A.O. Smith GAHH-50, GAHH-40, 315456-002 installation instructions Gas Pipe Capacity Table

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Gas Pipe Capacity Table

WARNING

Explosion Hazard

Use a new CSA approved gas supply line.

Install a shut-off valve.

Do not connect a natural gas water heater to an L.P. gas supply.

Do not connect an L.P. gas water heater to a natural gas supply.

Failure to follow these instructions can result in death, explosion, or carbon monoxide poisoning.

WARNING

Explosion Hazard

Gas leaks can not always be detected by smell.

Gas suppliers recommend that you use a gas detector approved by UL or CSA.

For more information, contact your gas supplier.

If a gas leak is detected, follow the “What to do if you smell gas” instructions on the cover of this manual.

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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 InformationSite Location Location RequirementsCarbon Monoxide Poisoning Hazard Clearances and Accessibility State of CaliforniaGas Requirements Gas Pressure TestingGAS Supply Gas PipingGas Pipe Capacity Table Confined Space Combustion AIR & VentilationUnconfined Space Minimum Btuh InputAll Air from Outdoors All Air from Inside the BuildingLouvers and Grilles 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 LineWiring Diagram Solar InstallationElectrical Connections Installation Checklist Important Information about this Water HeaterOperating Your Water Heater Operating InstructionsChecking the Draft Water Heater OperationBurn Hazard Burner Flames Water Temperature RegulationEmergency Shut Down Condensation Safety Shut-offOperational Conditions Water Heater SoundsPowered Anode Operation Routine Preventive MaintenanceDraining and Flushing Removing the Manifold/Burner Assembly Maintenance of Your Water HeaterReplacement Parts Removing the Burner from the Manifold/ Burner AssemblyCleaning the Combustion Chamber and Air Diverter Assembly Replacing the Flame Sense/Hot Surface igniter AssemblyReplacing the Manifold/Burner Assembly Removing the Gas Control Valve/Thermostat Removing and Replacing the Gas Control Valve/ThermostatReplacing the Gas Valve 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