Beretta MYNUTE X C Installer And User Manual page 19

COMFORT SMART (TOUCH & GO)
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 COMFORT SMART to activate the TOUCH & GO function. This function allows you,
by opening and closing the tap, to start the instantaneous pre-heating that prepare the hot
water only for that water take.
4.14 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, for example when the
boiler is used with a solar storage cylinder. By programming the SUN ON parameter it is
possible to activate one or all the following functions, for more information about setting the
parameter see the relative paragraph "4.4 Boiler configuration".
- Domestic 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 DHW DELAY.
- 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).
4.15 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 "3.20 Access to
the parameters"
ƒ select the CH menu and then SCREED HEATING with the keys
the selection 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 heater" 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
TIME FUNC SCREED HEATING 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 SCREED HEATING = 0 from the menu CH.
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
4.16
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
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
4.17
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 COMBUSTION ANALYSIS IN PROGRESS and the
, , confirming
ƒ pressing
ƒ using the
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
b
28°C
30°C
32°C
35°C
b
35°C
30°C
25°C
Checks during and after the first commissioning
or WINTER mode.
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.
Combustion check
+
icons , , and come on:
interrupts the operation
, keys it is possible to change the speed of the fan between MIN and
MAX confirming the selection with
With the OT device connected it is not possible to activate the combustion control
function. To carry out the flue gases analysis, disconnect the OT connection wires
and wait 4 minutes, or else cut off the electrical supply and reconnect power to the
boiler.
The combustion analysis function is normally carried out with the three-way valve
positioned on heating. It is possible to switch the valve to domestic hot water
generating a domestic hot water heat request at maximum output while the function
itself is being carried out. In this case the temperature of the domestic hot water is
limited to a maximum of 65°C. Wait for the burner to fire.
+
RESET MENU
2 3
ENGLISH
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