2902
8
GB
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
2
in the flue gases, the flue gas temperature and the average water and
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 in accordance with the following schedule.
The values given in the table refer to a CEN boiler (in accordance with EN 267). They refer to 12.5% of
CO
2
, at sea level, room temperature and light oil temperature at 20°C, 50 Hz power frequency and com-
bustion chamber counterpressure at 0.
The values given in the table are just an indication; to get the best performance from the burner, the
regulations should be made on the basis of the effective requirements of the generator.
With 60Hz power frequency, the burner must be re-set, closing the air damper, so that the amount of
intake air is reduced.
4.2
RECOMMENDED NOZZLES
Delavan type W - B;
Steinen type Q;
Danfoss type S.
NOTE
If necessary, the 1st stage nozzle can have a capacity 50% above the total capacity.
The 1
st
stage nozzle should not have a capacity 50% less than the total capacity, as the flame could be unstable.
REPLACE THE NOZZLES
,
(fig. 12 and 13)
To replace the nozzles proceed as fol-
lows:
➤
Disconnect the rubber coated leads
(4) from the control box and slide out
the photocell (5).
➤
Loosen the screws (2) and unscrew
the nuts (3).
➤
Slide out the rubber coated leads (4)
from the electrodes, unscrew and re-
move the screws (9, fig. 13, page 9)
in the diffuser disc unit (8, fig. 13,
page 9).
➤
Pull out the nozzle holder assembly
(1) turning it slightly in a clockwise
direction.
Nozzles
Pump
pressure
Burner
output
Combustion
head
adjustment
Air damper
adjustment
GPH
Angle
kg/h ± 4%
1
st
stage
2
nd
stage
1
st
stage 2
nd
stage
bar
1
st
stage 2
nd
stage
Set-point
Set-point
Set-point
2.00
1.00
60°
12
8.0
12.4
0
0.25
2.1
2.00
2.00
60°
12
8.0
16.4
3
0.15
3.0
2.50
2.50
60°
12
10.3
20.5
6
0.3
4.4
3.00
3.00
60°
12.5
12.6
25.0
8
0.6
6.0
ATTENTION
3
4
2
6
0 2 4 6 8
S7763
1
5
7
Fig. 12
Содержание Gulliver RG5DF
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