a7 cbe cleaver

8/3/2019 A7 CBE Cleaver

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A7-1

03-08

CONTENTS

FEATURES AND BENEFITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-3

Three-Pass Dryback Design: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-3

Five Square Feet of Heating Surface per Boiler Horsepower: . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-3Low Furnace Location: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-3

Front and Rear Doors: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-3

Natural Gas, No. 2 Oil, or Combination Burners Available: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-3

PRODUCT OFFERING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-3

Boiler Options: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-3

Burner/Control Options: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-4

Fuel Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-4

DIMENSIONS AND RATINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-4

PERFORMANCE DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-13

ENGINEERING DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-13

Boiler Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-13Blowdown Water Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-13

Sound Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-13

Burner/Control Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-15

Burner Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-15

Gas Fired - Burners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-15

Fuel Connections - Gas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-15

Fuel Connections - Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-15

Section A7

Model CBE Boilers

60-80 HP


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Model CBE Boilers 60-80 HP Section A7

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03-08

Boiler Room Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-20

Stack Support Capabilit ies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-20

Boiler Room Combustion Air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-20

Stack/Breeching Size Criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-20

Sample Specifications - Steam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-23

Sample Specifications - Hot Water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-29

ILLUSTRATIONS

Figure A7-1. Model CBE Steam Boiler Dimensions (Page 1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . A7-7

Figure A7-2. Model CBE Hot Water Boiler Dimensions (Page 1 of 2) . . . . . . . . . . . . . . . . . . . . . . A7-9

Figure A7-3. Space Required to Open Rear Head on Model CBE Boilers Equipped with Davits . . . . A7-11

Figure A7-4. Model CBE Boilers Lifting Lug Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-11

Figure A7-5. Model CBE Boiler Mounting Piers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-12

Figure A7-6. Typical Fuel Oil Supply Arrangement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-19

Figure A7-7. Boiler Room Length (Typical Layouts) - Model CBE . . . . . . . . . . . . . . . . . . . . . . . . . A7-21

Figure A7-8. Boiler Room Width (Typical Layout) - Model CBE . . . . . . . . . . . . . . . . . . . . . . . . . . A7-22

TABLES

Table A7-1. Model CBE Steam Boiler Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-6

Table A7-2. Model CBE Hot Water Boiler Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-6

Table A7-3. Heating Surface, Model CBE Boilers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-14

Table A7-4. Model CBE Steam Volume and Disengaging Area . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-14

Table A7-5. Model CBE Steam Boiler Safety Valve Openings . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-14

Table A7-6. Model CBE Hot Water Boiler Relief Valve Openings . . . . . . . . . . . . . . . . . . . . . . . . . A7-16

Table A7-7. Model CBE Recommended Steam Nozzle Size(To Maintain 4000 to 5000 fpm Nozzle Velocity) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-16

Table A7-8. Model CBE Blowdown Tank Sizing Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-17Table A7-9. Sound Pressure Levels in DbA (Profire F) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-17

Table A7-10. Model CBE Burner Selections(Profire Burner) . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-18

Table A7-11. Minimum Required Gas Pressure Alti tude Conversion . . . . . . . . . . . . . . . . . . . . . . . A7-18

Table A7-12. Maximum Gas Consumption (CFH) for Natural Gas - Model CBE . . . . . . . . . . . . . . . A7-18

Table A7-13. Minimum Required Gas Pressure at Entrance to Standard, FM and IRI Gas Trains -Model CBE (Upstream of Gas Pressure Regulator) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-19

The following information applies to the Cleaver-Brooks Model CBE Boiler.


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Section A7 Model CBE Boilers 60-80 HP

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03-08

FEATURES AND BENEFITS

The Model CBE Boiler is available as a baseline alternative to the Cleaver-BrooksModels CB Boilers. The Cleaver-Brooks Model CBE Boiler line provides a qualityproduct utilizing an economical boiler/burner design. Additionally, the boiler/burnerpackaged UL and cUL label is available on all CBE sizes. The following features

apply:Three-Pass Dryback Design:

Three-pass design provides high flue gas velocities and low stack temperaturesto maximize efficiency.

Dryback design provides full access to boiler tubes, tube sheet, and furnace forease of maintenance.

Dryback design includes single rear tube sheet construction, which reduces tubesheet stresses.

Five Square Feet of Heating Surface per Boiler Horsepower:

Good boiler efficiency.

Long boiler life.

Low Furnace Location:

Furnace located well below water level with generous clearance from bottom ofboiler, allowing proper circulation.

Low furnace provides additional safety margin between furnace and water level.

Reduces water carryover, producing drier steam.

Front and Rear Doors:

Davit, front and rear doors, all sizes.

Provides access to front and rear tube sheet and furnace.

Reduced maintenance costs.

Natural Gas, No. 2 Oil, or Combination Burners Available:

Natural gas or No. 2 oil compatibility.

Fuel changeover without burner adjustment.

PRODUCT OFFERING

Cleaver-Brooks Firetube Boilers are available in low pressure steam, high pressuresteam, and hot water designs. Burners are available to fire natural gas, No. 2 oil, ora combination of oil and gas. The CBE boiler is:

60 - 80 hp.

30 and 125 psig hot water.

15 - 300 psig steam.

Full modulation, all sizes.

Available options include the following (contact your local Cleaver-Brooks authorizedrepresentative for option details).


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A7-4

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Boiler Options: Drain valves.

Additional screwed or flanged trappings.

Blowdown valves.

Non-return valves.

Feedwater valves and regulators.

Surface blowdown systems

Combustion relief door.

Blend pump.

Surge load baffles.

Seismic design.

Burner/ControlOptions:

Flame safeguard controllers.

Lead/lag system.

High altitude design (up to 10,000 ft).

Special insurance and code requirements (e.g., IRI, FM, CSD1).

Alarm bell/silence switch.

Special motor requirements (TEFC, high efficiency).

Special purpose indicator lights.

Main disconnect.

Elapsed time meter.

Voltmeter/micro-ammeter.

NEMA enclosures.

Low-fire hold control.

Remote emergency shut-off (115V).

Circuit breaker.

Day/night controls.

Special power requirements.

Stack thermometer.

Special indicating lights.

Fuel Options Gas strainer.

Gas pressure gauge.

Future gas conversion.


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DIMENSIONS AND RATINGS

Dimensions and ratings for the Model CBE Boilers are shown in the following tablesand illustrations.

Table A7-1 Model CBE Steam Boiler Ratings

Table A7-2 Model CBE Hot Water Boiler Ratings

Figure A7-1 Model CBE Boiler Dimensions

Figure A7-2 Model CBE Steam Boiler Dimensions

Figure A7-3 Model CBE Boiler Space Requirements to Open Rear Door

Figure A7-4 Lifting Lug Location, Model CBE Boilers

Figure A7-5 Model CBE Boiler Mounting Piers


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BOILER HP 60 70 80

RATINGS - SEA LEVEL TO 1000 FT

Rated Capacity (lbs/steam/hr at

212 F)

2070 2415 2760

Btu Output (1000 Btu/hr) 2009 2343 2678

APPROXIMATE FUEL CONSUMPTION AT RATED CAPACITY

Light Oil GPH (140,000 Btu/gal) 18 21 24

Gas CFH (1000 Btu) 2510 2930 3350

Gas (Therm/hr) 25.1 29.3 33.5

POWER REQUIREMENTS SEA LEVEL TO 1000 FT (60 HZ)

Oil Pump Motor hp (No. 2 oil) * * *

Blower Motor - Series 100/200 3/4 3/4 1

Blower Motor - Series 700 3/4 1/2 3/4

Air Compressor Motor ** ** **

BOILER DATA

Heating Surface sq-ft (Fireside) 300 350 400

* Integral oil pump.

**No air compressor required (pressure atomized)

NOTE: All fractional hp motors will be single phase voltage; integral hp motors

will be three-phase voltage.

BOILER HP 60 70 80

RATINGS SEA LEVEL TO 1000 FT

Btu Output (1000 Btu/hr) 2009 2343 2678

APPROXIMATE FUEL CONSUMPTION AT RATED CAPACITY

Light Oil gph (140,000 Btu/gal) 18 21 24

Gas CFH (1000 Btu) 2510 2930 3350

Gas (Therm/hr) 25.1 29.3 33.5

POWER REQUIREMENTS SEA LEVEL TO 1000 FT (60 HZ)

Oil Pump Motor hp (No. 2 oil) * * *

Blower Motor - Series 100/200 3/4 3/4 1Blower Motor - Series 700 3/4 1/2 3/4

Air Compressor Motor ** * * **

BOILER DATA

Heating Surface sq-ft (Fireside) 300 350 400

* Integral oil pump.

**No air compressor required (pressure atomized)

NOTE: All fractional hp motors will be single phase voltage; integral hp motors

will be three-phase voltage.

Table A7-1. Model CBE Steam Boiler Ratings

Table A7-2. Model CBE Hot Water Boiler Ratings


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Figure A7-1. Model CBE Steam Boiler Dimensions (Page 1 of 2)

DD

W X S R W

U V Y

HH

JJ

GG

A

T

L

O

M

N

DQ

K

I

LL B

E

H

AAP

J

C

F GFF

BOILER HP DIM 60 70 80

LENGTHS

Overall Length A 163-1/8 186-1/16 201-1/16

Shell Length B 123-5/8 141-5/8 157-5/8

Base Frame Length C 133-3/8 152-3/8 173-9/16

Rear Head Extension E 7-7/8 7-7/8 7-7/8

Front Flange To Steam Outlet F 49-1/4 60-1/4 70-1/4

Steam Outlet To Vent Outlet G 65-1/2 72-1/2 78-1/2

Base Frame To Rear Head H 22-1/4 22-1/4 22-1/4

WIDTHS

Overall Width I 73 73 73

Boiler Centerline To Water

Column

K 39 39 39

Boiler Centerline To Lagging L 26-1/2 26-1/2 26-1/2

Boiler Centerline To Aux. Water Column LL 34 34 34

Base Outside M 37-3/4 37-3/4 37-3/4

Base Inside N 29-3/4 29-3/4 29-3/4


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Figure A7-1. Model CBE Steam Boiler Dimensions (Page 2 of 2)

HEIGHTS

Base To Boiler Centerline D 40 40 40

Boiler ID J 48 48 48

Base To Vent Outlet O 70-1/4 70-1/4 70-1/4

Base To Steam Outlet (15 psig) P 70-1/4 70-1/4 70-1/4

Base To Steam Outlet (150 psig) P 67-7/8 67-7/8 67-7/8

Base Frame Q 12 12 12

Base To Rear Davit T 72-5/8 72-5/8 72-5/8

Base To Lifting Lug AA 68-3/4 68-3/4 68-3/4

CONNECTIONS

Chemical Feed R 1 1 1

Feedwater Inlet (Both Sides) S 1-1/4 1-1/4 1-1/4

Surface Blowoff (150 psig Only) V 1 1 1

Steam Outlet (15 psig) U 6 A 6 A 6A

Steam Outlet (150 psig) U 3 3 3

Vent Outlet ID Y 10 12 12

Boiler Blowdown (36 Dia Only) X - - -

Boiler Blowdown (15 psig) W 1-1/4 1-1/2 1-1/2

Boiler Blowdown (150 psig) W 1-1/4 1-1/4 1-1/4

MISCELLANEOUS

Door Swing (Rear Minimum) DD 30 30 30

Tube Removal Rear FF 82 100 109

Tube Removal Front GG 90 108 124

Min. Boiler Room Length For Tube Removal

Front

HH 244 280 312

Min. Boiler Room Length For Tube Removal

RearCJJ 287 327 352

WEIGHTS

Normal Water Weight - 3940 4720 5375

Shipping Weight (15 psig) - 6455 7220 7715



NOTES:1. All connections are threaded, except as noted.

2. Manway included on 125 - 350 hp.A. 150 psig Flange.

B. 300 psig Flange.C. Includes 4-foot clearance in front of boiler.



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LENGTHS

Overall Length A 163-1/8 186-1/16 201-1/16

Shell Length B 123-5/8 141-5/8 157-5/8

Rear Frame Length C 133-3/8 152-3/8 173-9/16

Rear Head Extension E 7-7/8 7-7/8 7-7/8

Front Flange To Water Return F 70-1/4 88-1/4 104-1/4

Water Return To Water Supply G 24 24 24

Base Frame To Rear Head H 22-1/4 22-1/4 22-1/4

Water Supply To Vent Outlet R 20-1/2 20-1/2 20-1/2

WIDTHS

Overall Width I 53 53 53

Boiler Centerline To Lagging L 26-1/2 26-1/2 26-1/2

Base Outside M 37-3/4 37-3/4 37-3/4

Base Inside N 29-3/4 29-3/4 29-3/4

W X S

V U U

W

Y

DD

HH

JJ

GG

TO

L

N

M

DQ

IK

B

A

H

E

AAP

J

C

F G RFF

Figure A7-2. Model CBE Hot Water Boiler Dimensions (Page 1 of 2)


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HEIGHTS

Base To Boiler Centerline D 40 40 40

Boiler ID J 48 48 48

Base To Vent Outlet O 70-1/4 70-1/4 70-1/4

Base To Supply & Return Ports (30 & 125 psig) P 62-1/4 62-1/4 62-1/4

Base To Supply And Return Ports (150 psig) P 70-1/4 70-1/4 70-1/4

Base Frame Q 12 12 12

Base To Rear Davit T 72-5/8 72-5/8 72-5/8

Base To Lifting Lug AA 68-3/4 68-3/4 68-3/4

CONNECTIONS

Waterfill (Both Sides) S 1-1/4 1-1/4 1-1/4

Air Vent V 1-1/4 1-1/4 1-1/4

Hot Water Supply & Return(30 & 125 psig)

U 4 4 4

Hot Water Supply & Return (150 psig) U 4 B 4 B 4 B

Vent Outlet ID Y 10 12 12

Boiler Drain W 1-1/4 1-1/2 1-1/2

Boiler Drain X

MISCELLANEOUS

Door Swing (Minimum Rear) DD 30 30 30

Tube Removal Rear FF 82 100 109Tube Removal Front GG 90 108 124

Min. Boiler Room Length For Tube Removal Front HH 244 280 312

Min. Boiler Room Length For Tube Removal RearC JJ 287 327 352

WEIGHTS

Normal Water Weight (lbs) - 4340 5195 5920


Shipping Weight (125 psig - 6705 7740 8420

NOTES:

1. All connections are threaded, except as noted.2. Manway included on 125 - 350 hp.

A. 150 psig flange.B. 300 psig flange.

C. Includes 4 foot clearance in front of boiler.


Figure A7-2. Model CBE Hot Water Boiler Dimensions (Page 2 of 2)


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A7-11

03-08

BOILER HP DIMENSION (INCHES)

A B C D E

60 thru 100 27 45 38 61 30

Figure A7-4. Model CBE Boilers Lifting Lug Location

Figure A7-3. Space Required to Open Rear Head on Model CBE Boilers Equipped with Davits

BOILER HP ALL DIMENSIONS IN INCHES

A B C D E

60 68 14 187 10 2-1/2

70 68 14 105 10 2-1/280 68 14 121 10 2-1/2

NOTE: A, B and C Dimensions may vary by 1/2 inch.

A

DD NEAR SIDE FAR SIDE E (DIA OF HOLE)

B C


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BOILER HP A B C D E F G X

60 6 8 137 25-3/4 41-3/4 4 29-5/8 8

70 6 8 156 25-3/4 41-3/4 4 29-5/8 8

80 6 8 177 25-3/4 41-3/4 4 29-5/8 8

NOTE:1. All numbers in table are in inches.2. 6-inch high mounting piers recommended for use beneath the boiler base frame. The use ofthese piers provides increased inspection accessibility to the piping beneath the boiler and add-ed height for washing down the area beneath the boiler.

Figure A7-5. Model CBE Boiler Mounting Piers

A F

G

F

B BD

E

CX


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03-08

PERFORMANCE DATAContact your local Cleaver-Brooks authorized representative for emissions or additional infor-mation.

ENGINEERING DATA

The following engineering information is provided for Model CBE Firetube Boilers. Additionaldetail is available from your local Cleaver-Brooks authorized representative.

Boiler Information Table A7-3 shows heating surfaces for model CBE Firetube boilers.

Table A7-4shows steam volume and disengaging area for model CBE Firetube boilers.

Table A7-5 lists quantity and outlet size for safety valves supplied on Model CBE steam boil-ers.

Table A7-6 lists quantity and outlet size for relief valves supplied on Model CBE hot water

boilers.

Table A7-7 gives recommended steam nozzle sizes based on 4000-5000 fpm steam velocity

on Model CBE Boilers.

Blowdown WaterRequirements

Some local codes require blowdown tanks to be constructed in accordance with recommen-dations of the National Board of Boiler and Pressure Vessel Inspectors.

The National Boards recommendations base the size of the blowdown tank on the removalof at least 4 inches of water from the boiler.

Table A7-8 lists the approximate quantity of water represented by 4 inches of water at nor-mal operating level for Cleaver-Brooks Power Boilers.

Sound Level Table A7-9 summarizes predicted sound pressure levels for Model CBE Boilers. These valuesare based on standard motors. Optional motor types and altitude conditions can increase

sound levels.

Units

The units for the sound level tables are dBA (decibels, measured on the A-weighted scale) inreference to 0.0002 microbars (20 micro-Newtons per square meter). They are standardly

referenced in specifying and reporting sound pressure levels on industrial equipment.

Test Method

The sound pressure levels in the above table were obtained from tests in accordance withthe "ABMA Test Code for the Measurement of Sound from Packages Boilers." In accordance

with this code, the sound pressure levels reported were measured on the boiler centerline 4-1/2 feet vertically above the bottom of the base rails and 3 feet horizontally in front of the

end of the blower motor or front surface of the electrical cabinet.

Sound Level Meter

The sound level meter used complies with ANSI S1.4, Type 1 (Precision). The readings are

taken with the meter set for slow response.


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VALVESETTING

15 PSIG STEAM 100 PSIG STEAM 125 PSIG STEAM 150 PSIG STEAM 200 PSIG STEAM 250 PSIG STEAM

BOILERHP

NO. OFVALVES-REQ'D

OUTLETSIZE(IN.)

NO. OFVALVES-REQ'D

OUTLETSIZE(IN.)

NO. OFVALVESREQ'D

OUTLETSIZE(IN.)

NO. OFVALVES-REQ'D

OUTLETSIZE(IN.)

NO. OFVALVES-REQ'D

OUTLETSIZE(IN.)

NO. OFVALVESREQ'D

OUTLETSIZE(IN.)

60 1 2 1 1-1/2 1 1-1/2 1 1-1/4 1 1-1/4 1 1

70 1 2 1 2 1 1-1/2 1 1-1/2 1 1-1/4 1 1-1/4

80 1 2-1/2 1 2 1 1-1/2 1 1-1/2 1 1-1/4 1 1-1/4

NOTE:1.Valve manufacturers are Kunkle, Consolidated or Conbraco, depending on availability.

BOILER HP HEATING SURFACE (SQ-FT)

FIRESIDE WATERSIDE

60 300 322

70 350 376

80 400 429

Table A7-3. Heating Surface, Model CBE Boilers

BOILER HP STEAM VOLUME (CU-FT) STEAM RELIEVING AREA (SQ-IN)

HIGH PRESSUREA

LOW PRESSUREB

HIGH PRESSUREA

LOW PRESSUREB

60 6.39 12.92 2936 3588

70 7.58 15.35 3486 4261

80 8.65 17.50 3974 4859

NOTE:1. Based on normal water level.2. Values are based on standard controls. Optional controls may result in different values.A. Based on 150 psig design pressure.B. Based on 15 psig design pressure.

Table A7-4. Model CBE Steam Volume and Disengaging Area

Table A7-5. Model CBE Steam Boiler Safety Valve Openings


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03-08

Burner/ControlInformation

Burner CharacteristicsBurner information is shown in Table A7-10. Note that the model selection may vary for

actual application factors (altitude, gas pressure, etc.).

Gas Fired - BurnersTable A7-11 shows conversion factors for gas pressure at elevations over 700 ft above sealevel.

Table A7-12 shows maximum gas consumption (CFH) for Natural Gas.

Table A7-13 shows minimum and maximum gas pressure requirements for Standard, FM

and IRI CBE Boiler gas trains.

For oversized or undersized gas trains or altitude above 1,000 feet, contact your local

Cleaver-Brooks authorized representative.

Fuel Connections - GasThe local gas company should be consulted for requirements and authorization for installa-tion and inspection of gas supply piping. Installation of gas supply piping and venting must

be in accordance with all applicable engineering guidelines and regulatory codes. All con-nections made to the boiler should be arranged so that all components remain accessible for

inspection, cleaning and maintenance.

A drip leg should be installed in the supply piping before the connection to the gas pressure

regulator. The drip leg should be at least as large as the inlet fitting supplied with the boiler.Consideration must be given to both volume and pressure requirements when choosing gas

supply piping size. Refer to the boiler dimension diagram provided by Cleaver-Brooks for theparticular installation. Connections to the burner gas train should be made with a union, so

that gas train components or the burner may be easily disconnected for inspection or ser-vice. Upon completion of the gas piping installation, the system should be checked for gasleakage and tight shutoff of all valves.

Fuel Connections - OilOil-fired burners are equipped with an oil pump, which draws fuel from a storage tank and

supplies pressurized oil to the burner nozzle(s). The burner supply oil pump has a greater

capacity than the burner requires for the maximum firing rate. Fuel not delivered to the noz-zle is returned to the storage tank. A two-pipe (supply and return) oil system is recom-mended for all installations. Figure A7-6 shows a typical fuel oil supply arrangement. Oil

lines must be sized for the burner and burner supply oil pump capacities.

The burner supply oil pump suction should not exceed 10" Hg. If a transfer pump is used, it

must have a pumping capacity at least equal to that of the burner pump(s). Supply pressureto the burner pump should not exceed 3 psig.

A strainer must be installed in the supply piping upstream of the burner supply pump inorder to prevent entry of foreign material into the pump, fuel control valves, or burner noz-

zle(s). The strainer must be sized for the burner supply pump capacity. A strainer mesh of150 microns (0.005") is recommended.

Install a check valve in the line to prevent draining of the oil suction line when the burner isnot in operation. Location of the check valve varies with the system, but usually it is located

as close as possible to the storage tank.

Installation of a vacuum gauge in the burner supply line between the burner oil pump and

the strainer is recommended. Regular observation and recording of the gauge indication willassist in determining when the strainer needs servicing.

Upon completion of the oil piping installation, the system should be checked for oil or airleakage and tight shutoff of all valves.


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A7-16

03-08

VALVE SETTING 30 PSIG HW 60 PSIG HW 100 PSIG HW 125 PSIG HW

BOILER HP NO. OFVALVESREQ'D

OUTLETSIZE(IN.)

NO. OFVALVESREQ'D

OUTLETSIZE(IN.)

NO. OFVALVESREQ'D

OUTLETSIZE(IN.)

NO. OFVALVESREQ'D

OUTLETSIZE(IN.)

60 1 2 1 1-1/4 1 1 1 1

70 1 2 1 2 1 1-1/4 1 1

80 1 2 1 2 1 1-1/4 1 1-1/4

NOTES:1.Hot water relief valves are Kunkle # 537.

Table A7-6. Model CBE Hot Water Boiler Relief Valve Openings

BOILER HP

OPERATING PRESSURE PSIG 60 70 80

15 6 6 6

30 4 4 4

40 4 4 4

50 3 4 4

75 3 3 4

100 3 3 3

125 3 3 3

150 2.5 2.5 2.5

200 2.5 2.5 2.5

250 2 2 2

NOTES:1. Steam nozzle sizes given in inches.2. Recommended steam nozzle sizes based on 4000 to 5000fpm steam velocity. Spool pieces (300 psig flanges) are avail-able in the following sizes (in inches): 3x2-1/2x30, 4x3x30,6x4x36, 8x6x48, 10x8x48, and 12x8x48.

Table A7-7. Model CBE Recommended Steam Nozzle Size (To Maintain 4000 to 5000 fpm Nozzle Velocity)


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A7-17

03-08

BOILER HP 60 70 80

GAS

HIGH FIRE 77.0 75.0 76.5

LOW FIRE 78.0 74.0 76.5

NO. 2 OIL

HIGH FIRE 77.0 74.0 76.5

LOW FIRE 75.5 72.0 76.0

Table A7-9. Sound Pressure Levels in DbA (Profire F)

BOILER HP WATER (GAL)

60 51

70 60

80 69

NOTE: Quantity of water removed from boiler by low-ering normal water line 4"

Table A7-8. Model CBE Blowdown Tank Sizing

Information


18/34


A7-18

03-08

BOILER HPMAX ALTITIUDE

(FT)

BURNER SIZE

60 2000 1

70 3500 2

80 1500 2

Table A7-10. Model CBE Burner Selections(Profire Burner)

ALTITUDE(FT)

CORRECTION FACTOR ALTITUDE(FT)

CORRECTION FACTOR

1000 1.04 6000 1.25

2000 1.07 7000 1.30

3000 1.11 8000 1.35

4000 1.16 9000 1.40

5000 1.21 - -

To obtain minimum required gas pressure at altitudes above 700 feet, multiply thepressure by the listed factors:inches WC x 0.577 = oz/sq-in. oz/sq-in x 1.732 = inches WC.i inches WC x 0.0361= psig. oz/sq-in x 0.0625 = psig.psig x 27.71 = Inches WC. psig x 16.0 = oz/sq-in.

Table A7-11. Minimum Required Gas Pressure Altitude Conversion

BOILER HP NATURAL GAS1000 (BTU/CU-FT)

60 2510

70 2930

80 3350

Table A7-12. Maximum Gas Consumption (CFH) for Natural Gas - Model CBE


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A7-19

03-08

Figure A7-6. Typical Fuel Oil Supply Arrangement

BOILER HPSTD PIPE

SIZE(Inches)

MAX 1 PSIG INLET, MIN SUPPLYPRESSURE (WC)

MAX 10 PSIG INLET** , MIN SUPPLYPRESSURE (WC)

UL FM IRI UL FM IRI

60 2* 11.0 11.0 11.5 13.0 13.0 13.5

70 2* 8.5 8.5 9.0 12.5 12.5 13.0

80 2* 11.0 11.0 11.5 14.5 14.5 15.0

* Gas pressure regulator is 1-1/2 inch.** Use max 10 psig for all boilers destined for Canada.

Table A7-13. Minimum Required Gas Pressure at Entrance to Standard, FM and IRI GasTrains - Model CBE (Upstream of Gas Pressure Regulator)


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A7-20

03-08

Boiler RoomInformation

Figure A7-7 shows typical boiler room length requirements.

Figure A7-8 shows typical boiler room width requirements.

Stack SupportCapabilities

60-80 hp Model CBE Boilers can support up to 1000 lbs without additional support.

Boiler Room

Combustion Air

When determining boiler room air requirements, the size of the room, air flow, and velocity

of air must be reviewed as follows:

1. Size (area) and location of air supply openings in boiler room.

A. Two (2) permanent air supply openings in the outer walls of the boiler room are

recommended. Locate (1) at each end of the boiler room, preferably below a height of7 feet. This allows air to sweep the length of the boiler.

B. Air supply openings can be louvered for weather protection, but they should not becovered with fine mesh wire, as this type of covering has poor air flow qualities and is

subject to clogging by dust or dirt.

C. A vent fan in the boiler room is not recommended, as it could create a slight vacuumunder certain conditions and cause variations in the quantity of combustion air. This

can result in unsatisfactory burner performance.D.Under no condition should the total area of the air supply openings be less than (1)

square foot.

E. Size the openings by using the formula:

Area (sq-ft) = CFM/FPM

2. Amount of air required (cfm).

A. Combustion Air = Rated bhp x 8 cfm/bhp.

B. Ventilation Air = Maximum bhp x 2 cfm/bhp

C. Total recommended air = 10 cfm/bhp - up to 1000 feet elevation. Add 3 percent more

per 1000 feet of added elevation.

3. Acceptable air velocity in Boiler Room (fpm).

A. From floor to (7) foot height - 250 fpm.

B. Above (7) foot height - 500 fpm.

Example: Determine the area of the boiler room air supply openings for (1) 80 hp boiler at

800 feet altitude. The air openings are to be 5 feet above floor level.

Air required: 80 x 10 = 800 cfm (from 2B above).

Air velocity: Up to 7 feet = 250 fpm (from 3 above).

Area Required: Area = cfm = 800/250 = 3.2 Sq-ft total.

Area/Opening: 3.2/2 = 1.6 sq-ft/opening (2 required).

NoticeConsult local codes, which may supersede these requirements.

Stack/BreechingSize Criteria

The design of the stack and breeching must provide the required draft at each boiler flue gasoutlet. Proper draft is critical to burner performance.

Although constant pressure at the flue gas outlet of the Model CBE is not required, it is nec-

essary to size the stack/breeching to limit flue gas pressure variation. The allowable pressurerange is 0.25" W.C. to + 0.25" W.C.


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A7-21

03-08

For additional information, please review Section I4, General Engineering Data (Stacks) andSection F, Stacks. Stack and breeching sizes should always be provided by a reputable stack

supplier who will design the stack and breeching system based on the above criteria. Yourlocal Cleaver-Brooks authorized representative is capable of assisting in your evaluation ofthe stack/breeching design.

Figure A7-7. Boiler Room Length (Typical Layouts) - Model CBE

FRONT

FEEDWATER

TANK

BOILER

FEEDWATER

PUMP

DRAIN

TRENCH

1. Shortest boiler room length (Dwg A) is obtained by allowing for possible future tube replacement(from front or rear of boiler) through a window or doorway. Allowance is only made for minimum doorswing at each end of the boiler. This arrangement provides sufficient aisle space at the front of theboiler but a tight space condition at the rear.If space permits, approximately 1.5 additional feet should be allowed at the rear for additional aisleand working space.2. Next shortest boiler room length (Dwg B) is obtained by allowing for possible future tube replace-ment from the front of the boiler. Allowance is only made for minimum door swing at the rear.If space permits, approximately 1.5 additional feet should be allowed at the rear for additional aisleand working space.

3. A slightly longer boiler room (Dwg C) is obtained by allowing for possible future tube replacementfrom the rear of the boiler. Allowance for door swing at the front provides sufficient aisle and working

space at the front.

Dwg A

Dwg BDwg C


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A7-22

03-08

BOILER HP 60-80

Dimension A (inches) 78

Dimension B (inches) 105

NOTES:1. Recommended Minimum Distance Between Boiler and Wall. Di-mension A allows for a clear 42" aisle between the watercolumn on the boiler and the wall. If space permits, this aisle should

be widened.2. Recommended Minimum Distance Between Boilers.

Dimension B between boilers allows for a clear aisle of:42" - 60-80 hpIf space permits, this aisle should be widened.

Figure A7-8. Boiler Room Width (Typical Layout) - Model CBE

A BFEEDWATER

TANK

BOILER

FEEDWATER

PUMP

DRAIN

TRENCH


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A7-23

03-08

Section A7

Model CBE Boilers

60-80 HP Steam 15-300 psig

Sample Specification

Boiler Characteristics (Steam) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-24

General Boiler Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-24

Steam Boiler Trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-25

Burner and Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-25

Control Panel and Flame Safeguard Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-27

Efficiency Guarantee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-27

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-27

Execution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-27
http://spec%20steam.pdf/http://spec%20steam.pdf/http://spec%20steam.pdf/http://spec%20steam.pdf/http://spec%20steam.pdf/http://spec%20steam.pdf/http://spec%20steam.pdf/http://spec%20steam.pdf/http://spec%20steam.pdf/http://spec%20steam.pdf/http://spec%20steam.pdf/http://spec%20steam.pdf/http://spec%20steam.pdf/http://spec%20steam.pdf/http://spec%20steam.pdf/http://spec%20steam.pdf/


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Model CBE Boilers Firetube Boilers

A7-24

03-08

MODEL CBE BOILERS

60-80 HP Steam 15-300 psig

The following sample specification are provided by Cleaver-Brooks to assist you in meeting yourcustomers specific needs and application.

The Sample Specifications are typically utilized as the base template for the complete boilerspecification. Contact your local Cleaver-Brooks authorized representative for information onspecial insurance requirements, special code requirements, optional equipment, or generalassistance in completing the specification.

PART 1 GENERAL

1.1 BOILER CHARACTERISTICS (STEAM)

A. The Steam Boiler shall be Cleaver-Brooks Model CBE, Fuel Series ______ (100,200, 700), _____ hp designed for _____ psig (15, 150, 200, or other psigsteam). The maximum operating pressure shall be _____ psig.

B. 1.2 The boiler shall have a maximum output of _____ Btu/hr, or _____horsepower when fired with CS 12-48 No. 2 oil and/or natural gas, _____ Btu/cu-ft. Electrical power available will be _____ Volt _____ Phase _____ Cycle and115/1/160 for the control circuit.

PART 2 PRODUCTS

2.1 GENERAL BOILER DESIGN

A. The boiler shall be a three pass horizontal firetube updraft boiler with five (5)square feet of heating surface per rated boiler horsepower. It shall be mountedon a heavy steel frame with forced draft burner and burner controls.

1. Approvals: Underwriters Laboratories Inc. The complete boiler package

shall be approved and listed as a unit by Underwriters Laboratories.

2. The boiler shall be completely preassembled and fire tested at the factory.The unit shall be ready for immediate mounting on floor or simplefoundation and ready for attachment of water, steam, fuel, electrical, ventand blowdown connections.

B. Boiler Shell (Steam)

1. The boiler shell must be constructed in accordance with ASME Boiler Codeand must receive authorized boiler inspection prior to shipment. A copy ofthe inspection report shall be furnished to the purchaser.

2. Two lifting eyes shall be located on top of the boiler.

3. Front and rear doors on the boiler shall be davited.

4. Refractory and insulation shall be contained in the rear smoke box anddoor; door shall swing open for inspection.

5. The boiler tubes shall not include turbulators, swirlers or other add-onappurtenances.

6. Front and rear tube sheets and all flues must be accessible for inspectionand cleaning when the doors are swung open. The boiler shall be furnishedwith adequate handholes to facilitate boiler inspection and cleaning.


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Firetube Boilers Model CBE Boilers

A7-25

03-08

7. The exhaust gas vent shall be located near the rear of the boiler on the topcenter line and shall be capable of supporting:

60-80 hp. 1000 lbs

8. Observation ports for the inspection of flame conditions shall be providedat each end of the boiler.

9. The boiler insulation shall consist of a 2 inch blanket under a sectionalpreformed sheet metal lagging. This insulation must be readily removableand capable of being reinstalled, if required.

10. The entire boiler based frame and other components shall be factorypainted before shipment using a hard finished enamel coating.

2.2 Steam Boiler Trim

A. Water ColumnA water column shall be located on the right hand side of the boiler completewith gauge glass set and water column blowdown valves.

1. Feedwater Pump ControlThe boiler feedwater pump control shall be included as an integral part of

the water column to automatically actuate a motor driven feed water pumpmaintaining the boiler water level within normal limits.

2. Low Water CutoffThe low water cutoff shall be included as an integral part of the boilerfeedwater control wired into the burner control circuit to prevent burneroperation if the boiler water level falls below a safe level.

B. Auxiliary Low Water CutoffAuxiliary low water cutoff manual reset shall be included, piped to the vessel,and wired to the burner control circuit. A manual reset device shall be used onthis control.

C. Steam Pressure GaugeThe steam pressure gauge shall be located at the front of the boiler and include

cock and test connection.D. Safety Relief Valves

Safety valves of a type and size to comply with ASME Code requirements shallbe shipped loose.

E. Steam Pressure ControlsThe steam pressure controls to regulate burner operation shall be mounted nearthe water column.

2.3 Burner and Controls

A. Mode of OperationBurner operation shall be the full modulation principle. The burner shall alwaysreturn to low fire position for ignition.

B. Blower1. All air for combustion shall be supplied by a forced draft blower mounted

on the burner, to eliminate vibration and reduce noise level.

2. Maximum sound level of the boiler/burner package shall not exceed _____dbA (when measured in accordance with ABMA Sound Test Standards).


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Model CBE Boilers Firetube Boilers

A7-26

03-08

C. Combustion Air ControlCombustion air damper and fuel control valve shall be operated by a singledamper control motor that regulates the flame according to load demand.Potentiometer type position controls shall be provided to regulate operation ofthe damper control motor.

D. Fuel Specification and Piping

Select one of the following fuel types:1. Fuel series 700 - Gas fired.

2. Fuel series 100 - Light oil (No. 2) fired.

3. Fuel series 200 - Light oil or gas fired.

Fuel Series 700 - Gas Fired

Fuel Series 100 - Light oil (No. 2) fired.

Fuel Series 200 - Light oil or gas fired.

a. Burner Type - The burner shall be mounted at the front of the boilerand be of high radiant multi-port type for gas. The burner shall beapproved for operation on natural gas fuel.

b. Gas Pilot - The gas pilot shall be a premix type with automatic electricignition. An electronic detector shall monitor the pilot so that theprimary gas valve cannot open until pilot flame has been established.The pilot train shall include one (1) shut-off valve, solenoid valve,pressure regulator, and one (1) plugged leakage test connection(Canada only).

c. Gas Burner Piping60-80 hp. Gas burner piping on all units shall include two (2) manualshut-off valves, gas pressure regulator, one (1) motorized gas valvewith proof of closure switch, two (2) plugged leakage testconnections, and high and low gas pressure switches. The gas valveshall be wired to close automatically in the event of power failure,

flame failure, low water, or any abnormal shutdown condition.4. Fuel Series 100 - Light Oil Fired

a. Burner Type - The burner shall be mounted at the front of the boiler,and shall be approved for operation with CS12-48, Commercial No. 2oil.

b. Ignition System - Select one of the following:60-80 hp. The burner shall employ a direct spark ignition system. Ahigh voltage spark generated by a transformer shall be used to ignitethe main burner.

c. Oil Pump - An oil pump with the capacity of approximately twice themaximum burning rate shall be included.Pump shall be an integral part of the burner and mechanically driven.60 to 80 hp. Fuel oil piping on the unit shall include oil pressureregulating device, oil metering controls, two (2) solenoid oil shut-offvalves, and pressure gauge all integrally mounted on the unit.

Oil Atomization Type-Select one of the following:

d. 60-80 hp. Burner shall include a complete mechanical oil atomizingsystem and be of the pressure atomizing type.


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Firetube Boilers Model CBE Boilers

A7-27

03-08

e. 60-80 hp. The burner, mounted at the front of the boiler, shall be acombination pressure atomizing type for oil and high radiant multi-port type for gas. The burner shall be approved for operation witheither CS12-48 Commercial No. 2 oil or natural gas.

60-80 hp. Pump shall be an integral part of the burner andmechanically driven.

1) Oil Burner Piping - Select one of the following:60-200 hp. Fuel oil piping on the unit shall include oil pressureregulating device, oil metering controls, two (2) solenoid oilshut-off valves, and pressure gauge all integrally mounted on theunit.

2) Oil Atomization Type - Select one of the following:

60-80 hp. Burner shall include a complete mechanical oil atomizingsystem and be of the pressure atomizing type.

5. Gas Burner Piping:60-80 hp. Gas burner piping on all units shall include two (2) manualshut-off valves, gas pressure regulator, one (1) motorized gas valve with

proof of closure switch, two (2) plugged leakage test connection, and highand low gas pressure switches. The gas valves shall be wired to closeautomatically in the event of power failure, flame failure, low water, or anyabnormal shutdown condition.

2.4 Control Panel and Flame Safeguard Controller

A. Control PanelA factory prewired control panel shall be supplied with the boiler-burnerpackage. Panel may be mounted on the burner or boiler.

B. The panel will have a NEMA 1A rating and contain the flame safeguardcontroller, burner motor starter, control circuit fuse, selector switches, indicatinglight and terminal strips. Lights shall indicate load demand, 80 hp. The panelshall contain a control circuit transformer and fuse protection.

C. The flame safeguard controller shall be a CB110 flame monitor with EPD170program module. Flame detector shall be ultra-violet type.

2.5 Efficiency Guarantee

A. The boiler must be guaranteed to operate at a minimum fuel-to-steam efficiencyof ____ percent at 100 percent of rating when burning natural gas and ________fuel-to-steam efficiency at 100% firing rate when burning oil (Contact your localCleaver-Brooks authorized representative for efficiency details).

PART 3 EXECUTION

3.1 WARRANTY

A. All equipment is to be guaranteed against defects in materials and/orworkmanship for a period of 12 months from date of start-up or 18 months fromdate of shipment, whichever comes first.

3.2 Execution

1. Shop Tests

2. The packaged boiler must receive factory tests to check the construction,controls, and operation of the unit. All tests may be witnessed by thepurchaser, if desired.


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Model CBE Boilers Section A

A7-28

03-08

B. Start-up Service

1. After boiler installation is completed, the manufacturer shall provide theservices of a field representative for starting the unit and training theoperator at no additional costs.

a. A factory approved and authorized start-up report shall be submittedto the customer/user at the time of start-up.


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A7-29

03-08

Section A7

Model CBE Hot Water Boiler

(60-350 hp, 30 psig, 125 psig)

Sample Specification

Boiler Characteristics (Hot Water) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-30

General Boiler Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-30

Hot Water Boiler Trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-31

Burner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-31

Efficiency Guarantee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-33

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7-33
http://spec%20hot%20water.pdf/http://spec%20hot%20water.pdf/http://spec%20hot%20water.pdf/http://spec%20hot%20water.pdf/http://spec%20hot%20water.pdf/http://spec%20hot%20water.pdf/http://spec%20hot%20water.pdf/http://spec%20hot%20water.pdf/http://spec%20hot%20water.pdf/http://spec%20hot%20water.pdf/http://spec%20hot%20water.pdf/http://spec%20hot%20water.pdf/


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Model CBE Hot Water Boiler Section A7

A7-30

03-08

Model CBE Hot Water Boiler (60-350 hp, 30 psig, 125 psig)

PART 1 GENERAL

1.01 BOILER CHARACTERISTICS (HOT WATER)

A. The Hot Water Boiler shall be Cleaver-Brooks Model CBE, Fuel Series ______

(100, 200, 700), _____ hp designed for _____ psig (30, 125, or other psighot water). The maximum water temperature will be _____ degree F, and themaximum system temperature drop wil l be _____ degree F.

B. The boiler shall have a maximum output of _____ Btu/hr, or _____ horsepowerwhen fired with CS 12-48 No. 2 oil and/or natural gas, _____ Btu/cu-ft.Electrical power available will be _____ Volt _____ Phase _____ Cycle and115/1/160 for the control circuit.

PART 2 PRODUCTS

1.02 General Boiler Design

A. The boiler shall be a three pass horizontal firetube updraft boiler with five (5)square feet of heating surface per rated boiler horsepower. It shall be mounted

on a heavy steel frame with forced draft burner and burner controls.

1. Approvals: Underwriters Laboratories Inc. The complete boiler packageshall be approved and listed as a unit by Underwriters Laboratories.

2. The boiler shall be completely preassembled and fire tested at the factory.The unit shall be ready for immediate mounting on floor or simplefoundation and ready for attachment of water, steam, fuel, electrical, ventand blowdown connections.

B. Boiler Shell (Hot Water)

1. The boiler shell must be constructed in accordance with ASME BoilerCode and must receive authorized boiler inspection prior to shipment. Acopy of the inspection report shall be furnished to the purchaser.

2. The hot water return and outlet connections shall be located on the topcenter line of the boiler. The boiler shall be designated to rapidly mix thereturn water with the boiler water. Forced internal circulation shall beused.

3. A dip tube shall be included as an integral part of the water outlet.

4. Two lifting eyes shall be located on top of the boiler.

5. Front and rear doors on the boiler shall be davited. Doors are to be sealedwith Kaowool gaskets and fastened tightly using heavy capscrews thatthread into replaceable brass nuts.

6. Refractory and insulation shall be contained in the rear smoke box anddoor; door shall swing open for inspection.

7. The boiler tubes shall not include turbulators, swirlers or other add-onappurtenances.

8. Front and rear tube sheets and all flues must be fully accessible forinspection and cleaning when the doors are swung open. The shell mustbe furnished with adequate handholes to facilitate boiler inspection andcleaning.

9. For boilers over 100 horsepower, a manhole shall be provided.

10. The exhaust gas vent shall be located near the rear of the boiler on thetop center line and shall be capable of supporting:


31/34

Section A7 Model CBE Hot Water Boiler

A7-31

03-08

60-100 hp. 1000 lbs.

11. Observation ports for the inspection of flame conditions shall be providedat each end of the boiler.

12. The boiler insulation shall consist of a 2 inch blanket under a sectionalpreformed sheet metal lagging. This insulation must be readily removableand capable of being reinstalled, if required.

13. The entire boiler based frame and other components shall be factorypainted before shipment using a hand finished enamel coating.

1.03 Hot Water Boiler Trim

A. Hot Water Connections

The hot water outlet and return connections shall be located on the top center line of theboiler. The internal design of these connections shall provide forced internal circulation, mixingreturn water with the hot water within the boiler.

B. 3.2 Dip Tube

The dip tube, an integral part of the hot water outlet, and an air vent tapping in the boiler shellmust be provided for removal of entrained air.

C. Low Water Cutoff

A low water cutoff control (manual reset) shall be mounted on the top centerline of the boilerwired into the burner control circuit to prevent burner operation if boiler water falls below asafe level. A manual reset device shall be used on this control.

D. Pressure and Temperature Gauges

Pressure and temperature gauges shall be mounted on the boiler with temperature sensingelement located adjacent to the hot water outlet.

E. Relief Valves

F. Water relief valves of a type and size to comply with ASME Code requirementsshall be shipped loose.

G. Temperature Controls

Temperature controls to regulate burner operation shall be mounted on the unit withtemperature sensing elements located adjacent to the hot water outlet.

1.04 Burner

A. Mode of Operation

Burner operation shall be the full modulation principle. The burner shall always return to lowfire position for ignition.

B. 4.2 Blower

1. All air for combustion shall be supplied by a forced draft blower mountedon the burner, to eliminate vibration and reduce noise level.

2. Maximum sound level of the boiler/burner package shall not exceed _____dbA (when measured in accordance with ABMA Sound Test Standards).

3. 4.2.3 The impeller shall be cast aluminum, radial blade, carefullybalanced, and directly connected to the blower motor shaft.

C. Combustion Air Control

Combustion air damper and fuel control valve shall be operated by a single damper controlmotor that regulates the flame according to load demand. Potentiometer type position controlsshall be provided to regulate operation of the damper control motor.


32/34


33/34

Section A7 Model CBE Hot Water Boiler

A7-33

03-08

6. Gas Pilot - The gas pilot shall be premix type with automatic electricignition. An electronic detector shall monitor the pilot so that the primaryfuel valve cannot open until flame has been established. The pilot trainshall include one (1) manual shut-off valve, solenoid valve, and pressureregulator.

7. Oil Burner

a. Oil Pump - An oil pump with a capacity of approximately twice themaximum burning rate shall be included. Select one of the following:

60-80 hp. Pump shall be an integral part of the burner and mechanically driven.

b. Oil Burner Piping - Select one of the following:

60-80 hp. Fuel oil piping on the unit shall include oil pressure regulating device, oilmetering controls, two (2) solenoid oil shut-off valves, and pressure gauge all integrallymounted on the unit.

c. Oil Atomization Type - Select one of the following:

8. 60-80 hp. Burner shall include a complete mechanical oil atomizingsystem and be of Gas Burner Piping - Select one of the following:

60-80 hp. Gas burner piping on all units shall include two (2) manual shut-off valves,gas pressure regulator, one (1) motorized gas valve with proof of closure switch, two(2) plugged leakage test connection, and high and low gas pressure switches. The gasvalves shall be wired to close automatically in the event of power failure, flame failure,low water, or any abnormal shutdown condition.

E. Control Panel and Flame Safeguard Controller

1. Control Panel

A factory prewired control panel shall be supplied with the boiler-burner package. Panel maybe mounted on the burner or boiler.

2. The panel wil l have a NEMA 1A rating and contain the flame safeguardcontroller, burner motor starter, control circuit fuse, selector switches,

indicating light and terminal strips. Lights shall indicate load demand,flame failure, low water, and fuel valve open.

3. 80 hp. The panel shall contain a control circuit transformer and fuseprotection.

4. The flame safeguard controller shall be a CB110 flame monitor withEPD170 program module. Flame detector shall be ultra-violet type.

1.05 Efficiency Guarantee

A. The boiler must be guaranteed to operate at a minimum fuel-to-waterefficiency of ____ percent at 100 percent ofrating when burning natural gas and ________ fuel-to-steam efficiency at100% firing rate when burning oil (Contact your local Cleaver-Brooks

authorized representative for efficiency details).

1.06 Warranty

A. All equipment is to be guaranteed against defects in materials and/orworkmanship for a period of 12 months from date ofstart-up or 18 months from date of shipment, whichever comes first.

PART 3 EXECUTION

A. Shop Tests

1. The packaged boiler must receive factory tests to check the construction,


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Model CBE Hot Water Boiler Firetube Boilers

controls, and operation of the unit. All tests may be witnessed by thepurchaser, if desired.

B. Start-up Service

1. After boiler installation is completed, the manufacturer shall provide theservices of a field representative for starting the unit and training theoperator at no additional costs.

a. A factory approved and authorized start-up report shall be submittedto the customer/user at the time of start-up.

a7 cbe cleaver

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