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

  • Links are included to the parts that are available to be purchased.
  • Parts that are not listed in the chart are either discontinued by AO Smith or are not available for purchase.
  • The item number in the first column corresponds to the location of the part in the line art drawing below the chart.

 

Cyclone XHE BTH 300A/400A Parts List

Item Description
BTH 400A
Series 970/971
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)
 

 

 

Recirculating System

Item Description
BTH 300A
Series 970/971
3 Hose, Flexible 194912 (new # 100110814)
7 Pump, Recirculation 194799 (new # 100111734)
- 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
2 Elbow, 90° 194836 (new # 100111030)
6 Tubing 191746-72 (new # 100109886)
7 Connector, Exhaust 192636 (new # 100110947)
12 Screen 181662 (new # 100110830)
13 Intake Terminal 182167 (new # 100109923)

 

 

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)
7 Ignitor 192334 (new # 100110899)
11 Sensor, Flame 194776-1 (new # 100109966)
Standard hardware items may be purchases locally.

 

 

Powered Anode Assembly

Item Description
BTH 300A
Series 970/971
1 Anode 194787 (new # 100111023)
3 Control Box 194857 (new # 100109972)
NOTES:
- The manufacturer may change part numbers and availability at any time.

 

 

Download original AO Smith Parts List
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