Aerco Benchmark 3.0LN Series, Installation, Operation & Maintenance Instructions Manual

Page: 38 / 127

4-4
INITIAL START-UP
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 air/fuel
valve positions of 70%, 50%, 45%, 30% and
14% as described in the following steps. These
steps assume that the inlet air temperature is
within the range of 50°F to 100°F.
16. 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.
17. Press the MENU Key on the front panel of
the C-MORE until Combustion Cal Menu
appears on the C-More display.
18. Press the
▲ arrow key until
SET Valve
Position appears on the C-MORE display.
19. Press the CHANGE key. SET Valve Position
will begin to flash.
20. Press the
▲ arrow key until the
SET Valve
Position reads 70% . Press the ENTER key.
21. Next, press the down (
▼) arrow key until
CAL Voltage 70% is displayed.
22. Press the CHANGE key and observe that
CAL Voltage 70% is flashing.
23. The oxygen level at the 70% 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
70% Valve Position
Oxygen %
± 0.2
Carbon
Monoxide NOx
6.0 % <100 ppm <30 ppm
24. 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.
25. Once the oxygen level is within the specified
range at 70%, press the ENTER key to store
the selected blower output voltage for the
70% valve position.
NOTE
The remaining steps basically repeat the
procedures in steps 18 through 25 for air/fuel
valve positions of 50%, 40%, 30% and 14%
open. However, since oxygen levels vary, these
steps are repeated in their entirety. W hen
performing these steps, also ensure that the
carbon monoxide (CO) and nitrogen oxide (NOx)
readings do not exceed the values shown for
each valve position.
26. Press the
▲ arrow key until
SET Valve
Position appears on the C-MORE display.
27. Press the CHANGE key. SET Valve Position
will begin to flash.
28. Press the
▼ arrow key until the
SET Valve
Position reads 50% and then press the
ENTER key.
29. Press the down
▼ arrow key until
CAL
Voltage 50% is displayed.
30. Press the CHANGE key. CAL Voltage 50%
will begin to flash.
31. The oxygen level at the 50% 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
50% Valve Position
Oxygen %
± 0.2
Carbon
Monoxide NOx
7.0 % <50 ppm <20 ppm
32. 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
▼ arrow key decreases the oxygen level.
33. Once the oxygen level is within the specified
range at 50%, press the ENTER key to store
the selected blower output voltage for the
50%
Valve Position .
34. Press the
▲ arrow key until
SET Valve
Position appears on the C-MORE display.
35. Press the CHANGE key. SET Valve Position
will begin to flash.
36. Press the
▼ arrow key until the
SET Valve
Position reads 40% , then press the ENTER
key.