FLUSHING

1.Turn off the heater electrical disconnect switch.

2.Open the drain valve and allow water to flow until it runs clean.

3.Close the drain valve when finished flushing.

4.Turn on the heater electrical disconnect switch.

DRAINING

The heater must be drained if it is to be shut down and exposed to freezing temperatures. Maintenance and service procedures may also require draining the heater.

1.Turn off the heater electrical disconnect switch.

2.Close the cold water inlet valve to heater.

3.Open a nearby hot water faucet to vent the system.

4.Open the heater drain valve.

5.If the heater is being drained for an extended shutdown, it is suggested the drain valve be left open during this period.

• Follow FILLING instructions when restoring hot water service.

SEDIMENT REMOVAL

Waterborne impurities consist of the particles of soil and sand which settle out and form a layer of sediment on the bottom of the tank.

For convenience, sediment removal and lime scale removal should be performed at the same time.

LIME SCALE REMOVAL

The amount of calcium carbonate (lime) released from water is in direct proportion to water temperature and usage. The higher the water temperature or water usage, the more lime deposits are dropped out of the water. This is the lime scale which forms in pipes, heaters and on cooking utensils.

Lime accumulation not only reduces the life of the equipment but also reduces efficiency of the heater and increases fuel consumption.

The usage of water softening equipment greatly reduces the hardness of the water. However, this equipment does not always remove all of the hardness (lime). For this reason it is recommended that a regular schedule for deliming be maintained.

The depth of lime buildup should be measured periodically. Heaters will have about 3" (7.6cm) of lime buildup when the level of lime has reached the bottom of the cleanout opening or about 1" (2.5cm) of lime buildup if it has reached the drain valve opening. A schedule for deliming should be set up, based on the amount of time it would take for a 1" (2.5cm) buildup of lime.

Example 1:

Initial inspection shows 1/2" (1.3cm) of lime accumulation. Therefore, the heater can be delimed once a year.

Example 2 :

Initial inspection shows 2" (5cm) of lime accumulation. Therefore, the heater should be delimed every 3 months.

Sediment and lime scale removal may be accomplished through the cleanout opening furnished on the heater, see Figure 25. The heater must be drained, see DRAINING, before removing cleanout cover on tank.

FIGURE 16.

To dissolve and remove the more stubborn mineral deposits, manufacturer's UN•LIME® Professional Delimer should be used.

The manufacturer's UN•LIME® Professional Delimer is an easy to handle patented food grade acid formulated specifically for lime scale removal from all types of water using equipment. Available in 1 gallon (3.8L) (part no. 4763) and 5 gallon (19L) (part no. 4813) sizes. Hydrochloric base acids are not recommended for use on glass-lined tanks.

Form No. 4800, entitled “Why, When and How”, describes tank cleaning methods and materials. UN•LIME and the booklet may be obtained through your company's dealer or distributor.

The cleanout opening is shown in Figure 16. To clean heater through cleanout opening, proceed as follow:

1.Turn off water inlet valve, the heater electrical disconnect switch and open drain valve.

2.Remove outer cover plate from lower side of heater jacket.

3.Remove cover from cleanout opening.

4.Remove lime, scale or sediment using care not to damage the glass-lining.

5.Inspect cleanout plate gasket: If new gasket is required, call toll-free number on jacket for replacement number.

6.Install cleanout plate. Be sure to draw plate up tight by tightening screws securely.

7.Close drain valve, open water inlet line and turn on the power burner electrical disconnect switch.

8.Check for water leakage.

9.Replace outer jacket cover plate.

POWERED ANODE SYSTEM

The AHCG3/HCG360T120 thru AHCG3/HCG3100T250 heaters are factory

equipped with a powered anode system. The anodes are of a permanent design and do not need replacing unless damaged.

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American Water Heater AHCG3/HCG360T120 Flushing, Draining, Sediment Removal, Lime Scale Removal, Powered Anode System
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AHCG3/HCG3100T250, AHCG3/HCG360T120 specifications

The American Water Heater AHCG3/HCG360T120 and AHCG3/HCG3100T250 are innovative models designed to meet the diverse needs of residential and commercial water heating. These state-of-the-art water heaters provide exceptional performance, efficiency, and reliability, making them ideal choices for consumers seeking long-lasting solutions for their hot water needs.

Both models are equipped with a robust design and advanced technology, ensuring effective operation and streamlining maintenance. The AHCG3/HCG360T120 has a capacity of 60 gallons, making it suitable for larger households or commercial applications, while the AHCG3/HCG3100T250 has a higher capacity of 100 gallons, providing ample hot water for multiple simultaneous uses.

One of the standout features of these water heaters is their high energy efficiency. Both models are designed to reduce energy consumption, translating to lower utility bills. The units are equipped with environmentally friendly insulation, which minimizes heat loss and maintains the temperature of the stored water longer. This construction not only conserves energy but also ensures consistent hot water delivery.

Innovative heating technology is another characteristic that sets the AHCG3/HCG series apart. These water heaters employ a combination of reliable heating elements and advanced electronics to provide precise temperature control. This technology ensures that users have access to hot water whenever they need it without significant waiting periods.

The American Water Heater AHCG series also emphasizes ease of use and installation. Each unit features user-friendly controls that allow for easy adjustment of temperatures and settings. The compact design ensures they fit comfortably in various spaces, making installation seamless in basements, utility rooms, or garages.

Durability and reliability are key aspects of these water heaters. Made with high-quality materials, they are designed to withstand the rigors of daily use while adhering to strict industry standards. Their robust construction minimizes the risk of leaks and ensures a long operational lifespan.

In summary, the American Water Heater AHCG3/HCG360T120 and AHCG3/HCG3100T250 models combine advanced technology, energy efficiency, and durability. These features make them excellent investments for anyone seeking a dependable hot water solution for their home or business, providing peace of mind and a reliable supply of hot water.
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