2422 Excess Air Light Oil Burners are commonly used on heat treat and non-ferrous melting furnaces, kilns, ovens, air heaters, dryers, chemical process equipment, and other applications where superior temperature uniformity is required. These sealed-in, nozzle-mix burners for gas and/or light oil are stable on stoichiometric ratio, with huge amounts of Xces air, or with up to 50% Xces fuel (provided additional air for combustion is in the furnace near the burner.


The 2422 burners can be used with chamber temperatures upto 1110o C. If furnace temperature could rise above 850oC after shutdown, some air should be maintained through the burner to prevent overheating.
LIST I. AIR CAPACITIES*Scfh (Standard Cubic Feet perHour)
Burner Designation 28” wg air at burne
2422-2A 2 800
2422-3A 4 000
2422-4A 6 500
2422-5A 10 100
2422-6A 15 500
2422-7-AA 27 200
2422-8-AA 33 000
2422-9-AA 44 500
* Includes primary and secondary air.


Burners can be lighted at rich, lean, or correct air/fuel ratio, then immediately turned to high fire. Required gas pressures are low: 2”wg at the burner for coke oven gas, less for natural gas. Required oil pressure at the burner is nearly zero, but a pressure drop of about 10 psi should be taken across the Precise Control Valve.
The most common air fuel control system for 2422 Burners uses a cross-connected regulator and Ratio controller. When appropriate for the application, flow balancing systems or fuel only control is very satisfactory. If furnace temperatures after shutdown rise above 950oC, pass some air through burner to prevent overheating. During gas performance, use at least 7”wg atomizing air to cool atomizer (full atomizing air may be used); or for extended periods of performance on gas, atomizer can be with drawn and stored: Use a back plate and gasket to seal rear of burner.


A Pilot Set generally is used to light 2422 Burners. On gas, direct spark ignition of the burner is available. A manual torch can be used in some applications. Burners accept ultraviolet (UV) scanners for monitoring pilot or main flame. A flame rod can be used to monitor pilot or main gas fire. When using flame supervision, an interrupted pilot is required. If using direct spark ignition, turn off spark after burner lights. An observation port is furnished with all burners. A lighter hole cover is supplied if a pilot is not ordered. Positions of pilot, flame detector, and observation port are interchangeable as long as pilot and flame detector are mounted in adjacent holes.


Xces air can improve temperature uniformity by avoiding hot spots in front of burners, by churning furnace atmosphere to reduce stratification, and by creating positive furnace pressure to eliminate cold air infiltration. Xces air can give very high effective burner turndown. Thus a furnace used for high temperature work (such as heat treating at 950oC) with burners firing on air/fuel ratio can also be used for low temperature jobs (such as drawing or drying at 300o C) with burners firing on lean ratio.


Air and gas inlets can be rotated in 90° both CW& ACW Direction, but air and gas pipes should be brought in from the top or side to prevent oil dripping into them. Mounting plates are cast iron. Burner Blocks are 9″ long for thicker furnace walls, lining beyond end of tile should be flared at least 30° included angle, starting at tile OD. Extension tiles are not recommended. For installation convenience, burner body can be separated fromthe mounting plate and tile assembly. But burner block must be set in the wall with pilot and flame detector notches in proper location relative to intended burner body position.

JACKETED BURNER BLOCKS: 2422 Burners have a carbon steel jacket around the burner block for applications where there is no furnace refractory to support tiles and where temperatures surrounding the jacket will not exceed 450o C. Stainless jackets are available for higher temperatures.

LIST II - COMBUSTION AIR CAPACITITES in scfh (not including atomizing air)
Burner Designation Air Pressure Drop Across Burner in inches of WGP Approx. flame lengths in millimeter with 28”wg Main air (in open furnace)
1 2 8 10 14 21 28 Gas Oil
2422-2A 160 520 1160 1270 1470 1800 2100 0152 0456
2422-3A 280 890 1980 2160 2500 3050 3550 0456 0608
2422-4A 460 1450 3240 3540 4100 5000 5800 0608 0760
2422-5A 750 2370 5300 5800 6700 8150 9450 0760 0760
2422-6A 1180 3700 8300 9100 10500 12900 14800 0912 1216
2422-7AA 2070 6550 14600 16000 18500 22700 26200 1824 1824
2422-8AA 2580 8150 18200 19900 23000 28200 32600 1824 1520
2422-9AA 3320 10500 23500 25800 29700 36400 42000 2128 1824

Air pressure drop across burner in inches of WGP
Burner Designation 24 28 31 34 38 41
2422-2A, -3A,-4A 500 520 560 600 620 650
2422-5A 640 690 720 760 800 840
2422-6A 800 850 910 950 1000 1050
2422-7AA, 8AA 870 930 990 1040 1100 1150
2422-9AA 2650 2840 3000 3170 3320 3580