A.O. Smith BTI 120 Deliming Solvents, Tank Cleanout Procedure, Deliming Using FLO-JUG Method

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FIGURE15

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 Number 4763, 1 gallon, packed 4 gallons per case or Part Number 4813, 5 gallon container.

NOTE: Un•Lime is not available for use in Canada

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, replace with A. O. Smith part no. 99038.

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

7.Replace outer jacket cover plate.

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.

DELIMING USING FLO-JUG METHOD

UN•LIME in the 5 gallon size is recommended for deliming of the BT-80 100 models. UN•LIME with the necessary hoses and fittings to delime your heater is also available as a kit: Up-N-Down Transfer Kit. Contact your local A.O. Smith dealer, distributor or, A.O. Smith Water Products Company:

Telephone: (800) 433-2545

Fax: (800) 433-2515

Website: www.hotwater.com/parts

Prepare the Water Heater

To delime the water heater using the Flo-Jug method, first prepare the heater for deliming as described in the "Why? When? and How?" booklet, Form No. 4800. Then install the long plastic male adapter fitting into the drain valve opening of the water heater. Use teflon tape and hand tighten only. Do not overtighten.

Prepare the Up-N-Down Transfer Kit

The next step is the preparation on the Up-N-Down Transfer Kit, if you have not already done so:

1.With the 5 gallon Up-N-Down container in the vertical position, unscrew the plastic vent cap in the handle and pierce the plastic membrane over the vent boss under the cap to allow the container to vent.

Note: If your container does not have the vent cap and vent boss, drill a 3/16" hole in the handle. When you have finished deliming you will be able to plug this drilled vent with the stainless steel screw that is supplied with the kit.

2.Remove the container's cap and cut the plastic membrane located in the 3/4" IPT opening in the cap. Take care to not damage the threads.

3.Find the 3/4" male adapter, apply teflon tape to the threaded end and screw it into the 3/4" IPT opening in the cap.

4.Put cap with male adapter back on the container and slide 3/4" hose over end of male adapter and fasten in place using hose clamp provided.

Delime using Flo-Jug Method

5.Slide the hose clamp over end of hose and slide hose over the male adapter in the water heater drain opening and secure in place using hose clamp.

6.Lift container to the "Pour" Position, see Figure 16, being careful to keep the vent in the handle above the liquid level and pour the UN•LIME into the heater.

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Contents Models BTI 120 Thru 400/A Commercial GAS, GLASS-LINED, TANK-TYPE Water HeaterFront View TOP View Back View ROUGH-IN-DIMENSIONS ROUGH-IN-DIMENSIONSGasand Electrical Characteristics Table of Contents ForewordGeneral Safety Information High Altitude Installations FeaturesHigh Limit Switch Electronic Ignition Control Exhaust Inducer Blower AssyCirculating Pump Dishwashing Machine RequirementLeveling ClearancesHard Water AIR RequirementsVenting Multiple Heater ManifoldModel BTI-120 Type B GAS VentModel BTI-154 Model BTI-275 Model BTI-250Model BTI-310 Water Line Connections Water Potable Heating and SpaceGAS Piping System ConnectionsGAS Piping and Dirt LEG Installation GAS Pressure RegulatorGAS Meter Size Natural Gases only Type of GASHeater Wiring Single Unit Wiring Diagram BTI-120 Through 400AInstallation DIAGRAMS-TOP INLET/OUTLET Usage Tube Inlet InstallationGeneral Code RestrictionsVertical Storage Tank and Forced Circulation Horizontal Storage Tank and Forced CirculationPage Installation DIAGRAMS-SIDE INLET/OUTLET Usage Circulating Return Line ConnectionHeater with Mixing Valve and Recirculated Sanitizing Loop TWO PRE-HEATERS with Booster Heater Horizontal Storage Tank Model Dimension a Manifold KitsOperation Sequence of Operation For Your Safety Read Before Operating What to do if YOU Smell GASPreventive Maintenance Water Temperature ControlCheck the Ignitor Assembly Ignitor AssemblyRemote Storage Tank Temperature Control GAS ValvesChecking the Input Venting SystemHOT Water Odor Anode ROD InspectionFlushing DrainingDeliming Using FLO-JUG Method Tank Cleanout ProcedureDeliming Solvents Service Replacement PartsSystem Diagnostics Ignition Module SystemSequence of Operation Flow Chart YESComplaint Cause User Serviceman Operational ChecklistRemedy Service and Repair Expenses Claim ProcedureKeepthiswarrantypostedadjacenttotheheaterforfuturereference Tank

BTI 120 specifications

The A.O. Smith BTI 120 is a highly efficient and reliable commercial water heater designed to meet the demanding hot water requirements of larger businesses and institutions. As part of A.O. Smith's BTI series, this model is engineered for performance, durability, and energy efficiency, making it an excellent choice for various commercial applications.

One of the standout features of the BTI 120 is its impressive heating capacity. With a maximum output of 120 gallons per hour, it is well-suited for establishments such as restaurants, hotels, and hospitals, where high volumes of hot water are required to ensure smooth operations. The unit is designed with a robust tank that can accommodate up to 120 gallons of hot water at any given time, ensuring that there is always hot water available for use.

In terms of technology, the A.O. Smith BTI 120 incorporates advanced control systems that allow for precise temperature management. The digital display and control panels provide real-time monitoring of the water temperature, ensuring that it meets the specific needs of the business. Additionally, the system features built-in safety controls to prevent overheating and maintain optimal performance, thereby ensuring safety and efficiency.

Energy efficiency is another critical characteristic of the BTI 120. The unit is designed to minimize energy consumption while maximizing heating efficiency. This is achieved through features such as high-quality insulation and the use of advanced heating elements that deliver hot water more quickly and with less energy wastage. As a result, businesses can benefit from lower operating costs and reduced environmental impact.

Durability is a key aspect of the BTI 120, as it is constructed with high-grade materials that are resistant to corrosion and wear. This ensures a long service life and reduces the need for frequent maintenance and replacements. Furthermore, the unit is designed to operate in various environments and withstand the rigors of continuous use.

In summary, the A.O. Smith BTI 120 is a top-tier commercial water heater that combines performance, efficiency, and durability. With its high heating capacity, advanced control systems, energy-saving features, and robust construction, it is an ideal solution for any business requiring a reliable hot water supply. Choosing the BTI 120 means investing in a product that can enhance operational efficiency and contribute to long-term cost savings.
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