CHAPTER 4: INITIAL START-UP
Page
46
of
158
PR2: 04/22/13
Benchmark 2.0LN Dual-Fuel Low NOx Boiler
Operation and Maintenance Manual
OMM-0052_0E
GF-127
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, NY 10913
•
Ph: 800-526-0288
Figure 4-5: Iris Air Damper Location/Adjustment
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 Position
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.
Table 4-2: Combustion Oxygen Levels for a
80%
Air/Fuel Valve Position
Oxygen %
± 0.2
Carbon Monoxide
NOx
6.0 %
<100 ppm
<20 ppm
