American Water Heater Residential Gas Water Heater with the Flame Guard Safety System, 319407-002

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BTU/HR.

Combustion Air Supply and Ventilation

WARNING

Carbon Monoxide Hazard Water heater must be vented to outdoors.

Vent must be installed by a qualified person using the installation instructions.

Examples of a qualified person include: gas technicians,

authorized gas company personnel, and authorized service persons.

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

IMPORTANT: Air for combustion and ventilation must not come from a corrosive atmosphere. Any failure due to corrosive elements in the atmosphere is excluded from warranty coverage.

The following types of installation (not limited to the following) will require outdoor air for combustion due to chemical exposure and may reduce but not eliminate the presence of corrosive chemicals in the air:

•beauty shops

•photo processing labs

•buildings with indoor pools

•water heaters installed in laundry, hobby, or craft rooms

•water heaters installed near chemical storage areas

Combustion air must be free of acid-forming chemicals such as sulfur, fluorine, and chlorine. These elements are found in aerosol sprays, detergents, bleaches, cleaning solvents, air fresheners, paint, and varnish removers, refrigerants, and many other commercial and household products. When burned, vapors from these products form highly corrosive acid compounds. These products should not be stored or used near the water heater or air inlet.

Combustion and ventilation air requirements are determined by the location of the water heater. The water heater may be located in either an open (unconfined) area or in a confined area or small enclosure such as a closet or small room. Confined spaces are areas with less than 50 cubic feet for each 1,000 BTU/HR of the total input for all gas-using appliances.

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Contents Flammable Vapor Ignition Resistant What to do if YOU Smell GASWater Heater Safety Unpacking the Water Heater Important Information About This Water HeaterConsumer Information Consumer ResponsibilitiesSite Location Location RequirementsInspection and service Clearances and AccessibilityGas Requirements Gas SupplyGas Pressure Combustion Air Supply and Ventilation Confined Space Unconfined SpaceAll Air from Inside the Building Louvers and Grilles All Air from OutdoorsVent Pipe Size Draft Hood InstallationVent Connectors Vent Pipe SystemVertical Exhaust Gas Vent Chimney ConnectionWater System Piping Piping InstallationClosed System/Thermal Expansion Relief Valve and Pipe Insulation Some Models Temperature and Pressure Relief ValveSpecial Applications Solar InstallationCombination Space Heating/Potable Water System Installation Checklist Explosion Hazard Lighting InstructionsBurner Flames Water Temperature StackingG. Bottled Propane Models Checking the Draft154 Instantaneous Second Water Temperature RegulationElectrical Connections Wiring DiagramStatus Light Code Operating the Temperature Control SystemWater Temperature Adjustment Operating Modes and SettingsOperational Conditions Draining and Flushing Routine Preventative MaintenanceReplacing the Pilot/Igniter Flame Sensor Assembly Replacement PartsRemoving the Burner from the Manifold Assembly Removing the Manifold AssemblyFilter Installation and Cleaning Cleaning the Combustion Chamber and Flame-trap External Inspection & Cleaning of the Flame-trapIgniter System Replacing the Manifold AssemblyRemoving and Replacing the Gas Control Valve/Thermostat Flame Guard Safety System Operational ChecklistBurner Flame Yellow Status Light Code Troubleshooting Table Status Light Code Troubleshooting Table Sequence of Operation Chart Repair Parts List Repair Parts IllustrationListed Parts Kits and Illustrations
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