American Water Heater 318935-003 Gas Supply, Gas Requirements, Gas Pressure, Gas Piping

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Gas Supply

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.

Gas Requirements

IMPORTANT: Read the data plate to be sure the water heater is made for the type of gas you will be using in your home. This information will be found on the data plate located near the gas control valve/thermostat. If the information does not agree with the type of gas available, do not install or light. Call your dealer.

NOTE: An odorant is added by the gas supplier to the gas used by this water heater. This odorant may fade over an extended period of time. Do not depend upon this odorant as an indication of leaking gas.

Gas Piping

The gas piping 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.

Table 1 on page 7 provides a sizing reference for commonly used gas pipe materials. Consult the “National Fuel Gas Code” for the recommended gas pipe size of other materials.

Refer to Figure 3

NOTE: When installing gas piping, apply approved pipe joint compound.

1.Install a readily accessible manual shut-off valve in the gas supply line as recommended by the local utility. Know the location of this valve and how to turn off the gas to this unit.

2.Install a sediment trap (if not already incorporated as part of the water heater) as shown. The sediment trap must be no less than three inches long for the accumulation of dirt, foreign material, and water droplets.

3.Install a ground joint union between the gas control valve/thermostat and the manual shut-off valve. This is to allow easy removal of the gas control valve/ thermostat.

4.Turn the gas supply on and check for leaks. Test all connections by brushing on an approved noncorrosive leak-detection solution. Bubbles will show a leak. Correct any leak found.

Figure 3

Gas PipingManual Gas

Shut-off Valve

Ground

Joint

Union

Check with local

utility for

minimum height

3” Minimum

Sediment Trap

Gas Pressure

IMPORTANT: The gas supply pressure must not exceed the maximum supply pressure as stated on the water heater’s data plate. The minimum supply pressure is for the purpose of input adjustment.

Gas Pressure Testing

IMPORTANT: This water heater and its gas connection must be leak tested before placing the appliance in operation.

•If the code requires the gas lines to be tested at a pressure exceeding 14” W.C., the water heater and its manual shut- off valve must be disconnected from the gas supply piping system and the line capped.

•If the gas lines are to be tested at a pressure less than 14” W.C., the water heater must be isolated from the gas supply piping system by closing its manual shut-off valve.

U.L. recognized fuel gas and carbon monoxide (CO) detectors are recommended in all applications and should be installed using the manufacturer’s instructions and local codes, rules, or regulations.

NOTE: Air may be present in the gas lines and could prevent the pilot from lighting on initial start-up. The gas lines should be purged of air by a qualified person after installation of the gas piping system. While purging the gas piping system of air, make sure that the fuel is not spilled in the area of the water heater installation, or any source of ignition. If the fuel is spilled while purging the piping system of air follow the “WHAT TO DO IF YOU SMELL GAS” instructions on the cover of this manual.

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Contents What to do if YOU Smell GAS JuneWater Heater Safety Consumer Responsibilities Important Information About This Water HeaterConsumer Information Unpacking the Water HeaterLocation Requirements Site LocationClearances and Accessibility State of CaliforniaGas Requirements Gas Pressure TestingGas Supply Gas PressureCombustion Air Supply and Ventilation Unconfined Space Confined SpaceAll Air from Inside the Building All Air from Outdoors Louvers and GrillesVent Pipe System Draft Hood InstallationVent Connectors Vent Pipe SizeChimney Connection Vertical Exhaust Gas VentPiping Installation Water System PipingClosed System/Thermal Expansion Relief Valve and Pipe Insulation Some Models Temperature and Pressure Relief ValveTemperature & Pressure Relief Valve Discharge LineSolar Installation Special ApplicationsCombination Space Heating/Potable Water System Installation Checklist Lighting Instructions Explosion HazardFor Your Safety Read Before Lighting Burner Flames Water Temperature StackingChecking the Draft Emergency Shut DownWater Temperature Regulation 154 Instantaneous SecondsOperating Modes and Settings Operating the Temperature Control SystemWater Temperature Adjustment Operational ConditionsAnode Rod/Water Odor Routine Preventative Maintenance Draining and FlushingReplacement Parts Removing the Burner Door AssemblyNatural Gas Burner Ultra Low Nox Replacing the Pilot/Thermopile Assembly External Inspection & Cleaning of the Flame-trap Cleaning the Combustion Chamber and Flame-trapReplacing the Burner Door Assembly Testing the Igniter System Piezoelectric Igniter SystemFlame Guard Safety System Operational Checklist Removing and Replacing the Gas Control Valve/ThermostatSlow HOT Water Status Light Code Troubleshooting Chart Pilot Light Troubleshooting Chart Repair Parts List Parts DescriptionListed Parts Kits and Illustrations Page

318935-003 specifications

The American Water Heater 318935-003 stands out as a reliable option for residential and commercial hot water needs. Manufactured by American Water Heater Company, a brand known for its commitment to quality and innovation, this model integrates several advanced features and technologies to enhance efficiency, durability, and user experience.

One of the defining characteristics of the 318935-003 is its impressive efficiency rating. Designed with energy conservation in mind, it employs a highly efficient heating process that significantly reduces energy consumption. This not only helps in lowering utility bills for homeowners and businesses but also contributes to a more sustainable environment. The water heater meets or exceeds Energy Star guidelines, making it an eco-friendly choice.

The technology used in this model includes a state-of-the-art thermostat and advanced insulation material that ensures optimal heat retention. This dual approach minimizes heat loss, ensuring that hot water is readily available when needed while maintaining consistent temperatures. The adjustable thermostat allows users to customize settings to their preferences, thus improving comfort and efficiency.

Additionally, the 318935-003 features a robust design with high-quality materials that enhance its longevity. Its tank is constructed from durable steel, coated with a corrosion-resistant finish, which ensures that it withstands the test of time and minimizes maintenance needs. The unit is also equipped with a comprehensive safety system that includes a temperature and pressure relief valve, safeguarding against potential malfunctions.

The installation process of the American Water Heater 318935-003 is straightforward, making it accessible for both professionals and DIY enthusiasts. It is compatible with various plumbing systems and configurations, offering flexibility in installation locations. Maintenance is also user-friendly, with accessible components that allow for easy upkeep.

In summary, the American Water Heater 318935-003 embodies the ideal blend of efficiency, durability, and advanced technology. Its energy-efficient design, robust construction, and user-friendly features make it a top choice for anyone looking to fulfill their hot water requirements. Whether for a busy household or a commercial establishment, this water heater delivers consistent performance, ensuring a reliable supply of hot water year-round. Investing in the 318935-003 means investing in long-term satisfaction and efficiency, making it a wise addition to any space.
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