AERCO BMK 1.5 LN Dual Fuel Feb 2013 - Manual (Page 51)

CHAPTER 4: INITIAL START-UP
PR2: 05/09/12 Page 51 of 162
Benchmark 1.5LN Dual-Fuel Low NOx Boiler
Operation and Maintenance Manual
OMM-0041_0C
GF-121
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 • Ph: 800-526-0288
39. Press the ▼ arrow key until the SET Valve Position reads 45%, then press the
ENTER key.
40. Press the ▼ arrow key until CAL Voltage 45% is displayed.
41. Press the CHANGE key. CAL Voltage 45% will begin to flash.
42. The oxygen level at the 45% 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 4-4: Combustion Oxygen Levels for a 45% Air/Fuel Valve Position
Oxygen %
± 0.2
Carbon Monoxide NOx
7.0 % <50 ppm <30 ppm
43. 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.
44. Once the oxygen level is within the specified range at 45%, press the ENTER key to
store the selected blower output voltage for the 45% valve position.
45. Press the ▲ arrow key until SET Valve Position appears on the C-MORE display.
46. Press the CHANGE key. SET Valve Position will begin to flash.
47. Press the ▼ arrow key until the SET Valve Position reads 30%, then press the
ENTER key.
48. Press the ▼ arrow key until CAL Voltage 30% is displayed.
49. Press the CHANGE key. CAL Voltage 30% will begin to flash.
50. The oxygen level at the 30% 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 4-5: Combustion Oxygen Levels for a 30% Air/Fuel Valve
Position
Oxygen %
± 0.2
Carbon Monoxide NOx
7.0 % <50 ppm <30 ppm
51. 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.
52. Once the oxygen level is within the specified range at 30%, press the ENTER key to
store the selected blower output voltage for the 30% valve position.
53. Press the ▲ arrow key until SET Valve Position appears on the C-MORE display.
54. Press the CHANGE key. SET Valve Position will begin to flash.
55. Press the ▼ arrow key until the SET Valve Position reads 16%, then press the
ENTER key.