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500 Tennessee Waltz Parkway
Ashland City, TN 37015
www.hotwater.com
WARNING: If the information in these
instructions is not followed exactly, a fire
or explosion may result causing property
damage, personal injury or death.
Do not store or use gasoline or other
flammable vapors and liquids in the
vicinity of this or any other appliance.
WHAT TO DO IF YOU SMELL GAS:
•
Do not try to light any appliance.
•
Do not touch any electrical switch; do
not use any phone in your building.
•
Immediately call your gas supplier
from a neighbor's phone. Follow the
gas supplier's instructions.
•
If you cannot reach your gas supplier,
call the fire department.
Installation
performed by a
service agency or the gas supplier.
Thank you for buying this energy efficient water heater.
We appreciate your confidence in our products.
place these instructions adjacent to heater and notify owner to keep for future reference.
PRINTED 1012
commercial gas water heaters
and
service
must
qualified
installer,
be
instruction manual
Bth-120/150/199/250
series 100 & 101
installation - operation - serVice
- maintenance - limited warranty
Read and understand this instruction
manual and the safety messages
herein before installing, operating or
servicing this water heater.
Failure to follow these instructions and
safety messages could result in death
or serious injury.
This manual must remain with the
water heater.
models
197727-003
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Table of Contents
Related Manuals for A.O. Smith BTH-120
Summary of Contents for A.O. Smith BTH-120
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Page 1: Instruction Manual
Bth-120/150/199/250 series 100 & 101 500 Tennessee Waltz Parkway installation - operation - serVice Ashland City, TN 37015 - maintenance - limited warranty www.hotwater.com WARNING: If the information in these instructions is not followed exactly, a fire or explosion may result causing property damage, personal injury or death. -
Page 2: Table Of Contents
taBle of contents SAFE INSTALLATION, USE AND SErVICE.......... 3 Direct Vent Installation ..............25 APPrOVALS ..................3 Vertical Termination Installation ............27 GENErAL SAFETy INFOrmATION ............4 Sidewall Termination Installation............29 Precautions ..................4 Concentric Termination Installation ..........30 GrOUNDING INSTrUCTIONS ............4 4 Inch Concentric Termination Installation ........ -
Page 3: Safe Installation, Use And Service
safe installation, use and serVice The proper installation, use and servicing of this water heater is extremely important to your safety and the safety of others. many safety-related messages and instructions have been provided in this manual and on your own water heater to warn you and others of a potential injury hazard. -
Page 4: General Safety Information
general safety information precautions hydrogen gas flammaBle DO NOT USE THIS WATEr HEATEr IF ANy PArT HAS BEEN UNDEr WATEr. Immediately call a qualified service agency to inspect the water heater and to make a determination on what steps should be taken next. Explosion Hazard If the unit is exposed to the following, do not operate heater until all corrective steps have been made by a qualified... - Page 5 general safety information Fire or Explosion Hazard Fire Hazard Do not store or use gasoline or other flammable vapors and For continued protection against liquids in the vicinity of this or any other appliance. risk of fire: Avoid all ignition sources if you smell gas. Do not install water heater on Do not expose water heater controls to excessive gas carpeted floor.
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Page 6: Introduction
introduction Thank you for purchasing this water heater. Properly installed Detailed installation diagrams are also found in this manual. and maintained, it should give you years of trouble free service. These diagrams will serve to provide the installer with a reference. -
Page 7: Features And Components
features and components Basic operation Blower/Burner assemBly detail INTAKE AIR COMBUSTION The water heaters covered in this manual have a helical coil (combustion air) BLOWER shaped heat exchanger that is submerged in the storage tank. CONNECTION The water heater’s main Burner is a radial design burner, it 3 INCH PVC is mounted on the top and fires downward through the heat exchanger. -
Page 8: Top Views
top Views 120,000 & 150,000 Btu/hr MODELS TOP VIEW FRONT figure 3 Bth 120 & 150 components 10. Vent connection (exhaust elbow) - 3 inch PVC. 1. Water Heater’s 120 VAC on/off switch. 11. Combustion Blower. 2. Powered anode rods. The water heater’s covered in this 12. - Page 9 top Views (cont) 199,000 & 250,000 Btu/hr MODELS TOP VIEW FRONT figure 4 Bth 199 & 250 components Gas Pressure requirements and Table 3 on page 12. 1. Water Heater’s 120 VAC on/off switch. 10. Vent connection (exhaust elbow) - 3 inch PVC. 2.
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Page 10: Side Views
LEFT SIDE RIGHT SIDE 120,000 & 150,000 Btu/hr MODELS 199,000 & 250,000 Btu/hr MODELS figure 5 side Views 9. Temperature-Pressure relief Valve discharge pipe - see T&P 1. Cleanout access panel, covers water heater cleanout Valve Discharge Pipe requirements: on page 16. opening. -
Page 11: Installation Considerations
installation considerations rough in dimensions SUPPLY GAS INTAKE AIR CONNECTION CONNECTION 3 INCH PVC WATER OUTLET HEIGHT FRONT BACK T & P VALVE VENT CONNECTION CLEANOUT 3 INCH PVC 3/4” NPT DRAIN (exhaust elbow) 1 1/2” NPT WATER INLET CONDENSATE DRAIN CONNECTION 1/2 INCH PVC These designs comply with the current edition of the American National Standard for Gas Water Heaters, Volume III, ANSI Z21.10.3 / CSA 4.3... -
Page 12: Locating The Water Heater
gas line connection siZe storage capacities taBle 1 taBle 2 † moDEl sERIEs NaTuRal Gas PRoPaNE Gas moDEl U. S. GALLONS lITERs bTH 120 100/101 3/4 "NPT 3/4 "NPT bTH 120 bTH 150 100/101 3/4 "NPT 3/4 "NPT bTH 150 bTH 199 100/101 3/4 "NPT... -
Page 13: Extended Vent Terminations
hard water There is a risk in using fuel burning appliances such as gas water heaters in rooms, garages or other areas where gasoline, other Where hard water conditions exist, water softening or the flammable liquids or engine driven equipment or vehicles are threshold type of water treatment is recommended. -
Page 14: Installation Requirements
installation reQuirements gas supply systems Positive lock-up gas pressure regulators must be rated at or above the input Btu/hr rating of the water heater they supply. Low pressure building gas supply systems are defined as those Supply gas regulators shall have inlet and outlet connections systems that cannot under any circumstances exceed 14”... -
Page 15: Mixing Valves
mixing ValVes HOT WATER OUTLET Water temperature over 125°F (52°C) can cause severe burns instantly 12” TO 15” resulting in severe injury or death. (30-38 cm) Children, the elderly and the TEMPERED WATER physically or mentally disabled are at OUTLET highest risk for scald injury. -
Page 16: Temperature-Pressure Relief Valve
temperature-pressure relief ValVe water in adequate quantities should circumstances demand. If the discharge pipe is not connected to a drain or other suitable means, the water flow may cause property damage. CAUTION Explosion Hazard Water Damage Hazard Temperature-Pressure Relief Valve must comply with ANSI Z21.22- •... -
Page 17: Condensate Drain
condensate drain comBustiBle material storage The water heaters covered in this manual are condensing appliances and require a building drain to be located in close proximity to allow the condensate to drain safely. Fire or Explosion Hazard Condensate drains from the water heater at the exhaust elbow located at the bottom. -
Page 18: Air Requirements
air reQuirements unusually tight construction In unconfined spaces in buildings, infiltration may be adequate to provide air for combustion, ventilation and dilution of flue gases. However, in buildings of unusually tight construction (for example, weather stripping, heavily insulated, caulked, vapor barrier, etc.) additional air must be provided using the methods Breathing Hazard - Carbon Monoxide Gas described in the Confined Space section that follows. -
Page 19: Fresh Air Openings For Confined Spaces
fresh air openings for confined spaces Alternatively a single permanent opening, commencing within 12 inches (300 mm) of the top of the enclosure, shall be provided. The following instructions shall be used to calculate the size, See Figure 11. The water heater shall have clearances of at number and placement of openings providing fresh air for least 1 inch (25 mm) from the sides and back and 6 inches (l50 combustion, ventilation and dilution in confined spaces. -
Page 20: Outdoor Air Through Two Vertical Ducts
outdoor air through two Vertical ducts When ducts are used, they shall be of the same cross sectional area as the free area of the openings to which they connect. The illustrations shown in this section of the manual are a The minimum dimension of rectangular air ducts shall be not less reference for the openings that provide fresh air into confined than 3 inches (7.62 cm). -
Page 21: Installation Requirements - Commonwealth Of Massachusetts
installation reQuirements - commonwealth of massachusetts commonwealth of massachusetts inspection The state or local gas inspector of the side wall horizontally For all side wall terminated, horizontally vented power vent, direct vented gas fueled equipment shall not approve the installation vent, and power direct vent gas fueled water heaters installed in unless, upon inspection, the inspector observes carbon every dwelling, building or structure used in whole or in part for... -
Page 22: Venting Installation
Venting installation 2. If the water heater is to be installed in a beauty shop, barber shop, cleaning establishment, a laundry with dry cleaning equipment or any space with contaminated air it is imperative that the water heater(s) be installed in a Direct Breathing Hazard - Carbon Monoxide Gas Vent configuration so that all air for combustion is derived •... -
Page 23: Bth 199 & 250 Intake Air Connection
Bth 199 & 250 intake air connection The intake air Tee fitting is factory installed with the 1/2 inch branch and hose barb angled to the right at approximately 130° BTH 199 and 250 models are factory equipped with a unique when viewed from the end, see Figure 16. -
Page 24: Venting Requirements
Venting reQuirements equivalent feet (36.5 m). IE: On Direct Vent installations both pipes can be up to 120 equivalent feet (36.5 m). approVed materials minimum eQuiValent lengths Approved vent and intake air pipe materials that may be used in three inch pipe the United States: The water heaters covered in this manual are certified to a •... -
Page 25: Venting Installation Sequence
Venting installation seQuence 9. All vent (exhaust) pipes must be pitched a minimum of a 1/4 inch per foot back to the water heater (to allow drainage of 1. read the General Venting Instructions on page 22 and condensate). Venting requirements on page 24 before proceeding. These 10. -
Page 26: Intake Air Connection
11. If installing 3 inch vent pipe connect the vent pipe to the 14. If installing 3 inch intake air pipe connect the intake air pipe to exhaust elbow on the water heater. the intake air connection on the water heater. 12. -
Page 27: Vertical Termination Installation
Vertical termination installation The intake air and vent terminations must have a minimum separation of 24” (61 cm) measured on center line as shown 1. Determine the location for the termination(s). in Figure 25 on page 28. In colder climates this separation should be increased to at least 48 inches (122 cm). - Page 28 2” (5 cm) MAXIMUM 24 INCHES (61 cm) MINIMUM FACTORY SUPPLIED 48 INCHES (122 cm) IN COLDER CLIMATES STANDARD TERMINATION FIELD POINTED DOWN TOWARDS FIELD INTAKE AIR SUPPLIED SUPPLIED TERMINATION THE GROUND 90° ELBOW 90° ELBOW NOTE: INTAKE AIR VENT (EXHAUST) TERMINATION TERMINATION FIELD SUPPLIED...
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Page 29: Sidewall Termination Installation
sidewall termination installation 7. Cut a 4 inch (10 cm) diameter hole for 3 inch pipe or 5 inch (13 cm) diameter hole for 4 inch pipe where the pipe(s) will 1. Determine the location for the termination(s). pass through the wall. note: The standard vent and intake air terminations are of note: Beware of concealed wiring and piping when cutting different design, see Figure 22 on page 27. -
Page 30: Concentric Termination Installation
concentric termination installation note: If this required 10 foot (3 m) distance to a parapet, vertical wall or structure cannot be maintained, standard 1. Concentric terminations must be ordered separately. BTH terminations must be used. See Vertical Termination 120 - 250 models must use the 4 inch concentric termination; Installation on page 27. -
Page 31: Inch Concentric Termination Installation
4 inch concentric termination installation When installing 4 inch intake air and vent pipe - connect the piping to the concentric termination using field supplied 4" x 3" reducer couplings and short sections of 3 inch pipe (18 INTAKE AIR CONNECTION INTAKE AIR PIPE 3 INCH PVC inches or less) pipe. -
Page 32: Multiple Concentric Termination Clearances
multiple concentric termination clearances four concentric terminations When installing multiple concentric terminations vertically through 1. When installing four concentric terminations through a roof or a roof or horizontally through a sidewall ensure the required through a sidewall in close proximity they may be arranged clearances (separation) between terminations are maintained. -
Page 33: Multiple Concentric Termination Arrangements
multiple concentric termination arrangements SIDEWALL The illustrations on this page show some of the installation arrangements for multiple concentric terminations that are allowed. See multiple Concentric Termination Clearances on page 32 for detailed information on clearances and additional arrangement options. note: When multiple concentric terminations are installed through a roof in the same location all termination caps must be at the same height measured from the ground. -
Page 34: Venting Arrangements
Venting arrangements power Vent Vertical power Vent horizontal figure 40 figure 41 direct Vent Vertical direct Vent horizontal figure 42 figure 43... - Page 35 Venting arrangements direct Vent Vertical Vent horizontal intake direct Vent horizontal Vent Vertical intake figure 44 figure 45 direct Vent Vertical concentric direct Vent horizontal concentric figure 46 figure 47...
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Page 36: Termination Clearances Sidewall Power Vent
termination clearances sidewall power Vent POWER VENT (using room air for combustion) EXTERIOR CLEARANCES FOR SIDEWALL VENT TERMINATION F IX E D C L O S E D O P E R A B L F IX E D C L O S E D O P E R A B L VENT TERMINAL AIR SUPPLY INLET... -
Page 37: Termination Clearances Sidewall Direct Vent
termination clearances sidewall direct Vent DIRECT VENT (using outdoor air for combustion) EXTERIOR CLEARANCES FOR SIDEWALL VENT TERMINATION F IX E D C L O S E D O P E R A B L F IX E D C L O S E D O P E R A B L VENT TERMINAL AIR SUPPLY INLET... -
Page 38: Water Heater Installation
water heater installation condensate drain installation than 1/2 inch PVC in size. 3. do not remove, modify or alter the factory condensate trap. Installation must conform with these instructions and local building codes. installation instructions 1. Ensure the water heater’s on/off switch is in the “off” position. Field supplied materials required for installation include: 2. -
Page 39: Supply Gas Line Installation
supply gas line installation gas line siZing Depending on the developed equivalent length and/or the number Contact your local gas utility company to ensure that adequate of appliances connected to a common main, the size of supply gas gas service is available and to review applicable installation lines may have to be increased. -
Page 40: Gas Line Leak Testing
gas line connection 4. Use only a smooth jaw adjustable wrench (such as a monkey wrench) as a back up on the body of the 24 Volt Gas Valve 1. The water heaters covered by this manual are shipped when tightening the first pipe nipple into the body of the valve. from the factory with 3/4 inch supply gas connections. -
Page 41: Electrical Wiring
electrical wiring (IE: relay coil) to this circuit. This will damage the CCB and is not covered under the limited warranty. All electrical work must be installed in accordance with the connecting an external supervisory control National Electrical Code, ANSI/NFPA 70 or the Canadian The enable/disable circuit is accessed from the CCB’s J6 plug Electrical Code, CSA C22.1 and local requirements. -
Page 42: Water Line Connections
water line connections t&p ValVe discharge pipe The water piping installation must conform to these instructions and to all local and national code authority having jurisdiction. Good practice requires that all heavy piping be supported. read and observe all requirements in the following sections Explosion Hazard before installation of the water piping begins: 1. -
Page 43: Temperature Regulation
temperature regulation high temperature limit control (eco) Setting the Operating Set Point at 120°F (49°C) will reduce the risk of scalds. Some States require settings at specific lower This water heater is equipped with an ECO (energy cut out) non temperatures. -
Page 44: Control System Operation
control system operation oVerView or cancel new user settings. The operational buttons are multifunctional, their current function is defined by the text The water heaters covered in this manual are equipped with an that appears directly above each button on the LCD screen. electronic control system that regulates water temperature inside the desktop screen the storage tank. -
Page 45: Status Icons
status icons The Status Icons are displayed on the Desktop screen and convey operational and diagnostic information. The icons are described in the table below. See Figure 56 on page 44 and the Sequence Of Operation on page 58. taBle 11 icon description Water temperature in the tank has fallen. -
Page 46: Operating States
operating states The current operational state of the water heater is displayed on the Desktop screen as the "Status." The common operational states are described in the table below. See Figure 56 on page 44 and the Sequence Of Operation on page 58. taBle 12 state description... -
Page 47: User Settings & Control System Menus
user settings & control system menus temperatures menu operating set point and differential adjustment The Operating Set Point is adjustable from 90°F (42°C) to 180°F (82°C). The factory setting is 120°F (49°C). The Differential is adjustable from 2° to 20°. The factory setting is 8°. These user settings are accessed from the Temperatures menu. The following instructions will explain how to adjust these settings and navigate the control system menus. -
Page 48: Heater Status Menu
temperatures menu (cont) description/action display • tank temperature - non adjustable - control system Top of menu sensed temperature (averaged from upper and lower Temperatures temperature probes). Operating Set Point 140°F • upper temperature - non adjustable - control system Differential 8°F sensed temperature from the Upper Temperature Probe. -
Page 49: Display Settings
display settings description/action display Select Display Settings from the main menu and press the Display Settings Operational Button under "SELECT" to enter this menu. This Temperature Units °F menu contains adjustable display options for viewing information on the UIm’s LCD screen. Use the Up & Down Buttons to Backlight Delay navigate the menu. -
Page 50: Current Fault
current fault description/action display Select Current Fault from the main menu and press the Operational Button under "SELECT" to enter this menu. This menu contains non adjustable operational information. Use the Blocked Exhaust Up & Down Buttons to navigate the menu. Fault occurred 2 mins ago This menu contains the current Fault or Alert error message. -
Page 51: Service Contact Information
serVice contact information The control system has a discrete menu that Installing contractors and/or service agents can access to enter contact information for their customers. This contact information will be displayed with all Fault and Alert messages. description/action display From the Desktop Screen (see Figure 56 on page 44) press and Service Contact Information hold down the middle (unmarked) Operational Button for 30 seconds and then release it. -
Page 52: Start Up
start up prior to start up 2. Purge all air from the supply gas line up to the water heater’s main Gas Shutoff Valve. Installation and start up of this water heater requires abilities 3. When all air has been purged from the supply gas line, and skills equivalent to that of a licensed tradesman in the field tighten all supply gas line connections. - Page 53 lighting the water heater 8. Compare the actual supply gas pressure reading recorded above to the required minimum/maximum values given 1. BTH 120 & 150 models: turn the on/off switch on the gas in Table 3 on page 12. Adjust supply gas pressure valve to the "on"...
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Page 54: Supply Gas Pressure Adjustment
supply gas pressure adjustment Breathing Hazard - Carbon Monoxide Gas Fire and Explosion Hazard Under no circumstances should Do not use water heater with any gas the input exceed the rate shown other than the gas shown on the rating label. -
Page 55: Checking The Firing Rate
checking the firing rate high altitude installations If firing rate adjustment is required follow these instructions to determine the actual firing rate of the water heater: 1. Ensure there are no other gas fired appliances connected to Fire and Explosion Hazard the gas meter firing during this test. -
Page 56: Lighting The Water Heater
lighting the water heater lighting & operation laBels The instruction label below is affixed to the water heater's covered by this manual at the factory and must be followed when lighting and operating the water heater. Bth 120 and 150 models only FOR YOUR SAFETY READ BEFORE OPERATING IF YOU DO NOT FOLLOW THESE INSTRUCTIONS EXACTLY A FIRE OR EXPLOSION WARNING... -
Page 57: For Your Safety Read Before Operating
lighting the water heater lighting & operation laBels The instruction label below is affixed to the water heater's covered by this manual at the factory and must be followed when lighting and operating the water heater. Bth 199 and 250 models only FOR YOUR SAFETY READ BEFORE OPERATING IF YOU DO NOT FOLLOW THESE INSTRUCTIONS EXACTLY A FIRE OR EXPLOSION WARNING... -
Page 58: Troubleshooting
trouBleshooting seQuence of operation installation checklist The list below represents some of the most critical installation read the Sequence of Operation below before attempting to requirements that, when overlooked, often result in operational correct any operational problems. refer to the Features And problems, down time and needless parts replacement. -
Page 59: Sequence Of Operation Flow Chart
seQuence of operation flow chart If tank temperature drops below Operating Set Point minus Differential setting a heating cycle is activated Control System performs diagnostic checks Normal State of all pressure switches and ECO are checked Control System Locks Out Blower Prover pressure switch verified open Displays Fault Msg All other pressure switches and ECO are verified closed... -
Page 60: Operational Problems
operational proBlems • Excessive manifold gas pressure - see Table 3 on page 12 and manifold Gas Pressure Adjustment on page 54. • Vent (exhaust) gas recirculation at the vent and intake air pipe terminations on Direct Vent installations - see Direct Vent Installation on page 25. -
Page 61: Fault And Alert Conditions
• Colder incoming water temperature lengthening the time alert conditions required to heat water to desired temperature. When the control system declares an Alert condition it will display • Hot water piping leaks, open faucets, water heater drain an Alert message on the control system's LCD with a question "?" valve leaking or open. -
Page 62: Fault And Alert Messages
fault and alert messages Call the technical support phone number listed on the back cover for further technical assistance or to locate a qualified service agent in your area. possiBle causes - check/repair displayed fault/alert message • The water heater’s control system is polarity sensitive and will lock AC Reversed out and disable heating operation if the polarity of the power supply is reversed. -
Page 63: Blower Prover Open
fault and alert messages (cont) Call the technical support phone number listed on the back cover for further technical assistance or to locate a qualified service agent in your area. possiBle causes - check/repair displayed fault/alert message • The control system has detected the Blower Prover Switch Blower Prover Failure contacts are closed when they should be open at the beginning of a heating cycle - see the Sequence Of Operation on page 58. -
Page 64: Maintenance
maintenance general maintenance schedule Keep water heater area clear and free from combustible taBle 14 materials, gasoline and other flammable vapors and liquids. See component operation interVal reQuired Locating The Water Heater on page 12. Sediment Tank Semi Annually Flushing removal Water heater maintenance includes periodic tank flushing and Lime Scale... -
Page 65: Filling The Water Heater
5. Ensure the drain hose is secured before and during the entire flushing procedure. Flushing is performed with system water CLEANOUT pressure applied to the water heater. TANK ACCESS PANEL 6. Open the water heater drain valve to flush the storage tank. CLEANOUT CLEANOUT OPENING... -
Page 66: Powered Anode Rods
taBle 15 TEMPERATURE-PRESSURE un-lime® professional delimer RELIEF VALVE part number description 9005416105 4 - 1 gallon (case) 9005417105 1 - 5 gallon powered anode rods To insure a long, trouble-free operating life, the water heaters DISCHARGE PIPE covered in this manual are factory equipped with a powered anode system. -
Page 67: Diagrams
diagrams ccB - central control Board layout CCB (CENTRAL CONTROL BOARD) 1 Retry Retries Input Type Tstat Vent Spare Spare S1 DIPSWITCH S1 DIPSWITCH DETAIL 1 Retry Retries Input Type Tstat Vent Spare Spare Dipswitch Operation: Along one side of the dipswitch array there are numbers, 1-4. On the other side of the dipswitch is the word “OPEN.”... -
Page 68: Bth 120 & 150 Wiring Diagram
Bth 120 & 150 wiring diagram LOW GAS 24 VAC BLOCKED BLOCKED BLOWER PRESSURE SWITCH GAS VALVE AIR INTAKE PROVER EXHAUST ENABLE/DISABLE CIRCUIT JUMPER WIRE BETWEEN PINS 8 AND 11 ON J6 PLUG HOT SURFACE IGNITER 1 BLACK 2 WHITE FLAME SENSOR 1 RED (ECO) 2 BLACK... -
Page 69: Bth 199 & 250 Wiring Diagram
Bth 199 & 250 wiring diagram LOW GAS 24 VAC BLOCKED BLOWER BLOCKED PRESSURE SWITCH GAS VALVE AIR INTAKE EXHAUST PROVER ENABLE/DISABLE CIRCUIT JUMPER WIRE BETWEEN PINS 8 AND 11 ON J6 PLUG HOT SURFACE IGNITER 1 BLACK 2 WHITE FLAME SENSOR 1 RED (ECO) 2 BLACK... -
Page 70: Circulation Pump Wiring Diagrams
circulation pump wiring diagrams CIRCULATING PUMP WIRING DIAGRAM STORAGE TANK OR BUILDING RECIRCULATION FIELD SUPPLIED TEMPERATURE CONTROL INSTALLED IN THE STORAGE TANK OR CIRCULATING LOOP RETURN LINE NOTE: USE SEPARATE 120 VAC POWER SUPPLY FOR PUMP CIRCUIT. DO NOT SHARE POWER WITH WATER HEATER AS THIS MAY CAUSE ELECTRICAL LINE NOISE AND LEAD TO ERRATIC CONTROL SYSTEM OPERATION. - Page 73 STORAGE TANK...
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Page 78: Limited Warranty
limited warranty A. O. Smith Corporation, the warrantor, extends the following LImITED WArrANTy to the owner of this water heater. 1. THE TaNk If the glass-lined tank in this water heater shall prove upon examination by the warrantor to have leaked due to natural corrosion from potable water therein, during the first THrEE years after initial installation, the warrantor will supply a replacement tank less burner and controls or a complete new A. - Page 80 500 Tennessee Waltz Parkway Ashland City, TN 37015 www.hotwater.com...
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