Product Overview | Oil Burners
OPERATION B urners can be lit at rich, lean, or correct oil/air ratio, then immediately turned to high fire. Required oil pressure at the burner is nearly zero, but a pressure drop of about 10 psi should be taken across the 1813 Sensitrol™ Valve. If furnace temperatures after shutdown exceed 1900°F, pass some air through the burner to prevent overheating. 5422 Burners can also be operated with excess air (see Table 2) if lean operation is desirable for temperature uniformity or furnace versatility. Excess air can improve temperature uniformity by: (1) reducing hot mix temperatures to eliminate hot spots in front of the burners; (2) churning furnace atmosphere to reduce stratification; (3) creating positive furnace pressure to stop cold air infiltration; (4) increasing effective turndown. 5422 Fire•All Oil Burners are ideal for heat treat and non- ferrous melting furnaces, kilns, ovens, air heaters, dryers, chemical process equipment, and other applications where superior temperature uniformity is required. (For higher temperature service, use the 5425 version.) These sealed-in light oil burners are stable at correct ratio and with up to 50% excess fuel if additional air for combustion is in the furnace near the burner.
LIGHTING AND FLAME SUPERVISION A 4011-12 pilot set is recommended for individual burner ignition. When multiple burners share a single pilot pre-mix header, a 4021-12 pilot tip per burner with an appropriately sized air/gas mixer is recommended. A manual torch can be used in some applications. Ultraviolet (UV) detector can be installed in one of three holes in the body, using an adapter listed in Bulletin 8832. UV scanners allow igniting with up to 14 osi main air. When using flame supervision, an interrupted pilot is required--do not use constant or intermittent pilots.
Table 1.
COMBUSTION AIR CAPACITIES, scfh
ATOMIZING AIR CAPACITIES, scfh
Air pressure drop across the burner, osi
Burner designation
0.1
1
5
6
8
12
16
14
16
18
20
22
24
5422-2 5422-3 5422-4 5422-5 5422-6
160 280 460 750
520 890
1 160 1 980 3 240
1 270 2 160 3 540
1 470 2 500 4 100
1 800 3 050 5 000 8 150
2 100 3 550 5 800 9 450
500 500 500 640 800 870 870
520 520 520 690 850 930 930
560 560 560 720 910 990 990
600 600 600 760 950
620 620 620 800
650 650 650 840
1 450
2 370 5 300 3 700 8 300
5 800 6 700 9 100 10 500
1180
12 900 14 800
1000
1050
5422-7-A 5422-7-B 5422-8-A
2070 2580
6 550 14 600 16 000 18 500
22 700 26 200
1040 1040 3170
1100 1100 3320
1150 1150
8 150 18 200 19 900 23 000 28 200 32 600
3320 10 500 23 500 25 800 29 700 36 400 42 000
2650
2840
3000
3480
For total capacity, add combustion air and atomizing air. (For Btu/h HHV 1769-IN028, multiply by 100.)
Table 2. Maximum Excess Air Rates, %
Combustion Air Pressure at Burner
5422-2 5422-3 5422-4 5422-5 5422-6 5422-7-A 5422-7-B 5422-8-A
1 osi 8 osi 14 osi
280 400 500
200 500 650
500 800 900
250 400 600
150 400 550
150 300 450
150 700 800
200 280 350
Above excess air rates with 9" long tile, with 14-22 osi atomizing air at the burner, and without pilot.
Bulletin 5422 Page 2
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