AERCO KC1000 Low NOx Boiler equipped with C-More 2003 - Manual (Page 35)

INITIAL START-UP
4-5
Table 1
Combustion Oxygen Levels for a 30%
Firing Rate
Inlet Air
Temp
Oxygen
(±0.2%)
Carbon
Monoxide *NOx
-25°F 7.8% <100 ppm <30 ppm
-10°F 7.5% <100 ppm <30 ppm
0°F 7.4% <100 ppm <30 ppm
10°F 7.2% <100 ppm <30 ppm
25°F 6.9% <100 ppm <30 ppm
40°F 6.5% <100 ppm <30 ppm
55°F 6.4% <100 ppm <30 ppm
70°F 6.2% <100 ppm <30 ppm
85°F 5.9% <100 ppm <30 ppm
100°F 5.7% <100 ppm N/A
* NOx readings corrected to 3% oxygen.
Table 2
Combustion Oxygen Levels for a 16%
Firing Rate
Inlet Air
Temp
Oxygen
(±0.2%)
Carbon
Monoxide *NOx
-25°F <10% <100 ppm <30 ppm
-10°F <10% <100 ppm <30 ppm
0°F <10% <100 ppm <30 ppm
10°F <10% <100 ppm <30 ppm
25°F <10% <100 ppm <30 ppm
40°F <10% <100 ppm <30 ppm
55°F <10% <100 ppm <30 ppm
70°F <10% <100 ppm <30 ppm
85°F <10% <100 ppm <30 ppm
100°F <10% <100 ppm N/A
* NOx readings corrected to 3% oxygen.
Table 3
Combustion Oxygen Levels for a 100%
Firing Rate With Cold Air Damper
Inlet Air
Temp
Oxygen
(±0.2%)
Carbon
Monoxide *NOx
-25°F 6.7 <100 ppm <30 ppm
-10°F 6.5 <100 ppm <30 ppm
0°F 6.4 <100 ppm <30 ppm
10°F 6.3 <100 ppm <30 ppm
25°F 6.2 <100 ppm <30 ppm
40°F 6.1 <100 ppm <30 ppm
55°F 5.9 <100 ppm <30 ppm
70°F 5.8 <100 ppm <30 ppm
85°F 5.6 <100 ppm <30 ppm
100°F 4.7 <100 ppm N/A
* NOx readings corrected to 3% oxygen.
Table 3A
Combustion Oxygen Levels for a 100%
Firing Rate Without Cold Air Damper
Inlet Air
Temp
Oxygen
(±0.2%)
Carbon
Monoxide *NOx
55°F 7.5% <100 ppm <30 ppm
70°F 6.5% <100 ppm <30 ppm
85°F 5.5% <100 ppm <30 ppm
100°F 4.5% <100 ppm N/A
* NOx readings corrected to 3% oxygen.
IMPORTANT
The unit is shipped from the factory set up for
either natural gas or propane, as specified by the
Style No. on the Sales Order. If desired, the unit
can be easily switched from natural gas to
propane (or vice versa) using the regulator
spring change procedure in Appendix J.
Since the required gas supply pressures for
propane differ from those required for natural
gas, the Propane Combustion Calibration
procedures are repeated in their entirety in
paragraph 4.4. It should be noted that the
Combustion Calibration data in Tables 1, 2, 3
(and 3A) apply to both natural gas and propane
units.
4.4 PROPANE COMBUSTION
CALIBRATION
The KC-1000 is shipped combustion calibrated
from the factory. Recalibration as part of a start-
up is necessary due to differences in altitude,
gas BTU content, gas supply piping and supply
regulators. Factory test data sheets are shipped
with each unit as a reference.
Prior to starting these procedures, ensure that
the KC1000 has been set up as specified in
paragraphs 4.2 through 4.2.4.
The following combustion calibration procedure
closely follows the factory procedure. By
following this procedure, readjustment of
combustion will be kept to a minimum.