AO Smith Water Heater 930 Series User Guide
PSD-3-422/B  
COMMERCIAL WATER HEATER PARTS LIST  
MODEL COF-199, 245, 315, 385, 455 & 700  
AND COF-315A, 385A, 455A & 700A  
SERIES 930/931  
A.O. SMITH WATER PRODUCTS CO., INC.  
5621 W. 115TH STREET • ALSIP, ILLINOIS 60803  
PHONE: 1-800-433-2545 • FAX: 1-800-433-2515  
www.hotwater.com • email: [email protected]  
PRINTED IN U.S.A. 1202  
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COF-199  
COF-245  
COF-315  
COF-385  
COF-455  
COF-700  
Item  
Description  
COF-315A  
COF-385A  
COF-455A  
COF-700A  
*1  
2
3
4
5
6
7
Anode........................................ 43817-38(2)...........43817-38(2) ........... 43817-38(3) ............ 43817-38(3) ............ 43817-38(4)  
Baffle, Flue ............................... 39616-13(6)........... 39616-13(7) .......... 39616-13(12) .......... 39616-13(12) .......... 39616-13(16)  
Base, Jacketw/skids ................ 76242-500 ............. 76242-500 ..............76242-500 .............. 76242-500............... 76242-500  
Bolt,Base ...................................... 41431 ....................41431 ..................... 41431 ...................... 41431 ...................... 41431  
Chamber,Combustion ............... 76508-1 ................. 76508-1 .................. 76508-1 .................. 76508-1..................... 76508  
Channel, Wire .............................. 95312-3 ................. 95312-3 .................. 95312-3 .................. 95312-3................... 95312-3  
Clamp ............................................. 94694 ....................94694 ..................... 94694 ...................... 94694 ...................... 94694  
CLEANOUTASSEMBLY  
8
9
Gasket ..........................................99038(1) ............... 99038(1) ................ 99038(2) .................. 99038(2) ................. 99038(2)  
PressurePlate .............................99037(1) ............... 99037(1) ................ 99037(2) .................. 99037(2) ................. 99037(2)  
Screw-SelfTapping .................. 69852-1(6)............. 69852-1(6) ............ 69852-1(12) ............ 69852-1(12) ............ 69852-1(12)  
Collar, Pipe 1-1/32" I.D. .............. 20172-6 ................. 20172-6 .................. 20172-6 .................. 20172-6................... 20172-6  
Collar, Pipe 1-7/8" I.D. ................ 95030-2 ................. 95030-2 .................. 95030-2 .................. 95030-2................... 95030-2  
Connector, 1/2" tubing  
10  
11  
12  
13  
to 3/4" Pipe Thread ................. 42346-3 ................. 42346-3 .................. 42346-3 .................. 42346-3................... 42346-3  
Barometric Draft Control:  
14  
Model COF-199 Only ................ 69803 .................... - - - - ....................... - - - - ........................ - - - - ........................ - - - -  
All Other Models ..................... 69803-1 ................. 69803-1 .................. 69803-1 .................. 69803-1................... 69803-1  
Cover, Cleanout Opening &  
15  
16  
Observation ............................38445(2) ............... 38445(2) ................ 38445(2) .................. 38445(2) ................. 38445(2)  
Cover, Jacket ............................ 97062-500 ............. 97062-500 ..............97062-500 .............. 97062-500............... 97062-500  
*INSULATION,  
FIBERGLASSSKIRT  
Top ......................................... 181268-14 ............. 181268-14 ..............181268-14 .............. 181268-14............... 181268-14  
Bottom ................................... 181268-19 ............. 181268-19 ..............181268-19 .............. 181268-19............... 181268-19  
*InsulationSkirt ......................... - - - - ..................... - - - - ....................... - - - - .................... 191017-2................. 191017-1  
*LABELS  
17  
Cleanout ..................................78754(1) ............... 78754(2) ................ 78754(2) .................. 78754(2) ................. 78754(2)  
Combination ............................ 192485 ..................192485 ................... 192485 .................... 192485 .................... 192485  
CopperConductor .................. 192495 ..................192495 ................... 192495 .................... 192495 .................... 192495  
Hot............................................. 192484 ..................192484 ................... 192484 .................... 192484 .................... 192484  
Relief Valve .............................. 191068 ..................191068 ................... 191068 .................... 191068 .................... 191068  
UL .............................................. 192486 ..................192486 ................... 192486 .................... 192486 .................... 192486  
Gasket, Skirt Ring ........................ 76443 ....................76443 ..................... 76443 ...................... 76443 ...................... 76443  
Insulation,Foil-Faced ................ 41175-1 ................. 41175-1 .................. 41175-1 .................. 41175-1................... 41175-1  
*Jacket, LowerHalf ................... 76697-703 ............. 76697-703 ..............76697-703 .............. 76697-703............... 76697-703  
*Jacket, Upper Half ................... 78749-700 ............. 78749-703 ..............78749-704 .............. 78749-704............... 78749-702  
Plug,Observation ....................... 41377-1 ................. 41377-1 .................. 41377-1 .................. 41377-1................... 41377-1  
Reducer, Flue:  
18  
21  
22  
23  
24  
25  
Model COF-199 Only ............. 99767-502 ................. - - - - ....................... - - - - ........................ - - - - ........................ - - - -  
All Other Models .................... 76707-500 ............. 76707-500 ..............76707-500 .............. 76707-500............... 76707-500  
Skirt Ring..................................... 76228-1 ................. 76228-1 .................. 76228-1 .................. 76228-1................... 76228-1  
Thermostat-WithE.C.O. ............. 76746-2 ................. 76746-2 .................. 76746-2 .................. 76746-2................... 76746-2  
29  
30  
31  
32  
33  
Valve, Drain ................................. 26273-6 ................. 26273-2 .................. 26273-2 .................. 26273-2................... 26273-2  
Valve, Relief ................................ 99465-4 ................. 99465-4 .................. 99465-4 .................. 99465-4................... 99465-3  
+WIRE:  
16 AWG Stranded,  
105°C, AWM & TEW:  
Black .......................................... 86578 ....................86578 ..................... 86578 ...................... 86578 ...................... 86578  
Red ............................................. 86579 ....................86579 ..................... 86579 ...................... 86579 ...................... 86579  
White .......................................... 86580 ....................86580 ..................... 86580 ...................... 86580 ...................... 86580  
Yellow ........................................ 98199 ....................98199 ..................... 98199 ...................... 98199 ...................... 98199  
Item  
* Not Illustrated  
Quantities shown in parenthesis next to part number.  
+When ordering wire, indicate length required in inches. (Example: 86578-100 equals 100" Length.)  
Part numbers underlined are recommended stock items for emergency replacement.  
Request parts from Product Service Division giving all information such as model and series number.  
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OIL BURNER  
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COF-199  
COF-245  
COF-315  
COF-385  
COF-455  
COF-700  
Item  
Description  
COF-315A  
COF-385A  
COF-455A  
COF-700A  
34  
35  
36  
37  
38  
39  
40  
41  
42  
43  
44  
45  
46  
47  
48  
49  
50  
51  
52  
53  
54  
55  
56  
Bar, Buss ......................................... 6087 ......................6087 ...................... 6087 ........................ 6087 ......................... 6087  
Bushing,Insulation ....................... 24213 ....................24213 .................... 24213 ...................... 24213 ....................... 24213  
Clips, Transformer (2 Req'd).............. 6072 ......................6072 ...................... 6072 ........................ 6072 ......................... 6072  
Control, Safety Primary-15 Sec. ........... 6215 ......................6215 ...................... 6215 ........................ 6215 ......................... 6215  
Coupling .......................................... 6080 ......................6080 ...................... 6080 ........................ 6080 ......................... 6080  
Cover, Fiber .................................... 6079 ......................6079 ...................... 6079 ........................ 6079 ......................... 6079  
Detector,Flame ............................... 5008 ......................5008 ...................... 5008 ........................ 5008 ......................... 5008  
Drawer,Assembly........................... 6099 ......................6099 ...................... 6099 ........................ 6100 ......................... 6100  
Adapter, Nozzle .......................... 24212 ....................24212 .................... 24212 ....................... - - - - ......................... - - - -  
Adapter, Nozzle ........................... - - - - ..................... - - - - ...................... - - - - ........................ 6092 ......................... 6092  
Electrode Assembly ................... 24221 ....................24221 .................... 24221 ...................... 24221 ....................... 24221  
Insulator, Electrode ................ 24210 ....................24210 .................... 24210 ...................... 24210 ....................... 24210  
Nut, Pal .................................... 24214 ....................24214 .................... 24214 ...................... 24214 ....................... 24214  
Stem, Electrode ...................... 24211 ....................24211 .................... 24211 ...................... 24211 ....................... 24211  
Pipe, Fuel ..................................... 6086 ......................6086 ...................... 6086 ........................ 6086 ......................... 6086  
Plate, Baffle ................................. 6089 ......................6089 ...................... 6089 ........................ 6090 ....................... **6090  
Tripod, Electrode Support ........ 24208 ....................24208 .................... 24208 ....................... - - - - ......................... - - - -  
Tripod, Electrode Support ......... - - - - ..................... - - - - ...................... - - - - ........................ 6088 ......................... 6088  
Gasket, Flange ................................ 6098 ......................6098 ...................... 6098 ........................ 6098 ......................... 6098  
Housing ........................................... 6076 ......................6076 ...................... 6076 ........................ 6076 ......................... 6076  
Line, Fuel - With Fittings................ 6081 ......................6081 ...................... 6081 ........................ 6082 ......................... 6082  
Motor ............................................... 6068 ......................6068 ...................... 6068 ........................ 6069 ......................... 6069  
Nozzle:  
1.35GPH-80°ACOF-199 ............. 6580 ..................... - - - - ...................... - - - - ........................ - - - - ......................... - - - -  
1.75GPH-80°ACOF-245 ............. 6581 ..................... - - - - ...................... - - - - ........................ - - - - ......................... - - - -  
2.25GPH-80°ACOF-315 ............. - - - - ......................6182 ...................... - - - - ........................ - - - - ......................... - - - -  
2.75GPH-80°ACOF-385 ............. - - - - ..................... - - - - ...................... 6083 ........................ - - - - ......................... - - - -  
3.25GPH-80°ACOF-455 ............. - - - - ..................... - - - - ...................... - - - - ........................ 6084 ......................... - - - -  
5.0GPH-80°ACOF-700 ............... - - - - ..................... - - - - ...................... - - - - ........................ - - - - ......................... 6085  
Pump, Fuel:  
57  
Single Stage .................................... 6018 ......................6018 ...................... 6018 ........................ 6018 ......................... 6018  
Body Gasket-For All Pumps .......... 6017 ......................6017 ...................... 6017 ........................ 6017 ......................... 6017  
Strainer-For All Pumps .................. 6036 ......................6036 ...................... 6036 ........................ 6036 ......................... 6036  
Ring Assembly, Fire ....................... 6096 ......................6096 ...................... 6096 ........................ 6096 ......................... 6096  
Ring Assembly, Fire ....................... - - - - ..................... - - - - ...................... - - - - ........................ 6097 ......................... 6097  
Shutter, Air-Inner ............................ 6077 ......................6077 ...................... 6077 ........................ 6077 ......................... 6077  
Shutter, Air-Outer ........................... 6078 ......................6078 ...................... 6078 ........................ 6078 ......................... 6078  
Transformer, Ignition ..................... 6075 ......................6075 ...................... 6075 ........................ 6075 ......................... 6075  
Tube, Draft....................................... 6093 ......................6093 ...................... 6093 ........................ 6094 ......................... 6094  
Valve, Fuel Oil Safety ..................... - - - - ..................... - - - - ...................... - - - - ....................... 76742 ....................... 76742  
Wheel,Blower ................................. 6070 ......................6070 ...................... 6070 ........................ 6071 ......................... 6071  
Standard Hardware Items Purchase Locally  
58  
59  
60  
61  
62  
63  
64  
65  
66  
67  
68  
** Snap off outer ring for use on COF-700 and COF-700A Models.  
Part numbers underlined are recommended stock items for emergency replacement.  
WPC PART NO. 190104 REV. 1  
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