Immergas EOLO STAR 24 5E, Instruction Manual

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 Attention:

 if during the adjustment phase, the 

boiler nominal heat output value is exceeded by 

0.2 mbar (table para. 3.15) you must exit and 

re-enter from the calibration step to rerun the 

adjustment.

• Adjustment of boiler minimum thermal heat 

output.

-  Press button (3) or (4) to select parameter b01 

(minimum boiler heat output during D.H.W.).

Note:

 only proceed after having calibrated the 

boiler nominal heat output.

- Press the button (5) to increase the thermal 

power and button (6) to decrease it. After the 

adjustment, press and hold the reset button 

(1) to save the parameter. Confirmation that 

the parameter has been saved is given by the 

value flashing.

- Adjust the boiler nominal heat output in hea-

ting phase (para. 3.7 parameter “P5”).

- Adjust (eventually) the maximum heating 

power (para. 3.7 parameter “P6”).

Calibration correction.

The procedure described below allows the para-

meters set with the "Complete calibration" and 

the default ones to be partially changed.
Access the valve calibration function.

Note:

 there must be no D.H.W. demand to access 

the gas valve calibration function.
If parameter P15 has recently been set to 5 (e.g. 

for full gas valve calibration), a different value 

must be set to access the "Calibration correc-

tion" or simply cutting-out the power supply 

to the boiler.
• Correction of boiler nominal heat output cali-

bration.

- Press buttons (2) and (5) simultaneously for 5 

seconds until ''Ma'' + "nu" appears alternately 

on the display.

Note:

 press buttons (2) and (5) again for 5 se-

conds or wait 2 minutes without implementing 

any adjustment to exit from the calibration 

correction phase.

- Wait until the parameter b02 appears 

(adjustment of the boiler nominal heat output).

Note:

 the boiler starts up in heating mode; if 

you wish to adjust the D.H.W., open a hot water 

tap after the burner goes on.

-  Adjust parameter b02, observing the maximum 

pressure values stated in the tables (Para. 3.15) 

depending on the type of gas.

- Press the button (5) to increase the thermal 

power and button (6) to decrease it. After the 

adjustment, press and hold the reset button 

(1) to save the parameter. Confirmation that 

the parameter has been saved is given by the 

value flashing.

• Correction of boiler minimum heat output 

calibration.

-  Press button (3) or (4) to select parameter b01 

(minimum boiler heat output during D.H.W.).

- Press the button (5) to increase the thermal 

power and button (6) to decrease it. After the 

adjustment, press and hold the reset button 

(1) to save the parameter. Confirmation that 

the parameter has been saved is given by the 

value flashing.

- Adjust the boiler nominal heat output in hea-

ting phase (para. 3.7 parameter “P5”).

- Adjust (eventually) the maximum heating 

power (para. 3.7 parameter “P6”).

3.7  PROGRAMMING THE P.C.B.

The boiler is prepared for possible programming 

of several operation parameters. By modifying 

these parameters as described below, the boiler 

can be adapted according to specific needs.
To access the programming phase, proceed as 

follows (references Fig. 2-1):
- press buttons (1) and (2) for 5 about seconds 

until the programming mode is accessed on 

the display;

-  Using keys (3) and (4), select the parameter to 

be changed indicated in the following table:

- adjust the corresponding value consulting the 

table using keys (5) and (6): first pressure of 

buttons displays the current value;

-  confirm the value set by pressing the Reset but-

ton (1) for about 5 seconds. Only the displayed 

value is saved.

Note:

 2 minutes after no button is touched 

will automatically cancel the operation or by 

pressing buttons (1) and (2) simultaneously for 

about 5 seconds. Modified but not confirmed 

values are to be restored to the value preceding 

the modification.