AERCO BMK 2.0 LN Dual Fuel Serial G-11-2402 and UP - Manual (Page 51)

CHAPTER 4: INITIAL START-UP
PR2: 04/22/13 Page 51 of 160
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
Table 4-8: Combustion Oxygen Level at
80%
Valve Position
Oxygen %
± 0.2
Carbon Monoxide
NOx
4.8 % <150 ppm <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 80%, press the ENTER key to store the
selected blower output voltage for 80% valve position.
NOTE
The remaining steps basically repeat the procedures in steps 19 through
26 for valve positions of 60%, 45%, 30% and 21%. 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.
27.
Press the ▲ arrow key until SET Valve Position appears on the C-MORE display.
28. Press the CHANGE key. SET Valve Position will begin to flash.
29.
Press the ▼ arrow key until the SET Valve Position reads 60% and press the ENTER key.
30.
Press the down ▼ arrow key until CAL Voltage 60% is displayed.
31. Press the CHANGE key. CAL Voltage 60% will begin to flash.
32. 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.
Table 4-9: Combustion Oxygen Level at
60%
Valve Position
Oxygen %
± 0.2
Carbon Monoxide
NOx
5.0 % <150 ppm <100 ppm
33. 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.
34. Once the oxygen level is within the specified range at 60%, press the ENTER key to store the
selected blower output voltage for the 60% valve position.
35.
Press the ▲ arrow key until SET Valve Position appears on the C-MORE display.
36. Press the CHANGE key. SET Valve Position will begin to flash.
37.
Press the ▼ arrow key until the SET Valve Position reads 45%, then press the ENTER key.
38.
Press the ▼ arrow key until CAL Voltage 45% is displayed.
39. Press the CHANGE key. CAL Voltage 45% will begin to flash.