Beretta MYNUTE X C Series Installer And User Manual page 26

MYNUTE X
ƒ Adjust the ambient temperature thermostat to the desired temperature (~20°C) or, if the
system is equipped with a programmable thermostat or timer, ensure that the thermostat
or timer is "active" and set correctly (~20°C)
ƒ Then set the boiler on WINTER or SUMMER depending on the type of operation de-
sired.
ƒ The boiler will start up and continue working until the set temperatures are reached,
after which it will then go back to standby.
8.1 Operating status
For changing the operating status from WINTER to SUMMER to OFF press key 1 until the
icon for the desired function is displayed.
WINTER MODE
ƒ Set the boiler to the WINTER status by pressing key 1 until both the domestic hot water
icon and the heating icon are displayed.
The interface normally displays the delivery temperature unless there is a domestic hot
water request in progress, in which case the domestic hot water temperature is displayed.
ƒ When there is a heat request and the boiler is igniting, the icon
display.
Heating REQUEST, the radiator icon blinks:
SUMMER MODE
ƒ Set the boiler to the SUMMER status by pressing key 1 until the domestic hot water
icon is displayed.
In this status the boiler activates the traditional function of just domestic hot water, the
interface normally displays the delivery temperature. In the event of a domestic hot water
pick up, the display shows the temperature of the domestic hot water.
Domestic hot water REQUEST, the tap icon blinks:
OFF
ƒ Set the boiler to the OFF status by pressing key 1 until the central segments are
displayed.
26
appears on the
Bar
DAY
8.2 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.
The successive pressing of the key C or D on the main screen displays the current value of
the heating setpoint; the value blinks with a frequency of 0.5 sec ON, 0.5 sec OFF and the
icons and come on.
+
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.
8.3 Adjusting the heating water temperature with an outdoor
temperature sensor connected
If an outdoor temperature sensor is installed and thermoregulation is enabled (parameter
P4.18=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 that
automatically calculated by the electronic board, it is possible to change the HEATING
setpoint selecting the desired comfort level within the range (-5 - +5).
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 P4.18 = 0 (menu P4).
8.4 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
C
+
D
RESET MENU
+
RESET MENU