Flame-Jet Gas Burners - Flame Characteristics
Sheet 4545-1
TABLE 1. Capacities, Stability Limits, Flame Lengths.
Flame Lengths with natural gas,
Stability limits without pilot
Air
Air
Burner
Pressure,
Capacity,
Excess Air (Lean Limit)
Excess Fuel (Rich Limit)
correct ratio,
size
osi
cfh
open cold furnace
4545-6
1
3,710 7,400
160% 130% 125% 120% 480% 420% 400% 330% 270% 250% 200% 200% 300% 370% 330% 200% 1500% 1500% 1400% 1300%
75% 78% 82% 73%
2.5' 3.0' 3.0' 3.0' 3.0' 4.0' 4.0' 4.0' 4.0' 4.5' 6.0' 6.0' 4.5' 5.5' 6.0' 6.0' 7.0' 7.0' 8.0' 9.0'
4 8
10,500 14,800
16
4545-7
1
6,550
100% 100% 100%
4 8
13,100 18,500 26,200 10,600 21,200 30,000 42,400 17,000 34,000 48,000 68,000 31,100 62,000 88,000 124,000
16
85%
4545-8-A
1
100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100%
4 8
16
4545-8-B
1
4 8
16
4545-9
1
4 8
16
Note: Burner stability is influenced by the location of the combustion air inlet elbow. Maintain a minimum of four pipe diameters between air inlet flange and nearest elbow. TABLE 2. Flame Lengths at Various Ratios.
Burner
Air
size
Pressure, osi
230% Excess Air
Correct Ratio
100% Excess Fuel
4545-8-A
1
1.0' 1.0' 1.5' 1.5'
4.0' 4.5' 6.0' 6.0'
6.0' 9.0'
4 8
10.0' 10.0'
16
4545D MODELS. See Sheet 4545-2 for information on 4545D Burners (30% greater capacity). FLAME SAFEGUARD INFORMATION. See Sheet 8832-1
WARNING: 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.
CONTACT fna.sales@fivesgroup.com T +1 800 626 3477 - F +1 216 373 4237
Fives North American Combustion, Inc. 4455 East 71st Street - Cleveland, OH 44105 - USA www.fivesgroup.com
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