A.O. Smith VB/VW- 750, VB/VW- 1000 Suggested Pipe Size For Multiple Gas Appliances Natural Gas

Page 29

TABLE 6. Suggested Pipe Size For Multiple Gas Appliances (Natural Gas).

Nominal

 

 

 

 

 

 

Maximum Capacity of Pipe in BTU/hr and kW for Gas Pressures of 14 in. W.C. (0.5 psi) or Less and

 

 

 

 

Iron Pipe

 

 

 

 

 

 

a Pressure Drop of 0.5 in. W.C. (based on 0.60 Specific Gravity Gas w/Heating Value of 1,000 BTU’s/Ft3)

 

 

 

 

Size

 

 

 

 

 

 

 

 

 

 

 

 

Length of Pipe in Feet (Meters)

 

 

 

 

 

 

 

 

 

 

(Inches)

 

10 (3.05)

 

20 (6.1)

 

30 (9.14)

 

40 (12.19)

 

50 (15.24)

 

60 (18.29)

 

70 (21.34)

 

80 (24.38)

 

90 (27.43)

 

100 (30.48)

 

125 (38.1)

 

150

 

175

 

200

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

BTU/hr

680,000

 

465,000

 

 

—

 

—

 

—

 

—

 

—

 

—

 

—

 

—

 

—

 

—

 

—

—

 

 

 

 

 

 

 

 

 

 

 

 

 

 

kW

199

 

136

 

 

—

 

—

 

—

 

—

 

—

 

—

 

—

 

—

 

—

 

—

 

—

—

1 1/4

BTU/hr

1,400,000

 

950,000

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

770,000

 

660,000

 

580,000

 

530,000

 

490,000

 

460,000

 

—

 

—

 

—

 

—

 

—

—

 

kW

410

 

278

 

226

 

193

 

170

 

155

 

144

 

135

 

—

 

—

 

—

 

—

 

—

—

1 1/2

BTU/hr

2,100,000

 

1,460,000

 

1,180,000

 

990,000

 

900,000

 

810,000

 

750,000

 

690,000

 

650,000

 

620,000

 

550,000

 

500,000

 

460,000

 

—

 

 

 

 

 

 

 

 

 

 

 

 

 

 

kW

615

 

428

 

346

 

290

 

264

 

237

 

220

 

202

 

190

 

182

 

161

 

146

 

135

 

—

2

BTU/hr

3,950,000

 

2,750,000

 

2,200,000

 

1,900,000

 

1,680,000

 

1,520,000

 

1,400,000

 

1,300,000

 

1,220,000

 

1,150,000

 

1,020,000

 

950,000

 

850,000

 

800,000

 

kW

1,157

 

805

 

644

 

556

 

492

 

445

 

410

 

381

 

357

 

337

 

299

 

278

 

249

 

234

2 1/2

BTU/hr

6,300,000

 

4,350,000

 

3,520,000

 

3,000,000

 

2,650,000

 

2,400,000

 

2,250,000

 

2,050,000

 

1,950,000

 

1,850,000

 

1,650,000

 

1,500,000

 

1,370,000

 

1,280,000

 

kW

1,845

 

1,274

 

1,031

 

879

 

776

 

703

 

659

 

600

 

571

 

542

 

483

 

439

 

401

 

375

3

BTU/hr

11,000,000

 

7,700,000

 

6,250,000

 

5,300,000

 

4,750,000

 

4,300,000

 

3,900,000

 

3,700,000

 

3,450,000

 

3,250,000

 

2,950,000

 

2,650,000

 

2,450,000

 

2,280,000

 

kW

3,222

 

2,255

 

1,830

 

1,552

 

1,391

 

1,259

 

1,142

 

1,084

 

1,010

 

952

 

864

 

776

 

718

 

668

4

BTU/hr

23,000,000

 

15,800,000

 

12,800,000

 

10,900,000

 

9,700,000

 

8,800,000

 

8,100,000

 

7,500,000

 

7,200,000

 

6,700,000

 

6,000,000

 

5,500,000

 

5,000,000

 

4,600,000

 

kW

6,736

 

4,627

 

3,749

 

3,192

 

2,841

 

2,577

 

2,372

 

2,197

 

2,109

 

1,962

 

1,757

 

1,611

 

1,464

 

1,347

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

29

TABLE 7. Suggested Pipe Size For Multiple Gas Appliances (Propane Gas).

Nominal

 

 

 

 

 

Maximum Capacity of Pipe in BTU/hr and kW for Gas Pressures of 14 in. W.C. (0.5 psi) or Less and

 

 

 

 

Iron Pipe

 

 

 

 

 

a Pressure Drop of 0.5 in. W.C. (based on 0.60 Specific Gravity Gas w/Heating Value of 1,000 BTU’s/Ft3)

 

 

 

 

Size

 

 

 

 

 

 

 

 

 

 

 

 

Length of Pipe in Feet (Meters)

 

 

 

 

 

 

 

 

 

 

(Inches)

 

10 (3.05)

 

20 (6.1)

 

30 (9.14)

 

40 (12.19)

 

50 (15.24)

 

60 (18.29)

70 (21.34)

80 (24.38) 90 (27.43)

 

100 (30.48)

 

125 (38.1)

 

150

 

175

 

200

 

 

 

 

 

 

 

 

 

 

 

1

BTU/hr

1,060,800

 

725,400

 

585,000

 

499,200

 

 

—

 

—

—

—

—

 

—

 

—

 

—

 

—

 

—

 

 

 

 

 

 

 

 

 

 

 

 

kW

311

 

212

 

171

 

146

 

 

—

 

—

—

—

—

 

—

 

—

 

—

 

—

 

—

1 1/4

BTU/hr

2,184,000

 

1,482,000

 

1,201,200

 

1,029,600

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

904,800

 

826,800

764,400

717,600

670,800

 

624,000

 

561,600

 

507,000

 

468,000

 

—

 

kW

640

 

434

 

352

 

302

 

265

 

242

224

210

196

 

183

 

164

 

148

 

137

 

—

1 1/2

BTU/hr

3,276,000

 

2,277,600

 

1,840,800

 

1,544,400

 

1,404,000

 

1,263,600

1,170,000

1,076,400 1,014,000

 

967,200

 

858,000

 

780,000

 

717,600

 

670,800

 

kW

959

 

667

 

539

 

452

 

411

 

370

343

315

297

 

283

 

251

 

228

 

210

 

196

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

BTU/hr

6,162,000

 

4,290,000

 

3,432,000

 

2,964,000

 

2,620,800

 

2,371,200

2,184,000

2,028,000 1,903,200

 

1,794,000

 

1,591,200

 

1,482,000

 

1,326,000

 

1,248,000

 

kW

1,805

 

1,256

 

1,005

 

868

 

768

 

694

640

594

557

 

525

 

466

 

434

 

388

 

366

2 1/2

BTU/hr

9,828,000

 

6,786,000

 

5,491,200

 

4,680,000

 

4,134,000

 

3,744,000

3,510,000

3,198,000 3,042,000

 

2,886,000

 

2,574,000

 

2,340,000

 

2,137,200

 

1,999,800

 

kW

2,878

 

1,987

 

1,608

 

1,371

 

1,211

 

1,097

1,028

937

891

 

845

 

754

 

685

 

626

 

585

3

BTU/hr

17,160,000

 

12,012,000

 

9,750,000

 

8,268,000

 

7,410,000

 

6,708,000

6,084,000

5,772,000 5,382,000

 

5,070,000

 

4,602,000

 

4,134,000

 

3,822,000

 

3,556,800

 

kW

5,026

 

3,518

 

2,856

 

2,421

 

2,170

 

1,965

1,782

1,690

1,576

 

1,485

 

1,348

 

1,211

 

1,119

 

1,042

4

BTU/hr

35,880,000

 

24,648,000

 

19,968,000

 

17,004,000

 

 

 

15,132,00013,728,00012,636,00011,700,00011,232,00010,452,000

 

 

 

9,360,000

 

8,580,000

 

7,800,000

 

7,176,000

 

kW

10,508

 

7,219

 

5,848

 

4,980

 

4,432

 

4,021

3,701

3,427

3,290

 

3,061

 

2,741

 

2,513

 

2,284

 

2,102

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Page 28 Page 30
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Page 28 Page 30
Contents Models Safe INSTALLATION, USE and Service General Safety GAS and Electrical Characteristics Dimension and capacity dataCapacity and Flow data Recovery CapacitiesIntroduction ContentsHigh Altitude Installations PrecautionsField Installed Components Grounding InstructionsControl Components ON/OFF Switch Water Temperature Limit ControlsTemperature Probes Circulating PumpLocation Required AbilityPanels and Covers VB HOT Water Heating BOILERS, are shipped with a 50 psiChemical Vapor Corrosion Installtion ClearancesLeveling Air Requirements Breathing Hazard Carbon Monoxide GasOutdoor Air Through One Opening Outdoor Air Through Two OpeningsOutdoorAir Through Two HorizontalDucts Outdoor Air Through Two Vertical DuctsAir From Other Indoor Spaces Power Vent Termination Clearances Sidewall Power VentDirect Vent Termination Clearances Sidewall Direct VentConnecting Vent to Boiler Special Installation ConsiderationsVenting System Using AL 29-4C Venting Supports Vertical Installation RequirementsHorizontal Installtion Requirements Vertical Termination BELOW. Keep Clear of ALL Obstructions Direct Vent Installation RequirementsDirect Vent Horizontal Direct Vent Using TWT with Vertical Intake Hot Water Heating Hydronic Equipment System installationGeneral Internal Contaminants Remote Probe Installation ProcedureHard Water Conditions Thermal Expansion Closed SystemGas Supply Line Sizing Gas ConnectionsTypical PRIMARY, Secondary Piping ONE VF Model VW HOT Water Supply Boiler with Vertical Tank ONE VF Model VW HOT Water Supply Boiler with Horizontal Tank Wiring Suggested Pipe Size For Multiple Gas Appliances Propane Gas Suggested Pipe Size For Multiple Gas Appliances Natural GasConnection Diagram Wiring DiagramPage VB/VW-500, 750 & 1000 Schematic Diagram Filling Hot Water Supply Boiler Installation Filling and Purging of Heating Boiler InstallationOperation Purging Gas LineRisk of Scalds Water Temperature RegulationMCB Three position Dipswitch MCB Ten Position DipswitchMCB/FCB Dipswitches Lighting & Operation Instructions for Models VB/VW 500, 750 Setting of the Test Mode AdjustmentHigh Fire Setting Natural GAS PropaneInputs to MCB Operating Sequence Temperature Setpoints System Control AlgorithmUIM Operating Procedures Description of FCB control states OperatingSetpointAdjustmentProcedureHighLimitDifferentialSetpointAdjustment Procedure UIM LED’s Fault Messages and Troubleshooting GuideFault Displayed Description Red LED Lockout Troubleshooting Ignition SystemMain Burner Preventative maintenanceTroubleshooting Gas Valve Relief Valve Burner MaintenanceCombustion Air Filter Blower CompartmentHeatExchangerPreventativeMaintenance Venting MaintenanceTube Cleaning Procedure Mechanical Removal of Deposits Replacement PartsPage Page Page Limited Warranty Tennessee Waltz Parkway, Ashland City, TN Phone

VB/VW- 1000, VB/VW- 750 specifications

A.O. Smith is a renowned name in the water heating industry, and their VB/VW-750 and VB/VW-1000 models reflect the cutting-edge advancements in both design and functionality. These commercial water heaters stand out due to their innovative features and robust characteristics, making them ideal solutions for various applications in commercial settings.

The VB/VW-750 and VB/VW-1000 models are designed with high efficiency in mind. They utilize advanced heat transfer technology that maximizes energy use, translating to significant savings on utility bills. These units are engineered to deliver consistent hot water supply, essential for businesses such as restaurants, hotels, and manufacturing facilities where extensive hot water demands are necessary.

One of the standout features of the VB/VW models is their high recovery rate. This means they can produce a large volume of hot water within a short period, catering to peak demand times without compromising performance. Additionally, the units come equipped with a durable tank made from high-quality materials to resist corrosion, which ensures a long lifespan and reliability in service.

The VB/VW-750 and VB/VW-1000 are also equipped with advanced control systems. These systems provide precise temperature regulation, improving safety and energy efficiency. The smart pumping system further enhances performance by optimizing water flow and reducing energy consumption during operation.

Maintenance and serviceability are key characteristics of these models. They feature easy access to critical components, allowing for quick inspections and repairs. This design consideration minimizes downtime, which is crucial for any business reliant on continuous hot water supply.

Both models are compliant with various industry standards, including energy efficiency regulations. A.O. Smith has focused on ensuring these water heaters not only meet but exceed these requirements, contributing to sustainability efforts.

In summary, the A.O. Smith VB/VW-750 and VB/VW-1000 models combine efficiency, reliability, and ease of maintenance. Their advanced features and cutting-edge technologies make them a top choice for commercial hot water applications, positioning A.O. Smith as a leader in the water heating industry. With their strong performance and durability, these models are designed to meet the demands of modern businesses while providing peace of mind regarding hot water availability.
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