4. Check the CO2 percentage on the flue gas analyzer. The percentage must be 9.0% (+/
– 0.3%) for natural
gas. For LPG it must be set to 10.0% (+/-0.3%)
a.) In case the CO2 value is not within tolerance, the value must be adjusted. By pressing [P3] or [P4]
the flame impedance is shown. Use [P3] for increasing the CO2 value. Use [P4] for decreasing the CO2
value.
b.) When the CO2 value is within tolerance confirm with [P2].
5. The fan adjusts to start speed.
- CO2 setting natural gas 9.0% (+/
– 0.3%)
- CO2 setting LPG 10.5% (+/-0.3%)
a.) repeat step 4.
6. The appliance goes to the third and last step (Modulation is 0%).
- CO2 setting natural gas 9.0% (+/
– 0.3%)
- CO2 setting LPG 10.0% (+/-0.3%)
a.) repeat step 4.
7. After accepting the third and last calibration step, the fan of the boiler will continue to run for 10 minutes
without firing. This is the final step of the calibration process. During this time the boiler will not respond to any
heat request, but parameters and setting
s can be changed. When “test” leaves the screen, calibration is finished.
*Note: if 10 minutes fan calibration period is disrupted by disconnection of main power supply, the 10 minutes
calibration time will continue as soon as power is restored.
Automatic calibration
The automatic calibration function enables you to calibrate the boiler without analyser to make sure that the
burns safely without producing CO. This function performs the same procedure as the manual calibration,
but here the flame impedance values go to pre-set values from the data key.
Important NOTE:
Before starting calibration make sure the boiler can transport the produced energy into the
system. For an H model boiler it will perform calibration ONLY in heating circuit so you must turn on all
thermostats and open all zones/pumps before performing auto or manual calibration. In a C model you can do
the same OR run dhw demand showing at MINIMUM 8L flow on the screen of the boiler before starting
calibration.
1. Simultaneously press
[P1] and [P3] for 5 seconds until the text ’test’ appears in the display.
• The ’ladder’ symbol flashes in the display.
• The fan speed (rpm) increases until the start speed is reached. The display shows the speed of the fan.
• The capacity of 100% flashes on the right in the display. 1 and 00 appear alternately in the display.
• The starter current is determined and the boiler ignites. The ’flame’ symbol and the text ‘ok’ appear when
the flame is stable.
• When the speed and the CO2 percentage for the starter capacity of 100% is stable, the boiler will set the
CO2 percentages at the fan capacities for ignition and 0%.
• During this part of calibration a flame will be flashing in middle of the screen and its size will depend on
boiler power.
2.After the last calibration step the fan of the boiler will continue to run for 10 minutes without firing the boiler.
During this time the boiler will not respond to any heat or domestic hot water requests. Installer settings can
be adjusted during this time. When this pro
cedure is completed, “test” leaves the screen and the boiler goes
to the default menu and is ready for use.
*Note: if 10 minutes fan calibration period is disrupted by disconnection of main power supply, the 10 minutes
calibration time will continue as soon as power is restored
Warning
Recalibrate after a software update
When the appliance has been provided with updated software, always:
1 Recalibrate the start current.
2 Check the flame impedance values.
3 Perform the Manual or Automatic calibration procedure.
Service operation
1. Press [P1] and [P2] simultaneously to access the service menu at installer level.
2. Put the figure o
n the left side of the display to ’08’ with [P3] or [P4].
3. Confirm with [P2].
4. Press [P1] and [P2] simultaneously for 5 secon
ds. The boiler starts in service mode. ‘Test’ appears on
the display at the left down corner.
5. Use [P3] to set the appliance to minimum power.
6. Use [P4] to set the appliance to maximum power.
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boiler