Beretta MYNUTE X C Series Installer And User Manual page 18

MYNUTE X
4.12 Domestic hot water comfort function
Pressing the keys A+B for at least 2sec gives you access to the domestic hot water comfort
functions. COFF is shown on the display and the icons
Using the keys , you can scroll through the options in sequence CSTD, CSMT and
then COFF again. Using the key 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
CSTD
CSMT
COFF
CSTD (PREHEATING function)
By setting CSTD, 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 COFF. The function is not active when the boiler is OFF.
CSMT (TOUCH&GO function)
If you do not want PRE-HEATING to be always active and you want hot water immediately
ready, it is possible to preheat the domestic hot water just a few moments before taking it.
Set CSMT to activate the Touch & Go function. This function allows you, by opening and
closing the tap, to start the instantaneous preheating that prepare the hot water only for that
water take. When the Touch & Go function is enabled the scrolling message TOUCH AND GO
FUNCTION IN PROGRESS is displayed.
4.13 Special domestic hot water functions
The boiler has special functions more a more efficient management of the domestic hot
water when there a high domestic hot water temperature input.
By programming the P5.11 parameter it is possible to activate one or all the following
functions, for more information about setting the parameter see the relative paragraph "4.3
Boiler configuration".
- Domestic hot water delay function: this function introduces a programmed delay in
the starting of the boiler in domestic hot water mode. The delay time is given by the
parameter P5.10.
- Absolute thermostats domestic hot water function: normally the boiler in domestic
hot water mode switches on and off based on thermostats related to the value of the
domestic hot water setpoint (off at setpoint + 5°C and switching back on at setpoint
+ 4°C). Activating this function the boiler will switch on ad off based on thermostats
independent of the domestic hot water setpoint (off at setpoint + 65°C and switching back
on at 63°C).
4.14 Screed heating function
For a low temperature system the boiler has a "screed heating" function that can be
activated in the following way:
ƒ set the boiler to OFF by pressing button 1
ƒ access the technical parameters menu, as indicated in the paragraph "3.22 Access to
the parameters"
ƒ select the P4 menu and then P4.09 with the keys
with .
(Note: SCREED HEATING is not available if the boiler is a status other than OFF).
ƒ To activate the function set the parameter to 1, to deactivate it set the parameter to 0.
The "SCREED HEATING" function lasts 168 hours (7 days) during which, in the zones
configured as low temperature, a heating request is simulated with an initial zone outlet of
20°C, then increased in line with the table on the side.
Accessing the INFO menu from the main page of the interface it is possible to display
the I0.01 value regarding the number of hours that have passed since the activation of
the function. Once activated, the function takes priority, if the machine is shut down by
disconnecting the power supply, when it is restarted the function picks up from where it was
interrupted. The function can be interrupted before it has finished by setting the boiler to a
status other than OFF or by selecting P4.09 = 0 from the menu P4.
18
, , and come on:
Scrolling message
COMFORT STANDARD
COMFORT SMART
COMFORT OFF
, , confirming the selection
Note: The temperature and increase values can be set to different values only by qualified
personnel, only if strictly necessary. The manufacturer declines all responsibility if the
parameters are incorrectly set.
DAY TIME
1 0
6
12
18
2 0
12
3 0
4 0
5 0
6 0
7 0
4.15 Checks during and after the first commissioning
After starting up, check that the boiler carries out the start-up procedures and subsequent
shut-down properly.
ƒ Check the domestic hot water operation by opening a hot water tap in SUMMER mode
or WINTER mode.
ƒ Check the full stop of the boiler by turning off the system's main switch.
ƒ After a couple of minutes of continuous operation, which can be obtained by turning
the system's main switch to "on", setting the boiler mode selector to SUMMER and by
keeping open the domestic hot water device, the binders and manufacturing residues
evaporate and it will be possible to carry out the check of the combustion.
4.16 Combustion check
To carry out the combustion analysis, proceed as follows:
ƒ set the boiler to the OFF status by pressing button 1
ƒ activate the combustion control function by pressing buttons 2+3 for at least 2sec
+
ƒ the display shows the scrolling text CO and the icons
ƒ pressing interrupts the operation
ƒ using the , keys it is possible to change the speed of the fan between MIN and
MAX confirming the selection with
ƒ the number of revs set, together with the rpm icon, are shown on the display for 10sec.
TEMPERATURE
20°C
22°C
24°C
26°C
28°C
30°C
32°C
35°C
35°C
30°C
25°C
+
RESET MENU
2 3
, , and come on: