A. O. Smith BTH-120 Parts List

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	COMMERCIAL WATER HEATER PARTS LIST
	MODEL BTH-120, 150, 199, 250
	SERIES 970 & 973
CONTROL PANEL	TOP COVER CONTROLS
PAGE 2	TOP COVER CONTROLS
	PAGE 2
GAS VALVE
PAGE 4
	EXHAUST ELBOW &
	VENT KIT PARTS
	PAGE 4
BURNER ASSEMBLY
PAGE 4
PRINTED IN THE U.S.A. 0206	PART NO. 196146-003
	1


		BTH-120	BTH-120	BTH-150
ITEM	DESCRIPTION	970	973	970
1 ...	Cleanout Cover .....................................................................	181260 ...........................	181260 .............................	181260..................
2 ...	Cleanout Gasket ....................................................................	99038 .............................	99038 ...............................	99038...................
8 ...	T & P Relief Valve	BTH-120,
3 ...	Cleanout Plate .......................................................................	99037 .............................	99037 ...............................	99037...................
4 ...	Top Cover, Left .....................................................................	193885 ...........................	193885 .............................	193885..................
5 ...	Top Cover, Right ..................................................................	193886 ...........................	193886 .............................	193886..................
6 ...	Top Cover, Back, Nat. ..........................................................	193887 ...........................	193887 .............................	193887..................
6 ...	Top Cover, Back, Prop. ........................................................	193887 ...........................	193887 .............................	193887..................
7 ...	Drain Valve ..........................................................................	26273-6 ..........................	26273-6 ...........................	26273-6 .................
	...............................................................	99465-7 ..........................	99465-7 ...........................	99465-7 .................
9 ...	Upper Temp. Probe w/ECO ..................................................	196597 ...........................	196597 .............................	196597..................
10 ...	Lower Temp. Probe ..............................................................	196598 ...........................	196598 .............................	196598..................
11 ...	Anode, Alum. Alloy (4) .......................................................	183523-33 ......................	183523-52 .......................	183523-52 ...............
12 ...	LABELS
.............	Cleannout Label ...............................................................	78754 .............................	78754 ...............................	78754...................
.............	Flammable Vapor/Scald ..............................................	184872-000 ....................	184872-000 .....................	184872-000 ..............
.............	800 Help Line Label ........................................................	190600 ...........................	190600 .............................	190600..................
.............	Lighting/Operation (Eng.) WR/Natural ..............................	193292 ...........................	193292 ..............................	- - - - - ...................
.............	Lighting/Operation (Eng.) WR/Prop. ....................................	- - - ...............................	- - - - - ..............................	193358..................
.............	Lighting/Operation (Fr.)-White-Rodgers ................................	193460 ...........................	193460 ..............................	- - - - - ...................
.............	Lighting/Operation (Eng.) HW/Natural. .............................	- - - - - .............................	- - - - - ..............................	192480..................
	Lighting/Operation (Eng.) WR/Prop. .................................	- - - - - .............................	- - - - - ...............................	- - - - - ...................
.............		BTH-120,
.............	Lighting/Operation (Fr.) HW/Natural. ...................................	- - - - - .............................	- - - - - ..............................	192996..................
.............	Lighting/Operation (Fr.) HW/Prop. .......................................	- - - - - .............................	- - - - - ...............................	- - - - - ...................
.............	WARNING Label .............................................................	192803 ............................	- - - - - ...............................	- - - - - ...................
.............	Wiring Diagram Label ......................................................	193317 ...........................	193317 .............................	192889..................
.............	Water Inlet (bilingual) ......................................................	161040 ...........................	161040 .............................	161040..................
.............	Water Outlet (bilingual) .................................................	161040-1 ........................	161040-1 .........................	161040-1 ................
.............	Relief Valve Label ...........................................................	191068 ...........................	191068 .............................	191068..................
13 ...	Manual* .................................................................................	196145 ...........................	196145 .............................	196145..................
CYCLONE XHE BTH - CONTROL PANEL
14 ...	Board, Display Panel ..........................................................	194808-1 ........................	194808-1 .........................	194808-1 ................
15 ...	Bracket Mounting, Left........................................................	194123-1 ........................	194123-1 .........................	194123-1 ................
16	Bracket Mounting, Right .......................................................	194123 ...........................	194123 .............................	194123..................
16		BTH-120,
17 ...	Control Board &
.......	Cable Assem. (includes 17a) ...............................................	196473 ...........................	196473 .............................	196473..................
17a . Cable Assy, Control Board to Display Board		....................... 194809 ...........................	194809 .............................	194809..................
18 ...	Junction Box .........................................................................	194126 ...........................	194126 .............................	194126..................
19 ...	Junction Box Cover ................................................................	2233 ...............................	2233 .................................	2233 ....................
20 ...	Display Panel Label ..............................................................	194203 ...........................	194203 .............................	194203..................
21 ...	Panel, Front ..........................................................................	193884 ...........................	193884 .............................	193884..................
22 ...	Screw, Plastite #10-14 x 3/8" ...............................................	194202 ...........................	194202 .............................	194202..................
23 ...	On/Off Switch .......................................................................	193243 ...........................	193243 .............................	193243..................
24 ...	Cable Assembly, Line Power................................................	194261 ...........................	194261 .............................	194261..................
BTH 120-250 TOP COVER CONTROLS		193293 ............................	- - - - - ..............................	193363..................
...25	Blocked Inlet Switch, Natural Gas ........................................	BTH-120,
25 ...	Blocked Inlet Switch, Propane Gas ......................................	- - - - - ............................	193356 ..............................	- - - - - ...................
26 ...	Blocked Outlet Switch, Natural Gas .....................................	193294 ............................	- - - - - ..............................	193362..................
26 ...	Blocked Outlet Switch, Propane Gas ...................................	- - - - - ............................	193357 ..............................	- - - - - ...................
27 ...	Blower Prover Switch ...........................................................	194706 ...........................	194706 .............................	194706..................
28 ...	Blower/Motor Assembly ....................................................	196810-000 ....................	196810-000 .....................	196811-000 ..............
29 .........	Inlet Flange Assembly w/Hose Barb .............................	192886-1 ........................	192886-1 .........................	192886-1 ................
30 .........	Intake Assembly ..............................................................	192815 ...........................	192815 .............................	192815..................
31 ...	BSR Assembly ......................................................................	- - - - - .............................	- - - - - ...............................	- - - - - ...................
32 .........	BSR Board .......................................................................	- - - - - .............................	- - - - - ...............................	- - - - - ...................
33	Resistor Board .................................................................	- - - - - .............................	- - - - - ...............................	- - - - - ...................
33		BTH-120,


	BTH-150	BTH-199		BTH-199		BTH-250
	973	970		973		970
........................................	181260 ................................	181260 .................................		181260 .................................		181260
.........................................	99038 ..................................	99038 ...................................		99038 ...................................		99038
	150, 199, 250
.........................................	99037 ..................................	99037 ...................................		99037 ...................................		99037
........................................	193885 ................................	193885 .................................		193885 .................................		193885
........................................	193886 ................................	193886 .................................		193886 .................................		193886
........................................	193887 ................................	193887 .................................		193887 .................................		193887
........................................	193887 ................................	193887 .................................		193887 ..................................		- - - - -
........................................	26273-6 ..............................	26273-6 ...............................		26273-6 ................................		26273-6
........................................	99465-7 ..............................	99465-7 ................................		99465-7 .................................		192467
........................................	196597 ................................	196597 .................................		196597 .................................		196597
........................................	196598 ................................	196598 .................................		196598 .................................		196598
......................................	183523-52 ..........................	183523-52 ............................	183523-52 .............................			183523-52
.........................................	78754 ..................................	78754 ...................................		78754 ...................................		78754
	150, 199, 250
.....................................	184872-000 ........................	184872-000 ..........................	184872-000 ...........................			184872-000
........................................	190600 ................................	190600 .................................		190600 .................................		190600
.........................................	- - - - - ..................................	- - - - - ...................................		- - - - - ..................................		193358
........................................	193358 ................................	193358 .................................		193358 ..................................		- - - - -
.........................................	- - - - - ..................................	- - - - - ...................................		- - - - - ...................................		- - - - -
........................................	192480 ................................	192480 .................................		192480 ..................................		- - - - -
.........................................	- - - - - ..................................	- - - - - ...................................		- - - - - ...................................		- - - - -
........................................	192996 ................................	192996 .................................		192996 ..................................		- - - - -
.........................................	- - - - - ..................................	- - - - - ...................................		- - - - - ...................................		- - - - -
.........................................	- - - - -
........................................	192889 ................................	192889 .................................		192889 .................................		193204
........................................	161040 ................................	161040 .................................		161040 .................................		161040
	150, 199, 250
.......................................	161040-1 ............................	161040-1..............................		161040-1 ...............................		161040-1
........................................	191068 ................................	191068 .................................		191068 .................................		191068
........................................	196145 ................................	196145 .................................		196145 .................................		196145
.......................................	194808-1 ............................	194808-1..............................		194808-1 ...............................		194808-1
.......................................	194123-1 ............................	194123-1..............................		194123-1 ...............................		194123-1
........................................	194123 ................................	194123 .................................		194123 .................................		194123
........................................	196473 ................................	196473 .................................		196473 .................................		196473
........................................	194809 ................................	194809 .................................		194809 .................................		194809
........................................	194126 ................................	194126 .................................		194126 .................................		194126
	150, 199,			2233	250
..........................................	2233 ....................................	2233 .....................................		2233	.....................................	2233
........................................	194203 ................................	194203 .................................		194203 .................................		194203
........................................	193884 ................................	193884 .................................		193884 .................................		193884
........................................	194202 ................................	194202 .................................		194202 .................................		194202
........................................	193243 ................................	193243 .................................		193243 .................................		193243
........................................	194261 ................................	194261 .................................		194261 .................................		194261
.........................................	- - - - - .................................	193363 ..................................		- - - - - ..................................		193361
........................................	193355 .................................	- - - - - ..................................		195012 ..................................		- - - - -
.........................................	- - - - - .................................	193364 ..................................		- - - - - ..................................		193357
........................................	193357 .................................	- - - - - ..................................		193357 ..................................		- - - - -
........................................	194706 ................................	194706 .................................		194706 .................................		194706
	150, 199, 250
.....................................	196810-000 ........................	196811-000 ..........................	196810-000 ...........................			196812-000
.......................................	192886-1 ............................	192886-1..............................		192886-1 ...............................		192886-1
........................................	192815 ................................	192815 .................................		192815 .................................		194116
.........................................	- - - - - ..................................	- - - - - ...................................		- - - - - ...................................		- - - - -
.........................................	- - - - - ..................................	- - - - - ...................................		- - - - - ...................................		- - - - -
.........................................	- - - - - ..................................	- - - - - ...................................		- - - - - ...................................		- - - - -

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