A.O. Smith BTI 120 warranty Water Line Connections, Water Potable Heating and Space, GAS Piping

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WATER LINE CONNECTIONS

RELIEF VALVE

This manual provides detailed installation diagrams (see pages 15-21 of this manual) for typical methods of application for the water heaters.

The water heater may be installed by itself, or with a separate storage tank, on both single and two-temperature systems. When used with a separate storage tank, the circulation may be either by gravity or by means of a circulating pump. When a circulating pump is used it is important to note that the flow rate should be slow so that there will be a minimum of turbulence inside the heater.

If a water heater is installed in a closed water system, contact the water supplier or local plumbing inspector on how to control this situation.

WATER (POTABLE) HEATING AND SPACE

HEATING (See pages 15-21)

1.All piping components connected to this unit for space heating applications shall be suitable for use with potable water.

2.Toxic chemicals, such as those used for boiler treatment, shall NEVER be introduced into this system.

3.This unit may NEVER be connected to any existing heating system or component(s) previously used with a non-potable water heating appliance.

4.When the system requires water for space heating at temperatures higher than required for domestic water purposes, a tempering valve must be installed. Please refer to installation diagrams on pages 16 and 18 of this manual for suggested piping arrangements.

CAUTION

A closed system will exist if a check valve (without bypass), pressure reducing valve (without bypass), or a water meter (without bypass) is installed in the cold water line between the water heater and street main (or well).

Excessive pressure may develop in such closed systems, causing premature tank failure or intermittent relief valve operation. This is not a warranty failure. An expansion tank or a similar device may be required in the inlet supply line between the appliance and the meter or valve to compensate for the thermal expansion of the water.

SYSTEM CONNECTIONS

The system installation must conform to these instructions and to the local code authority having jurisdiction. Good practice requires that all heavy piping be supported.

THERMOMETERS (Not Supplied)

Thermometers should be obtained and field installed as shown in the installation diagrams.

Thermometers are installed in the system as a means of detecting the temperature of the outlet water supply.

This water heater is equipped with a combination temperature-pressure relief valve that complies with the standard for relief valves and automatic gas shutoff devices for hot water supply system, ANSI Z21.22. FOR SAFE OPERATION OF THE WATER HEATER, THE RELIEF VALVE(S) MUST NOT BE REMOVED OR PLUGGED.

ASME ratings cover pressure relief capacities. A.G.A. ratings cover release rate with temperature actuation.

In addition to the appliance relief valve, each remote storage tank which may be used in conjunction with this appliance shall also be installed with a properly sized, rated and approved combination temperature (ANSI) and pressure (ASME) relief valve(s).

WARNING

THE PURPOSE OF RELIEF VALVE IS TO AVOID EXCESSIVE PRESSURE OR TEMPERATURE INTO THE STEAM RANGE, WHICH MAY CAUSE SCALDING AT FIXTURES, TANK EXPLOSION, SYSTEM OR HEATER DAMAGE. NO VALVE IS TO BE PLACED BETWEEN THE RELIEF VALVE AND TANK.

Your local code authority may have other specific relief valve requirements.

A DRAIN LINE MUST BE CONNECTED TO THE RELIEF VALVE TO DIRECT DISCHARGE TO A SAFE LOCATION TO AVOID SCALDING OR WATER DAMAGE. THIS LINE MUST NOT BE REDUCED FROM THE SIZE OF THE VALVE OUTLETAND MUST NOT CONTAIN VALVES, RESTRICTIONS NOR SHOULD IT BE LOCATED IN FREEZING AREAS. DO NOT THREAD OR CAP THE END OF THIS LINE. RESTRICTED OR BLOCKED DISCHARGE WILL DEFEAT THE PURPOSE OF THE VALVE AND IS UNSAFE. DISCHARGE LINE SHALL BE INSTALLED TO ALLOW COMPLETE DRAINAGE OF BOTH THE VALVEAND LINE.

See SERVICE INFORMATION section for procedure and precautions.

GAS PIPING

Contact your local gas service company to ensure that adequate gas service is available and to review applicable installation codes for your area.

Size the main gas line in accordance with Table 6. The figures shown are for straight lengths of pipe at 0.5 in. W.C. (0.12kPa) pressure drop, which is considered normal for low pressure systems. Note: Fittings such as elbows, tees and line regulators will add to the pipe pressure drop. Also refer to the latest version of the National Fuel Gas Code.

WARNING

THE HEATER IS NOT INTENDED FOR OPERATION AT HIGHER THAN 14.0" W.C.(3.48Kpa) - NATURAL GAS, 14.0" W.C.(3.48Kpa)

-PROPANE GAS (1/2 POUND PER SQUARE INCH GAGE-3.45 kPA) SUPPLY GAS PRESSURE. EXPOSURE TO HIGHER SUPPLY PRESSURE MAY CAUSE DAMAGE TO THE GAS VALVE WHICH COULD RESULT IN FIRE OR EXPLOSION. IF OVERPRESSURE HAS OCCURRED SUCH AS THROUGH IMPROPER TESTING OF GAS LINES OR EMERGENCY

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Contents Commercial GAS, GLASS-LINED, TANK-TYPE Water Heater Models BTI 120 Thru 400/AGasand Electrical Characteristics ROUGH-IN-DIMENSIONSFront View TOP View Back View ROUGH-IN-DIMENSIONS Foreword Table of ContentsGeneral Safety Information High Limit Switch FeaturesHigh Altitude Installations Dishwashing Machine Requirement Electronic Ignition ControlExhaust Inducer Blower Assy Circulating PumpAIR Requirements LevelingClearances Hard WaterMultiple Heater Manifold VentingModel BTI-154 Type B GAS VentModel BTI-120 Model BTI-310 Model BTI-250Model BTI-275 System Connections Water Line ConnectionsWater Potable Heating and Space GAS PipingType of GAS GAS Piping and Dirt LEG InstallationGAS Pressure Regulator GAS Meter Size Natural Gases onlySingle Unit Wiring Diagram BTI-120 Through 400A Heater WiringCode Restrictions Installation DIAGRAMS-TOP INLET/OUTLET UsageTube Inlet Installation GeneralHorizontal Storage Tank and Forced Circulation Vertical Storage Tank and Forced CirculationPage Circulating Return Line Connection Installation DIAGRAMS-SIDE INLET/OUTLET UsageHeater with Mixing Valve and Recirculated Sanitizing Loop TWO PRE-HEATERS with Booster Heater Horizontal Storage Tank Manifold Kits Model Dimension aOperation Sequence of Operation What to do if YOU Smell GAS For Your Safety Read Before OperatingIgnitor Assembly Preventive MaintenanceWater Temperature Control Check the Ignitor AssemblyVenting System Remote Storage Tank Temperature ControlGAS Valves Checking the InputDraining HOT Water OdorAnode ROD Inspection FlushingDeliming Solvents Tank Cleanout ProcedureDeliming Using FLO-JUG Method Ignition Module System ServiceReplacement Parts System DiagnosticsYES Sequence of Operation Flow ChartRemedy Operational ChecklistComplaint Cause User Serviceman Tank Service and Repair ExpensesClaim Procedure Keepthiswarrantypostedadjacenttotheheaterforfuturereference

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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