68
INS
TALL
AT
O
RE
U
TENTE
MANU
TENT
O
RE
+
+
3
12
2
1
P1
P3
52
3.10 INDOOR UNIT CO
2
ADJUSTMENT.
ATTENTION:
the verification operations of the CO2
must be carried out with the casing
mounted, while the gas valve calibration ope-
rations must be carried out with the casing
open and removing the voltage from the Vic-
trix Hybrid.
Calibration of the CO
2
at minimum output
Enter the chimney sweep mode without withdrawing DHW and
set the output to minimum (0%). To have an exact value of CO
2
the technician must insert the sampling probe to the bottom of the
sample point, then check that the CO
2
value is that specified in the
table (Ref. Parag. 4.2), otherwise adjust the screw (Part. 3 Fig. 52)
(Off-Set adjuster). To increase the CO
2
value, turn the adjustment
screw (3) in a clockwise direction and vice versa to decrease it.
Calibration of the CO
2
at maximum output
When you finish the minimum CO
2
adjustment, while maintaining
the chimney sweep function active, set the output to maximum
(99%). To have an exact value of CO
2
the technician must insert
the sampling probe to the bottom of the sample point, then check
that the CO
2
value is that specified in the table (Ref. Parag. 4.2),
otherwise adjust the screw (Part. 12 Fig. 52) (gas flow rate regulator).
To increase the CO
2
value, turn the adjustment screw (12) in a
clockwise direction and vice versa to decrease it.
At every adjustment variation on the screw 12 it is necessary to
wait for the boiler to stabilise itself at the value set (about 30 sec.).
Gas Valve 42
3.11 CHECKS FOLLOWING CONVERSION TO
ANOTHER TYPE OF GAS.
After making sure that conversion was carried out with a nozzle
of suitable diameter for the type of gas used and the settings are
made at the correct pressure, check that the burner flame is not
too high or low and is stable (does not detach from burner);
Maintenance interventions must be carried out by
an authorised company (e.g. Authorised After-Sales
Centre).
Key:
1 - Gas valve inlet pressure point
2 - Gas valve outlet pressure point
3 - Off/Set adjustment screw
12 - Outlet gas flow rate adjuster
