21
INS
TALLER
US
ER
MAINTEN
AN
CE TECHNI
CI
AN
P12
Maximum heat-
ing 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 function-
ing
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 calibra-
tion
Not used on this model.
- - -
- - -
P16
Valve check
Not used on this model.
- - -
- - -
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 not to start the boiler.
00 - 60
(00 = Function
deactivated)
01 - 60 seconds
00
P18
Display lighting
Establishes the display lighting mode:
00 = (Off) the display lights on if buttons are pressed (time out = 15 seconds).
01 = (Auto) equal to 00, it also lights on to indicate the flame presence.
02 = (On) always on.
00 - 02
01
P19
(if it exists)
Flow off tempera-
ture increase
(Central heating)
Increases the flow off temperature at ignition only in the first 30 seconds.
on - oF
on
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 val-
ues 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 (P06) 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 5 seconds. Its activation is indicated
by the flashing symbols (
Part.
8 and 11 Fig. 10
).
This function allows the technician to check the
combustion parameters. After the checks disable
the function, switching the boiler off and then on
again or simply by pressing the reset button for
about 5 seconds (
Part. 1 Fig. 10
).
The heating power can be set to P06 and P05
by pressing buttons (3 or 4). The power can be
changed by one percentage point by pressing
buttons (5 or 6).
If you wish to run the "chimney sweep" function
in D.H.W., open a D.H.W. tap after switching
the burner on.
Attention:
ensure a sufficient DHW flow, in
order to avoid high temperatures of the water.
The boiler power can be set to 0% and 100%
by pressing buttons (3 or 4). The power can be
changed by one percentage point by pressing
buttons (5 or 6).
Note:
the display of the boiler power percentage
alternates with the display of the temperature
read by the flow probe.
3.10 HEATING TIMER.
The Nike Star 24 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 the “summer” functioning mode ( ) the
boiler has a function that starts the pump at least
once every 24 hours for 30 seconds in order to
reduce the risk of the pump becoming blocked
due to prolonged inactivity.
In the “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 enabled using parameter (P3).
3.13 RADIATORS ANTIFREEZE
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 central 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 wa-
ter mode the self-check starts within 10 minutes
after the end of the withdrawing in progress, for
duration of approx. 10 seconds.
NOTE:
during self-check, the boiler remains off,
including signalling.
