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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.
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.
Values in the table refer to 12,5% CO
NOZZLE
1
GPH
st
nd
1
stage 2
stage
2.00
1.00
2.00
2.00
2.50
2.50
3.00
3.00
1
RECOMMENDED NOZZLES
Delavan type W - B
Steinen type Q
Danfoss type S
N.B.: If necessary the 1
have an output exceeding 50 % of the
total output.
TO FIT NOZZLES CARRY OUT THE FOLLOWING
ACTIONS:
(see fig. 12)
– Remove nozzle-holder assembly (1) after
loosing screws (2) and nuts (3), remove the
small cables (4) from the control box and the
photoresistance (5).
– Withdraw the small cables (4) from the elec-
trodes, remove the diffuser disc assembly (8)
from the nozzle-holder assembly (1) after loos-
ing screws (9).
– Screw the nozzles (10) correctly and tighten
it as shown in figure.
ATTENTION
During the reassembly of the nozzle-holder assem-
bly screw the nuts (3) as shown in the figure below.
D5684
3
TIGHTEN WITHOUT MOVING
BACKWARDS TO THE END
2312
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and to sea level.
2
PUMP
PRESSURE
Angle
1
bar
60°
12
60°
12
60°
12
60°
12.5
st
stage nozzle can
COMB. HEAD
BURNER
ADJUSTMENT
OUTPUT
kg/h ± 4%
st
nd
stage 2
stage
8.0
12.4
8.0
16.4
10.3
20.5
12.6
25,0
2
4
3
5
0 2 4 6 8
6
GB
AIR DAMPER
ADJUSTMENT
2
st
1
stage
Set-point
Set-point
0
0.25
3
0.15
6
0.3
8
0,6
6
8
10
7
1
9
2
nd
2
stage
Set-point
2.1
3.0
4.4
6,0
Fig. 12
S7118
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