achieved or is too high while the main gas control valve is fully open,
two adjustments can be made:
a. the main gas control valve can be adjusted open or closed, or
b. the main gas pressure regulator can be adjusted higher or lower.
3. The main gas flame should have a slightly blue periphery and a
somewhat yellowish center at high fire; refer to Table 4.2 below
for flame length estimates.
For Oil Burners
1. Drive the main oil control valve to high fire.
2. Measure the oil pressure drop at high fire and compare to the
appropriate chart in the Appendix. If the maximum input is not
achieved or is too high while the main oil control valve is fully open,
two adjustments can be made:
a. the main oil control valve can be adjusted open or closed, or
b. the main oil pressure regulator can be adjusted higher or lower.
3. Note the atomizing air pressure. If modulating control is used,
the atomizing pressure should be approximately 20 psig above
the oil pressure without exceeding 50/55 psig.; refer to
“Modulating Control” on page 3-10 for further details.
4. The high fire oil flame should be bright yellow; refer to Table 4.2
below for flame length estimates.
1. Once the high and low fire conditions have been set, cycle the burner
from high to low fire several times to check repeatability of settings.
2. Shut down the burner and relight to ensure automated pilot and
main flame ignition operates correctly.
3. Check all safety interlocks and limits to ensure proper operation.
4-5
Step 8:
Verify settings
Burner
MI or HI*
Burner
Input
Flame
MI*
HI*
Size
(MMBtu/hr.) Dia. (in.) Burner Burner
6V
6.0
30
6.0
5.0
8V
10.5
32
7.0
6.0
10V
17.0
36
8.0
7.0
12V
23.0
40
9.0
8.0
14V
32.0
46
10.5
9.0
16V
42.0
52
12.0
10.0
18V
55.0
58
13.0
11.0
22V
78.0
64
15.0
13.0
24V
90.0
68
16.0
14.0
28V
125.0
78
18.0
16.0
32V
160.0
86
20.0
17.0
36V
210.0
96
24.0
20.0
* MI means Medium Intensity and HI means High Intensity.
Table 4.2
Flame Sizes
Flame Length (ft.)
Note:
Flame lengths are measured
from the open end of the
combustor.
Flame lengths are estimates
based on general operating
conditions and are useful for
design purposes. Actual flame
lengths will depend on
chamber size and presence of
secondary air.
Eclipse Vortometric Burner v2.00, Installation Guide 248, 4/10/07