A.O. Smith 110 Series Instruction Manual
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A.O. Smith 110 Series Instruction Manual

Commercial gas water heaters
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500 Tennessee Waltz Parkway
Ashland City, TN 37015
ALL TECHNICAL AND WARRANTY QUESTIONS: SHOULD BE DIRECTED TO THE LOCAL DEALER FROM WHOM THE WATER HEATER WAS
PURCHASED. IF YOU ARE UNSUCCESSFUL, PLEASE WRITE TO THE COMPANY LISTED ON THE RATING PLATE ON THE WATER HEATER.
PRINTED 0315
COMMERCIAL GAS WATER HEATERS
LOW LEAD
CONTENT
KEEP THIS MANUAL IN THE POCKET ON HEATER FOR FUTURE REFERENCE
WHENEVER MAINTENANCE ADJUSTMENT OR SERVICE IS REQUIRED.
POWER VENTED GAS MODELS W/HOT SURFACE IGNITION
MODEL BTX-80 SERIES 110
•
For Your Safety
AN ODORANT IS ADDED TO THE GAS USED
BY THIS WATER HEATER.
1
Instruction Manual
•
332007-000

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Summary of Contents for A.O. Smith 110 Series

  • Page 1 Instruction Manual COMMERCIAL GAS WATER HEATERS POWER VENTED GAS MODELS W/HOT SURFACE IGNITION MODEL BTX-80 SERIES 110 500 Tennessee Waltz Parkway Ashland City, TN 37015 LOW LEAD CONTENT • • For Your Safety AN ODORANT IS ADDED TO THE GAS USED BY THIS WATER HEATER.

  • Page 2: 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 3: General Safety Information

    GENERAL SAFETY INFORMATION Fire Hazard For continued protection against risk of f ire: • Do not install water heater on carpeted floor. • Do not operate water heater if any part has been exposed to flooding or water damage.
  • Page 4 GENERAL SAFETY INFORMATION CAUTION Improper installation, use and service may result in property damage. • Do not operate water heater if any part has been exposed to flooding or water damage. • Inspect anode rods regularly, replace if damaged. • Install in location with drainage.

  • Page 5: Table Of Contents

    TABLE OF CONTENTS SAFE INSTALLATION, USE AND SERVICE........2 Vent Pipe Assembly ..............19 APPROVALS ..................2 Venting ..................19 GENERAL SAFETY INFORMATION ..........3-4 Vent Pipe Termination ..............20 TABLE OF CONTENTS ................ 5 Planning the Vent System ............21 INTRODUCTION ..................

  • Page 6: Installation Requirements For The Commonwealth Of Massachusetts

    INSTALLATION REQUIREMENTS FOR THE 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 monoxide every dwelling, building or structure used in whole or in part for...

  • Page 7: Typical Installation

    TYPICAL INSTALLATION GET TO KNOW YOUR WATER HEATER - GAS MODELS Bushing A Vent Pipe Q Rating Plate Nipple B Anode R Insulation Condensate Tee C Hot Water Outlet Vent Terminal Adapter D Outlet (120 VAC) Drain Valve LL Plug F Gas Supply Igniter And Main Burner Vent Pipe Assembly #1...
  • Page 8 TYPICAL INSTALLATION CONDENSATE HOSE AND DRAIN PAN FIGURE 1 (continued).
  • Page 9 TYPICAL INSTALLATION MIXING VALVE / THERMAL EXPANSION TANK USAGE AND SPACE HEATING FIGURE 2. MIXING VALVES TABLE 1. Time for 1st Degree Time for Permanent Burns Water Burn 2nd & 3rd Degree DANGER Temperature °F Water temperature over 125°F (52°C) (Less Severe Burns (Most Severe Burns) can cause severe burns instantly...

  • Page 10: Rough In Dimensions

    ROUGH-IN-DIMENSIONS Rough-In-Dimensions Model Units Inches 71.12 68.70 51.90 20.90 9.15 12.00 22.00 8.00 15.81 26.92 BTX-80 180.64 174.50 131.83 53.09 23.24 40.48 55.88 20.32 40.16 68.38 Top/Side Inlet and Outlet: 3/4″ NPT Gas Inlet: 1/2″ NPT Capacity and Gas and Electrical Characteristics All models - Maximum Supply Pressure: 14 inches W.C.

  • Page 11: Locating The New Water Heater

    LOCATING THE NEW WATER HEATER FACTS TO CONSIDER ABOUT THE LOCATION Carefully choose an indoor location for the new water heater, because the placement is a very important consideration for the safety of the occupants in the building and for the most economical use of the appliance.

  • Page 12: Insulation Blankets

    in an alcove or closet, the entire floor must be covered by the panel. If this water heater will be used in beauty shops, barber shops, cleaning establishments, or self-service laundries with dry cleaning Failure to heed this warning may result in a fire hazard. equipment, it is imperative that the water heater or water heaters be installed so that combustion and ventilation air be taken from outside these areas.

  • Page 13: Unconfined Space

    Such a condition often will result in a yellow, luminous burner free area and metal louvers and grilles will have 75% free area. Non flame, causing sooting of the combustion chamber, burners and motorized louvers and grilles shall be fixed in the open position. flue tubes and creates a risk of asphyxiation.

  • Page 14: Outdoor Air Through Horizontal And Vertical Ducts

    Figure 7. The water heater shall have clearances of at least 1 inch The confined space shall be provided with two permanent vertical (25 mm) from the sides and back and 6 inches (150 mm) from the ducts, one commencing within 12 inches (300 mm) of the top and front of the appliance.

  • Page 15: Installing The New Water Heater

    INSTALLING THE NEW WATER HEATER CHEMICAL VAPOR CORROSION This water heater should not be connected to any heating systems or component(s) used with a non-potable water heating appliance. CORROSION OF THE FLUEWAYS AND VENT SYSTEM MAY All piping components connected to this unit for space heating OCCUR IF AIR FOR COMBUSTION CONTAINS CERTAIN CHEMICAL applications should be suitable for use with potable water.

  • Page 16: Thermal Expansion

    THERMAL EXPANSION As water is heated, it expands (thermal expansion). In a closed system the volume of water will grow when it is heated. As the volume of water grows there will be a corresponding increase in water pressure due to thermal expansion.

  • Page 17: High Altitude Installation

    HIGH ALTITUDE INSTALLATION discharge opening must not be blocked or reduced in size under any circumstances. Excessive length, over 30 feet (9.14 m), or use of more than four elbows can cause restriction and reduce the discharge capacity of the valve. No valve or other obstruction is to be placed between the Temperature-Pressure Relief Valve and the tank.

  • Page 18: Sediment Traps

    SEDIMENT TRAPS A gas line of sufficient size must be run to the water heater. Consult the current edition of National Fuel Gas Code (ANSI Z223.1/NFPA 54) or the Natural Gas and Propane Installation Code (CAN/CSA B149.1) and your gas supplier concerning pipe size. There must be: •...

  • Page 19: Vent Pipe Assembly

    Never use this water heater unless it is completely full of water. To the parts and cement back together using the alignment marks. After prevent damage to the tank, the tank must be filled with water. Water the cement dries, attach the assembly to the blower and the water must flow from the hot water faucet before turning “ON”...

  • Page 20: Vent Pipe Termination

    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 21: Planning The Vent System

    PLANNING THE VENT SYSTEM cannot exceed equivalent pipe lengths discussed above where each elbow is equal to 5 feet (1.5 m) of straight pipe (3” vent pipe) or 8 feet (2.4 m) of straight pipe (4” vent pipe). Plan the route of the vent system from the discharge of the blower to the planned location of the vent terminal.

  • Page 22: Polypropylene Installations

    This water heater has been design certified to be vented with PVC the flue connection. The adapter is supplied by the vent manufacturer pipe certified and marked as complying with ULC S636. This water to adapt to its vent system. heater is supplied with a 2 inch 22.5 degree termination elbow that In order to be in full compliance with UL 1738 or ULC-S636 and to is a special fitting that must be used with this appliance.

  • Page 23: Blower Assembly Installation

    The condensate trap may be primed by filling the CONDENSATE 6. Make sure the ON/OFF switch is in the OFF position and that U-ASSEMBLY with tap water while the water heater is not operating. the outer harness is connected from the blower control box to The system is fully primed when the water level reaches the adaptor the connector on the bottom side of the gas valve.
  • Page 24 may be easier to mark both the inside and outside wall. Align holes by bead of caulking (not supplied) around the gap between the pipe and drilling a hole through center of the template from the inside through to cover plate. Apply enough to fill some of the gap between the pipe and wall.

  • Page 25: Installation Of Vent System, Sidewall

    INSTALLATION OF VENT SYSTEM, SIDEWALL additional vent pipe when calculating maximum equivalent feet of venting. With the route of the venting system and selection of materials completed, as discussed in the section of this manual titled PLANNING THE VENT INSTALLATION OF VERTICAL VENT SYSTEM SYSTEM, the through the wall vent terminal in place and the first section of piping, up to first elbow, installed at the blower it is time to complete the A proper flashing or “BOOT”...

  • Page 26: Vent Attenuation Assembly Installation Instructions

    VENT ATTENUATION ASSEMBLY 4. Make sure the VAA and vent pipe is supported securely to a permanent fixture (stud or wall). Use standard support INSTALLATION INSTRUCTIONS straps (not supplied with kit) that may be found at a local hardware store. Failure to properly support the VAA and the The Vent Attenuation Assembly (VAA) is designed to provide a surrounding vent pipe could create a hazardous situation.
  • Page 27 barb, use a wire tie or hose clamp (not supplied with kit) and secure. 6. Take the other end of the flexible tubing and slide it through the hose clamp on the jacket top cover and install it into one of the four barb fittings in vent pipe assembly #2.

  • Page 28: Vent Pipe Preparation

    VENT PIPE PREPARATION PRIMER It is recommended that Tetrahydrofuran (THF) be used to prepare the 1. INITIAL PREPARATION surfaces of pipe and fittings for solvent welding. Do not use water, rags, gasoline or any other substitutes for cleaning PVC or CPVC Make sure the solvent cement you are planning to use is surfaces.
  • Page 29 B. Deburring Use a knife, plastic pipe deburring tool, or file to remove burrs from the end of small diameter pipe. Be sure to remove all burrs from around the inside as well as the outside of the pipe. A slight chamfer (bevel) of about 10°-15°...

  • Page 30: Lighting & Operating Label

    FOR YOUR SAFETY READ BEFORE OPERATING WARNING: If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life. BEFORE OPERATING: ENTIRE SYSTEM MUST BE FILLED WITH WATER AND AIR PURGED FROM ALL LINES. A.

  • Page 31: Temperature Regulation

    TEMPERATURE REGULATION To avoid any unintentional changes in water temperature settings, the It is recommended that lower water temperatures be used to avoid control has a tamper resistant feature for changing the temperature the risk of scalding. It is further recommended, in all cases, that the setting.

  • Page 32: For Your Information

    FOR YOUR INFORMATION START UP CONDITIONS If the smelly water persists after the anode replacement and chlorination treatment, we can only suggest that chlorination or aeration of the water supply be considered to eliminate the water problem. SMOKE/ODOR It is not uncommon to experience a small amount of smoke and odor Do not remove the anode leaving the tank unprotected.

  • Page 33: Periodic Maintenance

    PERIODIC MAINTENANCE VENTING SYSTEM INSPECTION Soot build-up indicates a problem that requires correction before further use. Turn “OFF” gas to water heater and leave off until repairs are made, because failure to correct the cause of the sooting can result in a fire causing death, serious injury, or property damage.

  • Page 34: Temperature-Pressure Relief Valve Test

    The anode rod is used to protect the tank from corrosion. Most hot water tanks are equipped with an anode rod. The submerged rod sacrifices itself to protect the tank. Instead of corroding tank, water ions attack and eat away the anode rod. This does not affect water’s taste or Explosion Hazard color.

  • Page 35: Service

    SERVICE If you are not thoroughly familiar with gas codes, your water heater, and safety practices, contact your gas supplier or qualified installer If a condition persists or you are uncertain about the operation of to check the water heater. the water heater contact a service agency.

  • Page 36: Troubleshooting Guidelines

    TROUBLESHOOTING GUIDELINES TROUBLE SHOOTING Please check guidelines below. For your safety, water heater service should be performed only by a qualified service technician. Read the GENERAL SAFETY INFORMATION section first. INTELLI-VENT TROUBLESHOOTING CHART - USER CONTROL LED STATUS PROBLEM SOLUTION B C D E F Inadequate or no earth ground 1.
  • Page 37 TROUBLESHOOTING GUIDELINES TROUBLE SHOOTING Please check guidelines below. For your safety, water heater service should be performed only by a qualified service technician. Read the GENERAL SAFETY INFORMATION section first. INTELLI-VENT TROUBLESHOOTING CHART - USER CONTROL LED STATUS PROBLEM SOLUTION Ignition/flame failure.
  • Page 38 TROUBLESHOOTING GUIDELINES TROUBLE SHOOTING Please check guidelines below. For your safety, water heater service should be performed only by a qualified service technician. Read the GENERAL SAFETY INFORMATION section first. INTELLI-VENT TROUBLESHOOTING CHART - USER CONTROL LED STATUS PROBLEM SOLUTION B C D E F The self-diagnostic test determined resistance 1.
  • Page 39 TROUBLESHOOTING GUIDELINES TROUBLESHOOTING GUIDELINES These guidelines should be utilized by a qualified service agent.

  • Page 40: Notes

    NOTES...
  • Page 41 NOTES...
  • Page 42 NOTES...

  • Page 43: Limited Warranty

    LIMITED WARRANTY COMMERCIAL WATER HEATER LIMITED WARRANTY EFFECTIVE WHAT'S NOT COVERED For 3 Years, in the event of a tank leak, we will repair or, at our • Problems caused by improper: gas supply line sizing, gas type, discretion, replace the defective water heater. venting, connections, combustion air, voltage, wiring, or fusing For 1 Year, •...
  • Page 44 500 Tennessee Waltz Parkway, Ashland City, TN 37015 Technical Support: 800-527-1953 • Parts: 800-433-2545 • Fax: 800-644-9306 www.hotwater.com Copyright © 2015 A. O. Smith Corporation. All rights reserved.

This manual is also suitable for:

Btx-80

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