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TABLE OF CONTENTS Firetube Boilers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section A A1 – Promethean Boilers Model CB-LE (Dry-Back) 125-800 HP Low NOx A2 – Promethean Boilers Model 4WI (Wet-Back) 100-800 HP Low NOx A3 – Criterion Boilers Model 4WG (Wet-Back) 100-800 HP Low NOx A4 – Criterion Boilers Model ICB (Intercooled Back) 100-800 HP Low NOx A5 – Model CBL (Wet-Back) 900-1500 HP Low NOx A6 – Model CB (Dry-Back) 15-100 HP A7 – Model CBE (Dry-Back) 60-80 HP A8 – Model CB Ohio Special (Dry-Back) 100-225 HP A9 – Model CEW Ohio Special Boilers (Wet-Back) 100-225 HP A10 – Model CBR Boilers 125-800 HP A11 – Optimized Boiler Package

Commercial Boilers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section B B1 – Model FLX Boilers B2 – Model 4 Boilers B3 – Model 5 Boilers B4 – Electric Boilers B5 – ClearFire Model CFC Condensing Hot Water Boilers B6 – ClearFire Model CFH Steam Boilers B7 – ClearFire Model CFV Steam Boilers

Industrial Watertube Boilers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section C Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section D Emissions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section E Stacks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section F Economizers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section G Feedwater Systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section H H1 – Spraymaster Deaerators (Single Tank) H2 – Spraymaster Deaerators (Duo Tank) H3 – Traymaster Deaerators H4 – Boilermate Deaerators H5 – Surge Tanks H6 – Boiler Feed Systems H7 – Chemical Feed Systems and Metering Pumps H9 – Softeners H10 – Dealkalizers H11 – Blowdown Separators H12 – Blowdown Heat Recovery Systems H13 – Flash Tank Heat Exchangers H14 – Sample Coolers

System Fundamentals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Section I I1 – Boiler Selection Considerations I2 – Hot Water Systems I3 – Steam Systems I4 – General Engineering Data I5 – Alternative Fuels

Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section J

Notes

Section A1 Promethean Series Model CB-LE Boilers

CB-LE T iny T ots for you

A lot of little words for a very little s pace R eggie the dog was here

T his text is to s mall to read. If you are able to read this , you mus t be an ins ect.

WAR NING ! WAR NING !!! T HIS T AG IS NOT T UNLE S OB S A PS Y C HOLOGE R E MOV E D F IR S T BE IS T HAS T O E NS C ONS ULT E D. T UR E ME NT AL S HIS IS T AB ILIT Y.

R ick Marino is hazardous to your health B ut, he has managed to hire exceptional employees . Unfortunately, they continue to write crazy unneces s ary comments on drawings .

B LAH, B LAH, B LAH, B LAH, B LAH, B LAH, B LAH, B LAH, B LAH, B LAH, B LAH, B LAH,

69 69

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CONTENTS FEATURES AND BENEFITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-4 True Boiler/Burner/Low NOx Package. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-4 PRODUCT OFFERING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-4 Standard Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-4 Available Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-4 DIMENSIONS AND RATINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-4 PERFORMANCE DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-24 Specifying Boiler Efficiency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-24 Efficiency Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-24 Emissions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-25 ENGINEERING DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-28 Sound Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-28 Gas-Fired Burners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-29 Oil-Fired Burners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-33 General Boiler Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-33 Boiler Room Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-33 Stack Support Capabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-33 Stack/Breeching Size Criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-33 Boiler Room Combustion Air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-33 Sample Specifications (Steam) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-43 Sample Specifications (Hot Water) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-55

A1-1 03-08

Promethean Series Model CB-LE

Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure

Firetube Boilers

ILLUSTRATIONS A1-1. CB-LE Steam - 125-200 HP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-2. CB-LE Steam - 250-350 HP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-3. CB-LE Steam - 400-800 HP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-4. CB-LE Hot Water - 125-200 HP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-5. CB-LE Hot Water 250-350 HP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-6. CB-LE Hot Water 400-800 HP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-7. Space Required to Open Rear Head on Model CB-LE Boilers Equipped with Davits . . A1-8. Model CB-LE Boiler Mounting Piers (60” and 78”) . . . . . . . . . . . . . . . . . . . . . . . . . A1-9. Model CB-LE Boiler Mounting Piers (96”) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-10. Lifting Lug Location, Model CB-LE Boilers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-11. Predicted Stack Temperature Increase for Pressure Greater Than 125 psig . . . . . . . A1-12. Standard Gas Train Connection Size and Location . . . . . . . . . . . . . . . . . . . . . . . . A1-13. Typical Gas Piping Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-14. Model CB-LE Gas Train Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-15. No.2 Oil Connection Size, Location, and Recommended Line Sizes . . . . . . . . . . . . A1-16. No. 2 Oil Piping, Single Boiler Installation, Remote Oil Pump . . . . . . . . . . . . . . . . A1-17. No. 2 Oil Piping, Multiple Boiler Installation, Remote Oil Pumps . . . . . . . . . . . . . . A1-18. No. 2 Oil Piping, Multiple Boiler Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-19. No. 2 Oil Transfer Tank Detail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-20. Typical Arrangement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-21. Boiler Room Length (Typical Layouts) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-22. Boiler Room Width (Typical Layout) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-23. Breeching Arrangement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TABLES Table A1-1. Model CB-LE Steam Boiler Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table A1-2. Model CB-LE Hot Water Boiler Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table A1-3. Model CB-LE Steam Boiler Dimensions, 60” (15 - 150 psig Design Pressure). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table A1-4. Model CB-LE Steam Boiler Dimensions, 78” (15 - 150 psig Design Pressure). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table A1-5. Model CB-LE Steam Boiler Dimensions, 96” (15 - 150 psig Design Pressure). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table A1-6. Model CB-LE Hot Water Boiler Dimensions, 60” (30 and 125 psig Design Pressure). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table A1-7. Model CB-LE Hot Water Boiler Dimensions, 78” (30 and 125 psig Design Pressure). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table A1-8. Model CB-LE Hot Water Boiler Dimensions, 96” (30 and 125 psig Design Pressure). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table A1-9. Fan Motor Horsepower Requirements - Steam Boilers O 150 psig, all HW boilers . . . . Table A1-10. Fan Motor Horsepower Requirements - Steam Boilers >150 psig . . . . . . . . . . . . . . Table A1-11. Model CB-LE Boiler Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table A1-12. Steam Boiler Safety Valve Openings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table A1-13. Hot Water Boiler Relief Valve Openings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table A1-14. Predicted Fuel-to-Steam Efficiencies - Natural Gas . . . . . . . . . . . . . . . . . . . . . . . . Table A1-15. Predicted Fuel-to-Steam Efficiencies - No. 2 Oil . . . . . . . . . . . . . . . . . . . . . . . . . . A1-2 03-08

A1-6 A1-8 A1-10 A1-12 A1-14 A1-16 A1-21 A1-21 A1-22 A1-23 A1-26 A1-32 A1-35 A1-36 A1-36 A1-37 A1-37 A1-38 A1-38 A1-39 A1-41 A1-41 A1-42

A1-5 A1-5 A1-6 A1-8 A1-10 A1-12 A1-14 A1-16 A1-18 A1-18 A1-19 A1-20 A1-20 A1-26 A1-27

Firetube Boilers

Promethean Series Model CB-LE

Table A1-16. CB-LE Boilers - Natural Gas, Emission Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-27 Table A1-17. CB-LE Boilers - No. 2 Oil, Emission Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-27 Table A1-18. Model CB-LE Predicted Sound Levels 30 ppm NOx Systems . . . . . . . . . . . . . . . . . . A1-28 Table A1-19. Standard, Undersize, and Oversize Gas Trains, Model CB-LE Boilers . . . . . . . . . . . . A1-30 Table A1-20. Recommended NTI Gas Train Sizes & Pressure Ranges . . . . . . . . . . . . . . . . . . . . . . A1-31 Table A1-21. Minimum Required Regulated Gas Pressure Altitude Conversion . . . . . . . . . . . . . . . A1-32 Table A1-22. Maximum Gas Consumption (CFH) for Natural Gas and Propane Vapor. . . . . . . . . . . A1-32 Table A1-23. Model CB-LE Blowdown Tank Sizing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-39 Table A1-24. Heating Surface, Model CB-LE Boilers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-39 Table A1-25. Steam Volume & Disengaging Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-40 Table A1-26. Recommended Steam Nozzle Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-40 Table A1-27. Recommended Non-Return Valve Size. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-40 Table A1-28. Blower Motor Selection CB-LE NTI Boilers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1-40 Available as an option to the Model CB Firetube Dryback Boiler (125 - 800 hp), the Low Emission Option provides NOx control, top performance, and reliable Cleaver-Brooks efficiency. The Low Emission Option combines the packaging of induced flue gas recirculation with the Cleaver-Brooks integral front head. The front head routes the flue gases from the fourth pass to the fan and burner assembly for reliable low NOx performance. The enhanced burner design assures maximum NOx reduction at all firing rates while maintaining top of the line boiler performance. Standard Low Emission Options include 60, 30, 25, or 20 ppm packages (all NOx emission levels are given on a dry volume basis and corrected to 3% O2): • NOx performance for 60 ppm (natural gas corrected to 3% O2) uses a standard size combustion air fan for induced flue gas recirculation. • NOx performance for 30, 25, or 20 ppm (natural gas corrected to 3% O2) includes a larger combustion air fan/ motor assembly and a larger internal NOx reduction system. Cleaver-Brooks' commitment to lowering emissions is based on more than 400 low NOx installations - all passing guaranteed emission performance levels.

A1-3 03-08

Promethean Series Model CB-LE

Firetube Boilers

FEATURES AND BENEFITS The Cleaver-Brooks Model CB Boiler - the premium firetube on the market today includes the four-pass dryback design, five square feet of heating surface per boiler horsepower, and maximum boiler efficiency. In addition to the features of the Model CB Boiler, the Low Emission Option provides the following Integral Front Head Design •

Single-piece front door.

•

Fan cassette assembly for easy access to fan and motor.

•

Guaranteed low nitrogen oxide (NOx) performance.

•

Enhanced burner performance.

•

Improved flame stability and combustion control.

•

Intimate mixing of air and fuel assures minimum CO levels at low NOx levels.

True Boiler/Burner/Low NOx Package. • UL/ULC approved package. •

Assures highest fuel-to-steam efficiency.

•

Eliminates the need for field installation of burner, controls, or NOx equipment.

•

Single point positioning of fuel and air ensures ease of startup and provides reliable operation.

PRODUCT OFFERING The Low Emission Option currently is available on:

Standard Equipment

Available Options

•

125 - 800 hp Model CB Firetube Dryback Boilers.

•

High-pressure and low-pressure steam and hot water designs.

•

Natural Gas, No. 2 oil, or combination fired.

•

Retrofit capability.

•

Model CB Firetube Boiler.

•

New integral front head with internal low NOx system.

•

Enhanced burner design.

For option details, contact your local Cleaver-Brooks authorized representative. •

Full line of Model CB Firetube options.

•

Additional NOx reduction packages.

DIMENSIONS AND RATINGS The Model CB-LE dimensions and ratings are provided inTable A1-1 through Table A1-8, and in Figure A1-1 through Figure A1-6.

A1-4 03-08

Firetube Boilers

Promethean Series Model CB-LE

Table A1-1. Model CB-LE Steam Boiler Ratings BOILER HP

125

150

200

250

300

350

400

500

Rated Steam Cap. (lbs/hr from and @ 212 °F)

4313

5175

6900

8625

10350

12075

13800

Btu Output (1000 Btu/hr)

4184

5021

6695

8369

10043

11716

13390

600

700

750

800

17250

20700

24150

25875

27600

16738

20085

23432

25106

26779

RATINGS SEA LEVEL TO 700 FT

APPROXIMATE FUEL CONSUMPTION AT RATED CAPACITY Light Oil (gph)A

36.4

43.7

58.3

72.9

87.5

102.1

116.6

145.8

175.0

204.1

218.7

233.3

Natural Gas (cfh) MBtu

5103

6124

8165

10206

12247

14288

16329

20412

24494

28576

30618

32659

Gas (Therm/hr)

51.0

61.2

81.7

102.1

122.5

142.8

163.3

204.2

245.0

285.8

306.2

326.6

POWER REQUIREMENTS - SEA LEVEL TO 700 FT, 60 HZ Blower Motor hp

Refer to Tables A1-9 and A1-10

Oil Pump Motor, hp No. 2 Oil

1/2

1/2

1/2

1/2

3/4

3/4

3/4

3/4

3/4

1

1

1

Air Compressor Motor hp (Oil firing Only)

3

3

3

5

5

5

7-1/2

7-1/2

7-1/2

7-1/2

7-1/2

7-1/2

NOTES: A. Based on 140,000 Btu/gal.

Table A1-2. Model CB-LE Hot Water Boiler Ratings BOILER HP

125

150

200

250

300

350

400

500

600

700

750

800

Rated Cap. Btu Output (1000 Btu/hr)

4184

5021

POWER REQUIREMENTS - SEA LEVEL TO 700 FT, 60 HZ 6695 8369 10043 11716 13390 16738 20085 23432

25106

26779

Light Oil (gph)A

36.4

43.7

58.3

72.9

87.5

102.1

116.6

145.8

175.0

204.1

218.7

233.3

Natural Gas (cfh) MBtu

5103

6124

8165

10206

12247

14288

16329

20415

Gas (Therm/hr)

51.0

61.2

81.7

102.1

122.5

142.9

163.3

204.2

24494

28576

30618

32659

245.0

285.8

306.2

326.6

APPROXIMATE FUEL CONSUMPTON AT RATED CAPACITY

POWER REQUIREMENTS - SEA LEVEL TO 700 FT, 60 HZ Blower Motor hp Oil Pump Motor, hp No. 2 Oil Air Compressor Motor hp (Oil firing Only)

Refer to Tables A1-9 and A1-10 1/2

1/2

1/2

1/2

3/4

3/4

3/4

3/4

3/4

1

1

1

3

3

3

5

5

5

7-1/2

7-1/2

7-1/2

7-1/2

7-1/2

7-1/2

NOTES: A. Based on 140,000 Btu/gal.

A1-5 03-08

Promethean Series Model CB-LE

Firetube Boilers

RR/ RF/ RD

GG I

LL

II

D

K

L

FF

A B

EE

U/Y

H

X

OO O

P

E

DD

J

V

KK

Q

T

W

W F

N

C

G

M

Figure A1-1. CB-LE Steam - 125-200 HP

Table A1-3. Model CB-LE Steam Boiler Dimensions, 60” (15 - 150 psig Design Pressure) - Sheet 1 of 2

BOILER HP

DIM

125

150

200

Overall (60 ppm System)

A

171-1/2

196-1/2

228-1/2

Overall (30 ppm System)

A

Overall (15- 30% annual wood capacity. 0.30 lb/MMBtu limit if > 30 MMBtu and < 30% annual wood capacity. Opacity limits and initial testing per above. 4. Oil Firing All units > 30 MMBtu subject to opacity limit, only residual oil firing must use CEMS. Initial performance testing required. REPORTING REQUIREMENTS Owners or operators of all affected units must submit information to the administrator, even if they are not subject to any emission limits or testing. Required reports include: Information on unit size, fuels, start-up dates and other equipment information. Initial performance test results, CEMS performance evaluation. Quarterly reports on SO2 and/or PM emission results, including variations from limits and corrective action taken. For fuel supplies certificate, information on supplies and details of sampling and testing for coal and residual oil. Records must be maintained for two years.

Figure E-14. Summary of Federal EPA Rules

E-20 03-08

Section A - Firetube boilers GENERAL INFORMATION pages A2-A10

PROMETHEAN BOILERS MODEL CB-LE (Dry-Back) 125-800 HP Low NOx (LE) and Ultra Low NOx (NT)

A1

PROMETHEAN BOILERS MODEL 4WI (Wet-Back) 100-800 HP Low NOx (LE) and Ultra Low NOx (NT)

A2

CRITERION BOILERS MODEL 4WG (Wet-Back) 100-800 HP Low NOx (LE)

A3

CRITERION BOILERS MODEL ICB (Intercooled Back) 100-800 HP Low NOx (LE) Available

A4

MODEL CBL (Wet-Back) 900-1800 HP Low NOx (LE)

A5

MODEL CB (Dry-Back) 15-100 HP

MODEL CBE (Dry-Back) 60-80 HP

MODEL CB OHIO SPECIAL (Dry-Back) 100-225 HP

MODEL CEW OHIO SPECIAL (Wet-Back) 100-225 HP

MODEL CBR (Dry-Back) 125-800 HP OPTIMIZED BOILER PACKAGE 03-08 BBA0_03-06

A6 A7 A8 A9 A10 A11 A-1

Firetube Boilers

FEATURES AND BENEFITS The Cleaver-Brooks line of firetube boilers include the following features and benefits: Packaged Design with Integral Front Head:

• Integral front head provides proper burner/boiler compatibility for maximum efficiency and ease of maintenance. • Packaged boiler is factory assembled, wired, and tested for guaranteed performance and reliability. • Packaged design allows for easy connection of utilities, minimum start-up requirements, and lower long-term operational requirements. • Built and tested to ASME standards. • Fully UL cUL approved package.

Single Point Positioning Combustion Control Package:

• Accurate, repeatable combustion control for responsiveness to load swings. • Single point linkage assembly for air and fuel simplifies adjustments and reduces start-up and maintenance costs. • Unique variable contour.cam assembly allows accurate adjustment and enhances safe operation of the boiler. • Micro-Processor based burner control provides accurate sequencing and continuous monitoring for optimum safety, efficiency, and reliability.

Low Stack Temperatures:

• Guaranteed efficiency (Promethean) at 25, 50, 75 and 100% firing rate.

Low Excess Air:

• Operates at 3% O2 with less than 200 ppm CO for maximum combustion efficiency.

• Reduced fuel and operating costs.

• High efficiency and low maintenance requirements. High Steam Quality:

• Large steam space and liberal surface area ensure high steam quality, free from entrained particles of moisture (98.5% dry).

Quiet Operation:

• Integral front head with vibration free combustion air fan provides quiet operation. • Ideal for sound critical applications, like hospitals and schools. • Heavy duty motor with direct drive, maintenance free, case-less fan. • Integral forced draft fan diminishes the need for: Large diameter breeching. High chimneys. Induced draft fans. Barometric dampers. Sequencing draft controls.

Thick Fiberglass Insulation:

• 2" insulation covered with sturdy sheet metal lagging provides maximum efficiency and durable construction. • All units finished with hard enamel paint coating.

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Firetube Boilers Customer Service and Support:

• Boiler start-up, final adjustment, and operator training provided with all firetube boilers. • Emergency service response 24 hours a day, 7 days a week, from the industry’s most advanced worldwide computerized parts/service distribution network. • Largest network of factory trained technicians provide: System trouble shooting. Operator training. Customized factory-backed planned maintenance programs. Total after-sale support.

PRODUCT OFFERING The firetube product offering is available in the following models.

The Promethean Boiler Model CB-LE 125-800 HP is also a firetube product offering with the integral burner and low NOx emission. •Four-pass dryback design. •125-800 hp. •150-300 psig high pressure steam. •15 psig low pressure steam. •30 or 125 psig hot water. •Natural gas, light oil, or heavy oil firing. •Gas - NOx reductions options 60, 30 ppm (LE), 15-