... 194924 Item RECIRCULATING SYSTEM DETAIL 4 - GAS VALVE...
- Page 6 EXHAUST ELBOW, VENT KIT & BLOWER INTAKE PARTS Item Description EXHAUST ELBOW AND FITTINGS Adapter, Hose Fitting ... 192472 ... 192472 Elbow, 90° ... 195294 ... 195294 Nipple, Pipe, Closed ... 194558 ... 194588 Plug, Hex ... 194560 ... 194560 Tee ...
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Page 7: Blower/Burner - Assembly
BLOWER/BURNER - ASSEMBLY Item Description Burner ... 194779 ... 194998 Blower/Motor Assembly ... 194746 ... 194746 Flange-Burner ... 194960 ... 194960 Gasket ... 194817 ... 194817 Gasket, Burner ... 194777 ... 195016 Gasket-Viewport ... 194827 ... 194827 Ignitor ... 192334 ... 192334 Screw, #8-18 x 1/2 ... - Page 8 Anode ... 194787 ... 194787 Anode Wire, 28" ... 194925 ... 194925 Control Box... 194857 ... 194857 LED w. Lead Wire ... 194959 ... 194959 A.O. Smith Water Heater Parts Fulfillment POWERED ANODE ASSEMBLY 125 Southeast Parkway Franklin, TN 37068 1-800-433-2545 www.hotwater.com...