Beretta MYNUTE X R Installer And User Manual page 18

MYNUTE X R
4.10 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.
4.11 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.
4.12 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 "3.21 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 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
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.
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
18
is also displayed, which blinks with a
continues blinking.
DAY
DAY
RESET
, , confirming the selection
TEMPERATURE
20°C
22°C
24°C
26°C
28°C
DAY TIME
12
3 0
4 0
5 0
6 0
7 0
4.13 Sliding delivery (only if water tank connected)
The parameter P5.07 allows you to activate thee SLIDING TANK FLOW TEMPERATURE
function for changing the delivery setpoint used by the boiler, when in domestic hot water
request mode. The factory setting for this parameter is = function not active,which provides
for a modulation to a fixed delivery of 80°C, when in domestic hot water request mode. To
activate the value access the technical parameters as explained in the section "3.21 Access
to the parameters", select P5 menu and then P5.07.
To activate the function, using ,
Enter
. In this case the delivery setpoint, when in domestic hot water request mode, is no
longer fixed at 80°C, but can be changed and calculated automatically by the boiler on the
basis of the difference between the desired domestic hot water setpoint and the temperature
measured by the water tank probe. Note: it is not advisable to activate this function for water
tanks with a capacity greater than 100 litres, loading the cylinder would be too slow. It might
be necessary to reset the value of this parameter when replacing the adjustment board.
4.14 Anti-legionella function (only if connected to a water tank
with probe)
The machine has an automatic ANTI-LEGIONELLA function that, daily or weekly depending
on the settings selected, if necessary heats the domestic hot water at 65°C keeping it at
that temperature for 30 minutes, thereby destroying any proliferation of bacteria in the water
tank. The function is not carried out if the temperature of the water tank reached 65°C over
the last 24h, for daily scheduling, or in the last 7 days, in the case of weekly scheduling.
The function, if activated, is carried out every day at 03:00am if programmed on a daily
basis, or else every Wednesday at 03:00am if programmed on a weekly basis. Once
activated, the function takes top priority and cannot be interrupted.
b
The function is not carried out with the boiler set to OFF.
ANTILEGIONELLA function can be activated by accessing the parameters menu (see "3.21
Access to the parameters") and selecting, from P5 menu, the P5.01 parameter. To activate
the function, using , keys, chose value 1 and confirm the selection with
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 (if water tank connected) by opening a hot
water tap in SUMMER (if water tank connected) 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
TEMPERATURE
30°C
32°C
35°C
35°C
30°C
25°C
keys, chose value 1 and confirm the selection with
Enter
.