BTH 120, 150, 199, 250 Service Handbook Includes Parts List For Series 960 through 967 This Service Handbook was prepared by: The Training Department Irving, Texas $15.00 Printed in the U.S.A. 3 00 Part No.
BTH HANDBOOK TABLE OF CONTENTS PAGE PAGE Introduction. .................................. 2 Troubleshooting - continued Pressure Switch Continuity .......... 27-28 Voltage Test - Igniter .................... 29 250 Blower Test ........................... 29 Gas Pressure Test ....................... 30 Installation Clearances.................................. 3-4 Air Requirements ........................ 5-9 Contaminated Air ........................ 10 Flammable ..................................
BTH HANDBOOK INTRODUCTION This service handbook is designed to aid in servicing and troubleshooting A. O. Smith BTH water heaters in the field. No duplication or reproduction of this book may be made without the express written authorization of the A. O. Smith Water Products Company. The following text and illustrations will provide you with a step by step procedure to verify proper installation, operation and troubleshooting procedures.
Installation: This portion of the handbook will review often overlooked installation considerations, taking note of necessary instruction requirements for the BTH 120 - 250 / 966 and 967 Series. The installation manual covers most of these items in detail. BTH heaters are approved for installation on combustible flooring. Most can be installed in an alcove with minimum clearances to combustibles or non-combustibles of 0 inches from the sides and rear, 0 inches from vent piping, and 1.
EXTERIOR CLEARANCES Horizontal Vent (using room air for combustion) WarningVent Hood(s) May Be Extremely Hot During Operation Vent Hood Must Be Mounted 4' Minimum Below Doors and Windows 4' Minimum Exhaust 4' Minimum Regulator 3' Min.
MINIMUM AIR FOR COMBUSTION 10 CUBIC FEET OF AIR PER 1,000 BTU 1,000 BTU 10 CU. FT. COMB. AIR + 2.5 CU. FT. EXCESS AIR Stoichiometric or theoretical complete combustion requires 10 cubic feet of air per 1000 BTUH input of the gas input. The National Fuel Gas Code also recommends an additional 2.5 cu.ft. of "excess air". This 12.5 cu.ft. minimum supply air per 100 BTUH input applies to natural and propane gas models.
MAKE-UP AIR DIRECT COMMUNICATION A fresh supply of make-up air for combustion can be supplied to the heater through make-up air ducts, which directly communicate with the out of doors. Two openings are required - one within 12 inches of the top of the enclosure and one within 12 inches of the bottom of the enclosure. Each opening shall have a free area of not less than 1 square inch per 4000 BTUH of the total input of all appliances within the enclosure.
MAKE-UP AIR VERTICAL DUCTS Often it is more practical to install vertical make-up air ducts to the out doors. Again, two openings are required - within 12 inches (30 cm.) of the top of the enclosure and one within 12 inches (30 cm.) of the bottom of the enclosure. Each opening shall have a free area of not less than 1 square inch per 4000 BTUH of the total input of all appliances within the enclosure. A. O.
MAKE-UP AIR HORIZONTAL DUCTS r h Ai Fres r h Ai s e r F When the heater is installed in an interior room with no roof access for vertical ducts, horizontal make-up ducts should be installed. When using horizontal ducts, two openings are required - within 12 inches (30 cm.) of the top of the enclosure and one within 12 inches (30 cm.) of the bottom of the enclosure. Each opening shall have a free area of not less than 1 square inch per 2000 BTUH of the total input of all appliances within the enclosure.
INSUFFICIENT MAKE-UP AIR BACKDRAFT Insufficient make-up air is a major cause of combustion problems. One common example is in a restaurant installation where exhaust vent equipment was not considered in sizing make-up air requirements. This may result in air being backdrafted by the restaurant exhaust equipment through the heater causing flue gas spillage, flame roll out, improper combustion, inconsistent pilot operation, and/or erratic heater shutdown.
CONTAMINATED AIR = RUST CHIPS Along with adequate make-up air, the quality of the air is important. Contaminants in combustion air can lead to premature heater failure. Vapors from bleaches, soaps, salts, etc. are drawn into the combustion chamber with the make up air and, once fired, mix with water vapor in the gasses to form extremely corrosive hydrochloric or hydrofluoric acid an other corrosive byproducts. Dust drawn in may build up on the blower or clog the main burner ports.
CONDENSATION The average dewpoint of natural gas flue products is 127 °F. Propane flue products is 119° F. With 70° F ambient air temperature and 180° F stored water temperature, exhaust gas will be approximately 140° F. Recommended safe water storage temperature is 120° F. NOTE: This unit can be vented using only PVC (Class 160, ASTM D2241; Schedule 40, ASTM D-1785; or Cellular Core Schedule 40 DWV, ASTM F-891), Schedule 40 CPVC (ASTM F-411), or ABS (ASTM D-2661) pipe.
VENTING Equivalent Feet of Pipe Intake or Exhaust VENT LENGTH TABLE Number of 90° Elbows One (1) Two (2) Three (3) Four (4) Five (5) Six (6) 4" Maximum 3" Pipe 3" Minimum Maximum Pipe (Feet) Pipe (Feet) (Feet) 7 45 115 7 40 110 7 35 105 7 30 100 -7 95 -7 90 4-inch PVC may be used for a MAXIMUM intake of ONE HUNDRED TWENTY (120) EQUIVALENT FEET and a MAXIMUM exhaust of ONE HUNDRED TWENTY (120) EQUIVALENT FEET.
BTH Sequence of Operation Power Off Display Sequence Power On If ECO is closed low gas pressure switch is closed (120 & 250 models only) Display "00" Call for heat (Temp. setting less diff.) Supply Volts "120" Blower Prepurge 20 Seconds Pressure Switch Information Blocked Inlet-NC Opens .75" wc Neg. Press BTH 120 and 250 Only Low Supply Gas Pressure Switch NC 4.3" w.c. gas press. to close Blocked Outlet-NC Opens at 2.5" Positive Press Blower Prover Closes at .
MULTIPLE UNIT - WATER PIPING PARALLEL PIPING HOT TO FIXTURES REVERSE RETURN PIPING 2" 1 1/2" RETURN COLD EXHAUST VENT TO OUTDOORS 2" PUMP NOTES APPLY TO ALL SYSTEMS: *ADD GATE VALVES TO INLET AND OUTLET OF EACH UNIT FOR ISOLATION FLEXIBILITY. LOCATE AT THE SAME POINT FROM TEE. CHECK VALVE ** ADD THERMAL EXPANSION TANK TO COLD WATER SUPPLY IF NECESSARY. PARALLEL PIPING WITH TANK CONDENSATION HOSE MUST BE ALLOWED TO DRAIN. NOTE: T&P VALVES MUST BE PIPED TO OPEN DRAIN OR PER LOCAL CODE.
CYCLONE BTH NORMAL INDICATIONS / READINGS DURING CALL FOR HEAT Tank temperature below control setting (to check control setting, press reset button) • On/off switch “on” Note: Power must be on at least 4 seconds before reset can be pressed to indicate control setting.
CYCLONE BTH NORMAL INDICATIONS / READINGS 120 VAC present to ground and: • Each black terminal of on/off switch • CN1 black term 1 • CN 2 black term 1 • CN 4 black term 1 • CN 5 white term 1 (only while ignitor is heating) Note: CN 6 black term 2 will give reading of 90-100 volts – ignore this reading. 24 VAC present to ground and: • CN 3 red term 1 and red term 4 • CN 4 blue term 4 • CN 6 blue term 3, brown term 4, and brown term 6 • Each terminal of the 3 or 4 pressure switches A. O.
NORMAL INDICATIONS / READINGS AFTER TANK IS SATISFIED Tank temperature above control setting • On/off switch is “on” Normal conditions will be 120 volts present to ground and: • Each black terminal of on/off switch • CN 1 black term 1 • CN 4 black term 1 Note: CN 6 black term 2 (flame sensor) may display 90-100 VAC – this is a non-reading, ignore it 24 VAC present to ground and: • CN 3 red term 1 and red term 4 • CN 4 blue term 4 • CN 6 brown term 4 • Blocked inlet switch – each terminal (tube connects to
TROUBLESHOOTING PRE-SERVICE TIPS CHECK THAT: • Tank is full of water • Exhaust and intake vent do not exceed allowable limits • All plugs into boards are secure • Condensate hose is drained and open • 115-120 VAC is supplied to the heater (including polarity check a neutral to ground check results in "0" volts reading) • Proper (natural or propane) gas is supplied CONTINUITY CHECKS Condition: After 20 second prepurge is complete No main burner • On/Off switch is off • Igniter wires disconnected from CN5
TROUBLESHOOTING STEP 2 - CHECK CONTINUITY THROUGH THE VALVE COIL STEP 2. Check Continuity Through The Valve Coil • • • • Power off Gas valve - coil continuity check Disconnect wires from gas valve Multimeter set to scale. OHMS RESISTANCE TABLE BTH Model Gas OHMS Resistance 120 N 100 150, 199 N 560 150, 199 P 63 250 N 63 IF… meter does not indicate +/- 7.5% of table meter indicates +/- 7.5% of table Usually a defective coil will be indicated by a "0" or "1" on the meter. A. O.
TROUBLESHOOTING STEP 3 - CONTROL BOARD CHECK STEP 3. 120 VAC SUPPLIED TO CONTROL BOARD - CN1 CONNECTION • Disconnect plug from CN1 terminal • Power switch "On" - 120 VAC indicator light should be "On" Check for 120 VAC black wire terminal to white wire terminal on plug. Volts IF … 1 2 0 V A C is n o t p re s e n t 1 2 0 V A C is p re s e n t R e a t t a c h p lu g t o C N 1 t e rm in a l. A. O.
TROUBLESHOOTING STEP 4 - TRANSFORMER TEST STEP 4. 120 VAC SUPPLIED TO 24 VAC TRANSFORMER CN4. • Disconnect CN 4 plug from board Check for 120 VAC between the black terminal connect and white terminal connect on the control board. IF… 120 VAC is not present 120 VAC is present THEN check CN 1 replace contr go to Step 5. Reconnect the plug to CN 4 terminal. A. O.
TROUBLESHOOTING STEP 5 - 24 VAC FROM TRANSFORMER STEP 5. 24 VAC FROM TRANSFORMER 24 VAC transformer indicator light should be "on". Insert probe into back of connect. Check for 24 VAC blue wire connect to ground and yellow wire connect to ground. Meter Should Read 24 VAC IF… blue to ground does not have 24 VAC blue to ground does have 24 VAC yellow to ground does have 24 VAC yellow ground does not have 24 VAC THEN replace trans continue replace trans go to Step 6. STEP 6 - CONTROL BOARD TEST STEP 6.
TROUBLESHOOTING STEP 6. (continued) IF… THEN 24 VAC is not present replace 24 VAC is present go to St STEP 7 - TEST FOR 24 VAC THRU ECO STEP 7. 24 VAC THRU ECO (ECO IS NOT A THERMISTOR). Reinstalled plug. Check for 24 VAC from back of red 1 plug to ground. IF ... TH E N 24 V A C is not pres ent replac e go to s t 24 V A C is pres ent N ote: R es is tanc e thru E C O - plug red 1 to plug red 4 - is .5 o A. O.
TROUBLESHOOTING STEP 8 - TEMPERATURE THERMISTOR CHECK STEP 8. TEMPERATURE THERMISTOR CHECK. The ohm’s resistance thru a thermistor is interpreted by the control board as a water temperature reading. • Note tank water temperature on display board or tank a thermometer reading from the T&P valve and drain valve • Disconnect plugs from CN 3 and CN 8 • Set multimeter to read “resistance” (20 K scale) Check the ohm’s resistance from black to black on the CN 3 plug and black to black on the CN 8 plug.
TROUBLESHOOTING STEP 9 - BLOWER SPEED TEST Reconnect plugs to board. Blower operation check • Tank must be calling for heat (minimum setting available is 80 F) • Set multimeter to read 120 VAC STEP 9. Check for 120 VAC from the back of CN 2 plug term 1 (black) to ground and from CN 2 term 2 (white) to ground. He a te r m ode ls Ohm s re sista nce 966 or 967 de sire d +/- 7.5% BTH 120 11.5 BTH 150 AND 199 11.2 BTH 250 7.
TROUBLESHOOTING STEP 9A - BLOWER SPEED REDUCTION TEST BTH 250 ONLY HAS BLOWER SPEED REDUCTION BOARD Blower wires (CN 2), igniter wires (CN 5), gas valve pressure switches and flame sense (CN6) plug directly into blower speed reduction board. The cables from the blower speed reduction board plug into the control board recepticles CN 2, CN 5, and CN 6. • 120 VAC present at CN 2 term 1 to gnd. • Blower not running • Tank is calling for heat STEP 9A.
TROUBLESHOOTING STEP 10 - CONTINUITY PRESSURE SWITCH TEST - ALL MODELS Power Off STEP 10. CONTINUITY CHECK OF EACH PRESSURE SWITCH - TERMINAL TO TERMINAL.
TROUBLESHOOTING STEP 11 - 24 VAC CHECK STEP 11. 24 VAC CHECK – Each terminal of pressure switch to ground; bottom (B) first then top (T) to ground next.
TROUBLESHOOTING STEP 13 - VOLTAGE TEST ON 250 MODELS ONLY STEP 13. VOLTAGE TEST TO IGNITER. HSI PLUG MAY BE REMOVED. Check for 120 VAC on the control circuit board - plug CN 5, term 1 to ground. IF… 120 VAC is not present 120 VAC is present THEN replace control b igniter should be STEP 13 STEP 13A STEP 13A - BLOWER SPEED CHECK ON 250 MODELS ONLY STEP 13A. ON BTH 250 MODELS ONLY. Also check for 120 VAC on the blower speed board - CN 5 term 1 to ground.
TROUBLESHOOTING STEP 14 - SUPPLY GAS PRESSURE TEST STEP 14. CHECK SUPPLY GAS PRESSURE Attach monometer or gas pressure gauge to pressure tap on gas valve or use adapter to check pressure ahead of valve as near as possible to valve. BTH 150, 199 Propane BTH 250 Natural Gas Valve BTH 150, 199 Natural Gas Valve IF… supply gas pressure is not between 4.5 and 14" w.c. natural gas or 11.0 and 14" w.c.
COMPONENT PART INFORMATION GAS VALVES Model AOS PT# W.R. 36E36-319 192966-0 Nat. Hnwl VR8305M-4009 192797-Nat. Voltage 24 VAC 24 VAC W.R. 36C68-814 W.R. 36C68-809 24 VAC 24 VAC 192454-1 Prop 1922454-0 Nat. HSI Flame Rod AOS PT# 192478 Hot Surface Igniter (HSI) AOS PT# 192478 Flame S .7 Micro (µ) Voltage 120 VAC ORIFICE TABLE Orifice Table BTH Model Main Burner Orifice No. Main Orifice Size Inches 199 192477-0 0.304 150 192477-1 0.235 250 192477-2 0.360 120 192477-3 0.204 199 Prop 192477-4 .
PRESSURE SWITCHES Inches Model Series BTH 120 966 BTH 120 967 BTH 150 960 BTH 150 962 BTH 150 966 BTH 150 967 (Prop.) BTH 199 960 BTH 199 962 BTH 199 966 BTH 199 967 (Prop.) BTH 250 962 BTH 250 966 N.C. = normally closed N.O. = normally open A. O. Smith Water Products Company Irving, Texas 2000© Blocked Inlet Blow N.C. Opens Prover Closes at: -1.0 -2.0 -0.75 -1.6 -1.6 -0.76 -0.77 -2.0 -0.95 -0.77 0.45 0.45 0.42 0.45 0.45 0.45 0.42 0.45 0.45 0.45 0.43 0.
WIRING CONNECTIONS BTH 150, 199 DIAGRAM BTH 120 and 250 DIAGRAM BTH 250 DIAGRAM A. O.
SERVICING AIDS 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. This type product is polarity sensitive. Be certain that your electrical supply wire neutral has no voltage. This unit will produce condensation--quite heavily at times. The outlet drain hose must be allowed to drain. Exhaust Vent piping must also drain condensate. Code 11 error would imply that these must be checked. If this unit is located in a cold climate, take steps to ensure that exhaust vapors are not inhaled by the air intake vent.
QUESTIONS AND ANSWERS Q: How much electrical power is required for a BTH water heater? A. The BTH models draw approximatley 5.0 Amps Max. Q. When should BTHs be delimed? A. Many variables affect the lime build up process including: • Water temperature - the amount of lime accumulation during the same period of time will be nearly 2 times greater if water is stored at 140 degress F than at 120 degrees F. A 180° setting may accumulate seven times more lime - in a period of time - than a 140° setting.
BTH ERROR CODES BTH COMMON ERROR CODES Code 04 - ECO Open The hi-limit has been tripped or is malfunctioning -- Try to reset the ECO. Test to see if ECO is malfunctioning. Also make sure to test the lower temp probe for continuity. If it has failed the unit may be stacking Code 02 - Ignition fail after Has failed to ignite after 3 tries -- Could be a gas pressure problem, 3 attempts condensate tee, or venting.
SERVICE CHECKLIST This is not intended to be an all-inclusive list of the problems that the Service Agent may encounter. Any item checked "no" on this list should be thoroughly investigated and corrective action taken, if required.
COMMERCIAL WATER HEATER PARTS LIST CYCLONE XHE® MODEL BTH-120 SERIES 966 (PARTIAL PARTS LISTING) 33 EXHAUST TERMINAL DIRECT VENT INTAKE TEE CLEAN OUT ASSEMBLY A.O. SMITH WATER PRODUCTS CO., INC. PARTS INFORMATION PHONE: 1-800-433-2545 FAX: 1-800-433-2515 • WWW.HOTWATER.COM A. O.
CYCLONE XHE® MODEL BTH-120 WATER HEATER PARTS LIST (PARTIAL) SERIES 966 ITEM 1 ..................... 2 ..................... 5 ..................... 6 ..................... 20 ................... 22 ................... 24 ................... 25 ................... 27 ................... 28 ................... 29 ................... 30 ................... 33 ................... 36 ................... A. O. Smith Water Products Company Irving, Texas 2000© DESCRIPTION BTH-120 Anode ........................
CYCLONE XHE® MODEL BTH-120 CONTROLS PARTS LIST - SERIES 966 ITEM DESCRIPTION BTH-120 1 ..................... Transformer ............................... 192608-001 2 ..................... Control Board ............................ 193822-000 3 ..................... E.C.O./Temperture Probe .......... 192606-000 4 ..................... Blower Proving Air Switch ....... 193295-000 7 ..................... Blower Assembly ...................... 193341-000 8 ..................... Igniter Assembly.............
CYCLONE XHE® MODEL BTH-120 BURNER & BLOWER PARTS LIST - SERIES 966 ITEM 1 ..................... 2 ..................... 6 ..................... 7 ..................... 9 ..................... 13 ................... 14 ................... 15 ................... 18 ................... 19 ................... DESCRIPTION BTH-120 Burner ........................................ 194114-003 Igniter Assembly........................ 192638-000 Barb, Hose, 3/16" ......................
COMMERCIAL WATER HEATER PARTS LIST CYCLONE XHE® MODEL BTH-150, BTH-199 SERIES 966 & 967 (PARTIAL PARTS LISTING) EXHAUST TERMINAL DIRECT VENT INTAKE TEE CLEAN OUT ASSEMBLY A.O. SMITH WATER PRODUCTS CO., INC. PARTS INFORMATION PHONE: 1-800-433-2545 FAX: 1-800-433-2515 • WWW.HOTWATER.COM A. O.
CYCLONE XHE® MODELS BTH-150& BTH-199 SERIES 966 & 967 CONTROLS PARTS LIST (PARTIAL) ITEM DESCRIPTION 1 ........ Anode .......................... 2 ........ Panel, Front ................. 3 ........ Burner Assembly ......... 4 ........ Blower ......................... 5 ........ Panel, Left Side .......... 6 ........ Panel, Right Side ........ 19 ........ Valve, Drain ................. 20 ........ Condensate Hose ....... 22 ........ Barb, Hose .................. 24 ........ Exhaust Terminal ........ 25 ..
CYCLONE XHE® MODELS BTH-150 & BTH-199 SERIES 966 & 967 CONTROLS PARTS LIST BTH-150 ITEM 1........ 2........ 3........ 4........ 7........ 8........ 9........ 10........ 11........ 12........ 14........ 15........ 16........ 17........ 18........ DESCRIPTION NATURAL PROPANE BTH-199 NATURAL PROPANE Transformer ................. 192608-001 ........ 192608-001 ........192608-001 .......... 192608-001 Control Board .............. 193822-000 ........ 193822-000 ........193822-000 .......... 193822-000 E.C.
CYCLONE XHE® MODELS BTH-150 & BTH-199 SERIES 966 & 967 BURNER & BLOWER PARTS LIST BTH-150 ITEM DESCRIPTION NATURAL PROPANE 1 ....... Burner........................ 194114-001 ...... 194114-005 2 ....... Igniter Assembly ....... 192638-000 ...... 192638-000 7 ....... Flame Rod Assembly 192478-000 ...... 192478-000 9 ....... Orifice ........................ 192477-001 ...... 192477-005 13 ....... Valve, Gas.................. 192797-000 ...... 192454-001 14 ....... Blower .......................
COMMERCIAL WATER HEATER PARTS LIST CYCLONE XHE® MODEL BTH-250 SERIES 966 (PARTIAL PARTS LISTING) EXHAUST TERMINAL DIRECT VENT INTAKE TEE CLEAN OUT ASSEMBLY A.O. SMITH WATER PRODUCTS CO., INC. PARTS INFORMATION PHONE: 1-800-433-2545 FAX: 1-800-433-2515 • WWW.HOTWATER.COM A. O.
CYCLONE XHE® MODEL BTH-250 WATER HEATER PARTS LIST (PARTIAL) SERIES 966 ITEM 1 ..................... 2 ..................... 3 ..................... 4 ..................... 5 ..................... 6 ..................... 17 ................... 19 ................... 20 ................... 22 ................... 24 ................... 25 ................... 27 ................... 28 ................... 29 ................... 33 ................... DESCRIPTION BTH-250 Anode ................................
CYCLONE XHE® MODELS BTH-250 CONTROLS PARTS LIST - SERIES 966 ITEM DESCRIPTION BTH-250 1 ..................... Transformer ............................... 192608-001 2 ..................... Control Board ............................ 193822-000 3 ..................... E.C.O./Temperture Probe .......... 192606-000 4 ..................... Blower Proving Air Switch ....... 193295-000 7 ..................... Blower Assembly ...................... 193203-000 8 ..................... Igniter Assembly............
CYCLONE XHE® MODELS BTH-250 BURNER & BLOWER PARTS LIST - SERIES 966 ITEM 1 ..................... 2 ..................... 7 ..................... 9 ..................... 13 ................... 14 ................... 15 ................... 18 ................... 19 ................... DESCRIPTION BTH-250 Burner ........................................ 194114-002 Igniter Assembly........................ 192638-000 Flame Rod Assembly ................ 192478-000 Orifice ......................................
COMMERCIAL WATER HEATER PARTS LIST CYCLONE XHE® MODEL BTH-150, BTH-199 SERIES 960 EXHAUST TERMINAL DIRECT VENTTERMINAL CLEAN OUT ASSEMBLY A.O. SMITH WATER PRODUCTS CO., INC. PARTS INFORMATION PHONE: 1-800-433-2545 FAX: 1-800-433-2515 • WWW.HOTWATER.COM A. O.
CYCLONE XHE® MODEL BTH-150 & BTH-199 WATER HEATER PARTS LIST SERIES 960 ITEM 1 ..................... 2 ..................... 3 ..................... 4 ..................... 5 ..................... 6 ..................... 17 ................... 20 ................... 22 ................... 24 ................... 25 ................... 27 ................... 28 ................... 29 ................... DESCRIPTION BTH-150 BTH-199 Anode ................................................ 043817-053 .....
CYCLONE XHE® MODEL BTH-150 & BTH-199 WATER HEATER PARTS LIST SERIES 960 ITEM 1 ............. 2 ............. 3 ............. 4 ............. 5 ............. 6 ............. 7 ............. 8 ............. 9 ............. 10 ........... 11 ............ 12 ........... 13 ........... 14 ........... 15A ......... 16A ......... 17A ......... 18A ......... 19 ........... DESCRIPTION BTH-150 Transformer ....................................... 192608-000 ......... Control Board .................................
CYCLONE XHE® MODEL BTH-150 & BTH-199 BURNER & BLOWER PARTS LIST SERIES 960 ITEM 1 ..................... 2 ..................... 4 ..................... 5 ..................... 6 ..................... 7 ..................... 9 ..................... 10 ................... 13 ................... 14 ................... 15 ................... 17 ................... 18 ................... DESCRIPTION BTH-150 BTH-199 Burner ........................................ 192416-000 ..... 192416-000 Igniter Assembly.
COMMERCIAL WATER HEATER PARTS LIST CYCLONE XHE® MODEL BTH-250 SERIES 962 (PARTIAL PARTS LISTING) EXHAUST TERMINAL DIRECT VENT INTAKE TEE CLEAN OUT ASSEMBLY A.O. SMITH WATER PRODUCTS CO., INC. PARTS INFORMATION PHONE: 1-800-433-2545 FAX: 1-800-433-2515 • WWW.HOTWATER.COM A. O.
CYCLONE XHE® MODEL BTH-250 WATER HEATER PARTS LIST (PARTIAL) SERIES 962 ITEM 1 ..................... 2 ..................... 3 ..................... 4 ..................... 5 ..................... 6 ..................... 17 ................... 20 ................... 22 ................... 24 ................... 25 ................... 27 ................... 28 ................... 29 ................... DESCRIPTION BTH-250 Anode ................................................ 043817-004 Cover, Jacket ....
CYCLONE XHE® MODELS BTH-250 CONTROLS PARTS LIST - SERIES 962 ITEM 1 ............. 2 ............. 3 ............. 4 ............. 5 ............. 6 ............. 7 ............. 8 ............. 9 ............. 10 ........... 11 ............ 12 ........... 13 ........... 14 ........... 15 ........... 16 ........... 17 ........... 18 ........... 19 ........... 20 ........... 21 ........... A. O. Smith Water Products Company Irving, Texas 2000© DESCRIPTION BTH-250 Transformer ..............................
CYCLONE XHE® MODELS BTH-250 BURNER & BLOWER PARTS LIST - SERIES 962 ITEM 1 ..................... 2 ..................... 3 ..................... 4 ..................... 5 ..................... 6 ..................... 7 ..................... 9 ..................... 10 ................... 13 ................... 14 ................... 15 ................... 17 ................... 18 ................... 19 ................... DESCRIPTION BTH-250 Burner ........................................
COMMERCIAL WATER HEATER PARTS LIST CYCLONE XHE® MODEL BTH-150 & BTH-199 SERIES 962 (PARTIAL PARTS LISTING) EXHAUST TERMINAL DIRECT VENT TERMINAL CLEAN OUT ASSEMBLY A.O. SMITH WATER PRODUCTS CO., INC. PARTS INFORMATION PHONE: 1-800-433-2545 FAX: 1-800-433-2515 • WWW.HOTWATER.COM A. O.
CYCLONE XHE® MODEL BTH-150 & BTH-199 WATER HEATER PARTS LIST - SERIES 962 ITEM 1 ..................... 2 ..................... 3 ..................... 4 ..................... 5 ..................... 6 ..................... 17 ................... 20 ................... 22 ................... 24 ................... 25 ................... 27 ................... 28 ................... 29 ................... DESCRIPTION BTH-150 BTH-199 Anode ................................................ 043817-053 .....
CYCLONE XHE® MODELS BTH-150 & BTH-199 CONTROLS PARTS LIST - SERIES 962 ITEM DESCRIPTION BTH-150 1 .............. 2 .............. 3 .............. 4 .............. 5 .............. 6 .............. 7 .............. 8 .............. 9 .............. 10 .............. 11 .............. 12 .............. 13 .............. 14 .............. 15 .............. 16 .............. 17 .............. 18 .............. Transformer ...................................... 192608-000 Control Board ....................
CYCLONE XHE® MODELS BTH-150 & BTH-199 BURNER & BLOWER PARTS LIST SERIES 962 ITEM DESCRIPTION BTH-150 BTH-199 1 ...................... 2 ...................... 4 ...................... 5 ...................... 6 ...................... 7 ...................... 9 ...................... 10 ...................... 13 ...................... 14 ...................... 15 ...................... 17 ...................... Burner ........................................ 192416-000 .....
Notes A. O.
Notes A. O.
