A.O. Smith BTI 120 warranty Type B GAS Vent, Model BTI-120, Model BTI-154

Page 9

TECHNICAL DATA VENTING

TYPE B GAS VENT

Multiple Gas Fired Tank-Type Heaters

When venting multiple tank type heaters using Type B vent pipe, follow the installation diagram (figure 4) and tables below which give sizing and data based upon NFPA 54/ANSI Z223. 1992.

MODEL BTI-120

Input: 120,000 Btu/hr

 

 

 

 

Total Vent Height (Feet)

 

 

 

 

Vent Connector Size: 5 inches

 

 

6

8

10

15

20

 

30

50

100

 

 

Input Btu/hr

 

Rise

 

Vent Connector Diameter (Inches)

 

 

 

120,000

 

1 Ft.

6

6

 

5

5

5

 

5

5

5

 

 

120,000

 

2 Ft.

5

5

 

5

5

5

 

5

5

5

 

 

120,000

 

3 Ft.

5

5

 

5

5

5

 

5

5

5

 

Number of

Combined Input

 

 

 

 

 

 

 

 

 

 

 

 

 

BTI 120 Heaters

in Thousands of Btu/hr

 

 

Manifold and Common Vent Diameter (Inches)

2

240,000

 

 

7

7

6

6

6

 

6

6

6

 

3

360,000

 

 

8

8

7

7

7

 

6

6

6

 

4

480,000

 

 

9

9

9

8

8

 

7

7

6

 

MODEL BTI-154

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Input: 154,000 Btu/hr

 

 

 

 

Total Vent Height (Feet)

 

 

 

 

Vent Connector Size: 6 inches

 

 

6

8

10

15

20

 

30

50

100

 

 

Input Btu/hr

 

Rise

 

Vent Connector Diameter (Inches)

 

 

 

154,000

 

1 Ft.

6

6

6

6

6

 

6

6

6

 

 

154,000

 

2 Ft.

6

6

6

6

6

 

6

6

6

 

 

154,000

 

3 Ft.

6

6

6

6

6

 

6

6

6

 

Number of

Combined Input

 

 

 

 

 

 

 

 

 

 

 

 

 

BTI 154 Heaters

in Thousands of Btu/hr

 

 

Manifold and Common Vent Diameter (Inches)

2

308,000

 

 

7

7

6

6

6

 

6

6

6

 

3

462,000

 

 

8

8

7

7

7

 

6

6

6

 

4

616,000

 

 

9

9

9

8

8

 

7

7

6

 

MODEL BTI-180,199, 200

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Input: 180,000, 190,000 and 199,000 Btu/hr

 

 

 

Total Vent Height (Feet)

 

 

 

 

Vent Connector Size: 6 inches

 

 

6

8

10

15

20

 

30

50

100

 

 

Input Btuh/hr

 

Rise

 

Vent Connector Diameter (Inches)

 

 

 

180,000

 

1 Ft.

7

7

6

6

6

 

6

6

6

 

 

190,000

 

1 Ft.

7

7

7

6

6

 

6

6

6

 

 

199,000

 

1 Ft.

7

7

7

6

6

 

6

6

6

 

 

180,000

 

2 Ft.

6

6

6

6

6

 

6

6

6

 

 

190,000

 

2 Ft.

7

6

6

6

6

 

6

6

6

 

 

199,000

 

2 Ft.

7

7

6

6

6

 

6

6

6

 

 

180,000

 

3 Ft.

6

6

6

6

6

 

6

6

6

 

 

190,000

 

3 Ft.

6

6

6

6

6

 

6

6

6

 

 

199,000

 

3 Ft.

6

6

6

6

6

 

6

6

6

 

Number of

Combined Input

 

 

 

 

 

 

 

 

 

 

 

 

 

BTI Heaters

in Thousands of Btu/hr

 

 

Manifold & Common Vent Diameter (Inches)

2

360,000

 

 

7

7

6

6

6

 

6

6

6

 

380,000

 

 

7

7

7

6

6

 

6

6

6

 

 

398,000

 

 

6

7

7

6

6

 

6

6

6

 

 

540,000

 

 

7

6

6

6

6

 

6

6

6

 

3

570,000

 

 

7

6

6

6

6

 

6

6

6

 

 

597,000

 

 

6

7

6

6

6

 

6

6

6

 

 

720,000

 

 

6

6

6

6

6

 

6

6

6

 

4

760,000

 

 

6

6

6

6

6

 

6

6

6

 

 

796,000

 

 

6

6

6

6

6

 

6

6

6

 

9

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Contents
Commercial GAS, GLASS-LINED, TANK-TYPE Water Heater Models BTI 120 Thru 400/AROUGH-IN-DIMENSIONS Front View TOP View Back View ROUGH-IN-DIMENSIONSGasand Electrical Characteristics Foreword Table of ContentsGeneral Safety Information Features High Altitude Installations High Limit Switch Exhaust Inducer Blower Assy Electronic Ignition ControlCirculating Pump Dishwashing Machine RequirementClearances LevelingHard Water AIR RequirementsMultiple Heater Manifold VentingType B GAS Vent Model BTI-120Model BTI-154 Model BTI-250 Model BTI-275Model BTI-310 Water Potable Heating and Space Water Line ConnectionsGAS Piping System ConnectionsGAS Pressure Regulator GAS Piping and Dirt LEG InstallationGAS Meter Size Natural Gases only Type of GASSingle Unit Wiring Diagram BTI-120 Through 400A Heater WiringTube Inlet Installation Installation DIAGRAMS-TOP INLET/OUTLET UsageGeneral Code RestrictionsHorizontal 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 OperatingWater Temperature Control Preventive MaintenanceCheck the Ignitor Assembly Ignitor AssemblyGAS Valves Remote Storage Tank Temperature ControlChecking the Input Venting SystemAnode ROD Inspection HOT Water OdorFlushing DrainingTank Cleanout Procedure Deliming Using FLO-JUG MethodDeliming Solvents Replacement Parts ServiceSystem Diagnostics Ignition Module SystemYES Sequence of Operation Flow ChartOperational Checklist Complaint Cause User ServicemanRemedy Claim Procedure Service and Repair ExpensesKeepthiswarrantypostedadjacenttotheheaterforfuturereference Tank
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