Immergas EOLO STAR 24 5E, Instruction Manual

27

INS

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MAINTEN

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Id 

Parameter

Parameter

Description

Range

(ref. 9 Fig. 2-1)

Default

P00

Solar panels 

selection

The setting of this function is used to set the boiler in order to function with the use 

of solar panels. By setting the parameter P0 in "solar"

on

 mode, the switching off of the 

burner is correlated to the adjustment of the domestic hot water temperature. In 

OFF

mode, the burner is switched off at maximum value.

on - oF

oF

P01

Gas type selec-

tion

The setting of this function is used to adjust the boiler so that it can operate with the 

correct type of gas

nG - Methane

LG - LPG

Set accor-

ding to the 

gas being 

used

P02

Heating switch-

on delay request 

from room 

thermostat and 

remote control.

The boiler is set to switch-on 3 seconds after the request. In the event of particular 

systems (e.g. area systems with motorised thermostatic valves etc.) it may be necessary 

to delay ignition

00 - 20  

(00 = 3 seconds

01 = 30 seconds

02 = 60 seconds

20 = 600 

seconds)

00

P03

Function  

anti-leakage

This function reduces the heating temperature to 57°C in the case that domestic hot 

water circulation is detected in the heating mode.

on - oF

oF

P04

Domestic hot 

water post circu-

lation function

With the post-circulation function active after domestic hot water withdrawal, the pump 

remains on for 2.5 seconds in winter time and 1.5 seconds in summer time to reduce 

the formation of limestone.

on - oF

on

P05

Minimum CH 

output

The boiler also has electronic modulation that adapts the boiler potentiality to the ef-

fective heating demand of the house. Then the boiler works normally in a variable gas 

pressure field between the minimum heating output and the maximum heating output 

depending on the system's heating load.

NOTE:

 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 (P08).

NOTE:

 the selection of the “Minimum heating output” and “Maximum heating output” 

parameters, in presence of a heating request, allows boiler ignition and power supply of 

the modulator with current equal to the value of the respective set value. 

00 - 70 %

Set 

according 

to factory 

inspection

P06

Maximum CH 

output

00 - 99

(99 = 100%)

99

P07

Central heating 

ignitions timer

The boiler has electronic timing, which prevents the burner from igniting too often in 

central heating mode

01 - 20

01 = 30 seconds 

02 = 60 seconds 

20 = 600 

seconds

06

P08

Central heating 

ramp timer

In the ignition phase, the boiler performs an ignition ramp in order to arrive at the 

maximum nominal power set.

01 - 20

01 = 30 seconds 

02 = 60 seconds 

20 = 600 

seconds

20

P09

Boiler type

Not used on this model.

01

01

P10

Power 

ignition

Establishes the power at which the boiler must switch on. The 1st gas valve step 

soft ignition step can be set. The ignition power increases as the parameter value is 

increased.

00 - 40

00

P11

Minimum hea-

ting setting

Defines the minimum flow temperature

35 - 80 °C

35 °C

P12

Maximum hea-

ting setting

Defines the maximum flow temperature

35 - 80 °C

80°C

P13

Temperature 

gradient

Change the insufficient circulation intervention value (E27)

00 - 15 

(0 = Function 

deactivated)

11

P14

Pump functio-

ning

The pump can function in two ways:

oF

 intermittent: in "winter" mode, the circulator is managed by the room thermostat 

or by the remote control.

on 

continuous: in "winter" mode the circulator is always powered and is therefore 

always in operation.

oF - on

oF

P15

Gas valve cali-

bration

Allows the gas valve to be calibrated

5

 = complete calibration

different from 5

 = calibration correction

00 - 20

00

P16

Valve check

Attention:

 do not change this parameter

00 - 02

02

P17

Solar delay

The boiler is set to switch-on immediately after a request for DHW. In the case of 

coupling with a solar storage tank positioned upstream from the boiler, it is possible to 

compensate the distance between the storage tank and the boiler in order to allow the 

water to reach the boiler. Set the time necessary to verify that the water is hot enough.

00 - 60 

(00 = Function 

deactivated)

01 - 60 seconds

00