Benchmark Platinum-Edge [II]: Operation-Service Manual
SECTION 4
– INITIAL START-UP
OMM-
0137_E • GF-211 • 12/13/2019 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page
41
of
153
NATURAL GAS Manual Combustion Calibration Instructions
PRESET CALIBRATION POINTS METHOD
FINE VP STEP METHOD
Figure 4-6: Manual Combustion Calibration Screens
12. Set the
Controller’s Enable/Disable switch to
Enable
.
13. Change the valve position to 30%, press the
Go
button, then verify that the unit has ignited
and is operating as expected.
14. Use the
(Right) arrow key to change the valve position to
100%
, then press
Go
.
15. Verify that the manifold gas pressure, on the
downstream
side of the SSOV, is within the
required range shown in Table 4-1.
If it isn’t, remove the brass hex nut on the SSOV
actuator to access the gas pressure adjustment screw (Figure 4-3). Make adjustments
using a flat-tip screwdriver, slowly rotating the gas pressure adjustment (in 1/4-turn
increments)
clockwise
to
increase
gas pressure or
counterclockwise
to
reduce
it. The
resulting gas pressure reading on the
downstream
manometer should fall in the range
listed below.
TABLE 4-1: REFERENCE Manifold Gas Pressure Range @ 100% Fire Rate
Model
Single Fuel
Dual Fuel
BMK750
2.0” ± 0.2” W.C. (0.50 ± 0.05 kPa)
-
BMK1000
2.4” ± 0.4” W.C. (0.60 ± 0.10 kPa)
-
BMK1500
3.6” ± 0.1” W.C. (0.90 ± 0.02 kPa)
3.6” ± 0.1” W.C. (0.90 ± 0.02 kPa)
BMK2000
3.4” ± 0.2” W.C. (0.85 ± 0.05 kPa)
6.3” ± 0.1” W.C. (1.57 ± 0.02 kPa)
BMK2500
2.0” ± 0.1” W.C. (0.50 ± 0.02 kPa)
5.8” ± 0.1” W.C. (1.44 ± 0.02 kPa)
BMK3000
2.1” ± 0.2” W.C. (0.52 ± 0.05 kPa)
6.0” ± 0.2” W.C. (1.49 ± 0.05 kPa)
BMK4000
3.0” ± 0.2” W.C. (0.75 ± 0.05 kPa)
N/A
BMK5000
6.3” ± 0.2” W.C. (1.56 ± 0.05 kPa)
6.3” ± 0.2” W.C. (1.56 ± 0.05 kPa)
BMK5000
(Low Gas Pressure)
2.6” ± 0.2” W.C. (0.65 ± 0.02 kPa)
-
BMK6000
7.9” ± 0.2” W.C. (1.97 ± 0.05 kPa)
7.9” ± 0.2” W.C. (1.97 ± 0.05 kPa)
BMK6000
(Low Gas Pressure)
1.9
” ± 0.2” W.C. (0.50 ± 0.05 kPa)
-
16. With the valve position still at 100%, insert the combustion analyzer probe into the exhaust
manifold probe opening (see Figure 4-2a
– 4-2c in Section 4.2.3) and allow enough time
for the combustion analyzer reading to stabilize.
PRE-SET CALIBRATION CONTROLS
FINE VALVE POSITION CONTROLS
