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4.
BURNER OPERATION
WARNING
!
QUALIFIED PERSONNEL WITH THE RIGHT INSTRUMENTS MUST HANDLE THE BURNER'S FIRST
START-UP
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.
The values shown in the table are measured on a CEN boiler (as per EN 267).
They refer to 12.5% CO 2 at sea level and with light oil and room temperature of 20 °C.
Nozzle
GPH
Angle
1.75
60°
2.00
60°
2.25
60°
2.50
60°
3.00
60°
3.50
60°
3.50
60°
4.2 RECOMMENDED NOZZLES:
Delavan type W - B ; Danfoss type S - B;
Monarch type R
; Steinen type S - Q.
For 3.00 - 3.50 GPH nozzles it is advisable to use full cones.
4.3 PUMP PRESSURE
The pump leaves the factory set at 12 bar.
To change it act on pump pressure adjust screw (4, fig. 5, page 5).
4.4 ELECTRODES ADJUSTMENT
WARNING
MEASURES MUST BE
RESPECTED
Lean the diffuser disc-holder assem-
bly (1) on the nozzle-holder (2) and
lock it by screw (3).
For prospective adjustments loosen
screw (4) and move the electrodes
assembly (5).
To have access to the electrodes car-
ry out operation as described in chap-
ter "4.5 MAINTENANCE POSITION"
(page 8).
3281
Pump
Burner
pressure
output
bar
kg/h ± 4%
12
7.0
12
8.0
12
9.0
12
10.0
12
12.0
12
14.0
14
15.2
(see fig. 10)
Fig. 10
Combustion head
adjustment
Set-point
0
1
3
3.5
5
6
6
0
4.5
– 0.5 mm
4
5
3
7
GB
Air damper
adjustment
Set-point
1.3
2.3
2.6
3.0
3.5
4.4
5.6
÷
6
7
mm
2
1
2
D5085
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