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Beretta Mynute Green E 25 C.S.I. Manual Para El Instalador Y El Usuario página 18

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Adjusting the heating water temperature with an external probe
connected
When an external probe is installed, the delivery temperature is au-
tomatically selected by the system, which quickly adjusts the ambi-
ent temperature according to variations in the outside temperature.
If you want to alter the temperature value (increasing or reducing
the value automatically calculated by the electronic card), use the
heating water temperature selector: turn it clockwise to increase the
temperature, or anticlockwise to reduce it. The correction possibility
is between -5 and +5 levels of comfort, shown on the digital display
by rotating the knob.
Summer
Turning the mode selector to the summer symbol
traditional function of only domestic hot water is activated. The boiler
ignites automatically in response to a request for domestic hot water
and the digital monitor (5) indicates the domestic hot water temper-
ature (fig. 4.3b).
Pre-heating (faster hot water)
Positioning the mode selector to summer or winter and turning the
domestic hot water temperature adjustment knob to the
(Fig. 31) the pre-heating function is activated. Bring the domestic hot
water temperature adjustment knob back to the required position.
This function keeps the water in the domestic hot water exchang-
er hot, to reduce standby times when a request is made. When the
pre-heating function is enabled, the
The display indicates the outlet temperature of the heating water or
the domestic hot water based upon the request in progress.
During burner ignition following a pre-heating request, the monitor
indicates the
symbol.
To deactivate the pre-heating function, rotate the domestic hot water
temperature adjustment knob back to the symbol
Bring the domestic hot water temperature adjustment knob back to
the required position.
This function cannot be activated when the boiler is OFF: mode se-
lector set to
(OFF) (fig. 32).
Adjustment of the domestic hot water temperature
To adjust domestic water temperature (bathrooms, showers, kitch-
en, etc.), turn the knob with the
marked with + and -.
The boiler is in standby until the burner switches on following a heat
request.
The boiler continues to function until the temperatures set on the
boiler are reached, or the heat request terminates; it will then go back
to standby.
If the red indicator light near the
mand panel lights up, this means the boiler is in temporary stop sta-
tus (see the chapter on light signals and faults).
The digital monitor indicates the fault code detected (fig. 34).
E -
LIGHT SIGNALS AND FAULTS
BOILER STATUS
Off status (OFF)
Stand-by
ACF alarm lockout module
ACF electronics fault alarm
Limit thermostat alarm
Tacho fan alarm
Water pressure switch alarm
NTC domestic water fault
18
(fig. 30) the
symbol
symbol is on (fig. 31).
.
symbol (fig. 33) within the area
symbol (Fig. 34) on the com-
Automatic Ambient Adjustment System (S.A.R.A.) (fig. 35)
By setting the heating water temperature selector to the area marked
by AUTO, the S.A.R.A. self-adjusting system is activated (frequency
0.1 sec. on; - 0.1 sec. off; duration 0.5): according to the temperature
set on the ambient thermostat and the time employed to reach it,
the boiler varies automatically the heating water temperature reduc-
ing the operating time, allowing great operation comfort and energy
saving.
Reset function
To restore operation, set the mode selector to
5-6 seconds then bring it to the required position, checking that the
red indicator light is off.
At this point the boiler will automatically start and the red lamp switch-
es on in green.
N.B. If the attempts to reset the appliance do not activate operation,
contact the Technical Assistance Centre.
D - SWITCHING OFF
Temporary switch-off
In the event of absence for short periods of time, set the mode selec-
tor (fig. 36) to
(OFF).
In this way (leaving the electricity and fuel supplies enabled), the
boiler is protected by the following systems:
Antifreeze: when the temperature of the water in the boiler drops
below 5°C the circulator starts and, if necessary, the burner at mini-
mum output to bring the water temperature to safety values (35°C).
During the anti-frost cycle, the
digital monitor.
Circulator antiblocking: an operation cycle is activated every 24 h.
Switching off for lengthy periods
In the event of absence for short periods of time, set the mode selec-
tor (fig. 36) to
(OFF).
Turn the main system switch OFF.
Turn off the fuel and water taps of the heating and domestic hot water
system. In this case, anti-frost device is deactivated: empty the sys-
tems, in case of risk of frost.
DISPLAY
OFF
-
A01
A02
A03
A04
A06
off (fig. 36), wait
symbol (fig. 37) appears on the
TYPES OF ALARMS
None
Signal
Definitive lockout
Definitive lockout
Definitive lockout
Definitive lockout
Signal

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