Natural Gas Manual Combustion Calibration - Watts Aerco Benchmark Series Operation And Service Manual

Benchmark Platinum-Edge: Operation-Service Manual
SECTION 4 – INITIAL START-UP

4.4.1 NATURAL GAS Manual Combustion Calibration

These instructions apply only to units running NATURAL GAS.
NATURAL GAS Manual Combustion Calibration Instructions
1. Ensure the Edge Controller's Enable/Disable switch is set to Disable.
2. Open the water supply and return valves to the unit and ensure that the system pumps are
running.
3. Open the NATURAL GAS supply valve to the unit.
4. Turn external AC power to the unit ON.
5. On the Controller, go to: Main Menu  Calibration  Manual Combustion. If necessary,
enter a technician level password.
6. The first Manual Combustion Calibration screen appears lists the three steps that must
be completed before continuing.
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 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 Pre-Installation 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 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.
OMM-0137_D • GF-211 • 7/16/2019
Figure 4-5: Choose NOx Requirement
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