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
48
of
153
PROPANE Combustion Calibration Instructions
18. Compare the
O
2
value in the
Target
and
Reading
columns.
If they don’t match, adjust the
Blower Voltage
until the
O
2
value in both
columns
match; use either the
+
or
–
controls, or
press on the field and type the value directly.
19. If adjusting the blower voltage is not sufficient to get the
O
2
Reading
column to match the
Target
column, then repeat Step 15 to adjust the gas pressure up or down within the range
shown in the table, then repeat Step 18. Continue repeating Steps 15 and 18 until the gas
pressure is within the range in Table 4-4 and the
O
2
Reading
column to matches the
Target
column.
20.
Enter the downstream manometer’s gas pressure reading in the
Downstream Gas
Pressure
field. Note, this field appears only when
Valve Position %
=
100%
.
21. Compare the measured nitrogen oxide (NOx) and carbon monoxide (CO) readings to the
Target
values (shown in the Table 4-5 as a reference only)
. If you are not in a “NOx-
limited” area and/or do not have a NOx measurement in your analyzer, set the O
2
to the
value in the
Oxygen (O
2
) %
column in the table below.
TABLE 4-5: PROPANE Calibration Readings at 100% Valve Position
Model
Oxygen (O
2
) %
Nitrogen Oxide (NOx)
Carbon Monoxide (CO)
750 & 1000
5.5% ± 0.2%
≤100 ppm
<150 ppm
1500
5.2% ± 0.2%
≤100 ppm
<150 ppm
2000
6.0% ± 0.2%
≤100 ppm
<150 ppm
2500
5.0% ± 0.2%
≤100 ppm
<150 ppm
3000
5.2% ± 0.2%
≤100 ppm
<150 ppm
5000
5.5% ± 0.5%
≤100 ppm
<100 ppm
6000
5.0% ± 0.5%
≤100 ppm
<100 ppm
NOTE:
These instructions assume that the
inlet air temperature is between 50°F and 100°F (10°C
– 37.8°C)
. If NOx readings exceed the target values in Table 4-4, above, or Table 4-6, below,
increase the O
2
level up to 1% higher than the Target value. You must then record the
increased O
2
value on the Combustion Calibration sheet.
22. On Benchmark 3000 - 6000 units
only
, record the manifold (downstream) gas pressure at
100%. This value will be used in Section 5.2.2:
Low Pressure Gas Test
, and Section 5.3.2:
High Pressure Gas Test
.
23. Once the O
2
level is within the specified range at 100%:
•
Enter the
Flame Strength
,
NOx
and
CO
readings from the Combustion Analyzer
and multi-
meter in the Manual Combustion Calibration screen’s
Reading
column.
•
Enter the same values, plus the
O
2
value, on the Combustion Calibration Data Sheet
provided with the unit.
24. Lower the Valve Position to the next calibration point using the
(Left) arrow key (if using
Method 1 in step 11) or the Fine Valve Position
– (Minus) key (if using Method 2).
•
BMK750P & 1000P:
80%
•
BMK1500/2000/2500 DF & P:
70%
•
BMK3000 DF & P:
85%
•
BMK5000P & 6000P:
70%