AERCO BMK 1.5 LN October 2012 - Manual (Page 53)

CHAPTER 4
INITIAL START-UP
PR1: 10/18//12 AERCO International Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 • Ph: 800-526-0288 Page 53 of 166
GF-120
OMM-0041 0E
Benchmark 1.5LN Low NOx Boiler
Installation, Operation and Maintenance Manual
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 80%, 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.
Press the MENU key on the front panel of the C-MORE and access the Setup menu. 16.
Enter password 6817 and then press the ENTER key.
Press the MENU key on the front panel of the C-MORE until Combustion Cal Menu 17.
appears on the C-More display.
Press the ▲ arrow key until SET Valve Position appears on the C-MORE display.
18.
Press the CHANGE key. SET Valve Position will begin to flash. 19.
Press the ▲ arrow key until the SET Valve Position reads 80%. Press the ENTER key.
20.
Next, press the down (▼) arrow key until CAL Voltage 80% is displayed.
21.
Press the CHANGE key and observe that CAL Voltage 80% is flashing. 22.
The oxygen level at the 80% valve position should be as shown below. Also, ensure that 23.
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 <30 ppm
If the oxygen level is not within the specified range, adjust the level using the ▲ and ▼
24.
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.
Once the oxygen level is within the specified range at 80%, press the ENTER key to 25.
store the selected blower output voltage for the 80% valve position.
NOTE
The remaining steps basically repeat the procedures in steps 18 through
25 for valve positions of 60%, 45%, 30% and 16%. However, since oxygen
levels vary, these steps are repeated in their entirety. When 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.
Press the ▲ arrow key until SET Valve Position appears on the C-MORE display.
26.
Press the CHANGE key. SET Valve Position will begin to flash. 27.
Press the ▼ arrow key until the SET Valve Position reads 60% and press the ENTER
28.
key.