Start-Up, Calibration And Operation Of The Burner; Notes On Safety For The First Start-Up; Combustion Head Adjustment - Riello 20122858 Installation, Use And Maintenance Instructions

6

Start-up, calibration and operation of the burner

6.1

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-
WARNING tions of the laws in force.
6.2

Combustion head adjustment

Pay attention to moving parts.
Danger of crushing of limbs!
Installation operations are now at the stage where the blast tube
and sleeve are secured to the boiler as shown in Fig. 19.
It is now a very simple matter to set up the combustion head, as
this depends solely on the output developed by the burner at
maximum power.
It is therefore essential to establish this value before proceeding
to set up the combustion head.
There are two adjustments to make on the head:
• outside air R1;
• central air R2.
In diagram (Fig. 18) find the notch for:
Outside air adjustment R1 (Fig. 19)
Turn screw 4) until the notch identified is aligned with the front
surface 5) of the connector.
In order to facilitate adjustment, loosen screw 6)
Fig. 19, adjust and then tighten.
WARNING
Central air adjustment R2 (Fig. 19)
Loosen the 2 screws 1) and turn ring 4) until the notch identified
is aligned with the screw 1). Tighten the 2 screws 1) fully down.
Central gas ring nut R3 (Fig. 19)
The burner leaves the factory with the ring nut 2) set to notch 0.
Do not change this value.
Example: max. burner output = 2400 kW. If we consult diagram
(Fig. 18) we find that for this output the adjustments are:
• outside air: R1 = notch 10;
• central air: R2 = notch 10.
6
0
1
2
3
20118862
Start-up, calibration and operation of the burner
4 5
( R1)
Check the correct working of the adjustment, com-
mand and safety devices.
WARNING
NOTE:
• R2 adjustment (Fig. 18) is an indication only.
If possible, always keep the ring nut closed (notch 0); if air recov-
ery is required the nut may be opened following the indications in
diagram Fig. 18.
• Diagram Fig. 18 indicates an optimal regulation for a type of
boiler seen in Fig. 4.
Make sure that the combustion characteristics are satisfactory
and free of pulsations.
Once you have finished setting up the head, refit the burner
inserting the flame detection probe cable and the ignition elec-
trode cable.
When fitting the burner, it is advisable to gently
draw out the high tension cable and flame detec-
tion probe cable until they are slightly stretched.
WARNING
12
10
8
6
4
2
0
Mcal/h 1100 1300 1500
1200
kW
3
22 GB
1700 1900
1400 1600 1800 2000 2200
Maximum burner output
D8540
1
2
( R3)
4
( R2)
D8541
2100
2400
Fig. 18
Fig. 19