
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
PRINTED IN U.S.A. 1202
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: parts@hotwater.com

COF-199 COF-315 COF-385 COF-455 COF-700
Item Description COF-245 COF-315A COF-385A COF-455A COF-700A
*1 Anode ........................................ 43817-38(2) ...........43817-38(2) ........... 43817-38(3) ............ 43817-38(3) ............ 43817-38(4)
2 Baffle, Flue ............................... 39616-13(6) ........... 39616-13(7) .......... 39616-13(12) .......... 39616-13(12) .......... 39616-13(16)
3 Base, Jacket w/skids ................ 76242-500 ............. 76242-500 .............. 76242-500 .............. 76242-500 ............... 76242-500
4 Bolt, Base ...................................... 41431 .................... 41431 ..................... 41431 ...................... 41431 ...................... 41431
5 Chamber, Combustion ............... 76508-1 ................. 76508-1 .................. 76508-1 .................. 76508-1 ..................... 76508
6 Channel, Wire .............................. 95312-3 ................. 95312-3 .................. 95312-3 .................. 95312-3 ................... 95312-3
7 Clamp ............................................. 94694 .................... 94694 ..................... 94694 ...................... 94694 ...................... 94694
CLEANOUT ASSEMBLY
8 Gasket ..........................................99038(1) ............... 99038(1) ................ 99038(2) .................. 99038(2) ................. 99038(2)
9 Pressure Plate .............................99037(1) ............... 99037(1) ................ 99037(2) .................. 99037(2) ................. 99037(2)
10 Screw-Self Tapping .................. 69852-1(6) ............. 69852-1(6) ............ 69852-1(12) ............ 69852-1(12) ............ 69852-1(12)
11 Collar, Pipe 1-1/32" I.D. .............. 20172-6 ................. 20172-6 .................. 20172-6 .................. 20172-6 ................... 20172-6
12 Collar, Pipe 1-7/8" I.D. ................ 95030-2 ................. 95030-2 ..................95030-2 .................. 95030-2 ................... 95030-2
13 Connector, 1/2" tubing
to 3/4" Pipe Thread ................. 42346-3 ................. 42346-3 ..................42346-3 .................. 42346-3 ................... 42346-3
14 Barometric Draft Control:
Model COF-199 Only ................ 69803 .................... - - - - ....................... - - - - ........................ - - - - ........................ - - - -
All Other Models ..................... 69803-1 ................. 69803-1 .................. 69803-1 .................. 69803-1 ................... 69803-1
15 Cover, Cleanout Opening &
Observation ............................ 38445(2) ............... 38445(2) ................ 38445(2) .................. 38445(2) ................. 38445(2)
16 Cover, Jacket ............................ 97062-500 ............. 97062-500 .............. 97062-500 .............. 97062-500 ............... 97062-500
*INSULATION,
FIBERGLASS SKIRT
Top ......................................... 181268-14 ............. 181268-14 .............. 181268-14 .............. 181268-14 ............... 181268-14
Bottom ................................... 181268-19 ............. 181268-19 .............. 181268-19 .............. 181268-19 ............... 181268-19
*Insulation Skirt ......................... - - - - ..................... - - - - ....................... - - - - .................... 191017-2 ................. 191017-1
17 *LABELS
Cleanout .................................. 78754(1) ............... 78754(2) ................ 78754(2) .................. 78754(2) ................. 78754(2)
Combination ............................ 192485 .................. 192485 ................... 192485 .................... 192485 .................... 192485
Copper Conductor .................. 192495 .................. 192495 ................... 192495 .................... 192495 .................... 192495
Hot ............................................. 192484 .................. 192484 ................... 192484 .................... 192484 .................... 192484
Relief Valve .............................. 191068 .................. 191068................... 191068 .................... 191068 .................... 191068
UL .............................................. 192486 .................. 192486 ................... 192486 .................... 192486 .................... 192486
18 Gasket, Skirt Ring ........................ 76443 ....................76443 ..................... 76443 ...................... 76443 ...................... 76443
21 Insulation, Foil-Faced ................ 41175-1 ................. 41175-1 .................. 41175-1 .................. 41175-1 ................... 41175-1
22 *Jacket, Lower Half ................... 76697-703 ............. 76697-703 .............. 76697-703 .............. 76697-703 ............... 76697-703
23 *Jacket, Upper Half ................... 78749-700 ............. 78749-703 .............. 78749-704 .............. 78749-704 ............... 78749-702
24 Plug, Observation ....................... 41377-1 ................. 41377-1 .................. 41377-1 .................. 41377-1 ................... 41377-1
25 Reducer, Flue:
Model COF-199 Only ............. 99767-502 ................. - - - - ....................... - - - - ........................ - - - - ........................ - - - -
All Other Models .................... 76707-500 ............. 76707-500 ..............76707-500 .............. 76707-500 ............... 76707-500
29 Skirt Ring..................................... 76228-1 ................. 76228-1 ..................76228-1 .................. 76228-1 ................... 76228-1
30 Thermostat-With E.C.O. ............. 76746-2 ................. 76746-2 .................. 76746-2 .................. 76746-2 ................... 76746-2
31 Valve, Drain ................................. 26273-6 ................. 26273-2 ..................26273-2 .................. 26273-2 ................... 26273-2
32 Valve, Relief ................................ 99465-4 ................. 99465-4 .................. 99465-4 .................. 99465-4 ................... 99465-3
33 +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.

COF-199 COF-315 COF-385 COF-455 COF-700
Item Description COF-245 COF-315A COF-385A COF-455A COF-700A
34 Bar, Buss ......................................... 6087 ...................... 6087 ...................... 6087 ........................ 6087 ......................... 6087
35 Bushing, Insulation ....................... 24213 .................... 24213 .................... 24213 ...................... 24213 ....................... 24213
36 Clips, Transformer (2 Req'd) .............. 6072 ...................... 6072 ...................... 6072 ........................ 6072 ......................... 6072
37 Control, Safety Primary-15 Sec. ........... 6215 ......................6215 ...................... 6215 ........................ 6215 ......................... 6215
38 Coupling .......................................... 6080 ...................... 6080 ...................... 6080 ........................ 6080 ......................... 6080
39 Cover, Fiber .................................... 6079 ...................... 6079 ...................... 6079 ........................ 6079 ......................... 6079
40 Detector, Flame ............................... 5008 ...................... 5008 ...................... 5008 ........................ 5008 ......................... 5008
41 Drawer, Assembly ........................... 6099 ...................... 6099 ...................... 6099 ........................ 6100 ......................... 6100
42 Adapter, Nozzle .......................... 24212 .................... 24212 .................... 24212 ....................... - - - - ......................... - - - -
43 Adapter, Nozzle ........................... - - - - ..................... - - - - ...................... - - - - ........................ 6092 ......................... 6092
44 Electrode Assembly ................... 24221 ....................24221 .................... 24221 ...................... 24221 ....................... 24221
45 Insulator, Electrode ................ 24210 ....................24210 .................... 24210 ...................... 24210 ....................... 24210
46 Nut, Pal .................................... 24214 .................... 24214 .................... 24214 ...................... 24214 ....................... 24214
47 Stem, Electrode ...................... 24211 .................... 24211 .................... 24211 ...................... 24211 ....................... 24211
48 Pipe, Fuel ..................................... 6086 ...................... 6086 ...................... 6086 ........................ 6086 ......................... 6086
49 Plate, Baffle ................................. 6089 ...................... 6089 ...................... 6089 ........................ 6090 ....................... **6090
50 Tripod, Electrode Support ........ 24208 .................... 24208 .................... 24208 ....................... - - - - ......................... - - - -
51 Tripod, Electrode Support ......... - - - - ..................... - - - - ...................... - - - - ........................ 6088 ......................... 6088
52 Gasket, Flange ................................ 6098 ...................... 6098 ...................... 6098 ........................ 6098 ......................... 6098
53 Housing ........................................... 6076 ...................... 6076 ...................... 6076 ........................ 6076 ......................... 6076
54 Line, Fuel - With Fittings................ 6081 ...................... 6081 ...................... 6081 ........................ 6082 ......................... 6082
55 Motor ............................................... 6068 ......................6068 ...................... 6068 ........................ 6069 ......................... 6069
56 Nozzle:
1.35 GPH-80°A COF-199 ............. 6580 ..................... - - - - ...................... - - - - ........................ - - - - ......................... - - - -
1.75 GPH-80°A COF-245 ............. 6581 ..................... - - - - ...................... - - - - ........................ - - - - ......................... - - - -
2.25 GPH-80°A COF-315 ............. - - - - ......................6182 ...................... - - - - ........................ - - - - ......................... - - - -
2.75 GPH-80°A COF-385 ............. - - - - ..................... - - - - ...................... 6083 ........................ - - - - ......................... - - - -
3.25 GPH-80°A COF-455 ............. - - - - ..................... - - - - ...................... - - - - ........................ 6084 ......................... - - - -
5.0 GPH-80°A COF-700 ............... - - - - ..................... - - - -...................... - - - - ........................ - - - - ......................... 6085
57 Pump, Fuel:
Single Stage .................................... 6018 ...................... 6018 ...................... 6018 ........................ 6018 ......................... 6018
58 Body Gasket-For All Pumps .......... 6017 ...................... 6017 ...................... 6017 ........................ 6017 ......................... 6017
59 Strainer-For All Pumps .................. 6036 ......................6036 ...................... 6036 ........................ 6036 ......................... 6036
60 Ring Assembly, Fire ....................... 6096 ...................... 6096 ...................... 6096 ........................ 6096 ......................... 6096
61 Ring Assembly, Fire ....................... - - - - ..................... - - - - ...................... - - - - ........................ 6097 ......................... 6097
62 Shutter, Air-Inner ............................ 6077 ...................... 6077 ...................... 6077 ........................ 6077 ......................... 6077
63 Shutter, Air-Outer ........................... 6078 ...................... 6078 ...................... 6078 ........................ 6078 ......................... 6078
64 Transformer, Ignition ..................... 6075 ...................... 6075 ...................... 6075 ........................ 6075 ......................... 6075
65 Tube, Draft....................................... 6093 ......................6093 ...................... 6093 ........................ 6094 ......................... 6094
66 Valve, Fuel Oil Safety ..................... - - - - ..................... - - - - ...................... - - - - ....................... 76742 ....................... 76742
67 Wheel, Blower ................................. 6070 ......................6070 ...................... 6070 ........................ 6071 ......................... 6071
68 Standard Hardware Items Purchase Locally
** 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