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6.7
Parameter modification procedure
After accessing the level and group of parameters, the display
visualises the number of the parameter (flashing) on the left, and
the corresponding value on the right.
P
If the value is not visualised, press the key "i/reset" for 1 - 3
seconds.
An example of how to modify the parameter relating to pre-
purging time (no.225) is given below.
Press the key "i/reset" : the value 20 (seconds) will appear.
NOTE:
The unit of measurement of the time is not visualised but is un-
derstood in seconds.
P
/reset
Press the key "+" and increase the value to 25 seconds (flash-
ing). Press the key "i/reset" to confirm and store.
P
h mi
V
To return to the list of parameters, press the keys "+" and "-"
( ESC ) simultaneously.
P
h min
s
6.7.1
Procedure for inserting and adjusting points
on the modulation curve
Nine adjustment/calibration points (P1 ÷ P9) can be inserted in
the control box for each servomotor, varying their position by de-
grees and, consequently, the quantity of air and fuel introduced.
The ignition point P0 is independent of the minimum modulation
value. This means that, in the event of difficulty, it is possible to
switch on the burner at a value other than the modulation mini-
mum ( P1 ).
To access the Parameter mode (group 400) referring to the "Ac-
cess procedure with password" on page 39.
20068463
Start-up, calibration and operation of the burner
h
min
s
%
V
h min s
%
/reset
s
%
ESC
%
To insert or adjust a point, proceed as follows.
Using the keys "+" and "-" insert/select the curve point you want
and wait for it to flash: this means that the servomotors are now
positioned on the values shown on the display and which corre-
spond to the point previously set.
It is now possible to insert/modify the position by degrees.
Il valore impostato non necessita di conferma.
WARNING
For the fuel servomotor, keep the key "F" pressed (the position
in degrees flashes) and press the keys "+" or "-" to increase or
decrease the value.
F
For the air servomotor, keep the key "A" pressed (the position in
degrees flashes) and press the keys "+" or "-" to increase or de-
crease the value.
A
To adjust the speed of the inverter (expressed in % and that is 50
Hz = 100 % ), keep the buttons "F" and "A" simultaneously
pressed, the percentage position blinks and press buttons "+" or
"-" to increase or decrease the value.
VSD
F
A
Select another point, or exit this area by pressing the keys "+"
and "-" ( ESC ) simultaneously.
40
GB
P
V
h
min
s
P
s
P
V
h
min
P
V
h min
%
ESC
%
%
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