Burner Closing - Riello RS 68/EV O2 BLU Installation, Use And Maintenance Instructions

External air R1 adjustment
 Rotate the screw 4)(Fig. 19) until the notch you have found
corresponds with the front surface 5) of the flange.
To facilitate adjustment, loosen the screw 6),
adjust and then lock.
WARNING
Central gas/air R2 adjustment
 Loosen the 3 screws 1)(Fig. 19) and rotate the ring nut 2)
until the notch you have found corresponds with the
index 3).
 Block the 3 screws 1).
Example:
RS 120/EV O BLU, burner output = 750 kW.
2
The diagram of (Fig. 18) shows that the adjustments for this po-
tential are:
– air R1 = notch 6
– central gas/air R2 = notch 2
NOTE:
the diagram (Fig. 18) indicates the optimum adjustment for a
type of boiler according to Fig. 4 at page 13.
The adjustments indicated can be modified during
the initial start-up.
WARNING
5.10

Burner closing

Once the combustion head adjustment is completed:
 reassemble the burner on the guides 3) at about 100 mm
from the pipe coupling 4) - burner in the position shown in
Fig. 16;
 insert the probe and electrode cables, then slide the burner
as far as the pipe coupling - burner in the position shown in
Fig. 20;
20155480
Installation
2
(R 2)
3
1
 connect the socket of the maximum gas pressure switch;
 refit the screws 2) on the guides 3);
 fix the burner to the pipe coupling with the screws 1).
WARNING
2 3 4
20113906
26 GB
5
4
(R 1)
6
D7675
When fitting the burner on the two guides, it is
advisable to gently draw out the high voltage
cable and flame detection probe cable until they
are slightly taut.
2 (R 3)
3
1
Fig. 19
5
1
Fig. 20