Beretta Mynute Green E 25 C.S.I. Installer And User Manual page 9

The digital monitor indicates the heating water temperature (fig. 28).
In the event of a request for domestic hot water.
The display indicates the domestic hot water temperature (fig. 29).
Adjusting the heating water temperature
To adjust the heating water temperature, turn the knob with the "
" symbol (fig. 27) clockwise to the area marked with + and -.
Depending on the type of system, the most suitable temperature
range can be pre-selected:
- standard installations 40-80°C
- floor installations 20-45 °C.
For details see section 4.5.
Summer
Turning the selector to the
function of only domestic hot water is activated.
The boiler lights automatically in response to a request for domestic
hot water.
The digital monitor indicates the domestic hot water temperature
(fig.29).
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 exchanger
hot, to reduce standby times when a request is made.
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 (fig.32) on OFF.
Adjusting the heating water temperature with an external probe
connected
When an external probe is installed, the delivery temperature is auto-
matically selected by the system, which quickly adjusts the ambient
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 comfort levels which
are shown on the digital display by rotating the knob.
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
panel lights up, this means the boiler is in temporary stop status (see
the chapter on light signals and faults).
The digital monitor indicates the fault code detected (fig. 34).
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.
summer symbol (fig. 30) the traditional
.
symbol (fig. 33) within the area
symbol (fig. 34) on the command
Reset function
To restore operation, set the function 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.
4.3 Switch-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 symbol
digital monitor.
Circulator antiblocking: an operation cycle is activated every 24 h.
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.
Mynute Green E C.S.I.
off (fig. 36), wait
(fig. 37) appears on the
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