41
SELECTING THE THERMOREGULATION CURVE (PARA-
METER P4.19)
The thermoregulation curve for heating maintains a theoretical
temperature of 20°C indoors, when the outdoor temperature is
b20°C and -20°C. The choice of the curve depends
on the minimum outdoor temperature envisaged (and
therefore on the geographical location), and on the delivery
temperature envisaged (and therefore on the type of system).
It is carefully calculated by the installer on the basis of the
following formula:
KT =
T. outlet envisaged - Tshift
20- min. design external T
Tshift = 30°C standard system
25°C floor installations
If the calculation produces an intermediate value between two
curves, you are advised to choose the thermoregulation curve
nearest the value obtained.
Example:
if the value obtained from the calculation is 1.3,
this is between curve 1 and curve 1.5. Choose the nearest
curve, i.e. 1.5.
The settable KT values are as follows:
standard system: 1.0-3.0
floor system 0.2-0.8.
Through the interface it is possible to access the menu P4 and
the parameter P4.19 to set the pre-selected thermoregulation
curve:
access the technical parameters menu, as indicated in the
paragraph “
5.1 Access to the parameters”
select the menu P4 and then P4.19
press the key t
o confirm
set the desired climatic curve with the
and
arrow
keys
confirm with
Enter
.
THERMOREGULATION CURVES
T80 Maximum temperature heating setpoint for std systems
T45 Maximum temperature heating setpoint for floor systems
3,0
100
90
80
70
60
50
40
30
20
20
Te
mperatura di mandata (°C)
Temperatura esterna (°C)
15 10
5
0
-5 -10 -15 -20
2,5
2,0
1,5
T80
1,0
0,8
0,6
0,4
0,2
T45
CURVE DI TERMOREGOLAZIONE
EXTERNAL TEMPERATURE (°C)
DELIVER
Y TEMPERA
TURE (°C)
OFFSET ON THE REFERENCE AMBIENT TEMPERATURE
The user can, in any event, indirectly intervene on the value of
the HEATING setpoint setting, with reference to the reference
temperature (20°C), an offset within the range -5 - +5 (offset
0 = 20°C). For correcting the offset see the paragraph “5.8.5
Adjusting the heating water temperature with an outdoor
temperature sensor connected”.
90
80
70
60
50
40
30
20
10
30
Te
mperatura di mandata (°C)
Temperatura esterna (°C)
25 20 15
+5°C
0°C
-5°C
10 5
0 -5 -10 -15 -20
CORREZIONE CURVA CLIMATICA
CLIMATE CURVE CORRECTION
EXTERNAL TEMPERATURE (°C)
DELIVER
Y TEMPERA
TURE (°C)
NIGHT COMPENSATION (PARAMETER P4.20)
If a ROOM THERMOSTAT is connected to a programming
timer, from the menu P4 parameter P4.20 the night
compensation can be enabled.
To set the night compensation:
access the technical parameters menu, as indicated in the
paragraph “
5.1 Access to the parameters”
select the menu P4 and then P4.20
press the key
to confirm
set the parameter to 1
confirm with
Enter
.
In this case, when the CONTACT is CLOSED, the heat
request is made by the flow sensor, on the basis of the outdoor
temperature, to obtain a nominal ambient temperature on DAY
level (20°C). The opening of the contact does not produce a
switch-off, but a reduction (parallel translation) of the climatic
curve on NIGHT level (16°C). Also in this case, the user can
indirectly modify the value of the HEATING setpoint inserting
once again an offset on the reference DAY temperature
(20°C) rather than NIGHT (16°C) that can vary within the
range [-5 - +5]. For correcting the offset see the paragraph
5.8.5 Adjusting the heating water temperature with an outdoor
temperature sensor connected.
90
80
70
60
50
40
30
20
10
Te
mperatura di mandata (°C)
Temperatura esterna (°C)
20
15
10
5
0
-5
-10 -15 -20
RIDUZIONE NOTTURNA PARALLELA
Curva climatica GIORNO
Curva climatica NOTTE
EXTERNAL TEMPERATURE (°C)
DELIVER
Y TEMPERA
TURE (°C)
PARALLEL NIGHT TIME REDUCTION
DAY TEMPERATURE
CURVE
NIGHT TEMPERATURE
CURVE
8.13 LIGHTS AND FAULTS
When there is a fault the icon blinks with a frequency of
0.5sec ON and 0.5sec OFF, the backlight blinks for 1min with
a frequency of 1sec ON and 1sec OFF after which it switches
off; while the bell continues to flash.
On the 4 digits of the display a scrolling message that
describes the error code is shown.
DAY
When a fault occurs the following icons can appear:
-
it comes on when there is a flame alarm (E010)
-
RESET comes on when there is an alarm that requires the
manual reset by the user (flame lockout for example)
-
comes on together with the icon
, except for flame
and water alarms.
RESET FUNCTION
In order to reset the boiler’s operation in the event of a fault,
it is necessary to press the RESET button. At this point, if the
correct operating conditions have been restored, the boiler will
restart automatically. There are a maximum of 3 consecutive
attempts.
DAY
DAY
