50
NOTICE
During initial ignition, burner may not ignite. This
may cause boiler to shut down until any air in gas
pipes is vented. Repeat ignition procedure until
gas reaches the burner. To reset boiler operation,
press
for at least 2 seconds.
9.10 De-Aeration Function
Used to eliminate air inside the heating circuit when
boiler is installed or after maintenance when water is
drained from primary circuit.
1.
Press buttons together and hold for 6
seconds. On appears on display for a few seconds,
followed by program row 312.
2.
for 10 minutes. Function will automatically stop at
end of cycle.
3.
To manually exit this function, press
buttons together and hold for 6 seconds.
9.11 Commission Set Up (Gas) - Changing The Type
Of Gas
During the rst installation boiler carries out an
automatic commissioning function.
The system is able to detect the gas type present in the
network.
Correct gas type setting, is made by pressing two buttons at
the same time, see section 9.6 Commissioning.
Change of gas type is made after
• Change parameter P02. See section 9.6
Commissioning and section 9.15 Parameter
Settings.
• Check minimum gas pressure is suitable for selected gas:
Minimum gas pressure is determined with boiler operating
source operational as well (whole house load)
Gas A (NG) = 3.5" (8.7 mbar)
Gas E (LPG) = 8.0" (19.9 mbar)
• Place supplied label with indication of gas type close
to the data plate of boiler replacing the original.
• Perform Automatic Calibration Function - Section 9.8.
• Manufacturer recommends verication of CO2
concentration on the ue.
FIGURE 9-3 - Gas Inlet Tap - Pi
9 - START UP PROCEDURE
PI = Gas Supply Inlet Pressure Tap
PI
IMPORTANT INFORMATION
A. If gas recognition function is interrupted by power
blackout, start function again when power is
restored. Press
and together and hold at
same time for at least 6 seconds.
B. If display shows fault E118 (low pressure in
restore correct pressure.
C. If gas recognition function is interrupted due
to fault (e.g.: E133 no gas) press
to
reset. Then press and (for at least
6 seconds) to restart the function again.
If gas recognition function is interrupted due to
overheating, restart function by pressing and
holding down together for at least 6 seconds.
D. Combustion of this appliance has been factory
controlled, calibrated and set for operation with
Gas A (Natural Gas).
E. During Gas Type Control Function, combustion ratio
will increase for a short period of time while gas
type is being established.
9.9 Manual Calibration Function:
Manual Calibration phase starts at the end of the
Automatic Calibration.
The Display shows the boiler power and adjustment
of the CO2 value (parameter setting) during Manual
Calibration sequence.
The process begins at minimum power.
A. After Automatic Calibration sequence with
minimum power combustion by pressing
to
lower % CO
2
, and to raise % CO
2
.
B. When minimum power combustion is in the
and then to reach
ignition power.
C. Press to adjust ignition power combustion.
Press to lower % CO
2
, and to raise % CO
2
.
D.
range, press
and then to reach maximum
power.
E. Press to adjust maximum power combustion.
Press to lower % CO
2
, and to raise % CO
2
.
F. When maximum power combustion is in the
press
to exit Manual Calibration
Function. ESC is displayed on the screen.
240013375 REV A, [07/01/2021]
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