A.O. Smith GAHH-40, GAHH-50, 315456-002 Installing Your GAS Water Heater, Consumer Information

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INSTALLING YOUR GAS WATER HEATER

Important Information About This Water Heater

This gas water heater was manufactured to voluntary safety standards to reduce the likelihood of a flammable vapor ignition incident. New technology used in meeting these standards makes this product more sensitive to installation errors or improper installation environments. Please review the Installation Checklist found at the end of the installation instructions section and make any required installation upgrades or changes.

Consumer Information

This water heater is design-certified by CSA International as a Category I, non-direct vented water heater which takes its combustion air either from the installation area or from air ducted to the unit from the outside.

This water heater must be installed according to all local and state codes or, in the absence of local and state codes, the “National Fuel Gas Code”, ANSI Z223.1(NFPA

54)-current edition. This is available from the following:

CSA America, Inc.

8501 East Pleasant Valley Road Cleveland, OH 44131

National Fire Protection Agency 1 Batterymarch Park

Quincy, MA 02269

Check your phone listings for the local authorities having jurisdiction over your installation.

Consumer Responsibilities

This manual has been prepared to acquaint you with the installation, operation, and maintenance of your gas water heater and provide important safety information in these areas.

Read all of the instructions thoroughly before attempting the installation or operation of this water heater.

Do not discard this manual. You or future users of this water heater will need it for future reference.

Service to the FVIR System should only be performed by a qualified technician.

Examples of a qualified technician include: licensed plumbers, authorized gas company personnel, and authorized service personnel.

IMPORTANT: The manufacturer and seller of this water heater will not be liable for any damages, injuries, or deaths caused by failure to comply with the installation and operating instructions outlined in this manual.

If you lack the necessary skills required to properly install this water heater, or you have difficulty following the instructions, you should not proceed but have a qualified technician perform the installation of this water heater. Massachusetts code requires this water heater to be installed in accordance with Massachusetts Plumbing and Fuel Gas Code 248 CMR Section 2.00 and 5.00.

A rating plate identifying your water heater can be found on the front of your water heater. When referring to your water heater, always have the information listed on the rating plate readily available. Retain your original receipt as proof of purchase.

Unpacking the Water Heater

WARNING

Excessive Weight Hazard

Use two or more people to move and install the water heater. Failure to do so can result in injury (including back injury).

IMPORTANT: Do not remove any permanent instructions, labels, or the data label from either the outside of the water heater or on the inside of water heater panels.

Remove exterior packaging and place installation com- ponents aside.

Inspect all parts for damage prior to installation and start-up.

Completely read all instructions before attempting to assemble and install this product.

After installation, dispose of/recycle all packaging materials.

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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 InformationLocation Requirements Site LocationCarbon 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 Inside the Building All Air from OutdoorsLouvers 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 LineSolar Installation Wiring DiagramElectrical Connections Installation Checklist Important Information about this Water HeaterOperating Your Water Heater Operating InstructionsWater Heater Operation Checking the DraftBurn Hazard Water Temperature Regulation Burner FlamesEmergency Shut Down Condensation Safety Shut-offOperational Conditions Water Heater SoundsRoutine Preventive Maintenance Powered Anode OperationDraining and Flushing Removing the Manifold/Burner Assembly Maintenance of Your Water HeaterReplacement Parts Removing the Burner from the Manifold/ Burner AssemblyReplacing the Flame Sense/Hot Surface igniter Assembly Cleaning the Combustion Chamber and Air Diverter AssemblyReplacing the Manifold/Burner Assembly Removing and Replacing the Gas Control Valve/Thermostat Removing 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