Immergas MINI EOLO 28 3E, Instruction And Warning Booklet

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3.4  INFORMATION MENU.

Pressing the buttons (3 and 4) for 5 seconds, the 

“Information menu” is activated, which allows 

to display some boiler functioning parameters. 

To scroll through the various parameters, press 

(3 and 4), to exit from the menu press buttons 

(3 and 4) again for 5 seconds or press button (2) 

for 5 seconds or wait for 60 seconds.

List of parameters.

Parameter 

N°

Description

d1

Displays the flame signal (uA)

d2

Displays the primary exchanger 

output instant heating flow 

temperature

d3

Displays the instant output 

temperature from the DHW 

exchanger

d4

Displays the temperature set for 

the central heating set (if remote 

control is present)

d5

Displays the temperature set for 

the DHW set (if remote control 

is present)

d6

Displays the external environ-

ment temperature (if external 

probe is present). If the tempera-

ture is below zero, the value is 

displayed flashing.

3.5  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:
- press buttons (1) and (2) at the same time for 

approximately 8 seconds;

-  Using buttons (3) and (4), select the parameter 

to be changed indicated in the following table:

List of  

parameters

Description

P1

Boiler mode  

(DO NOT USE)

P2

Display lighting

P3

DHW thermostat

P4

Minimum CH output

P5

Maximum CH output

P6

Central heating ignitions 

timer

P7

Central heating ramp timer

P8

Heating switch-on delay 

request from room thermostat 

and remote control

P9

Solar mode

- adjust the corresponding value consulting the 

table using buttons (5) and (6);

-  confirm the set value pressing the Reset button 

(1) for approximately 3 seconds; by pressing 

keys (3) + and (4) - at the same time exit the 

function without memorising the modifica-

tions made.

N.B.:

 after a period of time, without touching 

any keys, the operation cancels automatically.

Boiler mode.

 It establishes whether the boiler 

functions in instant or storage mode.

Boiler mode (P1)

Range of values which can 

be set

Standard 

setting

0 - instant boiler

1 - Boiler with storage tank

0

Display lighting.

 Establishes the display light-

ing mode.

Display lighting (P2)

Range of values which can 

be set

Standard 

setting

0 - Off 

1 - Auto

2 - On

1

- Off:

 the display is always lit with low intensity

- Auto:

 the display lights up during use and 

lowers after 5 seconds of inactivity. In the case 

of anomaly the display flashes.

- On:

 the display is always lit with high intensity.

DHW thermostat.

 With the “correlated” ther-

mostat setting, boiler switch-off takes place on 

the basis of the temperature set. While with 

the setting of the “fixed” DHW thermostat the 

switch-off temperature is fixed at the maximum 

value independently from the value set on the 

control panel.

DHW thermostat (P3)

Range of values which can 

be set

Standard 

setting

0 - Fixed

1 - Correlated

1

Heating output.

 The boiler also has electronic 

modulation that adapts the boiler potentiality to 

the effective heating demand of the house. Then 

the boiler works normally in a variable gas pres-

sure field between the minimum heating power 

and the maximum heating power depending on 

the system’s heating load.

N.B.:

 the boiler is produced and calibrated in 

the central heating phase at nominal output. 

Approximately 10 minutes are needed to reach 

the nominal heat output, which can be changed 

using the parameter (P5).

N.B.:

 the selection of the “Minimum heating 

power” and “Maximum heating power” param-

eters, in the presence of a heating request, allows 

switch-on of the boiler and power supply of the 

modulator with current equal to the value of the 

respective set value.

Minimum central heating output (P4)

Range of values which can 

be set

Standard 

setting

0 - 63%

Set ac-

cording 

to factory 

inspection

Maximum heating output (P5)

Range of values which can 

be set

Standard 

setting

0 - 99%

99

Central heating ignitions timer.

 The boiler has 

electronic timing, which prevents the burner 

from igniting too often in central heating mode. 

Central heating ignitions timer (P6)

Range of values which can 

be set

Standard 

setting

0 - 20 (0 - 10 minutes)  

(01 equals 30 seconds)

6

(3’)

Central heating ramp timing.

 In the ignition 

phase, the boiler performs an ignition ramp in 

order to arrive at the maximum power set.

Central heating ramp timer (P7)

Range of values which can 

be set

Parametro

0 - 28 (0 - 14 minutes)  

(01 equals 30 seconds)

28

(14’)