A.O. Smith BTX-80 SERIES 100 instruction manual

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500 Tennessee Waltz Parkway, Ashland City, TN 37015

Technical Support: 800-527-1953 • Parts: 800-433-2545 • Fax: 800-644-9306

www.hotwater.com

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Contents Power Vented GAS Models W/HOT Surface Ignition Whenever maintenance adjustment or service is requiredPrinted 197086-004Approvals Safe INSTALLATION, USE and ServiceImportant Definitions General Safety Information General Safety Information Table of Contents IntroductionInstallation of Carbon Monoxide Detectors Approved Carbon Monoxide DetectorsSignage ExemptionsReplacement Parts and Deliming Products Typical InstallationElbow Access Door Condensate Hose and Drain PAN Mixing Valves ROUGH-IN-DIMENSIONS Rough-In-DimensionsCapacity and Gas and Electrical Characteristics Recovery capacity based on 90% thermal efficiencyLocating the NEW Water Heater Facts to Consider About the LocationInsulation Blankets Air REQUIREMENTsUnconfined Space Confined SpaceFresh Air Openings For Confined Spaces Outdoor Air Through Two OpeningsOutdoor AIR Through TWO Vertical Ducts Outdoor AIR Through TWO Horizontal DuctsAIR from Other Indoor Spaces Installing the NEW Water Heater Chemical Vapor CorrosionWater Piping Space Heating and Potable Water SystemThermal Expansion Temperature-Pressure Relief ValveValve and Pipe Insulation if supplied Contact qualified installer or service agency High Altitude InstallationGas Piping Filling the Water Heater Sediment TrapsPer square inch 3.5 kPa Vent Pipe Assembly VentingTermination Clearances Sidewall Power Vent Vent Pipe TerminationCondensate Planning the Vent SystemBreathing Hazard Carbon Monoxide Gas Installation of Vent System Blower Assembly InstallationVent Terminal INSTALLATION, Sidewall Power Vent Wiring Schematic Figure Chisel an opening approximately one half inch 1.3 cm largerThan the marked circle Pointed in the correct position, see FigureInstallation of Vent SYSTEM, Sidewall Installation of Vertical Vent SystemVent attenuation assembly Flexible tubing Instruction sheet Vent Attenuation Assembly InstallationVertical VAA Installations Recommended Inch vent Vertical VAA Installations Vent Pipe Preparation Recommended BRUSH* Size for Primer Cement ApplicationsStep B Step EStep F Step GPower Before Servicing Do not try to light the burner by handWhat to do if YOU Smell GAS Do not TRY to Light the Burner by HandTemperature Regulation Temperature Indicators Temperature Adjustment ButtonsDisplay D E FStart UP Conditions For Your InformationOperational Conditions Periodic Maintenance Anode ROD InspectionTemperature-Pressure Relief Valve Test Keep hands clear of drainTo Flush the Water Heater Storage Tank Open the water heater drain valve to flush the storage tankService Leakage CheckpointsTroubleshooting Guidelines Trouble ShootingEnsure the flame sensor is clean use ultra fine steel Turn off power to the water heaterAssembly if damaged or defective Unplug ignitor assembly plug from control. Check resistance Unplug the ignitor assembly plug from the control. Check Resistance of the black resistor wire between pins Assembly .2 If the reading taken is less than 100,000 Check vent temperature limit switch if it is determinedTroubleshooting Guidelines Service and Repair Expenses Claim ProcedureTank ALL Other Parts