Start-Up, Calibration And Operation Of The Burner; Notes On Safety For The First Start-Up; Burner Adjustment - Riello G490 MXK 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

Burner adjustment

The optimum adjustment of the burner requires an analysis of
flue gases at the generator outlet. In conformity with Boiler Effi-
ciency Directive 92/42/EEC, the burner application at the gener-
ator, the adjustment and the testing must be carried out in
compliance with the instruction manual of the generator itself, in-
cluding the control of the CO and CO
gases and of their temperature.
Check in sequence:
 MAX output
 MIN output
 ignition output
Maximum output should match the value required by the boiler
that is used. To increase or decrease its value, adjust the trimmer
MAX located on the control box Fig. 15 on page 14. Measure the
gas delivery on the counter to precisely establish the burnt out-
put.
Using a smoke analyser, measure the value of the CO
in order to optimise the burner calibration.
The correct values are: CO
2
To correct these values act on the gas valve in the following way:
– to increase the gas delivery and the CO
anticlockwise (unscrew);
– to reduce the gas delivery and the CO
clockwise (tighten).
Minimum output should match the value required by the boiler
that is used. To increase or decrease its value, adjust the trimmer
MIN located on the control box Fig. 15 on page 14.
Measure the gas delivery on the counter to precisely establish the
burnt output.
Using a smoke analyser, measure the value of the CO
in order to optimise the burner calibration.
The correct values are: CO
2
To correct these values act on the gas valve in the following way:
– to increase the gas delivery and the CO
clockwise (tighten);
– To reduce the gas delivery and the CO
anticlockwise (unscrew).
5.2.1 Optimum calibration values
MIN output
CO (%)
2
Methane 8
LPG 9.5
G25 7,8
20113083
Start-up, calibration and operation of the burner
concentration in the flue
2
or the O
2
8.2 ÷ 9%.
: turn the screw V1
2
: turn the screw V1
2
or the O
2
7.8 ÷ 8.5%.
: turn the screw V2
2
: turn the screw V2
2
MAX output
O (%) CO (%) O
2 2
6.6 8.5
6.4 10
6,8 8,3
Check the correct working of the adjustment, com-
mand and safety devices.
WARNING
2
D9769
2
(%)
2
5.7
5.6
5,8
Tab. I
18 GB
D9714
a
a
a
a
i
i
Fig. 18
Fig. 19