AERCO BMK 3.0 LN Natural Gas July 2011 - Manual (Page 39)

INITIAL START-UP
4-5
37. Press the ▼ arrow key until CAL Voltage
40% is displayed.
38. Press the CHANGE key. CAL Voltage 40%
will begin to flash.
39. The oxygen level at the 40% 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
40% Valve Position
Oxygen %
± 0.2
Carbon
Monoxide NOx
7.8 % <50 ppm <20 ppm
40. 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
▼ arro w key decreases the oxygen level.
41. Once the oxygen level is within the specified
range at 40%, press the ENTER key to store
the selected blower output voltage for the
40% valve position.
42. Press the ▲ arrow key until SET Valve
Position appears on the C-MORE display.
43. Press the CHANGE key. SET Valve Position
will begin to flash.
44. Press the ▼ arrow key until the SET Valve
Position reads 30%, then press the ENTER
key.
45. Press the ▼ arrow key until CAL Voltage
30% is displayed.
46. Press the CHANGE key. CAL Voltage 30%
will begin to flash.
47. 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.
Combustion Oxygen Level at
30% Valve Position
Oxygen %
± 0.2
Carbon
Monoxide NOx
8.0 % <50 ppm <20 ppm
48. 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
▼ arro w key decreases the oxygen level.
49. 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.
50. Press the ▲ arrow key until SET Valve
Position appears on the C-MORE display.
51. Press the CHANGE key. SET Valve Position
will begin to flash.
52. Press the ▼ arrow key until the SET Valve
Position reads 14%, then press the ENTER
key.
53. Press the ▼ arrow key until CAL Voltage
14% is displayed.
54. Press the CHANGE key. CAL Voltage 14%
will begin to flash.
55. The oxygen level at the 14% 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
14% Valve Position
Oxygen %
± 0.2
Carbon
Monoxide NOx
8.5 % <50 ppm <30 ppm
56. 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
▼ arro w key decreases the oxygen level.
57. Once the oxygen level is within the specified
range at 14%, press the ENTER key to store
the selected blower output voltage for 14%
Valve Position.
IMPORTANT
Repeat steps 18 through 57 until the
blower output voltage does not require
adjustment when sequencing from 70% to
14%.
58. This completes the natural gas combustion
calibration procedure.