A.O. Smith BTX-80 Operation Manual

Commercial gas water heater glass-lined tank-type water heater

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Instruction manual (36 pages)

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Page 1 TROUBLESHOOTING WITH THE LED LIMITED WARRANTY TEXT PRINTED OR OUTLINED IN RED CONTAINS INFORMATION RELATIVE TO YOUR SAFETY. PLEASE READ THOROUGHLY BEFORE INSTALLING AND USING THIS APPLIANCE. A DIVISION OF A.O. SMITH CORPORATION McBEE, SOUTH CAROLINA, U.S.A. www.aosmithwaterheaters.com PAGE 5-16...
Page 2: Rough-In Dimensions
Rough-In-Dimensions Model Units Inches 70.62 68.20 BTX-80 179.37 173.23 Top/Side Inlet and Outlet: 3/4" NPT Gas Inlet: 1/2" NPT Capacity and Gas and Electrical Characteristics Approximate Capacity Model U.S. Gals. BTX-80 All models - Maximum Supply Pressure: 14 inches W.C. (3.48kPa) Minimum Supply Pressure Natural Gas: 5.0 inches W.C.
Page 3: Replacement Parts And Deliming Products
REPLACEMENT PARTS AND DELIMING PRODUCTS Replacement parts and recommended delimer may be ordered through authorized servicers or distributors. When ordering parts, provide complete model and serial numbers (see rating plate), quantity and name of part desired. (See Replacement Parts Insert for list of part numbers and descriptions.) Standard hardware items may be purchased locally.
Page 4: General Safety Information
GENERAL SAFETY INFORMATION EXTERNAL DAMAGE Do not operate the water heater until it has been fully checked out by a qualified technician, if the water heater: • Has been exposed to fire or damage. • Displays evidence of sooting. • Produces steam or unusually hot water. If the water heater has been subject to flooding it must be replaced.
Page 5: Installation
• Do not cover the instruction manual. Keep it on the side of the water heater or nearby for future reference. • Do obtain new warning and instruction labels for placement on the blanket directly over the existing labels. • Do inspect the insulation blanket frequently to make certain it does not sag, thereby obstructing combustion air flow.
Page 6 If the unconfined space is within a building of tight construction (building using the following construction: weather stripping, heavy insulation, caulking, vapor barrier, etc.), air for combustion and ventilation must be obtained from outdoors. The installation instructions for confined spaces must be followed. CONFINED SPACE When drawing combustion air from inside a conventionally constructed building to a confined space, such a space shall be...
Page 7: Connection Of Gas Pipe
WARNING VENT HOOD(S) MAY BE EXTREMELY HOT DURING OPERATION. REFER TO FIG. 1 FOR CONNECTION DETAILS. BEFORE ATTACHING THE GAS LINE BE SURE THAT ALL GAS PIPE IS CLEAN ON THE INSIDE. TO TRAP ANY DIRT OR FOREIGN MATERIAL IN THE GAS SUPPLY LINE, A DIRT LEG (SOMETIMES CALLED DRIP LEG) MUST BE INCORPORATED IN THE PIPING, FIGURE 1.
Page 8: Vent Pipe Assembly
The drain line connected to this valve must not contain a reducing coupling or other restriction and must terminate near a suitable drain to prevent water damage during valve operation. The discharge line shall be installed in a manner to allow complete drainage of both the valve and line.
Page 9: Preparation Of Blower Assembly
joints, including joining the pipe to the Termination (PVC Material). If local codes do not allow the use of the PVC termination when a material other than PVC is used for venting, then an equivalent fitting of that material may be substituted if the screen in the PVC terminal is removed and inserted into the new fitting.
Page 10: Installation Of Vent System
WARNING CONDENSATE ALSO DRAINS FROM TWO LOCATIONS ON THE BLOWER ASSEMBLY AS SHOWN IN FIGURE 5. A CONDENSATE HOSE MUST BE SECURED TO FORM A "TRAP" AS SHOWN IN FIGURE 5 FOR THESE CONDENSATE DRAIN CONNECTIONS. THESE TWO HOSES MAY BE CONNECTED TOGETHER.
Page 11 CAUTION LABEL ALL WIRES PRIOR TO DISCONNECTION WHEN SERVICING CONTROLS. WIRING ERRORS CAN CAUSE IMPROPER AND DANGEROUS OPERATION. VERIFY PROPER OPERATION AFTER SERVICING. POWER VENT WIRING SCHEMATIC - FIGURE 7...
Page 12: Installation Of Vent System, Sidewall
INSTALLATION OF VENT SYSTEM, SIDEWALL With the route of the venting system and selection of materials completed, as discussed in the section of this manual titled PLANNING THE VENT 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 installation of the venting system for the sidewall installation.
Page 13: Vent Attenuation Assembly Installation Instructions
VENT ATTENUATION ASSEMBLY INSTALLATION INSTRUCTIONS The Vent Attenuation Assembly (VAA) is designed to provide a reduction in noise that may be transmitted through the vent pipe. This installation of this VAA is optional. Review directions thoroughly prior to installing the new VAA. Please contact the manufacturer of the water heater as shown in the instruction manual with any questions or for additional product support.
Page 14 8. Take the end of the tube at the bottom of the floor and route it to a suitable drain. This will provide an area where the condensate can drain without affecting the area around the appliance. 9. Once installed along with the rest of the vent configuration, make sure to operate the unit through at least one heat up cycle to ensure there is no leakage around the hose barb or any joints of the VAA or vent pipe system.
Page 15: Selection Of Materials
VENT PIPE PREPARATION 1. INITIAL PREPARATION A. Make sure the solvent cement you are planning to use is designed for the specific application you are attempting. B. Know the physical and chemical characteristics and limitations of the PVC and CPVC piping materials that you are about to use. C.
Page 16: Operation
Depth-of-entry mark Marking the depth of entry is a way to check if the pipe has reached the bottom of the fitting socket in step F. Measure the fitting depth and mark this distance on the pipe O.D. You may want to add several inches to the distance and make a second mark as the primer and cement will most likely destroy your first one.
Page 17: For Your Safety Read Before Lighting
FOR YOUR SAFETY READ BEFORE LIGHTING WARNING: 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. This appliance does not have a pilot. It is equipped with an ignition device which automatically lights the burner.
Page 18: Temperature Regulation
TEMPERATURE REGULATION CAUTION THIS WATER HEATER IS EQUIPPED WITH AN ADJUSTABLE THERMOSTAT TO CONTROL WATER TEMPERATURE. HOT WATER TEMPERATURES REQUIRED FOR AUTOMATIC DISHWASHER AND LAUNDRY USE CAN CAUSE PAINFUL SCALDING WITH POSSIBLE SERIOUS AND PERMANENT INJURY. THE TEMPERATURE AT WHICH INJURY OCCURS VARIES WITH THE PERSON'S AGE AND THE TIME OF EXPOSURE.
Page 19 SERVICE SHOULD BE PERFORMED ONLY BY A QUALIFIED SERVICE TECHNICIAN. READ THE GENERAL SAFETY INFORMATION SECTION FIRST. USERS OF THIS APPLIANCE SHOULD BE AWARE THAT GAS COMPONENTS WEAR OUT OVER A PERIOD OF TIME. THE GAS CARRYING COMPONENTS OF THIS APPLIANCE SHOULD BE INSPECTED FOR PROPER OPERATION PERIODICALLY BY A QUALIFIED SERVICE TECHNICIAN.
Page 20: Extended Non-Use Periods)
• If after working with your dealer or service agent the problem has not been resolved to your satisfaction, please let us know by either writing to us at: A.O. Smith Water Products Company Service Department 500 Tennessee Waltz Parkway Ashland City, TN 37015-1299 or, going to our website at: www.hotwater.com...
Page 21 WARNING: DO NOT BY-PASS ANY CONTROLS TO MAKE HEATER OPERATE. OPERATE ONLY AS WIRED FROM FACTORY. TROUBLESHOOTING For your safety, water heater service should be performed only by a qualified service technician. Read the GENERAL SAFETY INFORMATION section first.
Page 22: Led Status
Water heater may exhibit problems that are unrelated to a malfunction of the water heater itself. The following information and tables may serve to answer your question about a problem that you are having without having to call a service agent. WARNING: DO NOT BY-PASS ANY CONTROLS TO MAKE HEATER OPERATE.
Page 23: Limited Warranty
A. O. Smith Corporation, the warrantor, extends the following LIMITED WARRANTY to the owner of this water heater. 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 complete new A.

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