Start-Up, Calibration And Operation Of The Burner; Notes On Safety For The First Start-Up; Combustion Adjustment - Riello BG7.1D Installation, Use And Maintenance Instructions

6

Start-up, calibration and operation of the burner

6.1

Notes on safety for the first start-up

The first start-up of the burner must be carried out
by qualified personnel, as indicated in this manual
and in compliance with the standards and regula-
tions of the laws in force.
WARNING
6.2

Combustion adjustment

In conformity with EN 267, 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 CO2 concentration in the flue gases, their temperatures and
the average temperature of the water in the boiler.
The combustion air is sucked from outside, there-
fore, there can be sensitive temperature varia-
tions that can influence the percentage value of
the CO . It is advisable to adjust the CO
WARNING
2
ing to the diagram.
For example: with an combustion air temperature
of 20°C, adjust the CO
The values in Fig. 22 are refer to 12.5% CO
with ambient temperature and light oil at 20 ° C.
Recommended nozzles: Delavan
Nozzle
Delavan
GHP Angle Type
1.25 60° A
1.35 60° A
1.50 60° A
1.65 60° A
1.75 60° A
2.00 60° A
1.75 80° B
2.00 80° B
2.25 80° B
2.50 60° W
2.75 60° W
On inversion boilers, it is necessary to open the
choke more compared with the calibrations shown
in Tab. H.
WARNING
20137240
Start-up, calibration and operation of the burner
to 12.5% (± 0.2%).
2
, at sea level and
2
Pressure Output
pump burner
bar kg/h ± 4%
1st 2nd 1st
stage stage stage
9 14.5 4.5
9 14.5 4.7
9 14.5 5.3
9 14.5 5.7
9 14.5 6.1
9 13.5 7
10 14.5 6.5
9 15 7
9.5 15 7.8
9 14 8.9
9 15 9.8
WARNING
14.0
13.5
13.0
12.5
12.0
11.5
accord-
11.0
2
10.5
10.0
-10 -5
Adj.
head air damper
Set-point
Set-
2nd 1st
point
stage stage
5.5 1 0.4
5.9 1.5 0.4
6.7 2.5 0.5
7.5 3 0.6
8 3.5 0.75
8.7 4.5 1
7.7 1 0.25
9 1.5 0.25
9.8 2 0.35
11 3 0.45
12.5 4 0.55
22 GB
Check the correct working of the adjustment, com-
mand and safety devices.
0 5 10 15 20
Combustion air temperature (°C)
Adj. Air pressure
comb. head
mbar
2nd 1st 2nd
stage stage stage
2.2 4.4
2.5 4.4
3 4.3 7.3
3.5 4.3 7.5
4 4.5
4.5 5
0.6 7.1 9.3
1.1 6.4
1.5 6.4
1.5 6.4 9.5
2.5 6.5 10.1
20159270
25 30 35 40 45
Fig. 22
Opening
choke
mm
7 10
7 10
10
10
8 10
8 10
10
10 30
10 30
30
10
Tab. H