Beretta Mynute Green E 30 R.S.I. Manual Para El Instalador Y El Usuario página 9

Mynute Green E R.S.I.
Summer
Turning the selector to the summer mode symbol (fig. 30) acti-
vates the traditional domestic hot water only function, the boiler
supplies water at the temperature set on the external storage tank.
If there is a domestic hot water request, the boiler switches on. The
digital display shows the hot water system temperature, the icon to
indicate the hot water supply and the flame icon (fig. 29).
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 (fig. 33) clockwise to increase water
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 function selector to off (fig. 36), wait
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.
4.3 Switch-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 activated 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
(fig. 37) appears on the digital monitor.
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.
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