Sheet 6435-3 Page 5
6435-5 – 800°F Main Air, Cold Atomizing Air
Main Air Pressure, osi
Burning Natural Gas
0.2
1
4
9
16
Main air, scfh, stoich.
790 480 1460
1580 3270 5050
7200 380 7770
Atom. air, scfh at 16 osi, stoich. †Total air, scfh, stoich. Gas flow, stoich., scfh Gas pressure, stoich., osi Flame length, in., stoich. Flame diameter, in., stoich. Tile pressure, osi, stoich. Max. %XSAir ‡Stability and flame supervision
460
430
410
2230 3890 5650
146 0.15
223 0.8
389
565
777 9.2
2.5
5.3
12
19
19
19
22
4
5
5
5
5
—
0.35
1.1
2.3
3.9
75 75
200 200
400 400
400 400
350 350
‡Ignition--pilot
•Ignition--direct spark
5XSF
30XSF
50
40
50
Max. %XSFuel
30+
30+
30+
30+
30+
Burning #2 Oil
0.2
1
4
9
16
Main air, scfh, stoich.
790 660 1640
1710 3580 5280 7300
Atom. air, scfh at 30 osi, stoich.
620
600
580
560
†Total air, scfh, stoich. Oil flow, stoich., gph
2520 4370 6050 8050
1.04 1.05
1.66
3.0 1.25
4.2
5.6
Oil pressure, stoich., psi Flame length, in., stoich. Flame diameter, in., stoich. Tile pressure, osi, stoich.
1.1
1.35
1.5 22
10
11 4
19
21
3
5
5
5.5 3.4
—
0.3 0.95
1.95
Max. %XSAir ‡Stability and flame supervision
30 30
125 125 20+
275 275 20+
300 300 20+
350 350
‡Ignition--pilot
Max. %XSFuel
20+
20
† Total air is main air plus atomizing air plus 130 scfh for pilot air. ‡ Honeywell Ultravision Flame Detector C7027A and Honeywell Flame Supervision Protectorelay RA890G yielded 1.5 micro amps or greater for all above rates. • The electrode setup used was that shown in drawing B4-7249. The cooling air was shut off for ignition and turned back on afterwards.
Maximum body temperature 550°F.
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