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INTEGRAL FAN BURNERS
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DESCRIPTION, CAPACITIES, SPECIFICATIONS, APPLICATIONS

D D D D Body and Gas Section

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Observation Port (Stationary)

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Integral Fan (and) Shutter Section with UV Flame Detector

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Mounting Plate

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(hinged for quick access to internals) Mounting

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and Tile Assembly

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Combustion

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Air Interlock

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Oil Atomizer

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Assembly

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Blower Motor

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N T Ignition Transformer

Modulating Gas
Butterfly Valve

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Pilot Solenoid Gas Valves

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Sealtite Conduit

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Control Motor

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Oil Solenoid Valves

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Air and Fuel

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Control Linkage

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Modulating Sensitrol Oil Valve (far side)

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(far side)

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BUILT-IN FAN: Delivers 100% of combustion air required for burner operation. Eliminates need to install an expensive and bulky air

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delivery system. Avoids dependency of several burners on one blower.

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CONTROL VARIETY: Building from the basic burner package, two ratio control systems are available along with many pre-packaged

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gas and oil trains, motorized controls, flame safeguard accessories, and programming systems.

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WIDE RANGE OF CAPACITIES: 3 000 000 to 30 000 000 Btu/hr, in seven sizes. Typical air turndown is 4:1 on standard models.

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Greater turndowns are available for special applications.

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RUGGED, VERSATILE, AND RELIABLE: An ultra stable burner designed to operate with 20% excess air in chambers at

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temperatures up to 2000 F and under negative or slightly positive pressures. Cold, tight chambers present no problem for

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this rugged, low-maintenance workhorse. Proven reliability while operating with natural gas, any grade of commercial fuel oil,

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crude oil, pitch, or refinery bottoms.

LOW NOx: By their design the package burners are inherently Low Nox. In conjunction with other NOx reducing features, they are

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capable of meeting emission limitations for new or retrofit applications in environmentally sensitive installations. However,

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emission levels will vary from one application to another.

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D D D D Do CAPACITIES  CHARACTERISTICS BLOWER

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Table 1. Main air, Natural Oil, Flame Size,

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Burner Data Btu/hr scfh gas, scfh gph dia.  length hp rpm

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4131A

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p Co 4 200 000 50 000 4 200 – 2.5'  5' 1.5 3450

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5131A- 2 4 200 000 50 000 – 30.3 2.5'  5' 1.5 3450

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6131A-

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5,6

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

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4131B 6 300 000 

D
76 000 6 300 – 3'

D
7' 3 3450

D { D
5131B-
6131B-
2
5,6
6 300 000
6 300 000
76 000
76 000
–
6 300
50.7
42.0
3'
3'


7'
7'
3
3
3450
3450

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

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BURNER DESIGNATION

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5131CL-

op 4 10 500 000 126 000 – 78 3.5'  11' 5 1750

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6131CL- 5,6 10 500 000 126 000 10 500 70 3.5'  11' 5 1750

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4131C

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 12 300 000 141 000 12 300 – 3.5'  12' 5 3450

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2 

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5131C- 12 300 000 141 000 – 91 3.5'  12' 5 3450

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6131C- 5,6 8 400 000 105 000 8 400 55.8 3.5'  12' 5 3450

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4131CS  
 8 400 000 105 000 8 400 – 3.5'  12' 7.5 3450
5131CS- 2  8 400 000 105 000 – 55.8 3.5'  12' 7.5 3450

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6131CS- 2  8 400 000 105 000 8 400 55.8 3.5'  12' 7.5 3450

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py py 18 000 000 216 000 18 000 – 4'  12' 7.5 1750

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5131D- 2 18 000 000 216 000 – 131 4'  12' 7.5 1750

C C C
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6131D- 5,6 16 800 000 200 000 16 800 112 4'  12' 7.5 1750

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4131E

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25 200 000 300 000 25 200 – 4'  12' 10 1750

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5131E- 2 25 200 000 300 000 – 182 4'  12' 10 1750

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6131E- 5,6 25 200 000 300 000 25 200 167 4'  12' 10 1750

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

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4131FA 30 000 000 360 000 30 000 – 4'  18' 20 3450

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5131FA - 2 30 000 000 360 000 – 222 4'  18' 20 3450

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6131FA- 5,6 30 000 000 360 000 30 000 200 4'  18' 20 3450

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

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 Burner model number breakdown is as follows:  Capacities and flame lengths are with 20% excess air and1.5"wc backpressure

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First digit identifies burner as— in a cold, tight chamber. Excess air operation at rates greater than 20%, through

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4 = gas only reduction of fuel input, is possible for nearly all of these burners. Consult factory

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5 = oil only for maximum excess air rate for any particular size and fuel.

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6 = dual-fuel  Fuel rates are based on the following calorific values:

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Next 3 digits, 131, identify burner as part of integral fan series 1 000 Btu/cu ft of natural gas
Letters designate burner frame size 135 000 Btu/gallon of light (#2 or #4) oil
Numerals or CR after hyphen show fuel selection—

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150 000 Btu/gallon of heavy (#5 or #6) oil

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2 = #2 or #4 oil

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145 000 Btu/gallon of crude oil

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5 = #5 oil

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6 = #6  Capacity is with 15% excess air and 0.5"wc backpressure.

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 Capacity is with 20% excess air and 5"wc backpressure.

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CR = crude oil

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Sand Dryer Heater Treater

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APPLICATIONS

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Process Heaters

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Steam Generators D Water Heaters
Core Dryers
Liquid Asphalt Heaters
Boilers
Aluminum Melters
Incinerators

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Emulsion Treaters Paint Dryers Vaporizers Air Heaters

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Direct-Fired Oil Heaters Ceramic Dryers Dross Reclaiming Furnaces Rotary Dryers for Ore, Sand, or Aggregate

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D D D D Do SPECIFICATIONS

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Integral fans provide 100% combustion air to these nozzle-mix Basic Light Oil Burner consists of the three basic sections

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burners. Oil atomizers are of the tip emulsion design, using described above, with the following equipment: a manually

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steam or compressed air as the atomizing medium. Oil must be positioned and lockable firing rate control lever, a Sensitrol Oil

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delivered to the nozzle at viscosities below 100 SSU. Valve with linkage assembly, and a flange mounted oil atomizer

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assembly. Refer to Table 2 for oil and atomizing medium

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pressure/flow requirements. Specify this burner arrangement

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The ruggedly constructed burners consist of three basic

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for oils up to and including #4 grade.

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sections.

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Front Section. A heavy cast iron mounting plate, with slotted
Basic Heavy Oil Burner is similar to the light oil burner except
atomizer, Sensitrol Oil Valve, and oil piping are sized and

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mounting holes, fitted with a high strength castable burner tile arranged to accommodate heavy oil or crude oil. Oil

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rated for service up to 2600 F. A carbon steel or 304 stainless temperature is maintained electrically within the burner through

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steel tile support jacket is available as an option. four low wattage cartridge heaters: one within Sensitrol valve

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body, two in heater blocks attached to oil tube, and one in a

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heater block attached to the nozzle. The hinge assembly is

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Center Section. A circular gas plenum with bottom gas inlet, a

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fitted with a hot oil return valve (shown in the photograph). This

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combustion air diffuser, a connection for a spark-ignited premix

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burner is recommended for all heavy oils, including blended

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gas pilot (for natural gas or propane), and a threaded boss to

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accommodate a flame rod. grades.

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Basic Dual-Fuel Burner is similar to oil burner except

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Rear Section. Hinge-mounted includes blower motor, impeller, provision is made for burning either gas or a pre-selected
intake guard, a large reinforced glass observation port,

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grade of oil. A dual-fuel burner fitted for heavy oil permits use of

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provisions for mounting a flame detector, the flange-mounted

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any grade, ranging from diesel through very heavy #6.

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oil atomizer, and the manual or motorized firing rate control.

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An accurate linked valve ratio control is provided by a compact Flame Supervision and Control. There is a long list of

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arrangement of linkage rods and swivels that connect the optional accessories that can be added to the basic burners

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internal main air proportioning shutters with a butterfly gas described above. In many applications of this burner, the

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valve and/or a Sensitrol Oil Valve. Fuel oil enters the Sensitrol combustion chamber is below 1400 F. Electronic flame

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N
Oil Valve via a swivel type joint mounted on the hinge.

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supervisory systems are strongly recommended.

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Basic Gas Burner consists of the above three sections fitted
with a manually positioned and lockable firing rate control lever

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(shown in burner photo) and a butterfly gas valve with linkage

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assembly. Refer to Bulletin 6140 for main and pilot gas

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accessories.

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D D D D Do Flue Gas

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2000 F

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Aluminum Dross

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Cooking Oil Heater Aluminum Dross Reclaiming Furnace

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T
Pathological Incinerator Liquid Asphalt Heaters

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Table 2.

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Atomizing Mediums Oil Pressures

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Flows and Minimum Gas

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Pressures Req'd

D D Comp. air flow, Steam flow, Light oil, Heavy oil, Gas Pressures Metering

D
at Burners scfm lb/hr psig psig "wc Valve
Size

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Burner Size Designation

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A 4 30 120 70 2.2 3"

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B 4 50 90 65 3.1 3"

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CL (heavy oil) 8 70 – 80 2.8 4"

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C (light oil) 4 91 85 – 2.2 4"

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C (heavy oil) 7 130 – 70 2.2 4"

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CS (light oil) 16 110 125 – 14.0 4"

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D 16 130 50 60 4.0 6"

D D D D E (light oil)
E (heavy oil)
14
28
182
168
55
–
–
70
3.0
3.0
8"
8"

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FA 28 200 75 90 6.0 8"

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

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

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 Oil and dual-fuel burners require an accessory package for the atomizing medium. Pressures required at the inlet of that

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package are 75-100 psi for air and 50-125 psi for steam.

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 Oil and dual-fuel burners require oil delivered to burner hinge at a viscosity below 100 SSU and at pressures listed

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above.

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 Gas burners are intended for use with natural gas or propane.

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