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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
Pump pressure
1
Angle 1 st stage 2 nd stage 1 st stage 2 nd stage
GPH
2.50
60°
9
3.00
60°
9
3.50
60°
9
4.00
60°
9
4.50
60°
9
1
RECOMMENDED NOZZLES
Monarch type R ; Delavan type W - E
Steinen type Q ; Danfoss type S
Satronic type S
TO FIT NOZZLE CARRY OUT THE FOLLOWING
ACTIONS:
– Remove nozzle-holder assembly (1) after
loosing screws (2) and nut (3), remove the
small cables (4) from the control box and the
photoresistance (5), (see fig. 12).
– Withdraw the small cables (4) from the elec-
trodes, remove the diffuser disc-holder assem-
bly (8) from the nozzle-holder assembly (1) after
loosing screw (3, fig. 13, page 7).
– Screw the nozzle (9) correctly and tighten it
as shown in figure 12.
ATTENTION
During the reassembly of the nozzle-holder assem-
bly screw the nut (3) as shown in the figure below.
D5684
3
TIGHTEN WITHOUT MOVING
BACKWARDS TO THE END
2334
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and to sea level.
2
Burner output
kg/h ± 4%
bar
15
8.7
15
10.5
15
12.5
15
14.0
14
16.4
Comb. head
adjustment
2
Set-point
11.2
0
13.5
1
15.7
2.5
17.7
4
20.0
6
Fig. 12
6
GB
Air damper adjustment
1 st stage
2 nd stage
Set-point
Set-point
0.2
1.8
0.5
2.7
0.8
3.7
1.0
4.5
1.3
6.0
S7239
2
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