Combustion Head Adjustment - Riello 20034365 Installation, Use And Maintenance Instructions

Installation
4
4.6

Combustion head adjustment

At this point of the installation, the combustion head is fixed
to the boiler as shown in Fig. 13.
Its adjustment is therefore particularly easy, which depends
solely on the maximum burner output.
Two adjustments of the head are foreseen:
 the air adjustment;
 the gas adjustment.
In the diagram of Fig. 16, find the notch at which to adjust
both air and central gas/air.
Air adjustment
Rotate the screw 2) until the notch you have found corre-
sponds with the front surface 1) of the flange.
Important
To facilitate adjustment, loosen the screw 3)
(Fig. 14), adjust and then lock.
CAUTION
Gas adjustment
Loosen the 4 screws) and rotate the ring nut 5) until the notch
you have found corresponds with the index 3) (Fig. 14).
Block the 3 screws 4).
Example
RS 100/M, burner output = 900 kW.
According to diagram Fig. 16 the gas and air adjustments for this output are carried out on notch 5.
NOTE
The diagram indicates the optimum adjustment for a type of boiler according to Fig. 4.
The adjustments indicated can be modified during the initial start-up.
20035512
Maximum burner output
Fig. 14
3
5
4
D9756
13
GB
1
2
D8690 Fig. 15
Fig. 16