A.O. Smith CYCLONE Xi BTH 120A Guide

1
PRINTED 0607 197728-001
BLOWER/BURNERASSEMBLY
See Page 4 & 5
GASVALVE(S)
See Page 6
DISPLAYCONTROLASSEMBLY
See Page 2
MODELS:
BTH 120/A
BTH 150/A
BTH 199/A
BTH 250/A
Series:
100/101
COMMERCIAL GAS SERVICE PARTS LIST
A.O. Smith Water Heater Parts Fulfillment
125 Southeast Parkway • Franklin, TN 37068
www.hotwater.com • 1-800-433-2525
INNERCOVERCONTROL ASSEMBLY
See Page 3
A.O. Smith Water Heater Parts Fulfillment • phone: [phone] • www.hotwater.com
ELECTRONIC ANODE
See Page 7
EXHAUST ELBOWASSEMBLY - VENT KITASSEMBLY
See Page 7
BTH CYCLONE Xi - MODEL BTH-120/A-250/A
See Page 2

2
BTH 120/A BTH 150/A BTH 199/A BTH 250/A
Item Description 100/101 100/101 100/101 100/101
1 Cleanout Gasket ......... 9004099015 .......... 9004099015 ........ 9004099015 ....... 9004099015
2 Cleanout Plate ............ 9004098005 .......... 9004098005 ........ 9004098005 ....... 9004098005
3 T & P Valve ................. 9005903205 .......... 9005903205 ........ 9005903205 ....... 9005903205
4 Lower Probe ............... 9006242015 .......... 9006242015 ........ 9006242015 ....... 9006242015
Standard hardware items may be purchased locally.
BTH CYCLONE Xi 120/A - 250/A CLEANOUT ASSEMBLY / TEMPERATURE & PRESSURE VALVE
PRINTED0607 197728-001
BTH 120/A BTH 150/A BTH 199/A BTH 250/A
Item Description 100/101 100/101 100/101 100/101
1 BTH Display Overlay ..................................9006239005 ........ 9006239005 ...... 9006239005 ...... 9006239005
2 Display Band .............................................9006270005 ........ 9006270005 ...... 9006270005 ...... 9006270005
3 Display Band Mount ...................................9006271015 ........ 9006271015 ...... 9006271015 ...... 9006271015
4 On/Off Switch.............................................9005929215 ........ 9005929215...... 9005929215 ...... 9005929215
5 Splatter Shield ........................................... 197763-000 ........ 197763-000 ....... 197763-000 ...... 197763-000
6 Switch Wire Connection ............................. 197758-000 ........ 197758-000 ....... 197758-000 ...... 197758-000
7 User Interface Module - UIM ....................... 9006240005 ........ 9006240005...... 9006240005 ...... 9006240005
BTH CYCLONE Xi 120/A - 250/A - DISPLAY CONTROL ASSEMBLY
A.O. Smith Water Heater Parts Fulfillment • phone: [phone] • www.hotwater.com

3
BTH CYCLONE Xi INNER COVER CONTROL ASSEMBLY - MODELS 120/A & 150/A
BTH 120/A BTH 150/A
Item Description 100 101 100 101
1 ...... Controller ........................ 9006262005 ..... 9006266005 .......... 9006263005 ..... 9006267005
2 ...... Switch-blocked outlet ...... 9006287015 ..... 9006287015 .......... 9006289015 ..... 9006287015
3 ...... Switch-inlet ..................... 9006288015 ..... 9006281015 .......... 9006288015 ..... 9006281015
4 ...... Switch-prover .................. 9006280015 ..... 9006280015 .......... 9006280015 ..... 9006280015
5 ...... Upperprobe .................... 9004238215 ..... 9004238215 .......... 9004238215 ..... 9004238215
BTH CYCLONE Xi INNER COVER CONTROL ASSEMBLY - MODELS 199/A & 250/A
BTH 199/A BTH 250/A
Item Description 100 101 100 101
1 ...... Controller ........................ 9006264005 ..... 9006268005 .......... 9006265005 ..... 9006269005
2 ...... Switch-blocked outlet ...... 9006289015 ..... 9006282015 .......... 9006282015 ..... 9006282015
3 ...... Switch-inlet ..................... 9006288015 ..... 9006281015 .......... 9006281015 ..... 9006281015
4 ...... Switch-prover .................. 9006280015 ..... 9006280015 .......... 9006280015 ..... 9006280015
5 ...... Upperprobe .................... 9004238215 ..... 9004238215 .......... 9004238215 ..... 9004238215
Standard hardware items may be purchased locally.
A.O. Smith Water Heater Parts Fulfillment • phone: [phone] • www.hotwater.com
PRINTED 0607 197728-001

4
BURNER / BLOWER ASSEMBLY - MODELS 120/A & 150/A
BTH 120/A BTH 150/A
Item Description 100 101 100 101
1 ...... Blower ....................................................... 9006272005 ....... 9006272005 ........ 9006273005 ..... 9006273005
2 ...... Burner ....................................................... 9006275005 ....... 9006276005 ........ 9006277005 ..... 9006278005
3 ...... Burner Flange ........................................... 197256-000 .........197256-000 .........197256-000 .......197256-000
4 ...... Burner Gasket .......................................... 197257-000 .........197257-000 .........197257-000 .......197257-000
5 ...... CondensateTee........................................ 181865-000 .........181865-000 .........181865-000 .......181865-000
6 ...... Coupling-PowerVent ................................ 9006107205 ....... 9006107205 ........ 9006107205 ..... 9006107205
7 ...... Flame Sensor ........................................... 9006106205 ....... 9006106205 ........ 9006106205 ..... 9006106205
8 ...... Flange Gasket .......................................... 194817-000 .........194817-000 .........194817-000 .......194817-000
9 ...... Hose Barb 1/2" x 1/4" ............................... 181863-000 .........181863-000 .........181863-000 ....... 181863-000
10 ..... Igniter ........................................................ 9006101205 ....... 9006101205 ........ 9006101205 ..... 9006101205
11 ..... ObservationWindow ................................. 9006102215 ....... 9006102215 ........ 9006102215 ..... 9006102215
12 ..... Screen Wire.............................................. 9006027015 ....... 9006027015 ........ 9006027015 ..... 9006027015
13 ..... Stud 5-16-18 x 1 3/4" ................................ 196881-000 .........196881-000 .........196881-000 .......196881-000
14 ..... Truss Hd Machine Screw 1/4-20 x 1.00" ... 194816-000 .........194816-000 .........194816-000 ....... 194816-000
15 ..... Viewport Gasket ....................................... 9006103215 ....... 9006103215 ........ 9006103215 ..... 9006103215
A.O. Smith Water Heater Parts Fulfillment • phone: [phone] • www.hotwater.com
PRINTED 0607 197728-001

5
BLOWER / BURNER ASSEMBLY - MODELS 199/A & 250/A
BTH 199/A & 250/A BTH 199/A & 250/A
Item Description 100 101
1...... Blower Assembly ...................................... 9006274005 ....................................... 9006274005
2...... Burner ....................................................... 9006279005 ....................................... 9006279005
3...... Burner - Adapter ........................................ 197607-000 ....................................... 197607-000
4...... Burner - Gasket A .....................................197618-000 ....................................... 197618-000
5...... Burner Flange ............................................197611-000 ....................................... 197611-000
6...... Burner Gasket B ........................................197257-000 ....................................... 197257-000
7...... CondensateTee ........................................181865-000 ....................................... 181865-000
8...... Flame Sensor ........................................... 9006106205 ....................................... 9006106205
9...... Flange-Gasket ...........................................194817-000 ....................................... 194817-000
10 .... Gas Valve - Venturi Assembly .................. 9006285005 ....................................... 9006286005
11 .... Hose Barb .................................................181863-000 ....................................... 181863-000
12 .... Igniter ....................................................... 9006101205 ....................................... 9006101205
13 .... IntakeConnector ....................................... 197604-000 ....................................... 197604-000
14 .... Low gas switch ......................................... 9006255015 ....................................... 9006256015
15 .... Observation Window ................................. 9006102215 ....................................... 9006102215
16 .... Stud 5/16-18 x 1 3/4" ................................. 196881-000 ....................................... 196881-000
17 .... Truss Hd. Mach. Screw 1/4-20 x 1.00 ....... 194816-000 ....................................... 194816-000
18 .... Venturi Gasket .......................................... 197789-000 ....................................... 197789-000
19 .... Venturi Mounting Screw .............................197790-000 ....................................... 197790-000
20 .... Viewport Gasket ....................................... 9006103215 ....................................... 9006103215
21 .... Wire Screen ............................................. 9006027015 ....................................... 9006027015
*Item may be purchased from local hardware store.
A.O. Smith Water Heater Parts Fulfillment • phone: [phone] • www.hotwater.com
PRINTED 0607 197728-001

6
GAS VALVE ASSEMBLY - MODELS 120/A
BTH 120/A BTH 120/A
Item Description 100 101
1...... Gas Valve ................................................. 9004535205 ....................................... 9004536205
2...... Orifice ....................................................... 9006259015 ....................................... 9006257015
3...... Orifice Holder ............................................ 9006094215 ....................................... 9006094215
4...... Switch-Low Gas Pressure ........................ 9006256015 ....................................... 9006255015
GAS VALVE ASSEMBLY - MODELS 150/A
BTH 150/A BTH 150/A
Item Description 100 101
1...... Gas Valve ................................................. 9006283005 ....................................... 9006284005
2...... Orifice ....................................................... 9006260015 ....................................... 9006258015
3...... Orifice Holder ............................................ 9006094215 ....................................... 9006094215
4...... Switch-Low Gas Pressure ........................ 9006256015 ....................................... 9006255015
A.O. Smith Water Heater Parts Fulfillment • phone: [phone] • www.hotwater.com
PRINTED 0607 197728-001

7
EXHAUST CONNECTOR ASSEMBLY - MODELS 120/A - 250/A
BTH 120/A - 250/A
Item Description 100 / 101
1...... Exhaust Connector ................................... 9006157205
2...... Exhaust Elbow Assembly ......................... 9006261005
*2 ...... Exhaust Elbow Assembly (Canada) ......... 9006332005
3...... Tubing-Condensate ................................... 9006110215
*Effective July 1, 2008
VENT KIT ASSEMBLY - MODELS 120/A - 250/A
BTH 120/A - 250/A
Item Description 100 / 101
1...... Exhaust Screen ........................................ 9006027015
2...... Intake-Screen Collar Assembly ................. 182162-000
3...... PVC 45 Degree Elbow ............................... 181901-000
3...... PVC 45 Degree Elbow (Canada) ................ 197868-000
4...... Silicone..................................................... 9004366105
5...... Wall Plate................................................. 9004364105
ELECTRONIC ANODE ASSEMBLY - MODELS 120/A - 250/A
BTH 120/A BTH 150/A, 199/A, 250/A
Item Description 100 / 101 100 / 101
1...... Electronic Anode ........................................... - - - - -............................................9006246005
2...... Electronic Anode ...................................... 9006247005 ....................................... 9006247005
A.O. Smith Water Heater Parts Fulfillment • phone: [phone] • www.hotwater.com
PRINTED 0607 197728-001

8
A.O. Smith Water Heater Parts Fulfillment
125 Southeast Parkway
Franklin, TN 37068
1-800-433-2545
www.hotwater.com
OPTIONAL VENT KIT ASSEMBLY FOR 4" VENTING (ALL MODELS) #9006311005 (U.S.)
BTH 120/A thru 250/A
Item Description 100 / 101
1...... Silicone ..................................................... 9004366105
2...... Wall Plate ..................................................197392-000
3...... Vent Terminal Assembly 4" ....................... 197804-000
PRINTED 0607 197728-001
OPTIONAL VENT KIT ASSEMBLY FOR 4" VENTING (ALL MODELS) #9006339005 (CANADA)
BTH 120/A thru 250/A
Item Description 100 / 101
1...... Silicone ..................................................... 9004366105
2...... Wall Plate.................................................. 197392-000
3...... Vent Terminal Assembly 4" ....................... 197879-000