Engineering Data | HiRAM ® High Velocity
Main Air Pressure, osi (inch w.c.)
4575-8-A
0.2 (.35)
1 (1.73)
4 (6.9)
9 (15.6) 16 (27.7)
Main Air Flow, not burning, scfh Main Air Flow, burning, stoich., scfh Maximum %XSAir with flame signal (UV)
—
—
—
—
54 000 41 500
4 400
9 400
19 600
31 000
200
325
400
400
350
Maximum %XSFuel
30
30 3.5
30
30 4.5
30
Flame Length, stoich., ft. Flame Diameter, stoich., in. Gas Pressure, stoich., osi Tile Pressure, stoich., osi
3 9
4
5
12
12
12
18
0.1 0.1
0.5 0.5 325 325
1.9 1.8
4.2 4.0
7.4
7.1
Maximum %XSAir, ignition--pilot
200
400 250
400 250
350 300
Maximum %XSAir, ignition--direct spark
125
Main Air Pressure, osi
4575-8-B
0.2
1
4
9
16
Main Air Flow, not burning, scfh Main Air Flow, burning, stoich., scfh Maximum %XSAir with flame signal (UV)
—
—
—
—
81 000 62 000
5 250
13 300
29 500
43 600
425
650
500
500
750
Maximum %XSFuel
30 3.5
30
30 4.5
30
30
Flame Length, stoich., ft. Flame Diameter, stoich., in. Gas Pressure, stoich., osi Tile Pressure, stoich., osi
4
5
6
10
12
16
18
20
0.14
0.75
2.9 1.9
6.3
10.7
0.1
0.5
4.1
7.0
Maximum %XSAir, ignition--pilot
425 200
650 200
500 200
300
— —
Maximum %XSAir, ignition--direct spark
—
Main Air Pressure, osi
4575-9
0.2
1
4
9
16
Main Air Flow, not burning, scfh Main Air Flow, burning, stoich., scfh Maximum %XSAir with flame signal (UV)
—
—
—
—
116 800 89 000
8 900
20 600
43 400
67 000
450
800
900
900
1 200
Maximum %XSFuel
30 4.5
30
30 6.5
30
30
Flame Length, stoich., ft. Flame Diameter, stoich., in. Gas Pressure, stoich., osi Tile Pressure, stoich., osi
6
7
8
12
18
18
18
24 11.1 5.8
0.1 0.1
0.7 0.4
2.5 1.5
6
3.3
Maximum %XSAir, ignition--pilot
500 400
800 400
800 500
— —
— —
Maximum %XSAir, ignition--direct spark
Main Air Pressure, osi
4575-10-A
0.2
1
4
9
16
Main Air Flow, not burning, scfh Main Air Flow, burning, stoich., scfh Maximum %XSAir with flame signal (UV)
—
—
—
—
145 000
10 600
23 800
47 600
72 500 101 000
500
675
850
800
900
Maximum %XSFuel
30
30
30
30
30
Flame Length, stoich., ft. Flame Diameter, stoich., in. Gas Pressure, stoich., osi Tile Pressure, stoich., osi
4 8
5 9
6
7
8
12
14
16
0.2 0.1
0.6 0.5 675 675
2.1 1.9
4.6
7.9
4.1
7.1
Maximum %XSAir, ignition--pilot
500 300
850 850
800 800
900 900
Maximum %XSAir, ignition--direct spark
Medium velocity 4575 burners operate at reduced air pressures compared to the high velocity versions listed above.
Bulletin 4575 Page 7
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