A.O. Smith DB-840, DW-840, Series 120

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Directory: Catalog > Water Heaters > A.O. Smith > Parts

Parts List: A.O. Smith DB-840, DW-840, Series 120 - 128

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.

Please note: Parts for IRI Models are at the bottom of the page.

Item	Description	DB-840, DW-840
	Heat Exchanger:
13	Inlet/Outlet Manifold Modulating or Units with Gauges	200691 (new # 100059273)
14	Heat Exchanger, Copper	N/A
18	Return Bends	200699-1 (new # 100110725)
	Burner Tray:
	No. of burners in assembly	23
41	Burners, Stainless Steel	200559 (new # 100110709)
50	Flue Riser Assembly	200382-1 (new # 100110327)
59	Ignition Module	191182-2 (new # 100109879)
60a	Junction Box - DB Models	93558 (new # 100110255)
63	Thermal Balancer	98190 (new # 100110724)
	Singe Stage:
58	Redundant Gas Valve	78482-1 (new # 100027860)
68	Control Combination High Limit	192403 (new # 100109896)
68A	Thermowell	95545-1 (new # 100110604)
	Dual Stage (Not Shown):
58	Redundant Gas Valve	78482-1 (new # 100027860)
61	Manual Reset High Limit	200164 (new # 100058567)
61A	Thermowell	69039-1 (new # 100027029)
	Modulating (Not Shown):
74	Control Combination High Limit	192403 (new # 100109896)
74A	Thermowell	95545-1 (new # 100110604)
76	Temperature Control - DB Models	N/A
76	Temperature Control - DW Models	69215-1 (new # 100027052)
76A	Thermowell	N/A
	Pilot Assembly:
80	Regulator	99382 (new # 100110155)
81	Solenoid Valve	77782-3 (new # 100110195)
82	Pilot Assembly	210871-2 (new # 100109926)
	Relief Valve:
97	Hot Water Supply Boiler (DW) - 125 PSI	98883-3 (new # 100111601)
98	Hot Water Heating Boiler (DB) - 50 PSI	210451 (new # 100111921)
	Misc./Optional:
104	Flow Switch	211480 (new # 100110588)
109	Thermal Balancer	98190 (new # 100110724)
110	Thermometers	93042 (new # 100110737)
NOTES: - The manufacturer may change part numbers and availability at any time.

Download original AO Smith Parts List
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IRI Models:

The following parts are used for the IRI Models in additional to/in place of the parts above.

Item	Description	DB/DW-840
6	Pilot Assembly	210612 (new # 100110196)
NOTES: - The manufacturer may change part numbers and availability at any time.