Watts AERCO Benchmark BMK5000 Operation And Service Manual page 42

Benchmark Platinum-Edge [ii]: Operation-Service Manual
SECTION 4 – INITIAL START-UP
NATURAL GAS Manual Combustion Calibration Instructions
Figure 4-4: First Manual Combustion Calibration Screen
7. Connect the gas pressure manometer to the upstream side of the gas train's SSOV (see
Section 4.2.2), and then connect the Combustion Analyzer and Multimeter (per Section
4.2.3) and ensure that the heating loop is capable of dissipating sufficient heat at full fire.
8. Verify that the incoming (upstream) gas pressure to the unit is within the allowable range
(see the Benchmark Gas Supply Guide (TAG-0047, GF-2030)).
9. Once you have completed the previous step, move the manometer (or use a secondary
one) to the downstream side of the SSOV and press Next to continue.
10. Choose the NOx requirement for this installation: None, <= 20 PPM or <=9 PPM.
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).
OMM-0137_J •
12/20/2022
Figure 4-5: Choose NOx Requirement
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