Page 1
COMMERCIAL WATER HEATER PARTS LIST
MODEL BTH-120, 150, 199, 250
SERIES 970 & 973
CONTROL PANEL
PAGE 2
GAS VALVE
PAGE 4
TOP COVER CONTROLS
PAGE 2
EXHAUST ELBOW &
VENT KIT PARTS
PAGE 4
BURNER ASSEMBLY
PAGE 4
PRINTED IN THE U.S.A. 0206 PART NO. 196146-003
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BTH-120 BTH-120 BTH-150
ITEM DESCRIPTION 970 973 970
1 ... Cleanout Cover.....................................................................181260........................... 181260............................. 181260 ..................
2 ... Cleanout Gasket....................................................................99038 ............................. 99038 ...............................99038...................
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 .................
8 ... T & P Relief Valve ............................................................... 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 (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..................
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
25 ... Blocked Inlet Switch, Natural Gas ........................................193293............................ - - - - -.............................. 193363..................
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................................................................. - - - - -............................. - - - - - ...............................- - - - -...................
Lighting/Operation (Eng.) WR/ Prop.................................. - - - - -............................. - - - - - ...............................- - - - -...................
BTH-120,
BTH-120,
BTH-120,
BTH-120,
BTH-120,
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BTH-150 BTH-199 BTH-199 BTH-250
973 970 973 970
........................................ 181260 ................................ 181260 .................................181260 ................................. 181260
......................................... 99038 .................................. 99038 ...................................99038 ................................... 99038
......................................... 99037 .................................. 99037 ...................................99037 ................................... 99037
........................................ 193885 ................................ 193885 .................................193885 ................................. 193885
........................................ 193886 ................................ 193886 .................................193886 ................................. 193886
........................................ 193887 ................................ 193887 .................................193887 ................................. 193887
........................................ 193887 ................................ 193887 .................................193887 .................................. - - - - -
150, 199, 250
........................................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
.....................................184872-000 ........................ 184872-000.......................... 184872-000 ...........................184872-000
........................................ 190600 ................................ 190600 .................................190600 ................................. 190600
......................................... - - - - - .................................. - - - - - ...................................- - - - - .................................. 193358
........................................ 193358 ................................ 193358 .................................193358 .................................. - - - - -
......................................... - - - - - .................................. - - - - - ...................................- - - - - ................................... - - - - -
150, 199, 250
........................................ 192480 ................................ 192480 .................................192480 .................................. - - - - -
......................................... - - - - - .................................. - - - - - ...................................- - - - - ................................... - - - - -
........................................ 192996 ................................ 192996 .................................192996 .................................. - - - - -
......................................... - - - - - .................................. - - - - - ...................................- - - - - ................................... - - - - -
......................................... - - - - -
........................................ 192889 ................................ 192889 .................................192889 ................................. 193204
........................................ 161040 ................................ 161040 .................................161040 ....
.......................................161040-1 ............................ 161040-1.............................. 161040-1 ...............................161040-1
........................................ 191068 ................................ 191068 .................................191068 ................................. 191068
........................................ 196145 ................................ 196145 .................................196145 ................................. 196145
............................. 161040
.......................................194808-1 ............................ 194808-1.............................. 194808-1 ...............................194808-1
150, 199, 250
.......................................194123-1 ............................ 194123-1.............................. 194123-1 ...............................194123-1
........................................ 194123 ................................ 194123 .................................194123 ................................. 194123
........................................ 196473 ................................ 196473 .................................196473 ................................. 196473
........................................ 194809 ................................ 194809 .................................194809 ................................. 194809
........................................ 194126 ................................ 194126 .................................194126 ................................. 194126
.......................................... 2233 ....................................2233 ..................................... 2233 ..................................... 2233
........................................ 194203 ................................ 194203 .................................194203 ................................. 194203
........................................ 193884 ................................ 193884 .................................193884 ................................. 193884
........................................ 194202 ................................ 194202 .................................194202 ................................. 194202
........................................ 193243 ................................ 193243 .................................193243 ................................. 193243
150, 199, 250
........................................ 194261 ................................ 194261 .................................194261 ................................. 194261
......................................... - - - - - ................................. 193363 ..................................- - - - - .................................. 193361
........................................ 193355 ................................. - - - - - ..................................195012 .................................. - - - - -
......................................... - - - - - ................................. 193364 ..................................- - - - - .................................. 193357
........................................ 193357 ................................. - - - - - ..................................193357 .................................. - - - - -
........................................ 194706 ................................ 194706 .................................194706 ................................. 194706
.....................................196810-000 ........................ 196811-000.......................... 196810-000 ...........................196812-000
.......................................192886-1 ............................ 192886-1.............................. 192886-1 ...............................192886-1
........................................ 192815 ................................ 192815 .................................192815 ....
......................................... - - - - - .................................. - - - - - ...................................- - - - - ................................... - - - - -
......................................... - - - - - .................................. - - - - - ...................................- - - - - ................................... - - - - -
150, 199, 250
......................................... - - - - - .................................. - - - - - ...................................- - - - - ................................... - - - - -
............................. 194116
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BTH-120 BTH-120 BTH-150
ITEM DESCRIPTION 970 973 970
34 ... Cable Assembly, Low Voltage..............................................193246........................... 193246 .............................193246...................
35 ... Wire Assembly, Air Flow ...................................................... 192802 ........................... 192802 .............................192802...................
36 ... Bracket, Blower Mounting.....................................................192482........................... 192482.............................192482...................
37 ... Tube, Pressure ...................................................................193738-8 ........................193738-8 ......................... 193738-8.................
38 .........Tube, Pressure ............................................................. 193738-22 ......................193738-22 ..................... 193738-22..................
39 .........Tube, Pressure ................................................................ - - - - -............................. - - - - - .............................- - - - - .....................
40 .........Tubing Connector ............................................................ - - - - -............................. - - - - - .............................- - - - - .....................
41 .........Tube, Air ....................................................................... 192469-10 ...................... 192469-10 ..................... 192469-10..................
42 .........Clamp - 3" ........................................................................192696........................... 192696 ........................... 192696 ....................
43 .........Transformer, 120V-24V,60 Hz,20 VA..............................192608........................... 192608 ........................... 192608 ....................
44 .........Wire Assembly, Air Flow Switch.................................... 192802-1 ........................192802-1 .......................... - - - - - .....................
GAS VALVE
45 .........Nipple, Pipe 3/4" ............................................................85040-18 ........................85040-18 ....................... 85040-18..................
46 .........Nipple, Pipe 1/8" ............................................................192948-1 ........................192948-1 ..........................- - - - - .....................
47 .........Union, Pipe .......................................................................95515............................. 95515 ............................. 95515 .....................
48 .........Switch, Low Gas Pressure, Natural............................... 191149-5 .......................... - - - - -.............................- - - - - .....................
48 .........Switch, Low Gas Pressure, Propane............................... - - - - -...........................191149-4 ..........................- - - - - .....................
49 .........Tee, 1/8" ...........................................................................40119............................. 40119 ............................. - - - - - .....................
50 .........Gas Valve, Natural Gas...................................................192966............................ - - - - - ............................ 192797 ....................
50 .........Gas Valve, Propane Gas................................................. - - - - - ............................ 192967 ............................ - - - - - .....................
EXHAUST ELBOW, VENT KIT PARTS
51 .........Adapter, Hose Fitting.......................................................192472........................... 192472 ........................... 192472 ....................
52 .........Elbow 90° ........................................................................192473........................... 192473........................... 192473 ....................
53 .........Nipple, Close ...................................................................194558........................... 194558 ........................... 194558 ....................
54 .........Plug, Hex .........................................................................194560........................... 194560 ........................... 194560 ....................
55 .........Tee...................................................................................194559........................... 194559 ........................... 194559 ....................
56 .........Tubing...........................................................................191746-72 ......................191746-72 ..................... 191746-72 ..................
57 .........Connector, Exhaust .........................................................192636........................... 192636........................... 192636 ....................
58 .........Hose Clamp, 3" ...............................................................192696........................... 192696........................... 192696 ....................
59 .........Hose Clamp, 4 1/2" .........................................................192697........................... 192697...........................192697 ....................
VENT KIT PARTS
60 .........Elbow w/Screen...............................................................192815 ........................... 192815 ........................... 192815 ...................
61 .........Elbow, 45° x 3.5" .............................................................181901........................... 181901 ........................... 181901 ....................
62 .........Screen .............................................................................181662........................... 181662 ........................... 181662 ....................
63 .........Intake Vent Terminal Assy. ............................................. - - - - -............................. - - - - -............................182167 ....................
64 .........Wall Plates (2 Req’d.) .....................................................181557........................... 181557...........................181557 ....................
65 .........Silicone Sealer, 2 oz. Tube .............................................181564........................... 181564........................... 181564 ....................
BURNER - ASSEMBLY
66 .........Burner ..........................................................................196163-003 ........................ - - - - - ........................ 196163-001................
66 .........Burner for (BTH-120, 150, 199) 973................................ - - - - -.........................196166-002 ........................- - - - - .....................
67 .........Ignitor Assembly ..............................................................192638........................... 192638........................... 192638 ....................
68 .........Washer (4 Req'd.) ...........................................................196153........................... 196153........................... 196153 ....................
69 .........Air Restrictor - Natural Gas ...........................................192450-3 .......................... - - - - - .......................... 192450-1...................
69 .........Air Restrictor - Propane Gas ........................................... - - - - - ...........................192450-5 .......................... - - - - - .....................
70 .........Hose Barb...................................................................... 192800-1 ........................192800-1 ....................... 192800-1...................
71 .........Flame Rod Assembly ......................................................192478........................... 192478...........................192478 ....................
72 .........Screw, Self-Tapping #8-18 (2 Req’d.) .............................192698........................... 192698...........................192698 ....................
73 .........Orifice - Natural Gas.................................................... 192477-204 ........................ - - - - - ........................ 192477-235 .................
73 .........Orifice - Propane Gas...................................................... - - - - - .........................192477-125 ........................- - - - - .....................
74 .........Orifice Holder...................................................................192447........................... 192447........................... 192447 ....................
75 .........Gasket .............................................................................192331........................... 192331 ........................... 192331 ....................
76 .........5/16 x 7/8" Socket Head Cap Screw (4 Req'd.) ............192515-2 ........................192515-2 ....................... 192515-2...................
BTH-120,
BTH-120,
BTH-120,
BTH-120,
.
.
.
*Not illustrated.
NOTE:
your area only. Standard hardware items may be purchased locally.
Underlined parts are recommended stock items for emergency replacement. Consider gas used in
BTH-120,
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Page 5
BTH- 150 BTH-199 BTH-199 BTH- 250
973 970 973 970
150, 199, 250
150, 199, 250
150, 199, 250
150, 199, 250
150, 199, 250
5
Page 6
BTH 120-250
5
EXHAUST ELBOW, VENT KIT PARTS
4
12
6
52
59
57
58
55
53
51
62
63
11
54
62
63
9
60
61
8
192815
181617
182167
64
65
56
1
CLEAN OUT ASSEMBLY
10
CONTROL PANEL
19
18
17
7
21
15
14
22
16
17a
24
23
20
6
Page 7
BURNER ASSEMBLY
GAS VALVE
48
68
75
66
74
70
69
67
76
68
71
72
73
TOP COVER CONTROLS
49
46
50
47
45
35
35
25
27
37
26
30
36
43
29
42
38
44
31
28
33
32
41
42
37
34
7
Page 8
A.O. Smith Water Heater Parts Fulfillment
125 Southeast Parkway
Franklin, TN 37068
1-800-433-2545
www.hotwater.com
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