A.O. Smith BTI 120 warranty GAS Pressure Regulator, GAS Meter Size Natural Gases only, Type of GAS

Page 12

MALFUNCTION OF THE SUPPLY SYSTEM, THE GAS VALVE

GAS PIPING AND DIRT LEG INSTALLATION

MUST BE CHECKED FOR SAFE OPERATION. MAKE SURE

 

THAT THE OUTSIDE VENTS ON THE SUPPLY REGULATORS

 

AND THE SAFETY VENT VALVES ARE PROTECTED AGAINST

 

BLOCKAGE. THESEARE PARTS OFTHE GAS SUPPLY SYSTEM,

 

NOT THE HEATER. VENT BLOCKAGE MAY OCCUR DURING

 

ICE STORMS.

 

TABLE 6 - GAS SUPPLY LINE SIZES (IN INCHES)*

MAXIMUM CAPACITY OF PIPE IN

CUBIC FEET PER HOUR

LENGTH

 

 

NOMINAL IRON PIPE SIZES (INCHES)

 

IN

 

 

 

 

 

 

 

 

 

FEET

1/2"

3/4"

1"

1 1/4"

1 1/2"

2"

2 1/2"

3"

4"

10

175

360

680

1400

2100

3960

6300

11000

23000

20

120

250

465

950

1460

2750

4360

7700

15800

30

97

200

375

770

1180

2200

3520

6250

12800

40

82

170

320

660

990

1900

3000

5300

10900

50

73

151

285

580

900

1680

2650

4750

9700

60

66

138

260

530

810

1520

2400

4300

8800

70

61

125

240

490

750

1400

2250

3900

8100

80

57

118

220

460

690

1300

2050

3700

7500

90

53

110

205

430

650

1220

1950

3450

7200

100

50

103

195

400

620

1150

1850

3250

6700

125

44

93

175

360

550

1020

1650

2950

6000

150

40

84

160

325

500

950

1500

2650

5500

175

37

77

145

300

460

850

1370

2450

5000

200

35

72

135

280

430

800

1280

2280

4600

IT IS IMPORTANT TO GUARD AGAINST GAS VALVE FOULING FROM CONTAMINANTS IN THE GAS WAYS. SUCH FOULING MAY CAUSE IMPROPER OPERATION, FIRE OR EXPLOSION.

IF COPPER SUPPLY LINES ARE USED THEY MUST BE INTERNALLY TINNED AND CERTIFIED FOR GAS SERVICE. BEFORE ATTACHING THE GAS LINE, BE SURE THAT ALL GAS PIPE IS CLEAN ON THE INSIDE.

TO TRAP ANY DIRT OR FOREIGN MATERIAL IN THE GAS SUPPLY LINE, A DIRT LEG (SOMETIMES CALLED SEDIMENT TRAP OR DRIP LEG) MUST BE INCORPORATED IN THE PIPING (SEE FIG. 8). THE DIRT LEG MUST BE READILY ACCESSIBLE AND NOT SUBJECT TO FREEZING CONDITIONS. INSTALL IN ACCORDANCE WITH RECOMMENDATIONS OF SERVING GAS SUPPLIERS. REFER TO THE LATEST VERSION OF THE NATIONAL FUEL GAS CODE.

To prevent damage, care must be taken not to apply too much torque when attaching gas supply pipe to gas valve inlet.

Apply joint compounds (pipe dope) sparingly and only to the male threads of pipe joints. Do not apply compounds to the first two threads. Use compounds resistant to the action of liquefied petroleum gases.

BEFORE PLACING THE HEATER IN OPERATION, CHECK FOR GAS LEAKAGE. Use soap and water solution or other material acceptable for the purpose in locating the leaks. DO NOT USE MATCHES, CANDLES, FLAME OR OTHER SOURCES OF IGNITION FOR THIS PURPOSE.

DISCONNECT THE HEATER AND ITS MANUAL GAS SHUTOFF VALVE FROM THE GAS SUPPLY PIPING SYSTEM DURING ANY SUPPLY PRESSURE TESTING EXCEEDING 1/2 PSIG. GAS SUPPLY LINE MUST BE CAPPED WHEN DISCONNECTED FROM THE HEATER FOR TEST PRESSURES OF 1/2 PSIG OR LESS. THE APPLIANCE NEED NOT BE DISCONNECTED, BUT MUST BE ISOLATED FROM THE SUPPLY PRESSURE TEST BY CLOSING THE MANUAL GAS SHUTOFF VALVE.

FIGURE9

PURGING

Gas line purging is required with new piping or systems in which air has entered.

CAUTION

PURGING SHOULD BE PERFORMED BY PERSONS EXPERIENCED IN THIS TYPE GAS SERVICE. TO AVOID RISK OF FIRE OR EXPLOSION, PURGE DISCHARGE MUST NOT ENTER CONFINED AREAS OR SPACES WHERE IGNITION CAN OCCUR. THE AREA MUST BE WELL VENTILATED AND ALL SOURCES OF IGNITION MUSTBE INACTIVATED OR REMOVED.

GAS METER SIZE — NATURAL GASES ONLY

Be sure the gas meter has sufficient capacity to supply the full rated gas input of the water heater as well as the requirements of all other gas fired equipment supplied by the meter. If gas meter is too small, ask the gas company to install a larger meter having adequate capacity.

GAS PRESSURE REGULATOR

The gas pressure regulator is built into the gas valve and is equipped to operate on the gas specified on model and rating plate. The regulator is factory adjusted to deliver gas to burner at correct water column pressure allowing for a nominal pressure drop through the controls.

The minimum gas supply pressure for input adjustment must not be less than 4.5" w.c. for natural gas.

Do not subject the combination gas valve to inlet gas pressures of more than 14.0" W.C. - natural gas. A service regulator is necessary if higher gas pressures are encountered.

Gas pressure specified in Table 7, refer to flow pressure taken at pressure tap of automatic gas valve while heater is operating.

TABLE 7

MANIFOLD GAS PRESSURE IN INCHES

OF WATER COLUMN (ALL MODELS*)

TYPE OF GAS

Natural Propane

3.510.0

12

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Contents Models BTI 120 Thru 400/A Commercial GAS, GLASS-LINED, TANK-TYPE Water HeaterROUGH-IN-DIMENSIONS Front View TOP View Back View ROUGH-IN-DIMENSIONSGasand Electrical Characteristics Table of Contents ForewordGeneral Safety Information Features High Altitude InstallationsHigh Limit Switch Electronic Ignition Control Exhaust Inducer Blower AssyCirculating Pump Dishwashing Machine RequirementLeveling ClearancesHard Water AIR RequirementsVenting Multiple Heater ManifoldType B GAS Vent Model BTI-120Model BTI-154 Model BTI-250 Model BTI-275Model 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 DrainingTank Cleanout Procedure Deliming Using FLO-JUG MethodDeliming Solvents Service Replacement PartsSystem Diagnostics Ignition Module SystemSequence of Operation Flow Chart YESOperational Checklist Complaint Cause User ServicemanRemedy 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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