Working; Combustion Adjustment - Baxi CRONO 10-L2 Installation, Assembly, And Operating Instructions For The Installer

4.

WORKING

4.1 COMBUSTION ADJUSTMENT

In conformity with Efficiency Directive 92/42/EEC the application of the burner on the boiler, adjustment and
testing must be carried out observing the instruction manual of the boiler, including verification of the CO and
CO concentration in the flue gases, their temperatures and the average temperature of the water in the boiler.
2
To suit the required appliance output, choose the proper nozzle and adjust the pump pressure, the setting of
the combustion head, and the air damper opening in accordance with the following schedule.
They refer to 12.5% CO
CRONO 10-L2
Pump pressure
Nozzle
1 st stage
GPH Angle
1.00 60°
1.10 60°
1.25 60°
1.50 60°
1.75 60°
2.00 60°
2.25 60°
CRONO 15-L2
Pump pressure
Nozzle
1 st stage
GPH Angle
1.50 60°
1.75 60°
2.00 60°
2.25 60°
2.50 60°
3.00 60°
3.50 60°
CRONO 20-L2
Pump pressure
Nozzle
1 st stage
GPH Angle
2.50 60°
3.00 60°
3.50 60°
4.00 60°
4.50 60°
CRONO 25-L2
Nozzle
GPH
1 st stage 2 nd stage
2.00 1.00
2.00 2.00
2.50 2.50
3.00 3.00
2701
at sea level and with light oil and room temperature of 20 °C.
2
Burner output
bar
2 nd stage 1 st stage
9 14 3.5
9 14 3.8
9 14 4.3
9 14 5.2
9 14 6.1
9 14 7.0
9 14 7.8
Burner output
bar
2 nd stage 1 st stage
9 14 5.2
9 14 6.1
9 14 7.0
9 14 7.8
9 14 8.7
9 14 10.4
9 14 12.2
Burner output
bar
2 nd stage 1 st stage
9 14 8.7
9 14 10.4
9 14 12.2
9 14 13.9
9 14 15.6
Pump
pressure
Angle
1 st stage 2 nd stage
bar
60° 12
60° 12
60° 12
60° 12.5
Comb. head
adjustment
kg/h ± 4%
2 nd stage
Set-point
4.3
4.8
5.4
6.5
7.6
8.7
9.8
Comb. head
adjustment
kg/h ± 4%
2 nd stage
Set-point
6.5
7.6
8.7
9.8
10.8
13.0
15.2
Comb. head
adjustment
kg/h ± 4%
2 nd stage
Set-point
10.8
13.0
15.2
17.3
19.5
Burner output Comb. head
adjustment
kg/h ± 4%
8.0 12.4
8.0 16.4
10.3 20.5
12.6 25.0
8
GB
Air damper
adjustment
Set-point
1 st stage
0 0.2
1 0.4
2 0.6
3 0.8
4 1.2
5 1.4
6 1.6
Air damper
adjustment
Set-point
1 st stage
0 0.2
0.5 0.25
1.5 0.4
2.5 0.5
3.5 0.6
5.0 0.8
6.0 1.0
Air damper
adjustment
Set-point
1 st stage
0 0.2
1 0.5
2.5 0.8
4 1.0
6 1.3
Air damper
adjustment
Set-point
1 st stage 2 nd stage
Set-point
0 0.25
3 0.15
6 0.3
8 0.6
2 nd stage
1.5
2.1
2.6
3.4
4.8
5.4
6.0
2 nd stage
0.5
1.0
1.1
1.5
2.0
3.0
3.9
2 nd stage
1.8
2.7
3.7
4.5
6.0
2.1
3.0
4.4
6.0