indicate the Room and Comfort Set point. Use buttons
to set the required temperature, which will
be used during the Comfort periods programmed for
Central Heating. en press to access icons
and and XX.X EA, with XX.X ashing to indicate the
Reduced Room Set point. Use buttons to set
the required temperature, which will be used during the
Reduced temperature periods programmed for Central
Heating. To return to normal operating mode, press
or wait 60”.
Programming the day of the week and current time
Press for at least 3" to access the Programming and
display and the current time, while the day of the
week ashes under . To modify the set value (ashing),
use buttons (1=Monday, 7=Sunday). Press
to set the time. To change the set value (ashing),
press . Press to set the minutes. To
change the set value (ashing), press . To
return to normal operating mode, press or wait 60”.
Time programming of the Central heating opera-
tion
e time program is a set of 8 times in which the system
switches from adjusting the comfort room temperature
(ON) to adjusting the reduced room temperature (OFF)
and vice-versa.
Note: To exclude a time band, the ON times must corre-
spond to the OFF times.
Time program set from Monday to Friday.
Saturday and Sunday Comfort from 7.00 to 23.00, Re-
duced from 23.00 to 7.00.
For Central Heating during comfort periods, the value set
as Room Comfort Set point (XX.X CA) is used as Room
set point, whereas, during the other periods, the value
set as Room Reduced temperature set point (XX.X EA)
or Reduced is used.
In the event the pre-set program is not ecient, you can
change it as described below:
Press for at least 3" to access the Programming and
display icons and and the current time. Press
several times to display the xed icons and and
the ashing icon and the day of the week (ashing).
Use buttons to select the day or group of days
in which the modication regarding the heating time
programming must be applied:
1 Monday
2 Tuesday
3 Wednesday
4 ursday
5 Friday
6 Saturday
7 Sunday
1 5 From Monday to Friday
6 7 Saturday and Sunday
1 6 From Monday to Saturday
1 7From Monday to Sunday
Press to conrm the day or group of days. e rst
ON time appears ashing (indicated with icon and
point number 1). Use buttons to select the
ON1 time and pass to the subsequent point 2by pressing
. e rst OFF time appears ashing (indicated by
the absence of icon and point number 2). Use but-
tons to select the OFF1 time and pass to the
subsequent point 3by pressing . Continue this way
until the last point OFF4 is reached (point8). To return to
normal operating mode any time, press or wait 60”.
Restoring default settings
Press buttons simultaneously for 10" to dis-
play CLr (which will disappear). is way, all the default
settings and programming will be restored and the user
settings will be deleted permanently.
Summary of the default settings
Function / Window Factory setting
Operating prog. WINTER
Manual Room set point 20.0°C
DHW set 50 °C
Regulation Constant 1.5
Current time 00:00 1
Room Comfort set 20.0 °C
Room Economy set 16.0 °C
Maximum central heating
set *
Building inertia/dimension 10
Regulation Algorithm Type 3
Room Antifreeze Temp. 5.0 °C
Central Heating time
program
Mon..Fri: Comfort 06:00-8:00 /
11:00-13:00 / 17.00-23.00
Sat..Sun: Comfort 07:00-23.00
ERRORS AND FAULTS
Faults indications and boiler release
In the presence of a fault, the display will show Er:XX in
normal operation mode, where XX indicates the type of
fault in the boiler. If Er:XX LC is displayed, the fault can
be solved by pressing .
No communication with the boiler.
SPECIAL FUNCTIONS FOR THE TECHNICIAN
To access the special functions described below, press
and then for 3''. en select the required
function by pressing until the corresponding mes-
sage is displayed. Once you have made the modications,
wait 60" for the mini CRD to return to normal operation.
Regulation algorithm and relative parameters
selection
• Regulation Constant: A high parameter value involves
a greater Central heating Temperature calculated as the
other parameters. Once you have accessed the menu,
press until X.X hr appears, with X.X ashing to
indicate the Regulation Constant value. Use buttons
to set the value between 0.5 and 6.5, which
will be used during regulation. Wait 60" before return-
ing to normal operating mode
• Building dimension or inertia: A high parameter
value involves lower reactivity and greater stability
of the regulation algorithm. For small environments
with low inertia, we recommend low values; for larger
environments or in the presence of high inertia, we
recommend higher values. To view/modify the value,
press and for 3". Once you have accessed
the menu with and , press several
times to display icon and XX bd, with XX ashing
to indicate the Building Dimension value. Use buttons
to set the value between 1 and 10, which will
be used during regulation. Wait 60'' before returning
to normal operating mode
• Algorithm type (room or modulation probe exclu-
sion): e type of algorithm to be used during regu-
lation can be selected according to the value assigned
to an associated variable. Once you have accessed the
menu with and , ppress several times
to display icon and XAL, with X ashing to indicate
the value of the regulation algorithm type selected. Use
buttons to set the required value (0 / 3).
e meaning of the values is the following:
0 AL room and modulating probes deactivated (the sys-
tem runs with Central Heating Set Point xed and
settable by the user: (Maximum Central Heating
Set point), regardless of the room temperature
level).
1 AL room probe deactivated and modulation probe
activated (the system runs with variable Central
Heating Set Point calculated according to the
Regulation Constant, regardless of the room tem-
perature level).
2 AL room probe activated and modulating probe deac-
tivated (the system runs with xed Central Heating
set point settable when the room temperature is
below that set and remains o when it is exceeded)
3 AL room probe and modulation probe activated
(the system runs with variable Central Heating
Set Point calculated according to the Regulation
Constant and at the room temperature compared
to that set).
To return to normal operating mode, press or
wait 60”.
TECHNICAL FEATURES
• Connection to boiler via non-polarised twisted pair
(2x0.75 mm, maximum length 50 m).
• No auxiliary supply voltage or batteries are required.
• Load reserve time in the absence of connection/supply
voltage for at least 8 hours.
• User's settings and programming permanent memori-
sation.
• Operating temperature range 0 – 50°C
• Measurement precision ±0.5°C at 25°C.
• Max clock diversion ±15 minutes / year.
• Electric construction standard EN 60730-1.
Product specications.
In accordance with Regulation 811/2013 the temperature
control device class is:
Class
Contribution to the
environmental heating
seasonal energy eciency
Description
V +3% Mini CRD
VI +4% Mini CRD coupled to outer
sensor
Fig. 5
00:00 6:00 8:00 11:00 13:00 17:00 23:00 24:00
ON1---OFF1 ON2---OFF2 ON3-----------------OFF3
ON4=OFF4
