16
INS
TALLER
US
ER
MAINTEN
AN
CE TECHNI
CI
AN
Anti-Extruder function.
This 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 Parame-
ter
on
(Standard setting) -
oF
P3
Domestic hot water post circulation function
With the post circulation function active after
domestic hot water flow, the pump remains on
for 2.5 seconds in winter time and 1.5 seconds in
summer time to reduce the formation of limescale.
Activate domestic hot water post circula-
tion
Range of values which can be set Parame-
ter
on
(Standard setting) -
oF
P4
Heating power.
The Nike Star 24 4 ErP boiler
is fitted with an electronic modulation which
adapts the power of the boiler to effective heat
requests of the home. Then the boiler works
normally in a variable gas pressure field between
the minimum heating power and the maximum
heating power depending on the system’s hea-
ting load.
N.B.:
The Nike Star 24 4 ErP boiler is produced
and calibrated in the heating phase to the nomi-
nal heat output. Approximately 10 minutes are
needed to reach the nominal heat output, which
can be changed using the parameter (P6).
N.B:
the selection of the “Minimum heat output”
and “Maximum heat output” parameters, 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 heat output
Range of values which can be set Parame-
ter
from
0
% Imax. to
63
% Imax.
P5
Maximum heat output
Range of values which can be set Parame-
ter
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 often in the heating phase. The boiler
is supplied as per standard with a timer adjusted
at 3 minutes.
Heating ignitions timer
Range of values which can be set Parame-
ter
from
1
to
1
0
1 = 30 seconds
2 = 2 minutes
3 = 3 minutes (Standard setting)
P7
Heating ramp timing.
The boiler performs an
ignition ramp of about 10 minutes to arrive from
minimum power to nominal heating power.
Heating ramp timer
Range of values which can be set Parame-
ter
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. This 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 flashing symbols (8
and 11 fig. 2-1). This function allows the techni-
cian to check the combustion parameters. After
the checks, deactivate the function switching the
boiler off and then on again.
3.10 HEATING TIMER.
The Nike Star 24 4 ErP boiler has an electronic
timing device that prevents the burner from
igniting too often in the heating phase. The 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 functioning 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 functioning mode ( ) the boiler has a
function that makes the pump start at least once
every 3 hours for 30 seconds.
3.12 DOMESTIC HOT WATER CIRCUIT
ANTI-EXTRUDER FUNCTION.
This function reduces the heating temperature
to 57°C if the domestic hot water circulation is
detected in the heating mode. The 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 after the last boiler check/power supply. In
case of functioning in domestic hot water mode
the self-check starts within 10 minutes after the
end of the withdrawing in progress, for duration
of approx. 10 seconds.
N.B.:
during self-check, the boiler remains off,
including signalling.
Summary of Contents for Nike Star 24 4 ErP
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