23
STV2I ed 11/09
VICTRIX 2 I Export
Technical Documentation
Technical Documentation
Air-gas adjustments.
The calibration of the total premix combustion system, when
necessary envisions the adjustment of the nominal heat output
and the air-gas ratio (off-set).
The two operations are only normally requested after a gas
transformation, after extraordinary maintenance (
replacement
of a component of the air-gas circuit, replacement of the integrated
P.C.B. etc.
) or when the appliance is not calibrated.
N.B.: The nominal output must also be adjusted during
the initial check.
Adjustment of nominal and minimum heat
output.
The availability of maximum output is linked to the length of
the intake and exhaust pipes which, increasing, slightly reduces
the amount (
flow rate
) of inlet air and consequently also la
pressure of the burnt gas.
The boiler is calibrated as per standard for functioning with
a Ø60/100 horizontal concentric kit with length of 1m and
therefore the use of the flue kit with greater head losses requi-
res a check and possible adjustment of the nominal output
according to the table give below.
The operation must be performed as follows and with respect
to the values stated in the heat output adjustment table:
- connect a differential manometer to the pressure points
P1
(positive point) and
P2
(negative point) found in the upper
part of the sealed chamber (
in this way the pressure difference
at the ends of the Venturi pipes (P1-P2) is detected and a pressure
signal is measured that corresponds to the real flow rate of the
air-gas mixture at the burner).
- enter calibration function by positioning the domestic hot
water adjustment selector switch on notch N° 6 and the
central heating adjustment selector switch on notch N° 9.
- turn the main switch to Reset for 15 seconds and release it
when "Id" (
identification
) appears on the boiler display.
- once the calibration menu has been entered, the display will
show the domestic hot water symbol and the flame signal
with power scale at the flashing maximum value.
N.B.:
If identification does not take place within 15 seconds,
the boiler will go into Stand-by and the error code E08 will
be shown that is equivalent to "Reset selector switch fault".
To restore appliance functioning, turn the main switch to the
(Stand-by) position.
- at this point
it will be possible to vary the maximum ou-
tput in DHW mode
by operating on the DHW adjustment
selector, adjusting the fan revs. from 4500 to 6000 revs. in
order to obtain the pressure value (P1-P2) corresponding
to the nominal heat output (
notch N° 9 corresponds to the
maximum speed = 6000 revs, notch N° 0 corresponds to the
minimum speed = 4500 revs
). During adjustment, the display
shows the fan speed in hundreds of revs. per minute.
- to confirm the parameter set, position the main switch on
Reset for 2 seconds.
P1
P2
N.B.:
During the adjustment of the maximum output in
DHW mode, the CH selector switch must be positioned on
notch N° 9.
- After having set the maximum heat output
it is necessary
to adjust the minimum output (CH and DHW
) by ope-
rating on the DHW adjustment selector, adjusting the fan
revs. from 960 to 1200 revs. in order to obtain the pressure
value (P1-P2) corresponding to the minimum output (
notch
N° 9 corresponds to the maximum speed = 1200 revs, notch
Domestic hot water
Central heating
Domestic hot water
maximum nominal speed
adjustment
Central heating
position on
notch 9
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