AERCO BMK 1.5 LN Dual Fuel Feb 2013 - Manual (Page 54)

CHAPTER 4: INITIAL START-UP
Page 54 of 162 PR2: 05/09/12
Benchmark 1.5LN Dual-Fuel Low NOx Boiler
Operation and Maintenance Manual
OMM-0041_0C
GF-121
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 • Ph: 800-526-0288
Oxygen %
± 0.2
Carbon Monoxide
5.2 % <100 ppm
15. If the oxygen level is not within the specified range, adjust the level using the ▲ and
▼ arrow keys. This will adjust the output voltage to the blower motor as indicated on
the display. Pressing the ▲ arrow key increases the oxygen level and pressing the
down ▼ arrow key decreases the oxygen level.
16. Once the oxygen level is within the specified range at 70%, lower the valve position
to 60%.
NOTE
The remaining combustion calibration steps are performed
using the Combustion Cal Menu included in the C-More
Control System. The combustion calibration control functions
will be used to adjust the oxygen level (%) at valve positions
of 60%, 45%, 30% and 16% as described in the following
steps. These steps assume that the inlet air temperature is
within the range of 50°F to 100°F.
17. Press the MENU Key on the front panel of the C-MORE and access the Setup menu.
Enter password 6817 and then press the ENTER key.
18. Press the MENU Key on the front panel of the C-MORE until Combustion Cal Menu
appears on the C-More display.
19. Press the ▲ arrow key until SET Valve Position appears on the C-MORE display.
20. Press the
CHANGE key. SET Valve Position will begin to flash.
21. Press the ▲ arrow key until the SET Valve Position reads 60%. Press the ENTER
key.
22. Next, press the down (▼) arrow key until CAL Voltage 60% is displayed.
23. Press the
CHANGE key and observe that CAL Voltage 60% is flashing.
24. The oxygen level at the 60% valve position should be as shown below. Also, ensure
that the carbon monoxide (CO) and nitrogen oxide (NOx) readings do not exceed the
values shown.
Combustion Oxygen Level at 60% Valve Position
Oxygen %
± 0.2
Carbon Monoxide
5.3 % <100 ppm
25. If the oxygen level is not within the specified range, adjust the level using the ▲ and
▼ arrow keys. This will adjust the output voltage to the blower motor as indicated on
the display. Pressing the ▲ arrow key increases the oxygen level and pressing the
down ▼ arrow key decreases the oxygen level.
26. Once the oxygen level is within the specified range at 60%, press the ENTER key to
store the selected blower output voltage for 60% valve position.
NOTE
The remaining steps basically repeat the procedures in steps
19 through 26 for valve positions of 45%, 30% and 16%.
However, since oxygen levels vary, these steps are repeated