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Parts List: A.O. Smith LB-1000, LW-1000, Series 980/981

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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.

 

Waterways and Combustion Chamber Parts List

Item Description LB/LW-1000
Series 980/981
3 Combustion Chamber Assembly 192129-1 (new # 100110667)
7 Gasket, Outer 191563-1 (new # 100110587)
8 Gasket, Burner 191564-1 (new # 100110592)
9 Gasket, Inner 191563 (new # 100110587)
10 Housing Assembly 191627-4 (new # 100110435)
11 Ignitor 192334 (new # 100110899)
12 Insulation, Burner 191618 (new # 100049958)
14 O-Ring 191556-2 (new # 100049874)
15 Probe, Outlet Temp. / ECO 210572 (new # 100110742)
16 Probe, Inlet Temp 210571 (new # 100110747)
19 Sealer, Silicone (not shown) 191482-1 (new # 100049842)
20 Sensor, Flame 210421 (new # 100110707)
24 Tube Assembly, Primary (LB Models) 192225 (new # 100110291)
27 Washer, Flat #8 SST 191768 (new # 100050105)
NOTES:
- The manufacturer may change part numbers and availability at any time.

 

 

Exhaust, Drain & Water Inlet Assembly Parts List:

Item Description LB/LW 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)
13 O-Ring 191556-1 (new # 100049873)
14 Plate, Drain Seal 191626 (new # 100049965)
15 Pump Assembly, Circulator (LW Models) 192203 (new # 100112571)
17 Tube Assembly, Primary (LB Models) 192225 (new # 100110291)
19 Tubing, Condensate 191746 (new # 100109886)
20 Tubing, Pressure 191562 (new # 100049874)
27 Washer, Flat 191766 (new # 100050103)
NOTES:
- The manufacturer may change part numbers and availability at any time.

 

 

Jacket/Frame Assembly:

Item Description LB/LW-1000
3 Display Board 210219 (new # 100109984)
7 Handle 191802 (new # 100050134)
11 Locknut, Star 1953 (new # 100003894)
23 Switch, Blower Prover 191666 (new # 100110729)
24 Switch, Blocked Flue 191667 (new # 100110593)
25 Switch, Rocker 191665-1 (new # 100109882)
27 Transformer (100VA) 210449 (new # 100111982)
31 Switch, Relay 211546 (new # 100111329)
NOTES:
- The manufacturer may change part numbers and availability at any time.

 

 

Natural Gas Train / Blower Assembly:

Item Description LB/LW-1000
1 Blower 192195 (new # 100110438)
8 Flange, Observation Port 191573 (new # 100049891)
12 Gasket, Port (1/8 in. thick) 191576 (new # 100049895)
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)
37 Tee, Pressure 191633 (new # 100049966)
38 Tubing, Pressure 191562 (new # 100049874)
41 Valve, Main Gas 78481-3 (new # 100110223)
42 Valve, Firing 3423-3 (new # 100110076)
43 Valve, Solenoid Gas 192189 (new # 100050419)
NOTES:
- The manufacturer may change part numbers and availability at any time.

 

 

Propane Gas Train Assembly:

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

 

Propane By-Pass Parts List:

On LB Models the circulating pump must be between the boiler inlet and the bypass (see figure below). LW Models have pump mounted inside the jacket.

Item Description LB/LW-1000
5 Relief Valve (LW model)  
  Relief Valve (LB model) 210451-2 (new # 100111923)
7 Tee, Condensate 192040-1 (new # 100050323)
12 Valve, Manual Shutoff 3423-3 (new # 100110076)
15 Clamp, Hose 191794-1 (new # 100050128)
NOTES:
- The manufacturer may change part numbers and availability at any time.

 

 

 

 

Terminals, Wiring Harnesses:

Description  
Pressure Flow Switch Harness Assembly 210576 (new # 100061275)
Transformer Harness Assembly 210578 (new # 100109200)
Outlet Temperature Control / ECO Assembly 210572 (new # 100110742)
Inlet Temperature Control Assembly 210571 (new # 100110747)
Tank Probe (LW model) 210211-1 (new # 100109985)
NOTES:
- The manufacturer may change part numbers and availability at any time.

 

 

Download original AO Smith Parts List
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