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Parts List: A.O. Smith LB-750, LW-750; Series 920/951

  • 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.

 

By-Pass Kit Parts List:

Item Description LW/LB-750
Series 920, 951
3 Relief Valve:  
  - LW Models  
  - LB Models 98883-2 (new # 100111923)
9+ Control, Tank Temperature (LW Models) 099058-1 (new # 1001107405)
NOTES:
- The manufacturer may change part numbers and availability at any time.
+ Not shown
** On LB models the circulating pump must be installed between the boiler inlet and the bypass. LW models have the pump mounted inside the jacket.

 

 

Parts List A:

Item Description LB/LW-750
8 Coupling, Flexible with Gasket 191780 (new # 100050119)
14 Igniter 191526 (new # 100110899)
21 Spacer, Ring 191554 (new # 100049869)
22 Switch, Safety Flow 78168 (new # 100110588)
NOTES:
- The manufacturer may change part numbers and availability at any time.

 

 

Parts List B:

Item Description LB/LW-750
26 Relay, Blower Speed 191661 (new # 100109880)
29 Switch, Rocker 191665 (new # 100109882)
NOTES:
- The manufacturer may change part numbers and availability at any time.

 

 

Parts List C:

Item Description LB/LW-750
20 Tubing, Condensate 191746 (new # 100109886)
NOTES:
- The manufacturer may change part numbers and availability at any time.

 

 

Parts List D:

Item Description LB/LW-750
3 Blower Manifold Assembly 191832 (new # 100110799)
25 Port, Observation Lower 191572 (new # 100049889)
31 Switch, Low Pressure 191149-1 (new # 100109151)
NOTES:
- The manufacturer may change part numbers and availability at any time.

 

 

Parts List E, LB/LW-750 Series 951 Propane:

Item Description LB-LW-750
5 Switch, Low Pressure 191149-3 (new # 100109151)
NOTES:
- The manufacturer may change part numbers and availability at any time.

 

 

Parts List F:

Item Description LB/LW-750
2 Box, 4 in. x 4 in. Junction 93558-4 (new # 100110255)
6 Control, Hot Surface Ignition 191848 (new # 100109887)
28 Switch, Blower Prover Switch 191666 (new # 100110729)
NOTES:
- The manufacturer may change part numbers and availability at any time.

 

 

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