Riello RS 70 - Combustion Head Adjustment

20144609
18
GB
Installation
5.8 Combustion head adjustment
At this point of the installation, the combustion head is fixed to the
boiler as shown in Fig. 11.
It is therefore especially easy to adjust, and this adjustment de-
pends only on the maximum output of the burner.
The combustion head has 2 adjustments:
–air
–gas
In the diagram (Fig. 15) locate the notch to which both air and
central gas/air should be adjusted.
Air adjustment
 Turn the screw 4)(Fig. 14) until the notch found lines up with
the front surface 5) of the flange.
Gas adjustment
 Loosen the screws 1)(Fig. 14) and rotate the ring nut 2) until
the notch you have found corresponds with the indicator 3).
 Block the 3 screws 4).
Example:
RS 70 burner output = 581 kW (500 Mcal/h).
The diagram (Fig. 15) shows that the gas and air adjustments for
this output should be carried out on notch 3.
NOTE:
The diagram indicates the optimum adjustment for a type of boiler
according to Fig. 3 on page 11.
WARNING
To facilitate the adjustment, loosen the screw 6)
(Fig. 14), adjust, then block.
WARNING
The adjustments indicated can be modified during
the initial start-up.
Fig. 14
D719
Fig. 15
No. notches
Burner output in 2nd stage
D720