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Parts List: A.O. Smith GB-2100, GW-2100; Series 300/305

  • 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.

 

Combustion Chamber Components:

Item Description GB/GW-2100
Series 300/305
2 Blower Assembly, Large 211096 (new # 100110413) (qty. 3)
5 Burner, 60 mm 210757 (new # 100110710) (qty. 18)
6 Burner Assembly 211306 (new # 100110692) (qty. 3)
9 Flame Sensor 192682 (new # 100109908) (qty. 4)
13 Gas Train, 4 & 5 Burner - Natural Gas 211081 (new # 100110412) (qty. 3)
19 Gasket, Heat Exchanger (qty. 2) 210779 (new # 100061541)
24 Ignitor 192334 (new # 100110899) (qty. 2)
34 Observation Post Assembly (qty. 2) 98760 (new # 100110431)
54 Switch, Blowed Flue 210908-2 (new # 100110589)
55 Switch, Differential 211094 (new # 100110001) (qty. 3)
56 Switch, Differential - Propane 211094-1 (new # 100110001) (qty. 3)
57 Switch, Low Gas - Natural Gas 191149-1 (new # 100109151)
57 Switch, Low Gas - Propane 191149-3 (new # 100109151)
NOTES:
- The manufacturer may change part numbers and availability at any time.

 

Gas Train Gas Valves Used Description
211081 (new # 100110412) 191956-2 (new # 100109890) Gas Valve, Natural Gas
  191956-1 (new # 100109889) Gas Valve, Propane
  192454-1 (new # 100109958) Gas Valve, Propane
NOTES:
- The manufacturer may change part numbers and availability at any time.

 

 

Jacket Assembly Components:

Item Description GB/GW-2100
Series 300/305
8 Gasket, Vent Adaptor (Air Inlet) 211049-2 (new # 100061872)
32 Switch, Rocker 191665-1 (new # 100109882)
NOTES:
- The manufacturer may change part numbers and availability at any time.

 

Water Heater Connections:

Item Description GB-2100 or GW-2100
2 Inlet Temp Conduit Assembly 210180-1 (new # 100060723)
8 Relief Valve - 125 PSI (GW-2100) 98883-7 (new # 100110427)
9 Relief Valve - 50 PSI (GB-2100) 210451-2 (new # 100111923)
11+ Tank Probe (GW-2100) 210211-1 (new # 100109985)
NOTES:
- The manufacturer may change part numbers and availability at any time.
+ Not Illustrated

 

 

Control Box Assembly:

Item Description GB/GW-2100
Series 300/305
2 ICB Circuit Board 210749 (new # 100109988)
4 Switch - Relay 211546 (new # 100111329)
7 Transformer, 250 VAC 211673 (new # 100111942)
NOTES:
- The manufacturer may change part numbers and availability at any time.

 

 

Central Control Board Harness Assemblies:

Item Description GB/GW-2100
6 CN 06 Intercommunications Cable 211054 (new # 100061878)
NOTES:
- The manufacturer may change part numbers and availability at any time.

 

Ignition Control Board Harness Assemblies:

Item Description GB/GW-2100
Series 300/305
10 CN 11/12 Communications Cable 211054 (new # 100061878) (qty. 3)
NOTES:
- The manufacturer may change part numbers and availability at any time.

 

 

IRI/CSD-1 Components:

Item Description GB/GW-2100
Series 300/305
3 High Pressure Switch - Natural Gas N/A
3 High Pressure Switch - Propane 192527 (new # 100109901) (qty. 5)
5 Pilot Shut-Off Valve 200683 (new # 100059254)
NOTES:
- The manufacturer may change part numbers and availability at any time.
- CSD-1 and IRI Models substitute the following part numbers for the Gas Train Assemblies shown at the top of the page: Item 11 substitute with 211082-2; Item 12 substitute with 211082-3; Item 13 substitute with 211081-2; Item 14 substitute with 211081-3.

 

 

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