Combustion Check; Ionization Current - Riello FS15D Instrucciones De Instalación, Uso Y Mantenimiento

4.3 SETTING OF THE AIR DAMPER ACTUATOR
ATTENTION
Check that cams I and V are respectively set at
20° and 90°.
PAUSE - FIRST STAGE
The I cam controls the air for the 1
The cam must be adjusted on decrease (damper closing)
by adjusting the micrometer screw.
The definitive position is obtained after 2
ment.
SECOND STAGE
The II cam controls the air for the 2
(Reference value 60°, not to exceed 70°).
Do not modify this setting for any reason.
The regulation of airflow at 2
ating the air damper (1, fig. 2).
The III cam controls the opening of the gas valve at 2
stage and must precede the II cam by at least 15°.
Warning:
For power adjustment at 1
lowing indications:
– the power ratio between 1
at a maximum, if the above ratio is exceeded, valve seal
control must be used;
– in any case, the minimum burner power at 1
must not be less than the firing rate range.

4.4 COMBUSTION CHECK

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

IONIZATION CURRENT

The minimum current necessary for the control
box operation is 3 µA.
The burner normally supplies a higher current
value, so that no check is needed. However, if
you want to measure the ionization current, you
must open the connector fitted to the red wire
and insert a microammeter.
2748
I CAM
st
stage flame (2, fig. 2).
nd
stage adjust-
II CAM
nd
stage flame.
nd
stage is carried out by oper-
st nd
and 2 stage, apply the fol-
st nd
and 2 stage must be 1 : 2
Setting CO
2
λ = 1.2
2
9.7
9.5
11.6
11.4
D1777
nd
st
stage
AIR EXCESS:
max. output λ ≤ 1.2 – min. output λ ≤ 1.3
%
2
λ = 1.3
9.0
8.8
10.7
10.5
Terminal board
of control-box
10
7 GB
Micrometric screws
Fig. 2
E9085
CO
mg/kWh
≤ 100
≤ 100
≤ 100
≤ 100
Connector
D5006
2
1
NO
x
mg/kWh
≤ 170
≤ 170
≤ 230
≤ 230
Probe