HONEYWELL VALVE
PSD-3-437/A
COMMERCIAL TANK TYPE WATER HEATER
REPLACEMENT PARTS LIST
MODELS BTN 120 thru 400/A:
STANDARD AND ASME (A)
SERIES 100
45
51
A.O. SMITH WATER PRODUCTS CO., INC.
5621 W. 115TH STREET • ALSIP, ILLINOIS 60803
Website: www.hotwater.com/parts • EMAIL: parts@hotwater.com
PRINTED IN U.S.A. 2606 0802 194402-000
PHONE: 1-800-433-2545 • FAX: 1-800-433-2515
BTN BTN BTN BTN BTN
Item Description 120 154 180 199 200/A
1 Baffle, Flue ........................................... 193595-1.......... 192121-1 ........... 193595-1 ............ 193595-1 .......... 192199-3
2 Base, Jacket Assembly ......................... 193862 ............ 194518 ............. 194533 ............... 194533 .............. 194556
Blower Assembly
3 Blower ......................................... 194408 ............ 194408 ............. 194408 ............... 194408 .............. 194408
4 Outlet Assembly, Exhaust ........... 194424 ............ 194424 ............. 194424 ............... 194424 .............. 194424
5 Screw, TEK .................................. 194613 ............ 194613 ............. 194613 ............... 194613 .............. 194613
6 Burner, Orifice Bracket, Main.................. 98044 .............. 98044 ............... 98044 ................. 98044................ 98044
7 Burner Orifice, Main .............................. 76243-32..........76243-30 ........... 76243-33 ............ 76243-32 .......... 76243-32
8 Burner Assembly, Main ......................... 194611 ............ 194611 ............. 194611................ 194611 .............. 194611
9 Burner w/Ignitor Bracket, Main .............. 194383 ............ 194383 ............. 194383 ............... 194383 .............. 194383
10 Bushing ................................................. 193404 ............ 193404 ............. 193404 ............... 193404.............. 193404
Cleanout Assembly
11 Gasket.......................................... 99038 .............. 99038 ............... 99038 ................. 99038 ................ 99038
12 Pressure Plate ............................. 99037 .............. 99037 ............... 99037 ................. 99037 ................ 99037
#13 Screws, Machine ..................... 69852-1(6) ...... 69852-1(6) ....... 69852-1(6) .......... 69852-1(6) ........ 69852-1(6)
14 Control, Ignition Board .......................... 194392 ............ 194392 ............. 194392 ............... 194392.............. 194392
15 Cover, Burner ......................................... 98185 ............. 98185-1 ............. 98185-3 .............. 98185-3 ............ 98185-3
16 Cover, Cleanout..................................... 181260 ............ 181260 ............. 181260 ............... 181260.............. 181260
17 Cover, Control Box ................................. 194395 ............ 194395 ............. 194395 ............... 194395 .............. 194395
18 Cover, Inner ........................................... 194514 ........... 194514-1 ........... 194514-1 ............ 194514-1 .......... 194388-3
19 Cover, Jacket ......................................... 194523 ............ 194523 ............. 194523 ............... 194523.............. 194389
20 Collar, Pipe Nipple ................................. 74060 .............. 74060 ............... 74060 ................. 74060 ................ 74060
21 Floor Shield Assembly .......................... 193864 ........... 193864-1 ...........193864-1 ............ 193864-1 ............ 193984
22 Ignitor, Flame Sensor............................ 194405 ............ 194405 ............. 194405 ............... 194405.............. 194405
23 Insulation, Top....................................... 194439 ............ 194439 ............. 194439 ............... 194439 .............. 194439
*24 Cleanout ..................................... 193914 ............ 193914 ............. 193914 ............... 193914.............. 193914
*25 Flammable Vapors ..................... 192872 ............ 192872 ............. 192872 ............... 192872 .............. 192872
*26 Help Line .................................... 190600 ............ 190600 ............. 190600 ............... 190600 .............. 190600
*27 Instruction ................................... 170345 ............ 170345 ............. 170345 ............... 170345.............. 170345
*28 Instruction, Bilingual ................... 193912 ............ 193912 ............. 193912 ............... 193912 .............. 193912
*29 Instruction, ECO ......................... 192282-1 .......... 192282-1........... 192282-1 ............ 192282-1 .......... 192282-1
30 L&O Label ................................... 194401 ............ 194401 ............. 194401 ............... 194401.............. 194401
*31 Master Fit .................................... 193859 ............ 193859 ............. 193859 ............... 193859 .............. 193859
*32 Relief Valve ................................. 200042 ............ 200042 ............. 200042 ............... 200042 .............. 200042
*33 Ultra Coat .................................... 193860 ............ 193860 ............. 193860 ............... 193860 .............. 193860
*34 Water Inlet ................................... 161040 ............ 161040 ............. 161040 ............... 161040.............. 161040
*35 Water Outlet ............................... 161040-1..........161040-1 ........... 161040-1 ............ 161040-1 .......... 161040-1
*36 Wiring Diagram ........................... 194400 ............ 194400 ............. 194400 ............... 194400.............. 194400
37 Leg .................................................... 194115 ............ 194115 ............. 194115................ 194115 .............. 194115
38 Manifold ................................................. 194516 ............ 194516 ............. 194535 ............... 194535.............. 194535
*39 Manual, Instruction ................................ 194403 ............ 194403 ............. 194403 ............... 194403.............. 194403
40 Plate, Mounting ..................................... 194391 ............ 194391 ............. 194391 ............... 194391.............. 194391
41 Probe/ECO, Upper Thermostat ............ 194396 ............ 194396 ............. 194396 ............... 194396 .............. 194396
42 Probe/Lower Thermostat ...................... 194397 ............ 194397 ............. 194397 ............... 194397 .............. 194397
43 Rod, Anode ......................................... 180618-42........ 180618-42 ......... 180618-42 .......... 180618-42 ........ 180618-42
44 Switch, Blower/Prover .......................... 194411-3 .......... 194411-4 ........... 194411-4 ............ 194411-4 .......... 194411-3
45 Switch, Low Gas Pressure .................. 191149-5 .......... 191149-5 ........... 191149-5 ............ 191149-5 .......... 191149-5
46 Switch, Off/On ........................................ 193243 ............ 193243 ............. 193243 ............... 193243 .............. 193243
47 Thermostat, Digital ............................... 194393 ............ 194393 ............. 194393 ............... 194393.............. 194393
48 Tube, Inlet ............................................. 192626-1.......... 192626-1 ........... 192626-1 ............ 192626-1 .......... 192626-1
49 Tube, Outlet .......................................... 192627-1 .......... 192627-1 ...........192627-1 ............ 192627-1 .......... 192627-1
50 Valve, Drain ........................................... 26273-6 ............ 26273-6............. 26273-6 .............. 26273-6 ............ 26273-6
51 Valve, Gas - Natural.............................. 194536-1 .......... 194536-1 ...........194536-1 ............ 194536-1 .......... 194536-1
52 Valve, T&P .............................................. 192467 ............ 192467 ............. 192467 ............... 192467.............. 192467
*53 Wire Harness - Control ......................... 194545 ............ 194545 ............. 194545 ............... 194545.............. 194545
*54 Wire Harness - Power .......................... 194398 ............ 194398 ............. 194398 ............... 194398 .............. 194398
BTN
BTN
BTN
BTN
BTN BTN BTN BTN BTN
Item Description 250/A 275/A 310/A 366/A 400/A
1 Baffle, Flue ........................................... 192199-4.......... 192199-3 ........... 192199-3 ............ 192199-3 ............ 193995
2 Base, Jacket Assembly ......................... 194556 ............ 194556 ............. 194556 ............... 194385 .............. 194385
Blower Assembly:
3 Blower ......................................... 194408 ............ 194408 ............. 194408 ............... 194408.............. 194408
4 Outlet Assembly, Exhaust ........... 194424 ............ 194424 ............. 194424 ............... 194424.............. 194424
5 Screw, TEK .................................. 194613 ............ 194613 ............. 194613 ............... 194613.............. 194613
6 Burner, Orifice Bracket, Main .................. 98044 .............. 98044 ............... 98044 ................. 98044................ 98044
7 Burner Orifice, Main .............................. 76243-30..........76243-32 ........... 76243-32 ............ 76243-30 .......... 76243-29
8 Burner Assembly, Main ......................... 194611 ............ 194611 ............. 194611................ 194611 .............. 194381
9 Burner w/Ignitor Bracket, Main .............. 194383 ............ 194383 ............. 194383 ............... 194383.............. 194383
10 Bushing ................................................. 193404 ............ 193404 ............. 193404 ............... 193404.............. 193404
CLEANOUT Assembly:
11 Gasket.......................................... 99038 .............. 99038 ............... 99038 ................. 99038................ 99038
12 Pressure Plate ............................. 99037 .............. 99037 ............... 99037 ................. 99037 ................ 99037
#13 Screws, Machine ..................... 69852-1(6) ...... 69852-1(6) ....... 69852-1(6) .......... 69852-1(6) ........ 69852-1(6)
14 Control, Ignition Assembly .................... 194392 ............ 194392 ............. 194392 ............... 194392 .............. 194392
15 Cover, Burner ........................................ 98185-3............ 98185-3 ............. 98185-3 .............. 98185-4 ............ 98185-4
16 Cover, Cleanout..................................... 181260 ............ 181260 ............. 181260 ............... 181260.............. 181260
17 Cover, Control Box ................................. 194395 ............ 194395 ............. 194395 ............... 194395 .............. 194395
18 Cover, Inner .......................................... 194388-4.......... 194388-4...........194388-4 .............. 194388 .............. 194388
19 Cover, Jacket ......................................... 194389 ............ 194389 ............. 194389 ............... 194389.............. 194389
20 Collar, Pipe Nipple ................................. 74060 .............. 74060 ............... 74060 ................. 74060 ................ 74060
21 Floor Shield Assembly .......................... 193984 ............ 193984 ............. 193984 ............... 193984.............. 193984
22 Ignitor, Flame Sensor............................ 194405 ............ 194405 ............. 194405 ............... 194405.............. 194405
23 Insulation, Top....................................... 194439 ............ 194439 ............. 194439 ............... 194439 .............. 194439
LABELS:
*24 Cleanout ..................................... 193914 ............ 193914 ............. 193914 ........................................... 193914
*25 Flammable Vapors ..................... 192872 ............ 192872 ............. 192872 ............... 192872 .............. 192872
*26 Help Line .................................... 190600 ............ 190600 ............. 190600 ............... 190600 .............. 190600
*27 Instruction ................................... 170345 ............ 170345 ............. 170345 ............... 170345.............. 170345
*28 Instruction, Bilingual ................... 193912 ............ 193912 ............. 193912 ............... 193912 .............. 193912
*29 Instruction, ECO ......................... 192282-1 .......... 192282-1........... 192282-1 ............ 192282-1 .......... 192282-1
30 L&O Label ................................... 194401 ............ 194401 ............. 194401 ............... 194401.............. 194401
*31 Master Fit .................................... 193859 ............ 193859 ............. 193859 ............... 193859 .............. 193859
*32 Relief Valve ................................. 200042 ............ 200042 ............. 200042 ............... 200042 .............. 200042
*33 Ultra Coat .................................... 193860 ............ 193860 ............. 193860 ............... 193860 .............. 193860
*34 Water Inlet ................................... 161040 ............ 161040 ............. 161040 ............... 161040.............. 161040
*35 Water Outlet ............................... 161040-1..........161040-1 ........... 161040-1 ............ 161040-1 .......... 161040-1
*36 Wiring Diagram ........................... 194400 ............ 194400 ............. 194400 ............... 194400.............. 194400
37 Leg .................................................... 194115 ............ 194115 ............. 194115................ 194115 .............. 194115
38 Manifold ................................................. 194535 ............ 194535 ............. 194535 ............... 194386.............. 194386
*39 Manual, Instruction ................................ 194403 ............ 194403 ............. 194403 ............... 194403.............. 194403
40 Plate, Mounting ..................................... 194391 ............ 194391 ............. 194391 ............... 194391.............. 194391
41 Probe/ECO, Upper Thermostat ............ 194396 ............ 194396 ............. 194396 ............... 194396 .............. 194396
42 Probe/Lower Thermostat ...................... 194397 ............ 194397 ............. 194397 ............... 194397 .............. 194397
43 Rod, Anode ......................................... 180618-42 ........ 180618-42 ......... 180618-42 .......... 180618-42 ........ 180618-42
44 Switch, Blower Prover .......................... 194411-5.......... 194411-4 ........... 194411-4 ............ 194411-3 ............ 194411
45 Switch, Low Gas Pressure .................. 191149-5 .......... 191149-5 ........... 191149-5 ............ 191149-5 .......... 191149-5
46 Switch, Off/On ........................................ 193243 ............ 193243 ............. 193243 ............... 193243 .............. 193243
47 Thermostat, Digital ............................... 194393 ............ 194393 ............. 194393 ............... 194393.............. 194393
48 Tube, Inlet .............................................192626-1.......... 192626-1 ........... 192626-1 ............ 192626-1 .......... 192626-1
49 Tube, Outlet .......................................... 192627-1 .......... 192627-1 ...........192627-1 ............ 192627-1 .......... 192627-1
50 Valve, Drain ........................................... 26273-6 ............ 26273-6............. 26273-6 .............. 26273-6 ............ 26273-6
51 Valve, Gas - Natural.............................. 194536-1 .......... 194536-1 ............ 194536 ............... 194536 .............. 194536
52 Valve, T&P .............................................. 192467 ............ 192467 ............. 192467 ............... 192467.............. 192467
*53 Wire Harness - Control ......................... 194545 ............ 194545 ............. 194545 ............... 194545.............. 194545
*54 Wire Harness - Power .......................... 194398 ............ 194398 ............. 194398 ............... 194398 .............. 194398
*Items not illustrated. # Quantities shown in parenthesis next to part number. TBD To be determined.
Part numbers
Requests from PSD by giving all information such as model and series number, type of gas and specifications.
underlined are recommended stock items for emergency replacement. (Consider gas used in your area only).
A.O. SMITH WATER PRODUCTS CO., INC.
5621 W. 115TH STREET • ALSIP, ILLINOIS 60803
Website: www.hotwater.com/parts • EMAIL: parts@hotwater.com
PHONE: 1-800-433-2545 • FAX: 1-800-433-2515
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