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Parts List: A.O. Smith BTH-400A, Series 970

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  • You can download and print the original PDF of the A.O. Smith parts list at the bottom of the page.

 

Cyclone XHE BTH 300A/400A Parts List

Item Description
BTH 400A
Series 970/971
1 Cleanout Gasket 99038 (new # 100109686)
2 Cover, Cleanout 99037 (new # 100110656)
4 Cover, Right 194749 (new # 100052204)
9 Temperature and Pressure Relief Valve 99383-3 (new # 100110739)
NOTES:
- The manufacturer may change part numbers and availability at any time.
- Standard hardware items may be purchased locally.

 

 

Cyclone XHE BTH 300A/400A Control Panel

Item Description
BTH 400A
Series 970/971
5 Junction Box Assembly 194126 (new # 100109942)
11 Switch, Off/On 193243 (new # 100110744)
- Standard hardware items may be purchased locally

 

 

Recirculating System

Item Description
BTH 300A
Series 970/971
3 Hose, Flexible 194912 (new # 100110814)
7 Pump, Recirculation 194799 (new # 100111734)
11 Vent, Automatic Air 194830 (new # 100052273)
- Standard hardware items may be purchased locally.

 

Detail 4 - Gas Valve

Item Description
BTH 300A
Series 970/971
4 Switch, Low Gas Pressure 191149-6 (new # 100109878)
4 Switch, Low Gas Pressure - Propane 191149-4 (new # 100109876)
6 Valve, Natural Gas 194536-5 (new # 100109959)
6 Valve, Propane 194536-6 (new # 100110885)
8 Orifice Holder 192447 (new # 100110892)

 

 

Exhaust Elbow, Vent Kit and Blower Intake Parts

Item Description
BTH 300A
Series 970/971
1 Adapter, Hose Fitting 192472 (new # 100109900)
2 Elbow, 90° 194836 (new # 100111030)
3 Nipple, Pipe, Closed 194558 (new # 100052004)
4 Plug, Hex 194560 (new # 100052006)
5 Tee 194559 (new # 100052005)
6 Tubing 191746-72 (new # 100109886)
7 Connector, Exhaust 192636 (new # 100110947)
8 Hose Clamp, 3 in. 192696 (new # 100110948)
9 Hose Clamp, 4.5 in. 192697 (new # 100110949)
10 Elbow with Screen 192815 (new # 100108686)
11 Elbow, 45° x 3.5 in. dia. 181901 (new # 100042127)
12 Screen 181662 (new # 100110830)
13 Intake Terminal 182167 (new # 100109923)
14 Wall Plates (2 required) 181557 (new # 100109820)
15 Silicone Sealer, 2 oz. Tube 181564 (new # 100109821)
19 Vent Terminal, Intake 192815 (new # 100108686)

 

 

Blower/Burner Assembly

Item Description
BTH 300A
Series 970/971
1 Burner 194779 (new # 100111863)
2 Blower/Motor Assembly 194746 (new # 100109964)
4 Gasket 194817 (new # 100111744)
5 Gasket, Burner 194777 (new # 100052495)
6 Gasket, Viewport 194827 (new # 100110902)
7 Ignitor 192334 (new # 100110899)
11 Sensor, Flame 194776-1 (new # 100109966)
12 Window, Observation 98758-3 (new # 100110901)
Standard hardware items may be purchases locally.

 

 

Powered Anode Assembly

Item Description
BTH 300A
Series 970/971
1 Anode 194787 (new # 100111023)
2 Anode Wire, 28 in. 194925 (new # 100052332)
3 Control Box 194857 (new # 100109972)
4 LED with Lead Wire 194959 (new # 100052344)
NOTES:
- The manufacturer may change part numbers and availability at any time.

 

 

Download original AO Smith Parts List
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