A.O. Smith HW 300 THRU HW 670 Water Heater User Manual


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Item Parts Description HW 300 HW 399/420 HW 520 HW670
1.......... Base, Assembly ................................................76195-700 ..........76193-700.......... 76193-700 ......... 76193-700
2.......... Box, Junction ...................................................... 190616-4 ............190616-4............ 190616-4 ........... 190616-4
3.......... Bracket, Gas Control String ..................................93764 ................. 93764 ................. 93764.................93764
4.......... Bracket, Pilot (At Main Gas Burner) ......................190424 ............... 190424 ............... 190424...............190424
5.......... Bracket, Shield .....................................................190473 ............... 190473 ............... 190473...............190473
6.......... Burner, Main: Sea Level
.......... Natural Gas.................................................... 98593-20 .............98593-2 ............. 98593-21 ............ 98593-4
.......... Propane Gas .................................................. 98593-1 ..............98593-3............. 98593-22 ............ 98593-5
7.......... Burner, Pilot (With Orifice):
.......... Natural Gas.................................................... 210871-0 ............210871-0............ 210871-0 ........... 210871-0
.......... Propane Gas ................................................. 210871-1 ............210871-1............ 210871-1 ........... 210871-1
9.......... Bushing, Snap.......................................................98863 ................. 98863 ................. 98863................. 98863
10.......... Cap, Terminal End ................................................98206 ................. 98206 ................. 98206.................98206
11.......... Clamp, Capillary Tube ..........................................94998 ................. 94998 ................. 94998.................94998
12.......... Clamp, Tubing.......................................................68903 ................. 68903 ................. 68903.................68903
13.......... Clip, Retainer ........................................................92979 ................. 92979 ................. 92979.................92979
14.......... Coil, Combustion Chamber..................................97485 ................. 97486 ................. 99267.................99267
15.......... Collector, Flue ...................................................190285-10 .... 190285-1/190285 ..... 190285-5 .............190286
16.......... Control, Intermittent Ignition:
.......... Natural Gas (Series 932) ................................191182 ............... 191182................ 191182 ............... 191182
.......... Propane Gas (Series 933) ............................ 191182-1.............191182-1............ 191182-1 ........... 191182-1
17.......... Control, Limit ....................................................... 93661-4 ..............93661-4.............. 93661-4 ............. 93661-4
18.......... Control, Limit (Protector Switch) ......................... 77981-2 ..............77981-2.............. 77981-2 ............. 77981-2
19.......... Cover, Leg .........................................................97259-701 ..........97259-701.......... 97259-701 ......... 97259-701
20.......... Cover, Limit Control (Protector Switch) .............96667-706 ..........96667-706.......... 96667-706 ......... 96667-706
21.......... Cover, Peep Hole ............................................... 1050-702 ............1050-702............ 1050-702 ........... 1050-702
22.......... Cover, Top.......................................................... 96096-709 ..........96096-701.......... 96378-702 ......... 96378-701
23.......... *Decals:
.......... ASHRAE ...........................................................191857 ............... 191857 ............... 191857...............191857
.......... California ..........................................................42985 ................. 42985 ................. 42985.................42985
.......... Clearance — Models HW-300, 399 .............. 190022-1 ............190022-2................ - - - - ................... - - - -
.......... Clearance — Models HW-420, 520 & 670 ........ - - - - .................. 76982 ................. 76982.................76982
.......... Flammable Vapors/Scald ................................192872 ............... 192872 ............... 192872...............192872
.......... Lighting & Operating ........................................191367 ............... 191367 ............... 191367...............191367
.......... M.E.A. ............................................................. 42929-22 ............42929-22............ 42929-23 ........... 42929-22
.......... Pilot 77860 ......................................................77860 ................. 77860 ................. 77860
.......... Protector............................................................97315 ................. 97315 ................. 97315.................97315
.......... Warning............................................................190230 ............... 190230 ............... 190230...............190230
.......... Water Inlet .........................................................94518 ................. 94518 ................. 94518.................94518
.......... Water Outlet ......................................................94519 ................. 94519 ................. 94519.................94519
COIL HIGH LIMIT
ASSEMBLY
ROBERTSHAW
GAS VALVE
77951 85688 99593 78469 78468
WIRE TERMINALS USED WITH ITEM 62
PILOT BURNER
ASSEMBLY
*
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