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7.3
Start-up procedure
Check that the operator panel display shows the heat request
and "OFF Upr": this means it is necessary to set the modulation
curve of the burner.
P
Access the Parameters Level referring to "Access procedure
with
password"
The display screen displays the parameters group 400.
P
Confirm with the key "i/reset"
The display shows "run"
Confirm with the key "i/reset". The burner starts up.
The display shows all the phases and relative times in sequence.
The phases are listed in the section "List of phases" on
page 17.
Phase 22:
Start of the fan motor.
Phase 24:
The burner goes to the pre-purging position, the air servomotor
opens the damper at 90°.
Phases 80, 81, 82, 83:
These phases relate to the valve seal test.
Phase 30:
The count of the pre-purging time pre-set in the factory begins.
Phase 36:
The burner goes to its switch-on position, point "P0", defined in
Tab. L on page 36: the display shows a flashing "P0" indication.
If the value proposed is adequate, confirm using the "+" but-
ton.
Otherwise, modify the ignition point (see the section"Procedure
for inserting and adjusting points on the modulation curve"
on page 42.
20205886
Control and display
h min s
V
%
on
V
h
min
s
%
/reset
P
The values shown in the figure are purely for indi-
cation purposes.
WARNING
page 40.
Phase 38:
The ignition phase begins and the spark goes off.
Phase 40:
The gas valves open (the count of the safety time begins). Using
the appropriate visor check there is a flame and that the combus-
tion parameters are correct. if necessary, vary the degrees of
opening/closing of the air and fuel servomotors.
If the flame control goes into lockout, press the keys "+" and "-"
(ESC) simultaneously: the display visualises alternately the lock-
out code for flame absence c: 4) and the relative diagnostic ( d:
3).
Solve the problem, referring to the paragraph "Ignition failure"
on page 52.
To unlock, see "Reset procedure" on page 39. The display vis-
ualises "OFF Upr".
Repeat the "Start-up procedure" on page 44.
The values previously inserted remain stored.
WARNING
Once the ignition has occurred (point "P0"), proceed with the
calibration of the modulation curve.
Press the button "+": the display visualises the indicator "P1"
flashing and proposes the same settings as point "P0".
44
GB
V
h
min
s
%
P
V h
min
P
h
min s
V
s
%
%
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