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4.
WORKING
4.1 COMBUSTION ADJUSTMENT
In conformity with Efficiency Directive EEC/92/42, the installation of the burner to the heat generator, setting
and testing must all be performed in respect of the instruction manual for the heater, including the controls
on the concentration of CO and CO
air temperatures in the generator.
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.
The values given in the table refer to a CEN boiler (in accordance with EN 267). They refer to 12.5% of
CO
, at sea level, room temperature and light oil temperature at 20°C, 50 Hz power frequency and com-
2
bustion chamber counterpressure at 0.
The burner leaves the factory set according to the following settings:
Code
GPH
20058587
2,00
20058588
2,50
20058589
3,00
20097905
2,00
20097908
2,50
20097909
3,00
ATTENTION
With 60Hz power frequency, the burner must
be re-set, closing the air damper, so that the
amount of intake air is reduced.
REPLACING NOZZLE, (see fig. 11):
To replace nozzle, proceed as follows:
Disconnect cables (4) from control box and pull
➤
out the photoresistance (6).
Unscrew nut (3), loosen screws (2) and remove
➤
nozzle-holder assembly (1) by rotating slightly to
the right.
Disconnect cables (4) from electrodes, unscrew
➤
screws (3, fig. 12, page 9) and remove the diffus-
er disc support assembly (10) from nozzle-holder
assembly (1).
20058598
in the flue gases, the flue gas temperature and the average water and
2
Nozzle
Angle
Type
60° B
DELAVAN
60° B
DELAVAN
60° S
DANFOSS
60° B
DELAVAN
60° B
DELAVAN
60° S
DANFOSS
Pump
Burner
pressure
output
bar
kg/h ± 4%
11,5
8,16
11,5
6,1
12
12,5
12
8,52
12
10,65
12
16,69
Fig. 11
8
GB
Combustion
Air damper
head
adjustment
adjustment
Set-point
Set-point
6
4
6
2,3
6
3
0
1,5
3
2
6
2,2
S7180
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