July 1996

INTEGRAL FAN BURNERS

4131, 5131, 6131Supplement 6100-1

DESCRIPTION, CAPACITIES, SPECIFICATIONS, APPLICATIONS

Features of NORTH AMERICAN Integral Fan Burners

BUILT-IN FAN: Delivers 100% of combustion air required for burner operation. Eliminates need to install anexpensive and bulky air delivery system. Avoids dependency of several burners on one blower.

CONTROL VARIETY: Building from the basic burner package, two ratio control systems are available alongwith many pre-packaged gas and oil trains, motorized controls, flame safeguard accessories, andprogramming systems.

WIDE RANGE OF CAPACITIES: 3 000 000 to 30 000 000 Btu/hr, in seven sizes. Typical air turndown is 4:1 onstandard models. Greater turndowns are available for special applications.

RUGGED, VERSATILE, AND RELIABLE: An ultra stable burner designed to operate with 20% excess air inchambers at temperatures up to 2000 F and under negative or slightly positive pressures. Cold, tightchambers present no problem for this rugged, low-maintenance workhorse. Proven reliability whileoperating with natural gas, any grade of commercial fuel oil, crude oil, pitch, or refinery bottoms.

Oil AtomizerAssembly

Integral Fan (and) Shutter Section(hinged for quick access to internals)

CombustionAir Interlock

Observation Portwith UV Flame DetectorMounting

Body and Gas Section(Stationary)

Mounting Plateand Tile Assembly

Blower Motor

Control Motor

Air and FuelControl Linkage(far side) Modulating Sensitrol Oil Valve (far side)

Oil Solenoid Valves

Sealtite Conduit

Pilot Solenoid Gas Valves

Modulating GasButterfly Valve

Ignition Transformer

NORTH AMERICAN Mfg. Co.Cleveland, OH 44105-5600 USA

Supplement 6100-1, 7-96Page 2

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{�Burner model number breakdown is as follows:

First digit identifies burner as— 4 = gas only 5 = oil only 6 = dual-fuel

Next 3 digits, 131, identify burner as part of integral fan seriesLetters designate burner frame sizeNumerals or CR after hyphen show fuel selection—

2 = #2 or #4 oil 5 = #5 oil 6 = #6 CR = crude oil

�Capacities and flame lengths are with 20% excess air and1.5"wc backpressure in a cold, t ight chamber. Excess airoperation at rates greater than 20%, through reduction of fuelinput, is possible for nearly all of these burners. Consult factoryfor maximum excess air rate for any particular size and fuel.

�Fuel rates are based on the following calorific values: 1 000 Btu/cu ft of natural gas 135 000 Btu/gallon of light (#2 or #4) oil 150 000 Btu/gallon of heavy (#5 or #6) oil 145 000 Btu/gallon of crude oil

�Capacity is with 15% excess air and 0.5"wc backpressure.�Capacity is with 20% excess air and 5"wc backpressure.

CAPACITIES � CHARACTERISTICS BLOWERTable 1. Main air, Natural Oil, Flame Size,

Burner Data Btu/hr scfh gas, scfh� gph� dia. × length hp rpm

4131A 4 200 000 50 000 4 200 – 2.5' × 5' 1.5 34505131A- 2 4 200 000 50 000 – 30.3 2.5' × 5' 1.5 34506131A- 5,6 4 200 000 50 000 4 200 27.9 2.5' × 5' 1.5 3450

CR 4 200 000 50 000 4 200 27.9 2.5' × 5' 1.5 3450

4131B 6 300 000 76 000 6 300 – 3' × 7' 3 34505131B- 2 6 300 000 76 000 – 50.7 3' × 7' 3 34506131B- 5,6 6 300 000 76 000 6 300 42.0 3' × 7' 3 3450

CR 6 300 000 76 000 6 300 42.0 3' × 7' 3 3450

5131CL- 4 10 500 000 126 000 – 78 3.5' × 11' 5 17506131CL- 5,6 10 500 000 126 000 10 500 70 3.5' × 11' 5 1750

4131C � 12 300 000 141 000 12 300 – 3.5' × 12' 5 34505131C- 2� 12 300 000 141 000 – 91 3.5' × 12' 5 34506131C- 5,6 8 400 000 105 000 8 400 55.8 3.5' × 12' 5 3450

4131CS � 8 400 000 105 000 8 400 – 3.5' × 12' 7.5 34505131CS- 2� 8 400 000 105 000 – 55.8 3.5' × 12' 7.5 34506131CS- 2� 8 400 000 105 000 8 400 55.8 3.5' × 12' 7.5 3450

4131D 18 000 000 216 000 18 000 – 4' × 12' 7.5 17505131D- 2 18 000 000 216 000 – 131 4' × 12' 7.5 17506131D- 5,6 16 800 000 200 000 16 800 112 4' × 12' 7.5 1750

4131E 25 200 000 300 000 25 200 – 4' × 12' 10 17505131E- 2 25 200 000 300 000 – 182 4' × 12' 10 17506131E- 5,6 25 200 000 300 000 25 200 167 4' × 12' 10 1750

CR 25 200 000 300 000 25 200 167 4' × 12' 10 1750

4131FA 30 000 000 360 000 30 000 – 4' × 18' 20 34505131FA- 2 30 000 000 360 000 – 222 4' × 18' 20 34506131FA- 5,6 30 000 000 360 000 30 000 200 4' × 18' 20 3450

CR 30 000 000 360 000 30 000 200 4' × 18' 20 3450

Sand Dryer Heater Treater

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NORTH AMERICAN Mfg. Co.Cleveland, OH 44105-5600 USA

Supplement 6100-1, 7-96Page 3

APPLICATIONS

Process Heaters Water Heaters Liquid Asphalt Heaters Aluminum MeltersSteam Generators Core Dryers Boilers IncineratorsEmulsion Treaters Paint Dryers Vaporizers Air HeatersDirect-Fired Oil Heaters Ceramic Dryers Dross Reclaiming Furnaces Rotary Dryers for Ore, Sand, or Aggregate

Integral fans provide 100% combustion air to these nozzle-mixburners. Oil atomizers are of the tip emulsion design, usingsteam or compressed air as the atomizing medium. Oil must bedelivered to the nozzle at viscosities below 100 SSU.

The ruggedly constructed burners consist of three basic sections.

Front Section. A heavy cast iron mounting plate, with slottedmounting holes, fitted with a high strength castable burner tilerated for service up to 2600 F. A carbon steel or 304 stainlesssteel tile support jacket is available as an option.

Center Section. A circular gas plenum with bottom gas inlet, acombustion air diffuser, a connection for a spark-ignited premixgas pilot (for natural gas or propane), and a threaded boss toaccommodate a flame rod.

Rear Section. Hinge-mounted includes blower motor, impeller,intake guard, a large reinforced glass observation port,provisions for mounting a flame detector, the flange-mountedoil atomizer, and the manual or motorized firing rate control. Anaccurate linked valve ratio control is provided by a compactarrangement of linkage rods and swivels that connect the internalmain air proportioning shutters with a butterfly gas valve and/ora Sensitrol Oil Valve. Fuel oil enters the Sensitrol Oil Valve via aswivel type joint mounted on the hinge.

Basic Gas Burner consists of the above three sections fittedwith a manually positioned and lockable firing rate control lever(shown in burner photo) and a butterfly gas valve with linkageassembly. Refer to Bulletin 6140 for main and pilot gasaccessories.

Basic Light Oil Burner consists of the three basic sectionsdescribed above, with the following equipment: a manuallypositioned and lockable firing rate control lever, a Sensitrol OilValve with linkage assembly, and a flange mounted oil atomizerassembly. Refer to Table 2 for oil and atomizing medium pres-sure/flow requirements. Specify this burner arrangement for oilsup to and including #4 grade.

Basic Heavy Oil Burner is similar to the light oil burner exceptatomizer, Sensitrol Oil Valve, and oil piping are sized andarranged to accommodate heavy oil or crude oil. Oil temperatureis maintained electrically within the burner through four lowwattage cartridge heaters: one within Sensitrol valve body, twoin heater blocks attached to oil tube, and one in a heater blockattached to the nozzle. The hinge assembly is fitted with a hotoil return valve (shown in the photograph). This burner isrecommended for all heavy oils, including blended grades.

Basic Dual-Fuel Burner is similar to oil burner except provisionis made for burning either gas or a pre-selected grade of oil. Adual-fuel burner fitted for heavy oil permits use of any grade,ranging from diesel through very heavy #6.

Flame Supervision and Control. There is a long list of optionalaccessories that can be added to the basic burners describedabove. In many applications of this burner, the combustionchamber is below 1400 F. Electronic flame supervisory systemsare strongly recommended. Such systems are offered by NorthAmerican and others. A specially designed system is availablefor boilers.

Your local North American sales engineer can help select burneraccessories required to make a firing system that will be relia-ble, efficient, and safe to operate.

SPECIFICATIONS

Cooking Oil Heater Aluminum Dross Reclaiming Furnace

Aluminum Dross

2000 F

Flue Gas

Printed in USA NA700-Suppl6100-1

NORTH AMERICAN Mfg. Co.Cleveland, OH 44105-5600 USA

Supplement 6100-1, 7-96Page 4

Pathological Incinerator Liquid Asphalt Heaters

�Letters designate frame size—see Table 1, page 2.

�Oil and dual-fuel burners require an accessory package for the atomizing medium. Pressures required at the inlet of thatpackage are 75-100 psi for air and 50-125 psi for steam.

�Oil and dual-fuel burners require oil delivered to burner hinge at a viscosity below 100 SSU and at pressures listed above.If a liquid fuel other than commercial fuel oil is to be used, consult North American for recommendations of pressure andflow requirements.

�Gas burners are intended for use with natural gas or propane. Listed pressures are for natural gas—consult NorthAmerican for propane pressures. Pressures listed are for system sizing only. They are not for ratio adjustment.

�Gas piping upstream of burner gas metering butterfly valve to be same size as the metering valve for a minimum of 10 pipediameters. Place reducer, if used, as close as possible to the gas regulator.

WARNING: Situations dangerous to personnel and property can develop from incorrect operation of combustion equipment.North American urges compliance with National Safety Standards and Insurance Underwriters recommendations, and care in operation.

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Table 2.

Atomizing Mediums� Oil Pressures�Flows and Minimum GasPressures Req'd Comp. air flow, Steam flow, Light oil, Heavy oil, Gas Pressures� Metering

at Burners scfm lb/hr psig psig "wc Valve Size�

A 4 30 120 70 2.2 3"B 4 50 90 65 3.1 3"CL (heavy oil) 8 70 – 80 2.8 4"C (light oil) 4 91 85 – 2.2 4"C (heavy oil) 7 130 – 70 2.2 4"CS (light oil) 16 110 125 – 14.0 4"D 16 130 50 60 4.0 6"E (light oil) 14 182 55 – 3.0 8"E (heavy oil) 28 168 – 70 3.0 8"FA 28 200 75 90 6.0 8"

North American Mfg. Co., 4455 East 71st Street, Cleveland, OH 44105-5600 USA, Phone 216-271-6000, Facsimile 216-641-7852E-mail sales@namfg.com � www.namfg.com

Blower Business Group4/5/6131 BURNERS

Engineering Dimensions 6131

4/5/6131-A, B, C, and CS FRAME SIZE BURNERS

DIMENSIONSinches

CAPACITIESmillion Btu/hr

Frame gas and light oil heavy oil

A 3.4 to 4.2 2.5 to 4.2B 5.2 to 6.3 5.2 to 6.3C 8.4 to 12.3 8.4CS 8.4 —

131 SeriesBurner Frame Size4131-, 5131-, 6131- A� B C D E1� E2�� F1� F2� G H J K� L M N P Q

A 3 363/4 25 113/4 16 163/4 131/2 131/2 203/4 103/4 141/4 113/4 231/2 221/2 21 615/16 6B 3 413/8 295/8 113/4 16 163/4 111/2 131/2 203/4 103/4 141/2 137/8 271/8 251/2 21 615/16 6C 4 461/8 331/8 13 191/2 201/4 14 163/8 24 141/2 143/4 161/4 29 261/2 23 11 613/16

CS 4 53 40 13 191/2 201/4 14 163/8 24 141/2 211/4 20 38 261/2 23 11 613/16

131 SeriesBurner Frame Size4131-, 5131-, 6131- R1� R2� S T U W X Y Z AA BB CC DD� EE FF1� FF2�

A 201/2 24 103/8 153/4 1/2 191/2 41/4 8 63/4 133/4 51/8 57/8 511/16 23/4 291/4 273/4

B 201/2 24 103/8 153/41/2 191/2 41/4 8 63/4 181/8 63/4 71/2 71/4 213/16 291/4 241/4

C 28 311/2 12 161/4 5/8 223/4 53/4 91/4 8 171/4 47/8 73/8 71/4 51/2 293/4 243/4

CS 28 311/2 12 161/4 5/8 223/4 53/4 91/4 8 21 63/8 91/8 71/4 5 293/4 243/4

� ANSI 125 lb flanged connection. Not used on 5121 or 5131 Burners.� Honeywell M9484 or M7284 motors shown. For other motor types, check with North American.� Furnace opening for 131-A, B, and equivalent size 121 burners is 161/2" dia. (171/2" dia. with jacketed tile).

Furnace opening for 131-C, CS, and equivalent size 121 burners is 201/2" dia. (21" dia. with jacketed tile).� With stainless steel tile jacket only.� If one pilot solenoid valve is used, dimension R1 applies. Use dimension R2 for burners with two pilot solenoid valves.� Optional, furnished only when ordered.� If Moore Positioner is used, dimension FF1 applies. Use dimension FF2 if the Moore Positioner is not supplied.� If air motor is used, add 50 lb to these figures.� If burner is gas and/or light oil, dimension F1 applies. Use dimension F2 if burner is heavy oil.

Est. Shipping Weights �

Frame lb

A 400B 500C 700CS 800

Air Inletcontroller�

DD�

EE

J

Ignition transformerPilot

L–swing radius

Pilot regulator

Pilot solenoid valve3

R1, R2�

F1, F2�dia.

E1�dia.

E2��dia.

Gdia.

Stainless tile jacket�N

Prewired burner junction boxP9

Q

11

Hinge switch

Lifting eye

Combustionair switch

4

12

Silencer�

3/8 fpt Oil inlet

Blower housing

Blower motor

Z

Y

45°

8 slots for U-dia. boltsequally spaced on W-BC

Control motorwith low fire

start switch�Observation port

UV detector

BBAA

CC

CB

M–min.floor clearance

1/2 fptPilot gas

H

A–pipe sizeGas inlet� X D

ST

FF1, FF2�

Air motor�with high andlow switches

K�

February 1998

Printed in USA AGS298-ED6131-6000

WARNING: Situations dangerous to personnel and property can develop from incorrect operation of combustion equipment.North American urges compliance with National Safety Standards and Insurance Underwriters recommendations, and care in operation.

DIMENSIONS SHOWN ARE SUBJECT TO CHANGE. PLEASE OBTAIN CERTIFIED PRINTS FROM NORTH AMERICAN MFG. CO.IF SPACE LIMITATIONS OR OTHER CONSIDERATIONS MAKE EXACT DIMENSION(S) CRITICAL.

4/5/6131-D, E, FA, and FC FRAME SIZE BURNERS

DIMENSIONSinches

CAPACITIESmillion Btu/hr

Frame gas and light oil heavy oil

D 12.6 to 18.0 12.6 to 16.8E 21.0 to 25.2 21.0 to 25.2FA 29.4 to 30.0 29.4 to 30.0FC 29.4 to 30.0 29.4 to 30.0

131 SeriesBurner Frame Size4131-, 5131-, 6131- A� B C D E1� E2�� F G H J K� L M N P Q

D 6 627/8 491/8 133/4 23 233/4 17 28 141/2 173/4 20 3711/16 331/2 25 123/4 91/16

E 8 641/4 51 131/4 23 233/4 18 321/4 161/2 203/8 20 41 38 263/4 141/8 111/8FA 8 683/4 55 131/4 23 233/4 18 321/4 161/2 231/8 233/4 49 38 263/4 141/8 111/8FC* 8 74 61 131/4 23 233/4 18 321/4 161/2 27 233/4 51 38 263/4 141/8 111/8

131 SeriesBurner Frame Size4131-, 5131-, 6131- R1� R2� S T U W X Y Z AA BB CC DD� EE FF GG1� GG2�

D 293/4 331/4 14 155/16 5/8 263/8 71/4 131/2 10 281/4 85/8 123/4 103/4 51/8 7 383/4 333/4

E 311/2 351/2 161/8 181/4 7/8 30 83/8 151/2 12 291/2 8 127/8 103/4 61/4 71/2 35 30FA 311/2 351/2 161/8 181/4 7/8 30 83/8 151/2 12 36 13 15 93/4 113/16 71/2 35 30FC* 311/2 351/2 161/8 181/4 7/8 30 83/8 151/2 12 37 131/4 16 93/4 127/16 71/2 35 30

* 50 hertz only.

North American Mfg. Co., 4455 East 71st Street, Cleveland, OH 44105-5600 USA, Phone 216-271-6000, Facsimile 216-641-7852

Est. Shipping Weights �

Frame lb

D 950E 1250FA 1600FC 1700

� ANSI 125 lb flanged connection. Not used on 5131 Burners.� Honeywell M9484 or M7284 motors shown. For other motor types, check with North American.� Furnace opening for 131-D, E, FA, and FC Burners is 231/2" dia. (241/2" dia. with jacketed tile).� With stainless steel tile jacket only.� If one pilot solenoid valve is used, dimension R1 applies. Use dimension R2 for burners with two pilot solenoid valves.� Optional, furnished only when ordered.� If Moore Positioner is used, dimension GG1 applies. Use dimension GG2 if the Moore Positioner is not supplied.� If air motor is used, add 50 lb to these figures.� FA and FC burner shutter assembly with blower assembly removed swing radius = 215/16".

Air Inletcontroller�

DD�

EE

�

Pilot

L–swingradius

Pilot regulatorPilot solenoid valve

R1, R2�

Gdia.

N

Prewired burner junction box

P

9

Q

11

Lifting eye

Combustion air switch

4

12

Silencer�

1/2 fpt Oil inlet

Blowerhousing

Blower motorZ

Y

45°

8 slots for U-dia. boltsequally spaced on W-BC

Control motorwith low fire

start switch�Observation port

UV detector

BBAA

CC

CB

M–min.floor

clearance

H

A–pipe sizeGas inlet� X

D

T

GG1, GG2�

K�

Hinge switch

S

Ignitiontransformer

FF

1/2 fpt Pilot gas

J

E1�dia.

E2��dia.

Fdia.

Air motor�with high andlow switches

Stainlesstile jacket�

Features of NORTH AMERICAN Packaged Automatic Burners

BUILT-IN BLOWER: Delivers 100% of combustion air required for burner operation. Eliminates need to install an expensiveand bulky air delivery system.

CONTROL VARIETY: Building from the basic burner package, control systems are available along with many pre-packagedgas and oil trains, motorized controls, flame safeguard accessories, and programming systems.

WIDE RANGE OF CAPACITIES: 2 500 000 to 30 000 000 Btu/hr, in six frame sizes. Typical air turndown is 4:1 on standardmodels. Greater turndowns are available for special applications.

RUGGED, VERSATILE, AND RELIABLE: An ultra stable burner designed to operate in chambers at temperatures up to 2000 Fand under negative or slightly positive pressures. Cold, tight chambers present no problem for this rugged, low-maintenance workhorse. Proven reliability while operating with natural gas, #2 fuel oil, and #6 fuel oil. Crude oil, andpitch have also been successful, however, these are often application dependent. Consult North American Mfg.,Cleveland, for applications with these fuels.

May 1994

Blower Business Group

4131, 5131, 6131 PACKAGED AUTOMATIC BURNERS

Engineering Specifications 6131

NORTH AMERICAN Mfg. Co. Engineering Specifications 6131, 5-94Cleveland, OH 44105-5600 USA Page 2

The Packaged Automatic Burners are ideal for steel firebox,scotch marine, cast iron sectional, and watertube boilers,and industrial process heating equipment, such as air heaters,dryers, oil heaters, ovens, and incinerators. Six frame sizesproduce a wide range or capacities (2 500 000 to 30 000 000Btu/hr).

Design: The 4131 Burner is for any fuel gas; the 5131 forfuel oils, and the 6131 for dual-fuel (combination gas andoil). All are of the nozzle mix design with an integral blowerto supply 100% combustion air. Oil atomizers are of the tipemulsion design, using steam or compressed air as theatomizing medium. The hinged construction provides quickand complete accessibility. Fixed fuel lines need not bebroken for service because fuel oil enters through the burnerhinge and gas enters through a stationary gas section.

Construction: This rugged burner consists of a cast ironmounting plate, with slotted mounting holes, fitted with a highstrength case refractory burner tile rated for service up to2600 F. A stainless steel tile support jacket is available as anoption. The grade of stainless steel is application dependent.The circular gas plenum has a bottom gas inlet, a combus-tion air diffuser, and a spark-ignited premix gas pilot (fornatural gas or propane).

The hinge-mounted blower section includes the blowermotor, impeller, intake guard (or optional intake silencer), alarge reinforced glass observation port, provisions for mount-ing a flame detector, and flange mounted oil atomizer. Anaccurate linked valve ratio control is provided by a compactarrangement of aircraft-quality linkage rods and swivels thatconnect the internal main air proportioning shutters with abutterfly gas valve and/or a Sensitrol™ oil valve and the modu-lation motor.

Hinged constructionprovides for completeaccessibility toburner internals.

Standard Components: The 4/5/6131 Burner includes thepilot gas regulator, pilot gas solenoid (2nd solenoid optional),6000 volt ignition transformer, electric modulating controlmotor (air motor optional), low combustion air interlock, andburner hinge interlock switch. Oil burners also include asolenoid valve (or optional motorized automatic valve), pipedbetween the hinge and atomizer assembly. All electricalcomponents are wired to the burner mounted NEMA 4junction box.

Turndown: Typical air turndown is 4:1 on standard models.Greater turndown can be achieved with an optional blowerair inlet controller. Consult North American, Cleveland, fordetails.

Excess Air: Standard burner linkage is factory set to deliver20% excess air. Rates greater than 20% are possible throughreduction of fuel input.

Flame Characteristics: These burners generate well-defined medium length flames. See Supplement 6131-1 forflame sizes.

Chamber Pressures: Designed for stable operation inchambers with pressures ranging from –0.5"wc to 2.0"wc.The "N" burner is specified on applications with 0 to –0.5"wcchambers (i.e., 2-pass boilers, dryers, heaters, etc.) and the"P" burner is specified on those with 0.1 to 2.0"wc chambers(i.e., 3-pass boilers, etc.). Consult North American, Cleveland,for burner performance with other pressures.

Underwriters Laboratories Listing: The Model 4/5/6131Burners have been designed in accordance with the require-ments of the Underwriters Laboratories. Consult NorthAmerican Mfg., Cleveland, for labeling service.

WARNING: Situations dangerous to personnel and property can develop from incorrect operation of combustion equipment.North American urges compliance with National Safety Standards and Insurance Underwriters recommendations, and care in operation.

Printed in USA AGS797-ES6131-6000