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
47
of
153
PROPANE Combustion Calibration Instructions
PRESET CALIBRATION POINTS METHOD
FINE VP STEP METHOD
Figure 4-9: 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
successfully 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 gas pressure on the
downstream
side of the SSOV is within the required
range shown in Table 4-4.
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 4-4: PROPANE Gas Pressure Range @ 100% Fire Rate
Model
Nominal Gas Pressure
BMK750P
3.9” W.C. ± 0.2” W.C. (0.97 kPa ± 0.05 kPa)
BMK1000P
7.6” W.C. ± 0.2” W.C. (1.89 kPa ± 0.05 kPa)
1500DF & 1500P
1.4” W.C. ± 0.1” W.C. (0.35 kPa ± 0.02 kPa)
2000DF & 2000P
2.5” W.C. ± 0.1” W.C. (0.62 kPa ± 0.02 kPa)
2500DF & 2500P
2.0” W.C. ± 0.1” W.C. (0.50 kPa ± 0.02 kPa)
3000DF & 3000P
1.6” W.C. ± 0.1” W.C. (0.40 kPa ± 0.02 kPa)
5000DF & 5000P
2.0” ± 0.2” W.C. (0.50 to 0.05 kPa)
6000DF & 6000P
4.2” ± 0.2” W.C. (1.05 to 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
17.
Compare the combustion analyzer’s oxygen (O
2
) reading to the
O
2
value in the
Reading
column (Figure 4-9). If they differ, go to the
Main Menu
→
Calibration
→
Input/Output
→
O2 Sensor
screen and adjust the
O2 Offset
parameter, up to
±3%
, to make the on-board
O
2
sensor match the value from the combustion analyzer. If your combustion analyzer is
correctly calibrated, and the on-board O
2
sensor cannot be made to match the analyzer,
the sensor may be defective and need to be replaced.
PRE-SET CALIBRATION CONTROLS
VALVE POSITION CONTROLS
