Combustion Adjustment - Riello GS5 Installation, Use And Maintenance Instructions

COMBUSTION ADJUSTMENT

In conformity with Efficiency Directive 92/42/EEC, the application of the burner on the boiler, adjust-
ment and testing must be carried out by observing the instruction manual of the boiler, including
verification of the CO and CO
temperature of the water in the boiler. It is advisable to set the burner according to the type of gas
used and following the indications of the table:
EN 676
Theoretical max. CO
GAS
0 % O
G 20 11.7
G 25 11.5
G 30 14.0
G 31 13.7
PROBE - ELECTRODE POSITIONING
IMPORTANT
Do not turn the starting electrode but leave it as shown in the drawing; if the starting electrode is put
near the ionization probe, the amplifier of the control box might be damaged.
Put the ceramic
near the diffuser disc
Probe
D5033
IONISATION CURRENT
The minimum current necessary for the con-
trol box operation is 5 μA.
The burner normally supplies a higher cur-
rent value, so that no check is needed.
Should you want to measure the ionisation
current anyway, you must open the connec-
tor (CN1) (see wiring diagram page 5)
inserted in the red wire and insert a microammeter.
concentration in the flue gases, their temperatures and the average
2
AIR EXCESS: max. output λ ≤ 1.2 – min. output λ ≤ 1.3
Setting CO
2
λ = 1.2
2
9.7
9.5
11.6
11.4
Diffuser
Probe
%
2
λ = 1.3
9.0
8.8
10.7
10.5
Ignition electrode
2
WARNING 2.5
D4625
Socket
of control-box
7 GB
NO
CO
mg/kWh
mg/kWh
≤ 100 ≤ 170
≤ 100 ≤ 170
≤ 100 ≤ 230
≤ 100 ≤ 230
Electrode
3.5 mm
–
Connector
_
+
x
Probe
20013751