15
3-3
4
3
2
1
5
6
4
3
2
1
6
5
INS
TALLER
US
ER
MAINTEN
AN
CE TECHNI
CI
AN
SIT 845 GAS valve
Key:
1 - Coil
2 - Minimum power adjustment
nut
3 - Maximum power adjustment
nut
4 - Gas valve outlet pressure point
5 - Gas valve inlet pressure point
6 - Protection hood
VK 4105 M GAS valve
3.5 CHECKS FOLLOWING
CONVERSION TO ANOTHER TYPE
OF GAS.
After making sure that conversion was carried
out with a nozzle of suitable diameter for the
type of gas used and the settings are made at the
correct pressure, check that:
- there is no flame in the combustion chamber;
- the burner flame is not too high or low and that
it is stable (does not detach from burner);
- the pressure testers used for calibration are
perfectly closed and there are no leaks from
the gas circuit.
N.B.:
all boiler adjustment operations must be
carried out by a qualified company (e.g. After-
Sales Technical Assistance). Burner adjustment
must be carried out using a differential “U” or
digital type manometer connected to the gas
valve outlet pressure point (part. 4 fig. 3-3),
keeping to the pressure value given in the table
(par. 3.17) according to the type of gas for which
the boiler is prepared.
3.6 POSSIBLE ADJUSTMENTS.
• Adjustment of boiler nominal thermal heat
output.
- Press the (+) key to adjust the domestic hot water
temperature (3 fig. 2-1) up to the maximum
functioning temperature.
- Open the domestic hot water cock in order to
prevent modulation intervention.
- Adjust the boiler nominal power on the brass nut
(3 Fig. 3.3), keeping to the maximum pressure
values stated in the tables (Par. 3.17) depending
on the type of gas.
- By turning in a clockwise direction the heating
potential increases and in an anti-clockwise
direction it decreases.
• Adjust the boiler minimum heat input in the
domestic hot water phase (Fig. 3-3).
N.B.:
only proceed after having calibrated the
nominal pressure.
To adjust the minimum thermal output in do-
mestic hot water phase, turn the nut (2) located
on the gas valve blocking the brass nut (3);
- disconnect the power supply to the modulating
coil (just disconnect a faston); by turning the
screw in a clockwise direction, the pressure
increases, in an anti-clockwise direction it de-
creases. On completion of calibration, re-apply
the power supply to the modulating coil. The
pressure to which the boiler minimum power
must be adjusted, must not be lower than that
stated in the tables (par. 3.17) depending on the
type of gas.
N.B.: to adjust the gas valve, remove the plastic
cap (6); after adjusting, refit the cap
.
• Adjustment of the boiler minimum heat output
in heating phase.
N.B.:
only proceed after having calibrated the
minimum domestic hot water pressure.
To adjust the minimum heat output during the
heating phase, change parameter (5), increasing
the value the pressure increases, reducing it the
pressure drops.
- The pressure to which the boiler minimum heat
output must be adjusted, must not be lower than
that stated in the tables (parag. 3.17).
3.7 PROGRAMMING THE P.C.B.
The Nike Star 24 4 ErP boiler is prepared for
possible programming of several functioning
parameters. By modifying these parameters as de-
scribed below, the boiler can be adapted according
to specific needs.
To access the programming phase (Fig. 2-1),
proceed as follows:
- press keys (1) and (2) at the same time for
approximately 15 seconds;
- Using keys (3) and (4), select the parameter to
be changed indicated in the following table:
List of
parame-
ters
Description
P0
Select solar panels
P1
Select gas type
P2
Select special G110 gas
P3
Activate anti-extruder function
P4
Activate domestic hot water post
circulation
P5
Minimum heat output
P6
Maximum heat output
P7
Heating ignitions timer
P8
Heating ramp timer
- adjust the corresponding value consulting the
table using keys (5) and (6);
- confirm the set value pressing the reset key
(1) for approximately 5 seconds; pressing keys
(3) + and (4) - at the same time to adjust the
domestic hot water temperature, the operation
is cancelled.
N.B.:
after a period of time, without touching
any keys, the operation cancels automatically.
Select solar panels
By selecting this function,
the boiler is set to be used with 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 tempera-
ture. In OFF mode, the burner is switched off at
the maximum value.
N.B.:
together with a solar valve kit, set the
parameter P0 in “solar”on mode (correlated).
Select solar panels
Range of values which can be set Parame-
ter
on
"solar" -
oF
(Standard settings)
P0
Select gas type
The setting of this function is used
to adjust the boiler in order to function with LPG
gas or Methane gas.
Select gas type
Range of values which can be set Parame-
ter
LG
(LPG) o
nG
(Methane) (Stan-
dard setting)
P1
Town Gas G110 –
Industrial gas. The setting of
this function is used to adjust the boiler in order
to function with gases from the first family.
Town Gas G110 - Industrial gas (first family
gas)
Range of values which can be set Parame-
ter
on
-
oF
(Standard setting)
P2
Содержание Nike Star 24 4 ErP
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