Immergas EOLO STAR 24 3 E - Automatic Slow Ignition Function with Timed Ramp Delivery; Chimney Sweep Function; Heating Timer; Pump Anti-Block Function

21 - IE
INSTALLATORUSERTECHNICIAN
Anti-Extruder function. is function reduces
the heating temperature to 57°C in the case that
domestic hot water circulation is detected in the
heating mode.
Activate anti-extruder function
Range of values which can
be set
Parameter
on (Standard setting) - oF P3
Domestic hot water post circulation function
With the post circulation function active aer
domestic hot water ow, the pump remains on
for 2.5 seconds in winter time and 1.5 seconds
in summer time to reduce the formation of
lime scale.
Activate domestic hot water post circula-
tion
Range of values which can
be set
Parameter
on (Settaggio di serie) - oF P4
Heating power. e Eolo Star 24 3 E boiler is t-
ted with an electronic modulation which adapts
the power of the boiler to eective heat requests
of the home. en the boiler works normally in a
variable gas pressure eld between the minimum
heating power and the maximum heating power
depending on the system’s heating load.
N.B.: e Eolo Star 24 3 E boiler is produced and
calibrated in the heating phase to the nominal
heat output. Approximately 10 minutes are nee-
ded to reach the nominal heat output changeable
using parameter (P6).
N.B.: the selection of the “Minimum heating
power” and “Maximum heating power” parame-
ters, 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 heating power
Range of values which can
be set
Parameter
from 0 % Imax. to 63 % Imax. P5
Maximum heating power
Range of values which can
be set
Parameter
from 0 % Imax. to 99 % Imax.
(Standard setting)
P6
Timer setting. The boiler has an electronic
timing device that prevents the burner from
igniting too oen in the heating phase. e boiler
is supplied as per standard with a timer adjusted
at 3 minutes.
Heating ignitions timer
Range of values which can
be set
Parameter
from 1 to 10
1 = 30 seconds
2 = 2 minutes
3 = 3 minutes (Standard
setting)
P7
Heating ramp timing. e boiler performs an
ignition ramp of about 10 minutes to arrive from
minimum power to nominal heating power.
Heating ramp timing
Range of values which can
be set
Parameter
from 1 to 10
1 = 30 seconds
2 = 2 minutes
10 = 10 minutes (Standard
setting)
P8
3.8 AUTOMATIC SLOW IGNITION
FUNCTION WITH TIMED RAMP
DELIVERY.
In the ignition phase the P.C.B. carries out an
increasing gas delivery ramp (with pressure va-
lues that depend on the type of gas selected) with
preset duration. is prevents every calibration
or precision adjustment of the boiler ignition
phase in any conditions of use.
3.9 “CHIMNEY SWEEP FUNCTION”.
When activated, this function forces the boiler
at max. output for 15 minutes.
In this state all adjustments are excluded and
only the temperature safety thermostat and the
limit thermostat remain active. To activate the
chimney sweep function, press the Reset key for
at least 10 seconds with the boiler on stand-by. Its
activation is indicated by the ashing symbols (8
and 11 Fig. 2-1). is function allows the techni-
cian to check the combustion parameters. Aer
the checks, deactivate the function switching the
boiler o and then on again.
3.10 HEATING TIMER.
e Eolo Star 24 3 E boiler has an electronic
timing device that prevents the burner from
igniting too oen in the heating phase. e boiler
is supplied as per standard with a timer adjusted
at 3 minutes. To adjust the timer values, follow
instructions for parameter settings by selecting
parameter (P7) and set it with one of the values
indicated on the relative table.
3.11 PUMP ANTIBLOCK FUNCTION.
In summer function mode (
) the boiler has a
function that starts the pump at least once every
24 hours for the duration of 30 seconds in order
to reduce the risk of the pump becoming blocked
due to prolonged inactivity.
In winter function mode (
) the boiler has a
function that makes the pump start at least once
every 3 hours for 30 seconds.
3.12 FUNZIONE ANTITRAFILA
CIRCUITO SANITARIO.
is function reduces the heating temperature
to 57°C if the domestic hot water circulation is
detected in the heating mode. e function can
be excluded using parameter (P3).
3.13 RADIATORS ANTIFREEZE
FUNCTION.
If the system return water is below 4°C, the boiler
starts up until reaching 42°C.
3.14 P.C.B. PERIODICAL SELFCHECK.
During functioning in heating mode or with
boiler in standby, the function activates every 18
hours aer the last boiler check/power supply. In
case of functioning in domestic hot water mode
the self-check starts within 10 minutes aer the
end of the withdrawing in progress, for duration
of approx. 10 seconds.
N.B.: during self-check, the boiler remains o,
including signalling.