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

  • 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.

 

 

Item Description
BTN-400/A
Series 104
3 Blower 194408 (new # 100110631)
14 Control, Ignition Board 194392 (new # 100109944)
17 Cover, Control Box 194395 (new # 100110679)
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)
44 Switch, Blower Prover 194411 (new # 100109949)
45 Switch, Low Gas Pressure 191149-5 (new # 100109877)
47 Thermostat, Digital 194393 (new # 100109945)
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.

 

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