6435-1 with Cold Main Air, Cold Atomizing Air
Main Air Pressure osi/"w.c./mbar
Not Burning Main Air Flow scfh (Nm 3 /h)
1350 (36.1) 195 (5.21)
Atom. air, scfh (Nm 3 /h) @ 30 osi/51.9"w.c./129 mbar Atom. air, scfh (Nm 3 /h) @ 8 osi/13.8"w.c./34.5 mbar
90 (2.41)
Burning Natural Gas
osi
0.2 0.3 0.9
1
4
9
16
30
"w.c. mbar
1.7
6.9 17.2 545
15.6
27.7
51.9 129
4.3 240
39
69
Main Air Flow, stoich. ratio
scfh
65
870
1220
1690 (45.2)
(Nm 3 /h)
(1.74)
(6.42)
(14.6)
(23.3)
(32.6)
Atom. Air Flow @ 8 osi/35.5 mbar stoich. ratio
scfh
90
90
90
90
75
50
(Nm 3 /h)
(2.41)
(2.41) 465 12.4)
(2.41)
(2.41) 1095 (29.3)
(2.00) 1430 (38.2)
(1.34) 1875 (50.1)
† Total Air Flow, stoich, ratio
scfh
290
770
(Nm 3 /h)
(7.75)
(20.6)
Gas Flow stoich. ratio
scfh
29
47
77
110
143
187
(Nm 3 /h)
(.78)
(1.26)
(2.06)
(2.94)
(3.82)
(5.00)
Gas pressure stoich. ratio Tile pressure stoich. ratio
"w.c. (mbar) "w.c. (mbar)
0.4 (0.9) 0.26 (0.6)
1.1 (2.8) 0.7 (1.7)
3.1 (7.8) 5.6 (14.0) 9.7 (24.1)
17.3 (43.1) 10.7 (26.7)
2.0 (5.0) 3.6 (9.0)
6.1 (15.1)
‡ Max. % XSAir Stablility UV Flame supervision
20 20 25
100 100
250 250
400 400
400 400
400 400
Max. % XSAir Ignition--pilot
Max. % XSFuel
25
25
25
25
0
Flame length stoich. ratio Flame diameter stoich. ratio
inch (mm) inch (mm)
2.0 (51) 1.0 (25)
3.0 (76) 1.0 (25)
6.0 (152) 8.0 (203) 9.0 (229)
10.0 (254)
1.0 (25)
1.0 (25)
1.0 (25)
1.0 (25)
Burning #2 Oil
Main Air Flow, stoich. ratio
scfh
85
230
545
865
1200 (32.1)
1680 (44.9)
(Nm 3 /h)
(2.27)
(6.15)
(14.6)
(23.1)
§ Atom. Air Flow @ 30 osi/129 mbar stoich. ratio
scfh
195
190
190
185
180
175
(Nm 3 /h)
(5.21)
(5.08)
(5.08)
(4.95) 1180 (31.5) 0.84 (3.18)
(4.81) 1520 (40.6)
(4.68) 1990 (53.2)
† Total Air Flow, stoich, ratio
scfh
415
555
870
(Nm 3 /h)
(11.1) 0.29 (4.10)
(14.8) 0.39 (1.48)
(23.3)
Oil Flow stoich. ratio
gph (lph)
0.62
1.08
1.42
(2.35)
(4.09)
(5.38)
Oil pressure stoich. ratio Tile pressure stoich. ratio
psi (mbar) "w.c. (mbar)
0.4 (6.9) 0.08 (0.2)
0.1 (6.9) 0.4 (1.0)
0.1 (6.9) 0.2 (13.8) 0.35 (24.1) 0.69 (47.6)
1.3 (3.2)
2.4 (6.0)
3.7 (9.2)
6.2 (15.4)
‡ Max. % XSAir Stability UV Flame supervision
20 20 25
50 50 25
50 50 25
110 110
200 200
250 250
Max. % XSAir. Ignition--pilot
Max. % XSFuel
25
25
0
Flame Length stoich. ratio Flame diameter stoich. ratio
inch (mm) inch (mm)
2.0 (51) 1.0 (25)
2.0 (51) 1.0 (25)
4.0 (102) 8.0 (203) 9.0 (229)
11 (279) 2.0 (51)
1.0 (25)
2.0 (51)
2.0 (51)
† Total air is main air plus atomizing air plus 135 scfh (3.6 Nm 3 /h) 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. § 30 osi/52"w.c./129 mbar is recommended atomizing air pressure for oil, but all burner will operate on oil with 22 osi/38"w.c./95 mbar atomizing air (at the burner) and 10% or more excess air. • Direct spark ignition on oil is not considered a viable lighting method due to the lack of repeatability.
NOTE: Test results above were obtained with pilot air regulated at 2 osi/3.5"w.c./9 mbar above the tile pressure, resulting in constant flow of 135-140 scfh (3.6-3.7 Nm 3 /h) air. Because of the small size of this burner, pilot air must not be run any higher.
Velocity: The distance (in inches) from the tile outlet to the point where the tile velocity pressure is 0.1"w.c. (1259 fpm) is 40" on gas and 48" on oil (firing stoichiometric with 16 osi main air pressure).
Bulletin 6435 Page 9
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