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Parts List: A.O. Smith XCV-40

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• Part numbers that are no longer active in the AO Smith database are not included on the chart. In addition, some part numbers have changed to a new part number. Please see AO Smith New Part Cross Reference / Discontinued Part Guidelines for further assistance.
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Item	Description	XCV-40
1	Air Intake Screen	183159-000 (new # 100109216)
2	Anode Rod	183523-033 (new # 100109594)
3	Burner Assembly, Natural Gas	183222-026 (new # 100109316)
3	Burner Assembly, Propane	183222-027 (new # 100109318)
4	Burner Head with Door Insulation, Natural Gas	183504-000 (new # 100109206)
4	Burner Head with Door Insulation, Propane	182730-000 (new # 100109226)
5	Burner Orifice with Door Insulation, Natural Gas	181508-033 (new # 100108635 or 100109266)
5	Burner Orifice with Door Insulation, Propane	181791-051 (new # 100108721 or 100109241)
8	Drain Valve, Brass	026273-003 (new # 100109800)
9	Flue Baffle Assembly	039331-053 (new # 100109371)
10	Flue Restrictor	034894-000 (new # 100110078)
11	Gas Control Valve, Natural Gas	182791-004 (new # 100109217)
11	Gas Control Valve, Propane	182792-000 (new # 100109219)
12	Heat Trap Assembly	184792-003 (new # 100109433)
14	Inner Door Gasket	183162-000 (new # 100109214)
15	Inner Door with Door Insulation	183425-001 (new # 100109213)
17	Outer Door	183458-000 (new # 100109299)
18	Piezo Ignitor Assembly	183798-000 (new # 100109221)
19	Pilot Assembly with Grommet and Door Insulation, Natural Gas	183824-190 (new # 100109295)
19	Pilot Assembly with Grommet and Door Insulation, Propane	183824-172 (new # 100109253)
20+	Pipe Insulation	181639-003 (new # 100108808)
22+	Temperature - Pressure Relief Valve Insulation	183256-000 (new # 100109432)
23	Temperature - Pressure Relief Valve	076527-000 (new # 100108279)
25	Viewport Assembly	184470-000 (new # 100109224)
26	20 in. Dia. Aluminum Drain Pain with Side Drain (optional)	23912-A (new # 100108459)
26	22 in. Dia. Aluminum Drain Pain with Side Drain (optional)	23913-A (new # 100108616)
26	28 in. Dia. Aluminum Drain Pain with Side Drain (optional)	23914-A (new # 100108615)
NOTES: - The manufacturer may change part numbers and availability at any time. + Not Illustrated

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