limited warranty. Thermal expansion can also cause intermittent temperature-pressure relief valve operation: water discharged from the valve due to excessive pressure build up. The temperature-pressure relief valve is not intended for the constant relief of thermal expansion. This condition is not covered under the limited warranty.

A properly-sized thermal expansion tank should be installed on all closed systems to control the harmful effects of thermal expansion. Contact a plumbing service agency or your retail supplier regarding the installation of a thermal expansion tank.

NOTE: If using copper tubing, solder tubing to an adapter before attaching the adapter to the water heater connections. Do not solder the water lines directly to the water heater connections. It will harm the dip tube and damage the tank.

SHUT-OFF

VALVE

COLD WATER

TEMPERED

INLET

POTABLE WATER

MIXING VALVE (OPTIONAL)

PIPE INSULATION (RECOMMENDED)

Rear View

FIGURE 16

NOTE: To protect against untimely corrosion of hot and cold water fittings, it is strongly recommended that di-electric unions or couplings be installed on this water heater when connected to copper pipe (see Figure 3 also).

Figures 3 and 16 show the typical attachment of the water piping to the water heater. The water heater is equipped with 3/4” NPT water connections.

HARD WATER

We highly recommend installing water filtering system or a water softener before the water heater system. If you are installing a water filtering system use a 5 micron filter to reduce particles that can potentially cause nuisance shutdown problems and prolong the maintenance of the water heater’s inlet filter. A water softener can affect the life of the anode installed in this water heater. Refer to “Anode Rod Inspection” section in this manual.

Clean the filter on the water inlet as frequently as required by the quality of your local water. Refer to “Cleaning The Inlet Water Filter” section of this manual. One additional filter is supplied with your water heater.

TEMPERATURE-PRESSURE RELIEF VALVE

This heater is provided with a properly certified combination temperature - pressure relief valve by the manufacturer.

The valve is certified by a nationally recognized testing laboratory that maintains periodic inspection of production of listed equipment of materials as meeting the requirements for Relief Valves for Hot Water Supply Systems, ANSI Z21.22 • CSA 4.4, and the code requirements of ASME.

If replaced, the valve must meet the requirements of local codes, but not less than a combination temperature and pressure relief valve certified as indicated in the above paragraph.

The valve must be marked with a maximum set pressure not to exceed the marked hydrostatic working pressure of the water heater (150 psi = 1,035 kPa) and a discharge capacity not less than the water heater Btu/hr input rate as shown on the water heater’s rating plate.

For safe operation of the water heater, the relief valve must not be removed from its designated opening nor plugged.

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American Water Heater 316888-004 warranty Hard Water, TEMPERATURE-PRESSURE Relief Valve
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316888-004 specifications

The American Water Heater 316888-004 is a reliable and efficient choice for homeowners seeking a dependable and effective water heating solution. Designed with a focus on performance and convenience, this water heater provides an impressive array of features that meet the demands of modern living.

One of the standout characteristics of the 316888-004 is its efficient heating technology. The unit employs advanced heating elements that ensure rapid heating of water, reducing wait times for hot water availability. This feature is particularly beneficial for households with high hot water demands, such as those with multiple bathrooms or numerous appliances requiring hot water simultaneously. By delivering hot water quickly, this model enhances user satisfaction and improves overall household efficiency.

In terms of design, the American Water Heater 316888-004 boasts a compact structure, which makes it suitable for various installation environments, including tight spaces. Its durable construction is complemented by high-quality materials, ensuring longevity and reduced maintenance costs. This model is built to withstand the rigors of daily use, providing peace of mind to homeowners regarding its reliability and durability.

Safety is another important aspect of the 316888-004. The unit is equipped with multiple safety features, including a temperature and pressure relief valve, which helps prevent overheating and excessive pressure buildup. Additionally, it accommodates users' needs for energy efficiency, making it an environmentally friendly option. The device is designed to minimize energy consumption, which not only lowers utility bills but also contributes to reducing the household's overall carbon footprint.

Moreover, the 316888-004 is user-friendly, featuring a simple control interface that makes adjusting temperature settings easy. This accessibility allows users to customize their water heating experience according to their personal preferences.

In conclusion, the American Water Heater 316888-004 stands out as a top choice in its category. With its efficient heating technology, durable construction, focus on safety, energy efficiency, and user-friendly features, it meets the diverse needs of contemporary households. For anyone seeking a reliable, high-performance water heater, the 316888-004 is undoubtedly a smart investment, ensuring consistent hot water availability for years to come.
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