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Parts List: A.O. Smith BTN-400, BTN-400A, Series 104

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  • Part numbers that are no longer active in the AO Smith database are not included on the chart. In addition, some part numbers have changed to a new part number. Please see AO Smith New Part Cross Reference / Discontinued Part Guidelines for further assistance.
  • You can download and print the original PDF of the A.O. Smith parts list at the bottom of the page.

 

 

Item Description
BTN-400/A
Series 104
  Blower Assembly:  
3 Blower 194408 (new # 100110631)
6 Burner, Orifice Bracket, Main 98044 (new # 100110651)
7 Burner Orifice, Main 76243-29 (new # 100110869)
  Cleanout Assembly:  
11 Gasket 99038 (new # 100109686)
12 Pressure Plate 99037 (new # 100110656)
13 Screws, Machine (6) 69852-1 (new # 100109688)
14 Control, Ignition Board 194392 (new # 100109944)
16 Cover, Cleanout 181260 (new # 100109599)
17 Cover, Control Box 194395 (new # 100110679)
20 Collar, Pipe Nipple 74060 (new # 100110642)
22 Ignitor, Flame Sensor 194405 (new # 100109948)
40 Plate, Mounting 194391 (new # 100110678)
41 Probe / ECO, Upper Thermostat 194396 (new # 100110951)
42 Probe / Lower Thermostat 194397 (new # 100110950)
43 Rod, Anode 180618-42 (new # 100109594)
44 Switch, Blower Prover 194411 (new # 100109949)
45 Switch, Low Gas Pressure 191149-5 (new # 100109877)
46 Switch, Off/On 193243 (new # 100110744)
47 Thermostat, Digital 194393 (new # 100109945)
50 Valve, Drain 26273-6 (new # 100109606)
52 Valve, T & P 192467 (new # 100110719)
53* Wire Harness - Control 194545 (new # 100109961)
54* Wire Harness - Power 194398 (new # 100109947)
NOTES:
- The manufacturer may change part numbers and availability at any time.

 

Download original AO Smith Parts List
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