A.O. Smith 315456-002, GAHH-40, GAHH-50 installation instructions

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Contents Residential GAS Water Heaters Table of Contents Safe INSTALLATION, USE and Service Safety PrecautionsFire or Explosion Hazard Typical Installation GET to Know Your Water Heater GAS ModelsImportant Information About This Water Heater Installing Your GAS Water HeaterUnpacking the Water Heater Excessive Weight Hazard Consumer InformationCarbon Monoxide Poisoning Hazard Location RequirementsSite Location Clearances and Accessibility State of CaliforniaGas Requirements Gas Pressure TestingGAS Supply Gas PipingGas Pipe Capacity Table Confined Space Combustion AIR & VentilationUnconfined Space Minimum Btuh InputLouvers and Grilles All Air from Inside the BuildingAll Air from Outdoors Draft Hood Installation Vent Pipe SystemChimney Connection Vent ConnectorsVent Pipe Size Vertical Exhaust Gas VentPiping Installation Water System PipingTemperature and Pressure Relief Valve Closed System/Thermal ExpansionCombination Space Heating/Potable Water System Temperature & Pressure Relief ValveRelief Valve and Pipe Insulation Discharge LineElectrical Connections Solar InstallationWiring Diagram Installation Checklist Important Information about this Water HeaterOperating Your Water Heater Operating InstructionsBurn Hazard Water Heater OperationChecking the Draft Emergency Shut Down Water Temperature RegulationBurner Flames Condensation Safety Shut-offOperational Conditions Water Heater SoundsDraining and Flushing Routine Preventive MaintenancePowered Anode Operation Removing the Manifold/Burner Assembly Maintenance of Your Water HeaterReplacement Parts Removing the Burner from the Manifold/ Burner AssemblyReplacing the Manifold/Burner Assembly Replacing the Flame Sense/Hot Surface igniter AssemblyCleaning the Combustion Chamber and Air Diverter Assembly Replacing the Gas Valve Removing and Replacing the Gas Control Valve/ThermostatRemoving the Gas Control Valve/Thermostat Pressurized Combustion Chamber System Operational Checklist Troubleshooting ChartCont Control Display Troubleshooting Control Display Status Problem SolutionControl Display Status Problem Solution FV-SENSE and Open Flashing Troubleshooting Flowchart YESRepair Parts List Repair Parts IllustrationListed Parts Kits and Illustrations Page Page Page Limited Residential GAS Warranty YearImportant Information