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

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Figure 26
Temperature and Pressure Relief Valve
Manual Relief
Valve
Discharge line to drain

MAINTENANCE OF YOUR WATER HEATER

Draining and Flushing

It is recommended that the tank be drained and flushed every 6 months to remove sediment which may build up during operation. The water heater should be drained if being shut down during freezing temperatures. To drain the tank, perform the following steps:

1.Turn off the gas to the water heater at the manual gas shut-off valve.

1.Move the switch on the gas control valve/thermostat to the “OFF” position to turn off the water heater.

2.Open a nearby hot water faucet until the water is no longer hot.

3.Close the cold water inlet valve.

4.Connect a hose to the drain valve and terminate it to an adequate drain or external to the building.

5.Open the water heater drain valve and allow all of the water to drain from the tank. Flush the tank with water as needed to remove sediment.

6.Close the drain valve, refill the tank, and restart the heater as directed in this manual.

If the water heater is going to be shut down for an extended period, the drain valve should be left open.

IMPORTANT: Condensation may occur when refilling the tank and should not be confused with a tank leak.

Routine Preventative

Maintenance

At least annually, a visual inspection should be made of the venting and air supply system, piping systems, main burner, pilot burner, and Flame-trap. Check the water heater for the following:

Obstructions, damage, or deterioration in the venting system. Make sure the ventilation and combustion air supplies are not obstructed.

Build up of soot and carbon on the main burner and pilot burner. Check for a soft blue flame.

Leaking or damaged water and gas piping.

Presence of flammable or corrosive materials in the installation area.

Presence of combustible materials near the water heater.

After servicing this water heater, check to make sure it is working properly. (See Operating Your Water Heater section of this manual.)

IMPORTANT: If you lack the necessary skills required to properly perform this visual inspection, you should not proceed, but get help from a qualified person.

Temperature and Pressure Relief Valve

WARNING

Explosion Hazard

If the temperature and pressure relief valve is dripping or leaking, have a qualified person replace it.

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

Do not plug valve. Do not remove valve.

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

Manually operate the temperature and pressure relief valve at least once a year to make sure it is working

properly. To prevent

water damage,

the valve must be properly connected

to a discharge line which terminates

at an adequate

drain. Standing clear of the outlet (discharged water may be hot), slowly lift and release the lever handle on the temperature and pressure relief valve to allow the valve to operate freely and return to its closed position. If the valve fails to completely reset and continues to release water, immediately shut off the manual gas control valve and the cold water inlet valve and call a qualified person.

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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 Pressure Gas SupplyGas Requirements Combustion Air Supply and Ventilation All Air from Inside the Building Unconfined SpaceConfined Space 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 ValveCombination Space Heating/Potable Water System Solar InstallationSpecial Applications 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