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Directory: Catalog > Water
Heaters > A.O. Smith > Parts
Parts List: A.O. Smith GB-1500, GW-1500; 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-1500
Series 300/305 |
| 2 |
Blower Assembly, Large |
211096 (new # 100110413) (qty. 2) |
| 5 |
Burner, 60 mm |
210757 (new # 100110710) (qty. 13) |
| 6 |
Burner Assembly |
211306 (new # 100110692) (qty. 2) |
| 9 |
Flame Sensor |
192682 (new # 100109908) (qty. 3) |
| 13 |
Gas Train, 4 & 5 Burner - Natural Gas |
211081 (new # 100110412) (qty. 3) |
| 19 |
Gasket, Heat Exchanger (qty. 2) |
210779 (new # 100061541) |
| 23 |
Heat Exchanger Assembly (GW model) |
210750-2 (new # 100110344) |
| 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. 2) |
| 56 |
Switch, Differential - Propane |
211094-1 (new # 100110001) (qty. 2) |
| 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-1500
Series 300/305 |
| 7 |
Gasket, Vent Adaptor (qty. 2) |
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-1500 or GW-1500 |
| 2 |
Inlet Temp Conduit Assembly |
210180-1 (new # 100060723) |
| 6 |
Pump - 1/2 HP Volute (GW-1500) |
211324 (new # 100111533) |
| 9 |
Relief Valve - 50 PSI (GB-1500) |
210451-2 (new # 100111923) |
| 11+ |
Tank Probe (GW-1500) |
210211-1 (new # 100109985) |
NOTES:
- The manufacturer may change part numbers and availability at any time. |
Control Box Assembly:
| Item |
Description |
GB/GW-1500
Series 300/305 |
| 2 |
ICB Circuit Board |
210749 (new # 100109988) |
| 4 |
Switch - Relay |
211546 (new # 100111329) |
| 6 |
Transformer, 150 VAC |
211477 (new # 100110005) |
NOTES:
- The manufacturer may change part numbers and availability at any time. |
Central Control Board Harness Assemblies:
| Item |
Description |
GB/GW-1500
Series 300/305 |
| 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-1500
Series 300/305 |
| 10 |
CN 11/12 Communications Cable |
211054 (new # 100061878) (qty. 2) |
NOTES:
- The manufacturer may change part numbers and availability at any time. |
IRI/CSD-1 Components:
| Item |
Description |
GB/GW-1500
Series 300/305 |
| 3 |
High Pressure Switch - Natural Gas |
N/A |
| 3 |
High Pressure Switch - Propane |
192527 (new # 100109901)(qty. 3) |
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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