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Auto season change Winter - Summer
3.4
The system provides the possibility of making an automatic season
change (from WINTER to SUMMER or vice versa) through the use
of the parameter P1.07 SEASON AUTO-CHANGE.
If the parameter is active (P1.07=1) and the external probe is con-
nected, the change of season occurs automatically. The external
probe value used is the filtered one (I010). If P1.07=1, the settable
parameters P1.08 and P1.09 determine at which temperature
thresholds the transition, summer - winter or vice versa, occurs.
b
Pay attention to the programming thresholds of parameters
P1.08 - P1.09 and the positioning of the external probe, to
avoid unwanted seasonal changes.
When the boiler is connected in a system with MSC/REC12 the
parameters set on the REC12 prevail.
However, it is possible to set the boiler manually in OFF mode, in
this condition the SEASON AUTO-CHANGE function is excluded.
Initial start-up
3.5
ƒ When the power is switched on, the backlight is illuminated, all
the icons and segments light up for 1 second, and the firmware
version is visualised for 3 seconds:
The interface then shows the status active in that moment.
Venting cycle
b
Every time the boiler is powered, the automatic venting cycle
(lasting 6 min) is run. When the venting cycle is in progress,
all heat requests are inhibited (apart from DHW requests
when the boiler is not OFF) and the sliding message -AIR
appears on the interface screen.
The venting cycle can be interrupted by pressing and holding but-
ton 2 (the RESET icon lights up on the display). The cycle can also
be interrupted by a DHW request, if the boiler is not OFF.
ƒ Adjust the room thermostat to the required temperature (~ 20°C)
or, if the system is equipped with a timed thermostat or timer,
make sure it is "active" and adjusted (~ 20°C).
ƒ Now set the boiler on WINTER or SUMMER, depending on the
type of operation required.
ƒ The boiler will start up and then continue working until the set
temperatures are reached, after which it will go back to standby.
Operating status
3.6
To change the operating status from WINTER to SUMMER and
then to OFF, press button 1 until the relative icon appears on the
display.
WINTER MODE
ƒ Bring the boiler to WINTER mode by pressing button 1 until both
the DHW icon and the heating icon appear on the display.
The interface normally displays the delivery temperature unless
there is a DHW request in progress, in which case the DHW
temperature is displayed.
ƒ When there is a heat request and the boiler is igniting, the
icon appears on the display.
Heating REQUEST: the radiator icon flashes
SUMMER MODE (only with a storage tank connected)
ƒ Bring the boiler to SUMMER mode by pressing button 1 until the
DHW icon appears on the display.
ƒ In this status, the boiler activates the traditional "DHW-only"
function and the interface usually shows the delivery tempera-
ture. In the case of DHW supply, the display will show the DHW
temperature.
DHW REQUEST: the tap icon flashes
OFF
ƒ Bring the boiler to OFF by pressing button 1 until central seg-
ments appear on the display.
Adjusting the heating water temperature without
3.7
an outdoor temperature sensor connected
in the case of a boiler with sensor)
If there is no outdoor temperature sensor, the boiler works with a
fixed point. In this case, the HEATING setpoint can be set from the
main screen. Press button C or D to see the current heating set-
point value; the value will flash (0.5 sec ON, 0.5 sec OFF) and the
and
icons will light up.
+
Press button C or D again to set the heating setpoint value within
the predefined range:
[40°C ÷ 80.5°C] for high-temperature systems
[20°C ÷ 45°C] for low-temperature systems
in steps of 0.5°C.
The level bars next to the heating icon show the setpoint value in
relation to the operating range:
- 4 bars activated = max setpoint
- 1 bar activated = min setpoint
38
Bar
DAY
C
C
+
D D
RESET
MENU
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