Preventive Maintenance, Deliming Solvents

PREVENTIVE MAINTENANCE

RECOMMENDED PROCEDURE FOR PERIODIC REMOVAL OF LIME DEPOSITS FROM TANK TYPE COMMERCIAL WATER HEATERS

The amount of calcium carbonate (lime) released from water is in direct proportion to water temperature and usage, see chart. 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 time between cleaning will vary from weeks to months depending upon water conditions and usage.

Refer to A. O. Smith booklet, Form No. 4800, entitled “Why? When and How” for detailed description on tank inspection and cleanout.

UN•LIME® and the booklet may be obtained through your A. O. Smith dealer or distributor.

DELIMING SOLVENTS

A. O. Smith recommends the use of UN•LIME for deliming. UN•LIME is a patented food grade acid which is safe to handle and does not create the harmful fumes which are associated with other products.

UN•LIME may be obtained from your dealer, distributor or the A. O. Smith Product Service Division. Order part no. 4763 (1 gal), packed 4 gallons per case or part no. 4813 (5 gallon container).

Hydrochloric base acids are not recommended for use on glass- lined tanks.

CAUTION

Observe handling instructions on label of product being used.

TANK CLEANOUT PROCEDURE

The following practices will ensure longer life and enable the unit to operate at its designed efficiency:

1.Once a month the heater should be flushed. Open the drain valve and allow two gallons of water to drain from the heater. Inlet water valve should remain open to maintain pressure in tank.

2.A cleanout opening is provided for periodic cleaning of the tank. Gas must be shut off and heater drained before opening cleanout.

To clean heater through cleanout opening, proceed as follows:

1.Drain heater.

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

3.Remove six (6) hex head screws securing tank cleanout plate and remove plate.

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

5.Inspect cleanout plate gasket, if new gasket is required, see replacement parts list for item number.

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

7.Replace outer jacket cover plate.

FIGURE 9

In some water areas the sediment might not be removed by this method and may result in the water heater making rumbling or boiling noises. To dissolve and remove these more stubborn mineral deposits, A. O. Smith UN•LIME Professional Delimer should be used.

BT- 80 specifications

A.O. Smith BT-80 is a notable model in the realm of water heater technology, representing a confluence of efficiency, durability, and advanced engineering. As an industry leader, A.O. Smith has designed this model with the end-user in mind, focusing on delivering a reliable and long-lasting water heating solution suitable for residential and light commercial applications.

One of the standout features of the BT-80 is its impressive 80-gallon capacity, which makes it ideal for households with high hot water demands. Whether it's for daily showers, laundry, or dishwashing, this water heater can accommodate the needs of larger families or homes that require a consistent supply of hot water throughout the day.

The BT-80 utilizes a high-efficiency burner that maximizes energy use, ensuring that less fuel is consumed while providing consistent heating performance. This feature not only reduces utility costs for the homeowner but also reinforces A.O. Smith's commitment to environmentally friendly solutions. Additionally, the water heater is equipped with an insulated tank that minimizes heat loss, further improving its efficiency.

Safety and reliability are key characteristics of the BT-80. It comes with advanced safety features, including a pressure relief valve that prevents excess pressure build-up, ensuring safe operation at all times. The product is also designed for easy maintenance, with accessibility features that allow users or technicians to perform routine checks and repairs conveniently.

This model incorporates cutting-edge technology such as the company's Blue Diamond® glass coating, which provides superior corrosion resistance. This protective feature extends the lifespan of the tank, making it an excellent investment for homeowners.

Moreover, the BT-80 is built to meet stringent industry standards, ensuring it not only performs well but also complies with local codes. Its robust construction means it can withstand various water conditions while maintaining efficiency.

In summary, the A.O. Smith BT-80 is an exemplary water heating solution characterized by its large capacity, energy-efficient operation, advanced safety features, and durable design. It is an ideal choice for customers seeking a reliable and efficient way to meet their hot water needs. With A.O. Smith's reputable engineering and commitment to quality, the BT-80 is a worthy consideration for anyone in the market for a new water heater.