Immergas 3.025499, Instruction And Recomendation Booklet

Page: 41 / 68

41
INS
TALLER
US
ER
MAINTEN
AN
CE TECHNI
CI
AN
Calibration of the maximum CO
2
(nominal
central heating power).
On completion of the adjustment of the mini-
mum CO
2
keeping the chimney sweep function
active, take the heating selector switch to maxi-
mum (turn it in a clockwise direction until “99”
is seen on the display). To have an exact value of
CO
2
in the flue gases the technician must insert
the sampling probe to the bottom of the sample
point, then check that the CO
2
value is that speci-
fied in the table, otherwise adjust the screw (12
Fig. 3-4) (gas flow rate regulator).
To increase the CO
2
value, turn the adjustment
screw (12) in an anti-clockwise direction and vice
versa to decrease it.
At every adjustment variation on the screw 12 it
is necessary to wait for the boiler to stabilise itself
at the value set (about 30 sec.).
CO
2
at nominal
output
(central heating)
CO
2
at minimum
output
(central heating)
G 20 9.50% ± 0.2 8.95% ± 0.2
G 30 12.40% ± 0.2 11.80% ± 0.2
G 31 10.40% ± 0.2 10.00% ± 0.2
3.8 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 the burner flame is
not too high or low and is stable (does not detach
from burner);
Note:
all boiler adjustment operations must be
carried out by a qualified company (e.g. Author-
ised After-Sales Assistance).
3.9 PROGRAMMING THE BOILER P.C.B.
The Magis Hercules ErP boiler is prepared for
possible programming of several operating
parameters. By modifying these parameters as
described below, the boiler can be adapted ac-
cording to specific needs.
Attention: if the international language is to be
restored (), see the indications described in Par.
2.7 (customisations menu - M3).
By pressing the button "D" it is possible to access
the main menu, divided into three main parts:
- Information“M1” (See “User” Chapter)
- customisations “M3” (See “User” Chapter)
- “M5” configurations, menu reserved for the
technician and for which a password is re-
quired.
To access programming, press button “D”, turn
the heating temperature selector switch (3) and
scroll through the menu items until reaching
“M5”, press button “D”, enter the password and
set the parameters according to requirements.
Listed below are the items in the“M5” menu
with default parameters and possible options
indicated.
By turning the central heating temperature se-
lector switch (3) scroll through the menu items.
By pressing button “D” access the various levels
of the menu and the choice of parameters is
confirmed. Press button “C” to go back one level.
(The first item of the various options that appears
inside the parameter is that selected by default).
M5 menu
(password must be entered)
1st Level 2nd Level Options Description
Default
value
Value
set by the
technician
P50 25
÷
50
Set the boiler power in the ignition stage. The value is in percentage with
respect to parameter P62
(See par.
3.6)
P53
P53 1
Identifies the power of the boiler on which the P.C.B. is installed
P53 1 = Not used
P53 2 = 26 kW
P53 3 = 32 kW
Equal to
boiler
power
Equal to
boiler
power
P53 2
P53 3
P54
P54.1
Displays the temperature measured by the probe positioned in the top part of
the storage tank unit
- -
P54.2
Displays the temperature measured by the probe positioned in the bottom part
of the storage tank unit (controlled by the solar circuit)
- -
P54.3
Displays the temperature measured by the probe on the boiler return
- -
P54.4 Displays the temperature measured by the probe on the solar collector.
P55 Not used - -
SERVICE
P57
AUTO
- DELTA T = 0:proportional head (see parag. 1.30)
- DELTA T = 5
÷
25 K: constant ∆T (see par. 1.30)
AUTO
15 K
FIX Fixed circulator pump speed (adjustable between 100% and 30%)
P62 4000 ÷ 5900
Set the maximum output depending on the domestic hot water, setting the speed
of the fan (in RPM)
(See par.
3.6)
P63 900 ÷ 1500
Set the minimum output depending on the domestic hot water, setting the speed
of the fan (in RPM)
(See par.
3.6)
P64 ≤ P62
Set the maximum output depending on room heating. The value must be less
than or equal to P62
(See par.
3.6)
P65 ≥ P63
Set the minimum output depending on room heating. The value must be greater
than or equal to P63
(See par.
3.6)
P66
P66/A Not used
P66/B Not used
P66/C Not used
P66/D Not used