Combustion Check - Beretta MYNUTE X R Installer And User Manual

MYNUTE X R
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
4.14 Sliding delivery (only if water tank connected)
This parameter 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 mo-
dulation 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 "3.19 Access to the
parameters", select DHW menu and then SLIDING TEMP FLOW TEMPERATURE.
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.
4.15 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 "3.19
Access to the parameters") and selecting, from DHW menu, the ANTILEGIO parameter. To
activate the function, using ,
Enter .
4.16 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.
4.17

Combustion check

To carry out the combustion analysis, proceed as follows:
ƒ set the boiler to the OFF status by pressing button 1
20
TEMPERATURE
20°C
22°C
24°C
26°C
28°C
30°C
32°C
35°C
35°C
30°C
25°C
keys, chose value 1 and confirm the selection with
keys, chose value 1 and confirm the selection with
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
icons , , and come on:
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.
b
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.
b
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.
The boiler will operate at maximum heating output and it will be possible to regulate the
combustion.
ƒ Remove the screw and the cover on the air distribution box (
ƒ Insert the analysis probe adapter (
hole for the combustion analysis.
ƒ Insert the flue gases analysis probe into the adaptor.
ƒ Control the combustion, checking that the CO
ƒ When the control is completed, remove the analyser probe and close the combustion
analysis sockets with the relative plugs and screw.
ƒ Put back and keep the analysis probe adapter supplied with the boiler in the
documentation envelope.
b
If the value displayed is different to that shown in the technical data table, DO NOT
CARRY OUT ANY ADJUSTMENTS OF THE GAS VALVE, ask assistance from the
Technical Assistance Centre.
b
The gas valve DOES NOT need adjusting and any tampering with it causes the
boiler to operate irregularly or even not at all.
b
When the combustion analysis is in progress all heat requests are inhibited and a
message is shown on the display.
+
RESET MENU
2 3
).
A-B
) located in the documentation envelope, into the
D
values match those in the table.
2