Special options are available for Fireall burners for a nominal 
increase in price. These must be ordered with assistance from 
North American. Several of the more popular options are detailed 
on this page. Benefi ts from using these options can vary and 
oft en depend on factors other than the burner itself, such as the 
fuel delivery system, furnace size and temperature, and process 

Back pressure construction

 is available for applications up 

to several psi, such as found in fl uidized beds. The special 
construction addresses leak paths to minimize this condition. The 
standard Fire•All product is suitable up to approximately 



furnace back pressure.

Fast mix construction

 is available for most burner sizes. 

This reduces fl ame length by approximately 40%. It is not 
recommended for heavy oil applications, and in general, the 
modifi cation will result in a reduction in performance limits 
(lighting, excess air, etc.). 

Hinged burner construction

 is available for the -8-A size only. 

This allows the BO (burner only) portion to swing open from the 
mounting and tile assembly for easy access to burner internals.

Undersized atomizers

 for 5514 and 6514 burners are useful 

where extra turndown, preheated air, or consistently lean 
operation is required. Atomizer reduction is typically one size 
smaller, e.g., an -8-A atomizer in an -8-B burner. Under sizing the 
atomizer is not recommended for the 6514-10 burner.

High pressure atomizers

 5622, 5623 or 5643 can be fi tted to 

5514 and 6514 burners for special applications such as inciner-
ating waste liquids. Steam or compressed air (15 to 125 psig) is 
required at the atomizer for proper operation. Refer to Bulletins 
5622/23 and 5643 for performance characteristics. In these in-
stances, the existing low pressure atomizing air connection on the 
burner is used for additional main combustion air.

Special construction

 (welding) of the atomizing air nozzle and 

tube is recommended for hot applications (1800°F and higher) 
where the 5514 or 6514 burner is fi red vertically down.


Spoked oil nozzles

 can be requested for light oil applications. 

This can improve atomization quality and reduce burner 
carboning. The standard 5514 and 6514 oil nozzle (not spoked) is 
recommended for all heavy oil applications.

Tile mountings 

can be specifi ed with 1


" NPT connection 

to accept a 5025-1-3T direct spark oil pilot.This pilot is 
recommended for interrupt

ed operation only. Good practice dictates 

mounting the oil pilot above the burner horizontal centerline to avoid 
possibility of oil running back into the pilot. An 8699-1-453 balancing 
orifi ce is suggested for the air supply to provide proper air fl ow for 8 
osi and 0.85 gph rating.

Refractory burner tiles

 can be manufactured in a number of special 

ways including shortened length, with a choked exit, with expanded 
metal liners or sst needles. Contact North American for an explana


of benefi ts and availability of these options. Pre-fi red tiles are no 
longer available as a special option.

Sheet 6514-3 

page 2

Oversized air connections. 

Nose castings for sizes -8-A and larger 

can be bored out for up to 30% additional main air capacity. Complete 
performance data is not available for burners with this modifi cation. 
Most -8-B,-9, and -10 applications require an enlarged air connection 
fl ange.


Direct spark ignition

 is possible with a 4055-M igniter for gas only 

4514 burners. The igniter has a 


" NPT connection and can replace 

the 4025 pilot tip. Igniter extension is adjustable and optimal position is 
determined during fi eld start up. The burner main air pressure should 
be less than 1 osi when attempting to light with direct spark. 











 4514 / 5514 / 6514-8-B 

8"  3-21995-1

 4514 / 5514 / 6514-9 

10"  3-21996-1

 4514 / 5514 / 6514-10 

12"  3-21997-1

Oversized air connection 

(SW type)




t © 2020- F


es - All r


ts r


ved | Shee

t 6514-3 03/13


Situations dangerous to personnel and property may exist with the operation and maintenance of any combustion equipment. The presence of fuels, oxidants, hot and cold combustion products, hot 

surfaces, electrical power in control and ignition circuits, etc., are inherent with any combustion application. Components in combustion systems may exceed 160°F (71°C) surface temperatures and present hot 
surface contact hazard. Fives North American Combustion, Inc. suggests the use of combustion systems that are in compliance with all Safety Codes, Standards, Regulations and Directives; and care in operation.

Fives North American Combustion, Inc. 

4455 East 71st Street - Cleveland, OH 44105 - USA

www.fi vesgroup.com


fna.sales@fi vesgroup.com
T +1 800 626 3477 - F +1 216 373 4237

Catalog Combustion 2021 - Page 0782

Fives Group

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Fives Group Part Numbers on this Catalog Page
Line Part Number Manufacturer Request Quote
1 3-21995-1 Fives Group Request Quote
2 3-21997-1 Fives Group Request Quote
3 4514/5514/6514-10 Fives Group Request Quote
4 4514/5514/6514-8 Fives Group Request Quote
5 5025-1-3 Fives Group Request Quote
6 8699-1-453 Fives Group Request Quote
7 3-21996-1 Fives Group Request Quote
8 4514/5514/6514-9 Fives Group Request Quote