Capacities | HiRAM® Burners
ATOMIZING AIR REQUIREMENTS High tile pressures create the superior velocities of HiRAM° Burners; these pressures also create an atomizing air requirement of 22 osi (at the burner) when burning oil, to realize at least 16 osi drop across the atomizer at high fire. When burning gas, atomizing air pressure can be same as main air pressure.
Main Air Capacities* scfh (burning on stoichiometric ratio)
Main air pressure drop across the burner, osi
Burner designation
0.2
1
4
9
16
4 100 4 980 10 900 10 600 12 000 12 000 11 300 10 900 18 200 18 200
12 500 9 700 20 200 17 900 26 600 26 600 27 800 21 200 40 700 40 700
27 000 29 000 43 250 42 000 53 000 53 000 62 000 68 500 71 500 82 500
45 000 44 000 64 800 66 100 76 000 83 500 89 500 101 000 105 000 122 000
63 000 61 000 85 900 91 200 104 000 106 000 125 000 129 000 155 000 151 000
Natural Gas
6575-8-B
#2 Oil
Natural Gas
6575-9
#2 Oil
Natural Gas
6575-10-A
#2 Oil
Natural Gas
6575-10-B
#2 Oil
Natural Gas
6575-12
#2 Oil
* Not including atomizing air, which adds 3-5% to main air scfh (see box above.)
Total Air Capacities scfh 16 osi main and 22 osig atomizing air at burner
Main
Burner
Burning #2 oil stoichiometric ratio
combustion air not burning
designation
6575-8-B
65 000 94 300 112 000 134 000 160 000
84 000 113 000 151 000 183 000 213 000
6575-9
6575-10-A 6575-10-B
6575-12
Dual Fuel HiRAM ® Characteristics
Main air pressure (osi)
Gas
Oil
4
16
4
16
Flame length (ft) stoichiometric ratio
4
6 8 8
6575-8-B
6 ½
7 ½
6 ½
6575-9
7 7
9 9
6
6575-10-A 6575-10-B
8 ½
10
9 ½
10
7
8
6575-12
9
9 ½
Excess air (%)
750
700 500 1200 850 4000
6575-8-B
450 150 200 200 225
750 225
1000 1000 800 2500
6575-9
6575-10-A 6575-10-B
1000 1000 1500
6575-12
Bulletin 6575 Page 3
Do not operate fuel rich.
May produce smoke and/or noxious fumes in cold chambers below 1400°F.
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