ICI Caldaie ECOVAPOR Series, Инструкция по установке, использованию и техническому обслуживанию

Страница: 55 / 80

First commissioning
55
COMBUSTION SYSTEM CALIBRATION
The following equipment is necessary for the calibration of the combustion system:
–
combustion flue gas analyser (%O
2
, ppm CO, ppm NOx)
–
digital manometer.
The table shows the reference values with the steam generating system set at 10 bar.
The steam generating system is delivered already calibrated (gas valve setting, inverter setting, managing board setting) but,
during start-up, some adjustments may be required on the gas valve.
DESCRIPTION u.m.
ECOVAPOR
350 500 650 800 1000 1350 1700 2000 2500 3000
Fan Frequency
MIN Hz 11,5 ÷ 15 12 ÷ 15 14 ÷ 16 12 ÷ 15
START Hz 14 ÷ 20 20 ÷ 23 23 ÷ 26 14 ÷ 19
MAX Hz 50 ÷ 56 65 ÷ 70 70 ÷ 75 60 ÷ 66
CO2
MIN % 7,8 ÷ 8,3 7,8 ÷ 8,3 8,5 ÷ 9,0 8,5 ÷ 9,0
START % 9,0 ÷ 9,5 9,0 ÷ 9,5 9,0 ÷ 9,5 9,0 ÷ 9,5
MAX % 9,3 ÷ 9,8 9,3 ÷ 9,8 9,5 ÷ 10 9,5 ÷ 10
NOx
MIN < 40 < 40 < 40 < 50 < 50
MAX < 40 < 60 < 60 < 70 < 70
Gas Train Pressure MAX mbar 20 ÷ 25 20 ÷ 25 30 ÷ 60 30 ÷ 70
Pilot Flame Pressure START mbar 15 ÷ 35
Combustion Head Δp* MAX mbar 9 8,4 17,5 23,7
* The pressure difference between points A and B indicated in the fig. and detected by the generator set at 10 bar indicates that
the MAX flow thermal has been reached
1
4
3
2
1 Pressure test connection A
2 Pressure test connection B
3 Protective plate
4 Fastening screw
The pressure test connection (1) is positioned under the burner protective plate, hence a fastening screw has to be removed to
turn the plate as shown in the figure.
m
IMPORTANT
–
With the steam generator running at the Max Power and at a steam pressure of 10 bar, the NOx value must be < 70
mg/kwh.
–
On the generators equipped with manhole, during the first start-up, it is essential to progressively tighten the two nuts
of the hatch while pressure increases. Otherwise, the installation area may become dangerous for the operators in
charge, due to steam seeping through and deteriorating gasket rapidly.
–
Check the intervention of all safety and adjustment accessories described in the relevant chapter.