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Parts List: A.O. Smith LB-1000, Series 920/951

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By-Pass Kit Parts List:

Item Description LW/LB-1000
Series 920/951
2 Control, Tank Temperature LW Models 99058-1 (new # 1001107405)
5 Relief Valve - LW models  
5 Relief Valve - LB models 98883-2 (new # 100111923)
7 Tee, Condensate 192040-1 (new # 100050323)
12 Valve, Manual Shutoff 3423-3 (new # 100110076)
NOTES:
- The manufacturer may change part numbers and availability at any time.
** On LB models the circulating pump must be installed between the boiler inlet and the bypass. LW models have pump mounted inside jacket.

 

 

Parts List A:

Item Description LW/LB-1000
4 Combustion Chamber Assembly 192129 (new # 100110667)
10 Gasket, Outer 191563-1 (new # 100110587)
11 Gasket, Plate Assembly 191564-1 (new # 100110592)
12 Gasket, Inner 191563 (new # 100110587)
13 Housing Assembly 191627-4 (new # 100110435)
14 Igniter 192334 (new # 100110899)
15 Insulation, Burner 191618 (new # 100049958)
17 O-Ring 191556-2 (new # 100049874)
18 Power Supply, Temperature Indicator 191905 (new # 100110801)
20 Sealer, Silicone 191482-1 (new # 100049842)
23 Switch, Safety Flow 78168 (new # 100110588)
25 Tube Assembly, Primary - LB models 192225 (new # 100110291)
28 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-1000
1 Block, Terminal (4 Required) 98205 (new # 100029975)
3 Box 4 in. x 4 in. Junction 93558-4 (new # 100110255)
10 Handle, Lower Front Panel 191802 (new # 100050134)
22 Power Supply, Temperature Indicator 191905 (new # 100110801)
27 Switch, Rocker 191665 (new # 100109882)
NOTES:
- The manufacturer may change part numbers and availability at any time.

 

 

Parts List C:

Item Description LW/LB-1000
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 Gasket, 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 192203 (new # 100112571)
18 Tube Assembly, Primary - LB models 192225 (new # 100110291)
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-1000
1 Blower 192195 (new # 100110438)
4 Bracket, Blower 192223 (new # 100110670)
8 Flange, Observation Port 191573 (new # 100049891)
12 Gasket, Port (1/8 in. Thick) 191576-1 (new # 100049896)
13 Gasket, Port (1/16 in. Thick) 191576 (new # 100049895)
15 Nipple, Close 1/8 in. 191147-1 (new # 100049693)
27 Port, Observation Lower 191572 (new # 100049889)
28 Port, Observation Upper 191572-1 (new # 100049890)
32 Screw, Flathead #8-32 x 3/4 in. 191542-1 (new # 100049865)
33 Switch, Low Gas Pressure 191149-1 (new # 100109151)
36 Tee, Union 191633 (new # 100049966)
37 Tubing, Pressure 191562 (new # 100049874)
40 Valve, Main Gas 078481-3 (new # 100110223)
41 Valve, Manual Shutoff 3423-3 (new # 100110076)
42 Valve, Solenoid Gas 192189 (new # 100050419)
NOTES:
- The manufacturer may change part numbers and availability at any time.

 

 

Parts List E (LW/LB-1000 Series 951 Propane):

Item Description LB/LW-1000
3 Valve, Manual Shut-Off 3423-3 (new # 100110076)
5 Switch, Low Pressure 191149-3 (new # 100109151)
10 Elbow, 90° 1-1/4 in. 94516 (new # 100029566)
NOTES:
- The manufacturer may change part numbers and availability at any time.

 

 

Parts List F:

Item Description LB/LW-1000
2 Bushing, Snap (Small, 7/ 8 in. Hole) 98863 (new # 100030121)
4 Control, Hot Surface Ignition 191848 (new # 100109887)
12 Relay, S.P.D.T. (120 Vac) 191661 (new # 100109880)
13 Relay, S.P.D.T. (24 Vac) 191662 (new # 100109881)
19 Switch, Blocked Flue 191667 (new # 100110593)
20 Switch, Blower Prover Switch 191666 (new # 100110729)
22 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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