Beretta Mynute Green E 30 R.S.I. Manual Para El Instalador Y El Usuario página 18

ENGLISH
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 wa-
ter and the digital monitor (5) indicates the delivery temperature (fig.
4.3b).
Adjustment of the domestic hot water temperature
CASE A heating only with storage tank - adjustment does not apply.
CASE B heating only + external storage tank with thermostat - ad-
justment does not apply.
CASE C heating only + external storage tank with probe - to adjust
the temperature of the domestic hot water in the storage tank, turn
the knob with the symbol
temperature and anti-clockwise to lower it.
The boiler is standby status until, after a heat request, the burner
switches on. The boiler continues to operate until the temperatures
set on the boiler are reached, or the heat request is met; after which
it goes back on standby.
The digital monitor indicates the fault code detected.
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.
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 (only when connected to an external storage tank
with probe)
18
(fig. 30) the
(fig. 33) clockwise to increase water
off (fig. 36), wait
D - SWITCHING OFF
Temporary switch-off
In case of absence for short periods of time, set the mode selector
(fig. 36) to (OFF).
In this way (leaving the electricity and fuel supplies enabled), the
boiler is protected by the following systems:
Anti-frost device: when the temperature of the water in the boiler
falls below 5°C, the circulator and, if necessary, the burner are acti-
vated at minimum output levels to bring the water temperature back
to the values for safety (35°C). During the anti-frost cycle, the symbol
(fig. 37) appears on the digital monitor.
Circulator anti-blocking function: an operation cycle is activated every
24 hours.
DHW Antifreeze (only when connected to an external storage tank
with probe): the function is activated if the temperature measured by
the storage tank probe drops below 5° C. A heat request is generated
in this phase with the ignition of the burner at minimum power, which
is maintained until the water temperature reaches 55° C. During the
anti-frost cycle, the symbol
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
(fig. 37) appears on the digital monitor.
TYPES OF ALARMS
None
Signal
Definitive lockout
Definitive lockout
Definitive lockout
Definitive lockout
Signal