A.O. Smith BTI 120 warranty Leveling, Clearances, Hard Water, AIR Requirements

Page 7

WARNING

FLAMMABLE ITEMS, PRESSURIZED CONTAINERS OR ANY OTHER POTENTIAL FIRE HAZARDOUS ARTICLES MUST NEVER BE PLACED ON ORADJACENT TO THE HEATER. OPEN CONTAINERS OR FLAMMABLE MATERIAL SHOULD NOT BE STORED OR USED IN THE SAME ROOM WITH THE HEATER.

When installing the heater, consideration must be given to proper location. Location selected should be as close to the stack or chimney as practicable, with adequate air supply and as centralized with the piping system as possible.

THE HEATER MUST NOT BE LOCATED IN AN AREA WHERE IT WILL BE SUBJECT TO FREEZING.

LOCATE IT NEAR A FLOOR DRAIN. THE HEATER SHOULD BE LOCATED IN AN AREA WHERE LEAKAGE FROM THE HEATER OR CONNECTIONS WILL NOT RESULT IN DAMAGE TO THE ADJACENT AREA OR TO LOWER FLOORS OF THE STRUCTURE.

WHEN SUCH LOCATIONS CANNOT BE AVOIDED, A SUITABLE DRAIN PAN SHOULD BE INSTALLED UNDER THE HEATER. Such pans should be fabricated with sides at least 2" (51mm) deep, with length and width at least 2" (51mm) greater than the diameter of the heater and must be piped to an adequate drain. The pan must not restrict combustion air flow.

For appliance installation locations with elevations above 2000 feet (610m), refer to HIGH ALTITUDE INSTALLATIONS section of this manual for input reduction procedure.

LEVELING

If the unit is not level, insert the bolts which were used in crating into the legs to correct this condition.

CLEARANCES

These heaters are approved for installation on combustible flooring in an alcove when the minimum clearance from any combustion construction are followed as indicated in figure 6 and Table 4.

Model BTI 366 is approved for installation on non-cumbustible flooring or combustible flooring with leg kit part no. 6570.

In all installations the minimum combustible clearances from vent piping shall be 6" (152mm). Vent piping passing through a combustible wall or ceiling must be a continuous run (no joints) and retain the 6" (152mm) clearance unless an approved reducing thimble is used.

A service clearance of 24" (610mm) should be maintained from serviceable parts, such as relief valves, flue baffles, thermostats, cleanout openings or drain valves.

The units are approved for installation with side, rear and ceiling clearances as indicated below:

 

MINIMUM CLEARANCES TO COMBUSTIBLES

MODEL

 

”A”

”B”

”C”

”D”

 

 

RIGHTSIDE

LEFTSIDE

BACK

CEILING

BTI-120

 

2” (51mm)

2” (51mm)

2” (51mm)

12” (305mm)

 

BTI-154

 

1” (25.4mm)

1” (25.4mm)

1” (25.4mm)

12” (305mm)

 

BTI-180

 

3” (76mm)

3” (76mm)

3” (76mm)

12” (305mm)

BTI-199

 

3” (76mm)

3” (76mm)

3” (76mm)

12” (305mm)

 

BTI-200/A

 

2” (51mm)

2” (51mm)

2” (51mm)

12” (305mm)

 

BTI-250/A

 

2” (51mm)

2” (51mm)

2” (51mm)

12” (305mm)

BTI-275/A

 

2” (51mm)

2” (51mm)

2” (51mm)

12” (305mm)

 

BTI-310/A

 

3” (76mm)

3” (76mm)

3” (76mm)

12” (305mm)

 

BTI-366/A

 

3” (76mm)

3” (76mm)

3” (76mm)

12” (305mm)

 

BTI-400/A

 

3” (76mm)

3” (76mm)

3” (76mm)

12” (305mm)

TABLE 4

CLEARANCESTONONCOMBUSTIONCONSTRUCTION

 

MODEL

”A”

”B”

”C”

”D”

 

 

RIGHTSIDE

LEFTSIDE

BACK

CEILING

 

BTI-120

0

0

0

12” (305mm)

 

BTI-154

0

0

0

12” (305mm)

 

BTI-180

3” (76mm)

3” (76mm)

3” (76mm)

12” (305mm)

 

BTI-199

3” (76mm)

3” (76mm)

3” (76mm)

12” (305mm)

 

BTI-200/A

0

0

0

12” (305mm)

 

BTI-250/A

0

0

0

12” (305mm)

 

BTI-275/A

0

0

0

12” (305mm)

 

BTI-310/A

0

0

0

12” (305mm)

 

BTI-366/A

0

0

0

12” (305mm)

 

BTI-400/A

3” (76mm)

3” (76mm)

3” (76mm)

12” (305mm)

TABLE 5

HARD WATER

Where hard water conditions exist, water softening or the threshold type of water treatment is recommended. This will protect the dishwashers, coffee urns, water heaters, water piping and other equipment.

See MAINTENANCE section for details of tank cleanout procedure.

AIR REQUIREMENTS

REFER TO THE LATEST EDITION OF THE "NATIONAL FUEL GAS CODE" ANSI Z223.1/NFPA 54.

KEEP APPLIANCE AREA CLEAR AND FREE OF COMBUSTIBLE MATERIALS, GASOLINE AND OTHER FLAMMABLES, VAPORS AND LIQUIDS.

DO NOT OBSTRUCT THE FLOW OF COMBUSTION OR VENTILATING AIR.

WARNING

FOR SAFE OPERATION PROVIDE ADEQUATE AIR FOR COMBUSTION AND VENTILATION. AN INSUFFICIENT SUPPLY OF AIR WILL CAUSE RECIRCULATION OF COMBUSTION PRODUCTS RESULTING IN AIR CONTAMINATION THAT MAY BE HAZARDOUS TO LIFE. SUCH A CONDITION OFTEN WILL RESULT IN AYELLOW, LUMINOUS BURNER FLAME, CAUSING CARBONING OR SOOTING OF THE COMBUSTION CHAMBER, BURNERS AND FLUE TUBES AND CREATES A RISK OF ASPHYXIATION.

Where an exhaust fan is supplied in the same room with a heater, sufficient openings for air must be provided in the walls.

UNDERSIZED OPENINGS WILL CAUSE AIR TO BE DRAWN INTO THE ROOM THROUGH THE CHIMNEY, CAUSING POOR COMBUSTION. SOOTING MAY RESULT IN SERIOUS DAMAGE

TO THE HEATER AND RISK OF FIRE OR EXPLOSION.

UNCONFINEDSPACE

In buildings of conventional frame, brick, or stone construction, unconfined spaces may provide adequate air for combustion, ventilation and draft hood dilution.

If the unconfined space is within a building of tight construction (buildings using the following construction: weather stripping, heavy insulation, caulking, vapor barrier, etc.), air for combustion, ventilation and draft hood dilution must be obtained from outdoors. The installation instructions for confined spaces in tightly constructed buildings must be followed to ensure adequate air supply.

CONFINEDSPACE

When drawing combustion and dilution air from inside a conventionally constructed building to a confined space, such a space shall be provided with two permanent openings, ONE IN OR WITHIN 12 INCHES (30.5cm) OF THE ENCLOSURE TOP

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Contents Commercial GAS, GLASS-LINED, TANK-TYPE Water Heater Models BTI 120 Thru 400/AFront View TOP View Back View ROUGH-IN-DIMENSIONS ROUGH-IN-DIMENSIONSGasand Electrical Characteristics Foreword Table of ContentsGeneral Safety Information High Altitude Installations FeaturesHigh Limit Switch Dishwashing Machine Requirement Electronic Ignition ControlExhaust Inducer Blower Assy Circulating PumpAIR Requirements LevelingClearances Hard WaterMultiple Heater Manifold VentingModel BTI-120 Type B GAS VentModel BTI-154 Model BTI-275 Model BTI-250Model BTI-310 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 Using FLO-JUG Method Tank Cleanout ProcedureDeliming Solvents Ignition Module System ServiceReplacement Parts System DiagnosticsYES Sequence of Operation Flow ChartComplaint Cause User Serviceman Operational ChecklistRemedy 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.