Immergas NIKE MYTHOS 24 2E Series, Instructions And Warnings

Page: 26 / 32

26
INS
TALLER
US
ER
MAINTEN
AN
CE TECHNI
CI
AN
Id
Parameter
Parameter Description
Range
(ref. 9 Fig. 2-1)
Default
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 accord-
ing 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
0 - 20
(00 = 3 seconds
01 = 30 seconds
02 = 1 minute
20 = 10 minutes)
0
P03
Fixed or correlat-
ed domestic hot
water set-point
By setting the parameter P3 in
on
mode, burner disabling is correlated to the adjust-
ment of the domestic hot water temperature. In OFF mode, the burner is switched off
at maximum value.
on - related
oF - fixed
oF
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.
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 (P06).
N.B.: 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.
0 - 63 %
Set ac-
cording
to factory
inspection
P06
Maximum CH
output
0 - 100 % 100
P07
Central heating
ignitions timer
The boiler has electronic timing, which prevents the burner from igniting too often in
central heating mode
0 - 10 minutes
(0 = 30 sec-
onds)
3
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.
0 - 10 minutes
(0 = 30 sec-
onds)
10
P10
Power
block
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.
0 - 40 0
P13
Temperature
gradient
Change the insufficient circulation intervention value (E27)
0 - 15
(0 = Function
deactivated)
11
P14 Boiler type
Establishes the boiler type and its functioning mode
1 = open chamber boiler (NIKE)
2 = sealed chamber boiler (EOLO)
1 - 2 2
P15
Gas valve
calibration
Allows the gas valve to be calibrated
5 = complete calibration
different from 5 = calibration correction
0 - 20 0
P16 Valve check Attention: do not change this parameter 0 - 2 2
Note:
parameters P00, P04, P09, P11 and P12 are not used for this boiler model.
3.8 "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 (8 and 11 Fig. 2-1). This
function allows the technician to check the com-
bustion 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 (1 Fig. 2-1).
The maximum heating power can be set to P06
and P05 by pressing buttons (3 or 4). The power
can be adjusted by one percentage point by press-
ing 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.
The maximum boiler power can be set to 0% and
100% by pressing buttons (3 or 4). The power can
be adjusted 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.
3.9 HEATING TIMER.
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. To
adjust the timer values, follow instructions for
parameter settings by selecting parameter (P07)
and set it with one of the values indicated on the
relative table.
3.7 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 (references Fig. 2-1):
3.10 THREE-WAY ANTI-BLOCK
FUNCTION.
The boiler is supplied with a function that ac-
tivates the motorised three-way unit every 24
hours, carrying out a complete cycle in order
to reduce the risk of three-way block due to
prolonged inactivity.
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.
- press buttons (1) and (2) for 5 about seconds
until the programming mode is accessed on
the display;
- using buttons (3) and (4), select the parameter
to be changed indicated in the following table:
- adjust the corresponding value consulting the
table using keys (5) and (6)
- confirm the value set by pressing the Reset
button (1) for about 5 seconds.
Note: 2 minutes after no button is touched
will automatically cancel the operation or by
pressing buttons (1) and (2) simultaneously
for about 5 seconds.