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Cod. 3541T090 - Rev. 00 - 06/2019

BOILER CONTROLLER - SERVICE MENU

Checking the combustion values

MAKE SURE THE FRONT CASING IS CLOSED AND THE INTAKE/FUME EXHAUST DUCTS ARE COMPLETELY ASSEMBLED.

1. Put the boiler in heating or DHW mode for at least 2 minutes. During this period if the flame symbol flashes on the display, it means that the boiler is performing a

calibration. Wait until the flame becomes steady (end of calibration).

2. Activate the TEST mode (see “TEST mode activation” on page 68).

3. By means of a combustion analyzer, connected to the points located on the starting accessories above the boiler, check that the CO2 content in the fumes, with

boiler working at maximum and minimum output, matches that given in the following table.

Case studies G20 G30/G31 G230

A New boiler (first ignition/conversion or electrode replacement) 7,5%-9,9% 9%-11,5% 9%-11,5%

B Boiler with at least 500 hours of operation 9%+/-0,8 10%+/-0,8 10%+/-0,8

4. If the combustion values do not match, perform the 100% calibration as described in the following paragraph.

5. Case A: if the values still do not match, do not activate other calibrations, as the system needs to work longer to be able to self-adapt.

6. Case B: if the values still do not match yet, proceed with activation of the parameter SC12 or SC13, depending on the type of adjustment necessary (see ““Sc” -

Combustion Control Parameters Menu” on page 72)

100% calibration

IMPORTANT: DURING THE AUTOMATIC CALIBRATION PROCEDURE AND CHECK OF THE CO2 VALUE, THE FRONT CASING OF THE BOILER MUST BE

CLOSED AND THE INTAKE/FUME EXHAUST DUCTS COMPLETELY ASSEMBLED.

100% calibration, manual

Calibration procedure.

• 100% calibration, manual

• Calibration procedure.

• Put the boiler (preferably) in heating mode or else in DHW mode. Press the Reset button (detail 6 - fig. 151) for 10 seconds.

• The display shows 100 and the text ”Co” flashing; press the “Heating +” button (ref. 4 fig. 151) to set and view 120.

• Then press the “DHW +” button (ref. 2 fig. 151) to set 123.

• Press the Reset button (ref. 6 fig. 151) once.

• The display shows Ts flashing; press the “heating +” button (ref. 4 fig. 151) once.

• The display shows Sc flashing; press the reset button once.

• The display shows Sc alternating with 01 flashing;

• Press the “heating +” button (ref. 4 fig. 151) until displaying Sc alternately with 15 flashing;

• Press the “DHW +” button and the display shows “00”;

• Press the “DHW +” button and the display shows “01”;

• Press the “heating +” button (ref. 4 fig. 151) and the 100% calibration mode will activate, displaying the message “CA ” and “LI” alternating.

• After calibration, the display will show Sc alternating with 15 flashing.

• Press Reset (ref. 6 fig. 151) for 10 seconds to exit the Sc menu.

100% calibration, automatic

Automatic calibration can take place in some cases in the absence of a DHW or heating demand or after a reset due to a fault and is indicated on the display by the

flashing flame symbol.

Loading parameters with “BCC KEY”

The “BCC KEY” device allows the updating of combustion parameters for boiler type.

It is used in case of replacement of the PCB of some boiler models.

To use the “BCC KEY”, refer to the instructions contained in the kit code 3980H730.

TEST mode activation

Perform a heating or DHW demand.

Press the heating buttons (detail 3 and 4 - fig. 151) together for 5 seconds to activate TEST mode. The boiler lights at the maximum heating power set as described

in the following section.

The heating and DHW symbols (fig. 166) flash on the display; the heating power will appear alongside.

fig. 166 - TEST mode (heating power = 100%))