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Start-up, calibration and operation of the burner
7.1 Notes on safety for the first start-up
7.2 Adjustments prior to ignition
The following adjustments must be carried out:
open the manual valves upline of the gas train;
bleed the air from the gas pipes using the screw on the
socket (Fig. 19 on page 21).
Adjust the minimum gas pressure switch to the start of the
scale.
Make sure that the cover has been correctly installed on the
burner (the presence or otherwise of the cover considerably
affects the depression values measured at the pressure test
point downstream of the valve). See Fig. 19 on page 21.
7.3 Fan adjustment
Modulation is based on variable-speed technology.
The combustion air flow rate can be regulated by varying the mo-
tor speed (rpm).
The proportioning gas train delivers the right amount of fuel, de-
pending on the pressure detected in the purging circuit.
So the flow rate supplied is regulated by changing the rotation
speed of the motor.
The motor speed can be regulated through an adjustment of the
control box.
The adjustments take place on the AZL display on the burner and
are carried out using the following parameters:
START ignition point (P0) Parameter P 403.00
MIN minimum point (P1) Parameter P 403.01
MAX maximum point (P2) Parameter P 403.02
The adjustment of the fan (to establish the maximum, mini-
mum and ignition outputs) can occur independently both of
the AZL display and the keys and display on board the ma-
chine.
Below is a description of the procedure to carry out using
the AZL display since it allows you to work with the cover in-
stalled (final configuration).
Points P0, P1 and P2 can be modified within the range de-
fined by the limits set in the parameters 516, 517 and 518 re-
spectively.
7.4 Pre-setting of the points P0 (ignition), P1 (minimum) and P2 (maximum)
The burner leaves the factory with a pre-setting of points P0, P1
and P2.
Before starting the burner we recommend modifying these point
based on the maximum output of the boiler, the minimum output
desired and that of the ignition.
To set the points based on the desired outputs, see the charts
(page 11).
To modify the points P0, P1 and P2 with the burner off, proceed
as follows:
– Electric voltage is available (indicator light “POWER ON”
must be on).
– Turn the “ON/OFF” selector to “OFF”, standby (OFF).
Start the programming mode for the technician.
Keep the buttons “A” and “F” pressed simultaneously for
< 5 seconds. “Code” is displayed.
Entering the password of the technician (SO) using the but-
tons “+”, “-” and “i/reset”. See also chapter “Entering the
password” on page 37.
The displays shows PArA and then 400:Set. Confirm by
pressing “i/reset”;
The display shows run;
Press simultaneously the keys “+” and “-” (ESC);
The display shows “P0: 1200” (for example 1200 rpm);
Change the value by pressing simultaneously the keys “A”
and “+” to increase the value or keys “A” and “-” to lower the
value;
Confirm by pressing “i/reset”;
The display shows “P1: 1200” (for example 1200 rpm);
Change the value by pressing simultaneously the keys “A”
and “+” to increase the value or keys “A” and “-” to lower the
value;
Confirm by pressing “i/reset”;
The display shows “P2: 5700” (for example 5700 rpm);
Change the value by pressing simultaneously the keys “A”
and “+” to increase the value or keys “A” and “-” to lower the
value;
Confirm by pressing “i/reset”.
Press contemporaneously the keys “+” and “-” (ESC) several
times until the display shows “OPErAtE” and then “OFF”;
At this point it is possible to start the burner.
7 Start-up, calibration and operation of the burner
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.
Check the correct working of the adjustment, com-
mand and safety devices.
Refer to paragraph “Safety test - with gas ball
valve closed” on page 52 before the first start-
up.
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