Beretta MYNUTE X C Installer And User Manual page 18

MYNUTE X
4.8 Adjusting the heating water temperature without an outdoor
temperature sensor connected
If there is no outdoor temperature sensor the boiler operates at a fixed point, the HEATING
setpoint in this case can be set on the main page of the screen. Pressing the key C or D
displays the current heating setpoint; the value blinks with a frequency of 0.5 sec ON, 0.5
sec OFF and the icons and
+
The successive pressing of the key C or D allows you to set the value of the heating setpoint
within the preset range:
[40°C - 80.5°C] for high temperature systems
[20°C - 45 °C] for low temperature systems
with steps of 0.5°C.
The level bars beside the heating icon show the setpoint value set with respect to the
operating range:
- four bars on = max setpoint
- one bar on = min setpoint
Keeping one of the two keys C or D pressed for longer, the meter increases the speed of
advancement modifying the set value. If no key is pressed for 5sec, the value set is taken
as the new heating setpoint and the display returns to the main page.
4.9 Adjusting the heating water temperature with an outdoor
temperature sensor connected
If an outdoor temperature sensor is installed and thermoregulation is enabled (parameter
OTR=1), the delivery temperature is automatically selected by the system, which quickly
adjusts the ambient temperature according to the variations in the outdoor temperature. If
you want to change the temperature, raising it or lowering it with respect to the temperature
automatically calculated by the electronic board, it is possible to change the HEATING setpoint
as follows: press the keys C or D and select the desired level of comfort within the range (-5 -
+5) (see paragraph "4.5 Setting the thermoregulation").
Note: if an outdoor temperature sensor is connected it is in any event possible to have the
boiler operate at a fixed point by setting the parameter OTR = 0 (menu CH).
4.10 Adjusting the domestic hot water temperature
On the main screen, pressing the key A rather than B displays the current domestic hot
water setpoint, the value blinks with a frequency of 0.5 sec ON, 0.5 sec OFF and the icons
and come on.
A
+
B
The successive pressing of the keys A or B allows you to set the value of the domestic hot
water setpoint raising or lowering the value within the preset range in steps of 0.5°C.
The level bars beside the heating icon show the setpoint value set with respect to the
operating range:
- four bars on = max setpoint
- one bar on = min setpoint
18
come on.
C
+
D
RESET MENU
+
RESET MENU
4.11 Safety stop
If there are ignition faults or boiler operation malfunctions, carry out a "SAFETY STOP". On
the display, in addition to the fault code, the icon
frequency of 0.5sec ON and 0.5sec OFF.
The backlight blinks for 1min after which it switches off, while the icon
On the 4 digits a message scrolls containing the error code and its description.
4.12 Reset function
The RESET icon comes on when there is an alarm that requires a manual reset by the user
(for example flame lockout). To reset press key 2 RESET.
If the release attempts do not restart the boiler, contact your local Technical Assistance
Centre.
4.13 Domestic hot water comfort function
Pressing the keys A+B for at least 2sec gives you access to the domestic hot water comfort
functions. COMFORT OFF is shown on the display and the icons
come on:
Using the keys , you can scroll through the options in sequence COMFORT
STANDARD, COMFORT SMART and then again COMFORT OFF. Using the
activates the desired function and you exit the menu returning to the initial screen.
A scrolling message appears on the display with the following mode:
Function
COMFORT STANDARD
COMFORT SMART
COMFORT OFF
COMFORT STANDARD (PREHEATING)
By setting the COMFORT STANDARD, the domestic hot water preheating function of the
boiler activates. This function keeps the water in the domestic hot water exchanger hot, to
reduce standby times when a request is made. When the preheating function is enabled the
scrolling message PREHEATING FUNCTION IN PROGRESS is displayed. To deactivate
the preheating function set COMFORT OFF. The function is not active when the boiler is
OFF.
is also displayed, which blinks with a
continues blinking.
DAY
DAY
RESET
,
Scrolling message
PREHEATING function active
TOUCH & GO function active
-
, and
key