AERCO BMK 2.0 LN Dual Fuel Nov 2010 - Manual (Page 38)

INITIAL START-UP
BRASS HEX
HEAD CAP
(REMOVE TO
ACCESS GAS
PRESSURE
REGULATOR
ADJUSTMENT)
SSOV ACTUATOR WITH REGULATOR
Figure 4-4
Regulator Adjustment Screw Location
15. If necessary, adjust the iris air damper
shown in Figure 4-4 until the oxygen level is
within the range specified in Table 4-1.
AIR
INLET
IRIS AIR
DAMPER
(SEE DETAIL “A”)
USE 1/2"
WRENCH TO
INCREASE (CW)
OR DECREASE
(CCW) INLET AIR
IRIS ADJUSTMENT
DETAIL “A”
Figure 4-4
Iris Air Damper Location/Adjustment
16. Once the oxygen level is within the specified
range at 100%, lower the valve position to
80%.
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 80%, 60%, 45%, 30% and
20% 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 will
begin to flash.
21. Press the ▲ arrow key until the SET Valve
Position reads 80%. Press the ENTER key.
22. Next, press the down (▼) arrow key until
CAL Voltage 80% is displayed.
23. Press the CHANGE key and observe that
CAL Voltage 80% is flashing.
24. The oxygen level at the 80% 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
80% Valve Position
Oxygen %
± 0.2
Carbon
Monoxide NOx
6.0 % <100 ppm < 20 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.
4-4