Engineering Data | Tempest ® III High Velocity
NORTH AMERICAN 6435 DUAL-FUEL BURNER ENGINEERING DATA, COLD AIR
6435-3 with Cold Main Air, Cold Atomizing Air
Main Air Pressure osi/"w.c./mbar
Not Burning Main Air Flow scfh (Nm 3 /h)
4120 (110) 210 (5.61) 110 (2.94)
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
Burning Natural Gas
osi
0.2 0.3 0.9 235
1
4
9
16
30
"w.c. mbar
1.7
6.9 17.2 1530
15.6
27.7
51.9 129
4.3
39
69
Main Air Flow, stoich. ratio
scfh
680
2490 (66.6)
3420 (91.4)
4870 (130)
(Nm 3 /h)
(6.28)
(18.2)
(40.9)
Atom. Air Flow @ 8 osi/35.5 mbar stoich. ratio
scfh
110
100
95
85
70
65
(Nm 3 /h)
(2.94)
(2.67)
(2.54) 1760 (47.0)
(2.27) 2710 (72.4)
(1.87) 3620 (96.8)
(1.74) 5100 (136)
† Total Air Flow, stoich, ratio
scfh
480
915
(Nm 3 /h)
(12.8)
(24.5)
Gas Flow stoich. ratio
scfh
48
92
176
271
362
510
(Nm 3 /h)
(1.28)
(2.46)
(4.70)
(7.24)
(9.68)
(13.6)
Gas pressure stoich. ratio Tile pressure stoich. ratio
"w.c. (mbar) "w.c. (mbar)
0.35 (0.9) 0.17 (0.4)
1.6 (3.9) 1.0 (2.6)
3.9 (4.0) 9.9 (7.3)
18.1 (21.1)
21.5 (53.4) 15.2 (37.9)
2.8 (6.9) 5.0 (12.5) 8.7 (21.5)
‡ Max. % XSAir Stablility & UV Flame supervision
100 100 15+
400 400
400 400
400 400
400 400
400 400
‡ Max. % XSAir Ignition--pilot
Max. % XSFuel
15+
15+
15+
15
0
Flame length stoich. ratio Flame diameter stoich. ratio
inch (mm) inch (mm)
9.0 (229) 2.5 (64)
9.0 (229)
14.0 (356) 14.0 (356) 12.0 (306) 12.0 (306)
2.0 (51)
2.5 (64)
2.5 (64)
3.0 (76)
2.5 (64)
Burning #2 Oil
Main Air Flow, stoich. ratio
scfh
300
665
1430 (38.2)
2320 (65.0)
3180 (85.0)
4510 (121)
(Nm 3 /h)
(8.02)
(17.8)
§ Atom. Air Flow @ 30 osi/129 mbar stoich. ratio
scfh
205
205
200
190
180
170
(Nm 3 /h)
(5.48) 640 (17.1) 0.46 (1.74)
(5.48) 1000 (26.7)
(5.35) 1760 (65.8)
(5.08) 2460 (51.9)
(4.81) 3500 (93.6)
(4.54) 4820
† Total Air Flow, stoich, ratio
scfh
(Nm 3 /h)
(129)
Oil Flow stoich. ratio
gph (lph)
0.71
1.26
1.9
2.5
3.4
(2.69)
(4.77)
(7.19)
(9.46)
(12.9)
Oil pressure stoich. ratio Tile pressure stoich. ratio
psi (mbar) "w.c. (mbar)
0.1 (6.9)
0.5 (34.5)
1.1 (76)
0.9 (62)
1.2 (83)
2.2 (152)
0.26 (0.6)
1.0 (2.6)
3.3 (8.2) 6.2 (15.5) 10.7 (26.7) 20.6 (51.3)
‡ Max. % XSAir Stability & UV Flame supervision
25 25
75 75
225 225
400 400
400 400
400 300
Max. % XSAir. Ignition--pilot
Max. % XSFuel
15+
15+
15+
15+
15+
0
Flame Length stoich. ratio Flame diameter stoich. ratio
inch (mm) inch (mm)
7.0 (178) 2.0 (51)
7.0 (178) 2.5 (64)
12.0 (305) 14.0 (356) 12.0 (306) 16.0 (406)
2.5 (64)
2.5 (64)
2.5 (64)
3.0 (76)
† Total air is main air plus atomizing air plus 135 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. § 30 osi is recommended atomizing air pressure for oil, but all burners will operate on oil with 22 osi 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.
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 67" on gas and 68" on oil (firing stoichiometric with 16 osi main air pressure).
Bulletin 6435 Page 11
Made with FlippingBook flipbook maker