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External air R1 adjustment
Turn the screw 4)(Fig. 18) until the notch found lines up with
the front surface 5) of the flange.
To facilitate the adjustment, loosen the screw 6),
adjust, then block.
ATTENTION
Central gas/air R2 adjustment
Loosen the 3 screws 1)(Fig. 18) and rotate the ring nut 2)
until the notch you have found corresponds with the
indicator 3).
Block the 3 screws 1).
Example:
RS 200/M BLU, burner output = 2400 kW.
The diagram (Fig. 17) shows that for this output the settings are:
–
air R1 = notch 10
–
central gas/air R2 = notch 10
If gas pressure allows it, NOx reduction can be obtained by
closing ring nut 2)(Fig. 18).
Continuing the example above, you understand that for RS 200/
M BLU burner having a power of 2400 kW, pressure must be 28
at outlet 6)(Fig. 18).
5.10
Closing the burner
Once the combustion head adjustment is completed:
reassemble the burner on the slide bars 3)(Fig. 19) at about
100 mm from the pipe coupling 4);
insert the cables of the probe and electrode, then slide the
burner as far as the pipe coupling, the burner in the position
indicated in Fig. 19;
for burners featuring a long blast tube, remove slide bar
extensions;
refit the screws 2) on the slide bars 3);
fix the burner to the pipe coupling with the screw 1);
reconnect the articulated coupling 7) to the graduated sector
6).
When fitting the burner on the two slide bars, it is
advisable to gently draw out the high voltage
cable and the flame detection probe cable until
they are slightly stretched.
ATTENTION
20152093
4
5
6
( R1)
0
1
2
3
Installation
The burner leaves the factory with the ring nut 2)
set to notch 0.
Do not change this value.
ATTENTION
NOTE:
the diagram (Fig. 17) indicates the optimum adjustment for a
type of boiler according to Fig. 4 on page 12.
The adjustments indicated can be modified during
the initial start-up.
ATTENTION
3
If this pressure is not available, open ring nut 2) to 4 - 5 notches.
Check that combustion is fine and with no pulsations/knocking.
2
22
GB
1
2
( R3)
4
( R2)
D8540
3
5
1
4
7
Fig. 18
20155989
6
Fig. 19
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