Combustion Head Adjustment - Riello RS 160/EV O2 BLU Installation, Use And Maintenance Instructions

5.8

Combustion head adjustment

At this point of the installation, the combustion head is fixed to the
boiler as shown in Fig. 14.
It is therefore especially easy to adjust, and this adjustment de-
pends only on the maximum output of the burner.
Two adjustments of the head are foreseen:
– external air R1
– central air R3
In the diagram (Fig. 18) find the notch at which to adjust both air
and central air.
External air R1 adjustment
 Rotate the screw 4)(Fig. 17) until the notch you have found
corresponds with the front surface 5) of the fitting.
To facilitate adjustment, loosen the screw 6),
adjust and then lock.
WARNING
Central air R3 adjustment
 Loosen the 2 screws 1) and rotate the ring nut 2) until the
notch you have found corresponds with the screw 1).
 Block the 2 screws 1).
The burner leaves the factory with the ring nut 3)
set to notch 0.
Do not change this value.
WARNING
Example:
burner output = 2000 kW.
According to diagram Fig. 18 the external air and central air
adjustments for this output are carried out on notch 6.
NOTE:
the diagram (Fig. 18) indicates the optimum adjustment for a
type of boiler according to Fig. 3 at page 10.
The adjustments indicated can be modified during
the initial start-up.
WARNING
Installation
Max burner output
23 GB
4 5
6
(R1)
0
1
2
3
20127192
1
3
2
(R3)
Fig. 17
20162099
Fig. 18
20156417