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Parts List: A.O. Smith LB-500, LW-500; Series 920/951

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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.

 

By-Pass Kit Parts List:

Item Description LW/LB-500
Series 920, 951
9+ Control, Tank Temperature (LW Models) 099058-1 (new # 1001107405)
13 Tee, Condensate 192040-1 (new # 100050323)
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-500
4 Combustion Chamber Assembly 191529 (new # 100110285)
8 Coupling, Flexible with Gasket 191780 (new # 100050119)
10 Gasket, Outer 191563-1 (new # 100110587)
11 Gasket, Plate Assembly 191564-1 (new # 100110592)
12 Gasket, Inner 191563 (new # 100110587)
13 Housing Assembly 191627 (new # 100110434)
14 Igniter 191526 (new # 100110899)
15 Insulation, Burner 191618 (new # 100049958)
17 O-Ring 191556 (new # 100049872)
18 Power Supply, Temperature Indicator 191905 (new # 100110801)
20 Sealer, Silicone 191482-1 (new # 100049842)
21 Spacer, Ring 191554 (new # 100049869)
22 Switch, Safety Flow 78168 (new # 100110588)
27 Washer, Flat #8 SST 191768 (new # 100050105)
NOTES:
- The manufacturer may change part numbers and availability at any time.

 

 

Parts List B:

Item Description LB/LW-500
5 Control, Blower Speed 191922 (new # 100050201)
10 Handle, Lower Front Panel 191802 (new # 100050134)
13 Locknut, Star 1953 (new # 100003894)
25 Power Suuply, Temperature Indicator 191905 (new # 100110801)
26 Relay, Blower Speed 191664 (new # 100049989)
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-500
1 Clamp, Hose (Large) 191794-1 (new # 100050128)
3 Connector, Female Bulkhead 191744 (new # 100050079)
4 Connector, Port 191745 (new # 100050080)
7 Elbow 191664 (new # 100049989)
8 Gaskt, Blocked Flue 191767 (new # 100050104)
14 O-Ring 191556-1 (new # 100049873)
15 Plate, Drain Seal 191626 (new # 100049965)
16 Pump Assembly, Circulator (LW Models only) 191552-1 (new # 100109999)
20 Tubing, Condensate 191746 (new # 100109886)
21 Tubing, Pressure 191562 (new # 100049874)
28 Washer, Flat 191766 (new # 100050103)
NOTES:
- The manufacturer may change part numbers and availability at any time.

 

 

Parts List D:

Item Description LB/LW-500
3 Blower Manifold Assembly 191832 (new # 100110799)
9 Flange, Observation Port 191573 (new # 100049891)
10 Gasket, Blower 191623 (new # 100049963)
12 Gasket, Manifold 191565 (new # 100049887)
13 Gasket, Port (1/8 in. Thick) 191576-1 (new # 100049896)
14 Gasket, Port (1/16 in. Thick) 191576 (new # 100049895)
16 Nipple, Close 1/8 in. 191147-1 (new # 100049693)
25 Port, Observation Lower 191572 (new # 100049889)
26 Port, Observation Upper 191572-1 (new # 100049890)
30 Screw, Flathead #8-32 x 3/4 in. 191542-1 (new # 100049865)
31 Switch, Low Pressure 191149-1 (new # 100109151)
34 Tee, Union 191633 (new # 100049966)
35 Tubing, Pressure 191562 (new # 100049874)
45 Nipple, 1 in. Close 1342 (new # 100110144)
NOTES:
- The manufacturer may change part numbers and availability at any time.

 

 

Parts List F:

Item Description LB/LW-500
1 Block, Terminal (4 Required) 98205 (new # 100029975)
2 Box, 4 in. x 4 in. Junction 93558-4 (new # 100110255)
4 Bushing, Snap (Small 7/8 in. Hole) 98863 (new # 100030121)
6 Control, Hot Surface Ignition 191848 (new # 100109887)
7 End Cap, Terminal 98206 (new # 100029976)
11 Lucknet, Star 1953 (new # 100003894)
27 Switch, Blocked Flue 191667 (new # 100110593)
28 Switch, Blower Prover Switch 191666 (new # 100110729)
30 Transformer, 40 VA 99238 (new # 100110732)
31 Tubing, Pressure 191562 (new # 100049874)
NOTES:
- The manufacturer may change part numbers and availability at any time.

 

 

Download original AO Smith Parts List
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