Start-Up, Calibration And Operation Of The Burner; Notes On Safety For The First Start-Up; Combustion Head Adjustment - Riello DB 4 SE FGR Installation, Use And Maintenance Instructions

5

Start-up, calibration and operation of the burner

5.1

Notes on safety for the first start-up

The first start-up of the burner must be carried out
by qualified personnel, as indicated in this manual
and in compliance with the standards and regula-
tions of the laws in force.
WARNING
5.2

Combustion head adjustment

Rotate the screw 1) until the notch you have found corresponds
with the front surface of the screw itself.
The combustion head is opened by turning the screw 1) anti-
clockwise.
The combustion head is closed by turning the screw 1) clockwise
(Fig. 20)
The burner leaves the factory with the combustion
head set at notch 0 (Fig. 20).
This setting allows to secure the movable compo-
WARNING
nents during the transport of the burner.
Before starting up the burner, carry out the settings according to
the required output and indicated in the diagram (Fig. 21).
NOTE:
Depending on the specific application, the adjustment can
be modified.
Only for the DB3 SE FGR model:
The DB 3 SE FGR burner is equipped with central air/gas adjust-
ment. The factory setting is the following:
AIR = notch 9
GAS = notch 0.
Do not change these settings!
WARNING
Only for specific cases, to change the central gas setting, do as
follows:
 loosen the screws 1) and rotate the ring nut 3) until the notch
you have found corresponds with the indicator 4)(Fig. 22).
To change the central air setting, do as follows:
 loosen the screws 1) and rotate the ring nut 2) until the notch
you have found corresponds with the screw 1);
 block the 2 screws 1)(Fig. 22).
No. Notches (air = gas)
16
14
12
10
8
DB3
6
4
2
0
600
1400 2200 3000 3800
Max burner output (kW)
20169009
Start-up, calibration and operation of the burner
20171669
DB6
DB4
4600 5400 6800
6000 7600
Fig. 20
Check the correct working of the adjustment, com-
mand and safety devices.
WARNING
Refer to paragraph "Safety test - with gas ball
valve closed" on page 30 before the first start-
up.
WARNING
20084828
8400
24 GB
20073539
Fig. 21
Fig. 22