Benchmark Platinum-Edge [ii]: Operation-Service Manual
SECTION 4
– INITIAL START-UP
OMM-0137_J
• 12/20/2022 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page
49
of
167
PROPANE Combustion Calibration Instructions
11. The main
Manual Combustion Calibration
screen appears. It provides two methods to
ramp the unit’s valve position up or down:
•
Method 1
: Toggle through the pre-set calibration points till you reach the desired
valve position, then press
Go
to go to that point (left image below).
•
Method 2
: Enable
Fine VP Step
, then manually press the
+
or
–
buttons once per
1% to bring the unit to the desired valve position (right image below).
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). Adjust 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
6.3
” W.C. ± 0.2” W.C. (1.58 kPa ± 0.05 kPa)
BMK750DF
See NOTE 2
BMK1000DF
1.8” W.C. ± 0.1” W.C. (0.45 kPa ± 0.02 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)
4000DF & 4000P
1.5” W.C. ± 0.1” W.C. (1.12 kPa ± 0.02 kPa)
5000NDF & 5000NP
1.5” W.C. ± 0.1” W.C. (1.12 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)
NOTE 2
: For BMK750 Dual Fuel, measure Propane Gas Manifold Pressure at 85% Fire
Rate. Range shall be 1.8" +/- 0.1" W.C. (0.45 kPa ± 0.02 kPa)
PRE-SET CALIBRATION CONTROLS
VALVE POSITION CONTROLS
