34
INS
TALLER
US
ER
MAINTEN
AN
CE TECHNI
CI
AN
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. 3.5)
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
Display the temperature measured by the probe on the storage tank unit
-
-
P54.2
Not used
-
-
P54.3
The value displayed does not affect this model
-
-
P54.4
Not used on this boiler model
-
-
P55
Displays the central heating flow temperature at which the boiler func-
tions, calculated by the controls active on the system heat adjustment
-
-
SERVICE
P57
AUTO
- DELTA T = 0:proportional head (see parag. 1.23)
- DELTA T = 5
÷
25 K: constant ∆T (see par. 1.23)
Note:
after selecting DELTA T adequate to the requirements, maximum
(Vmax) and minimum (Vmin) circulating pump speed may be selected
(adjustable from 100% to 75%).
AUTO
0
FIX
Fixed circulator pump speed (adjustable between 100% and 75%)
P62
4000 ÷ 5900 Set the maximum output depending on the domestic hot water, setting
the speed of the fan (in RPM)
(See par. 3.5)
P63
900 ÷ 1500 Set the minimum output depending on the domestic hot water, setting
the speed of the fan (in RPM)
(See par. 3.5)
P64
≤ P62
Set the maximum output depending on room heating. The value must
be less than or equal to P62
(See par. 3.5)
P65
≥ P63
Set the minimum output according to room heating. The value must
be greater than or equal to P63
(See par. 3.5)
P66
P66/A
Without the external probe (optional) it defines the minimum flow
temperature. With the external probe present it defines the minimum
flow temperature corresponding to operation with maximum external
temperature (see graph Fig. 1-6) (it can be set between 20°C and 50°C)
N.B.:
to continue one must confirm the parameter (press “D” or exit
adjustment “P66” by pressing “C”)
20°C
P66/B
Without the external probe (optional) it defines the maximum flow
temperature. With the external probe present it defines the maximum
flow temperature corresponding to operation with minimum external
temperature (see graph Fig. 1-6) (it can be set between 50°C and 85°C)
N.B.:
to continue one must confirm the parameter (press “D” or exit
adjustment “P66” by pressing “C”)
85°C
P66/C
With the external probe present it defines at which minimum external
temperature the boiler must operate at the maximum flow temperature
(see graph Fig. 1-6) (can be set between -20°C and 0°C)
N.B.:
to continue one must confirm the parameter (press “D” or exit
adjustment “P66” by pressing “C”)
-5°C
P66/D
With the external probe present it defines at which maximum external
temperature the boiler must operate at the minimum flow temperature
(see graph Fig. 1-6) (can be set between 5°C and +25°C)
N.B.:
to continue one must confirm the parameter (press “D” or exit
adjustment “P66” by pressing “C”)
25°C
3.8 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.
Attention:
If the international language is to be
restored (A1), see the indications described in
Par. 2.14 (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 central 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).
