Beretta MYNUTE GREEN E Installer And User Manual page 9

the hot water system temperature, the icon to indicate the hot water
supply and the flame icon (fig. 4b)
Pre-heating (faster hot water): rotate the domestic hot water tem-
perature adjustment knob (4 - fig. 1a) to the
to activate the pre-heating function. This function keeps the water
in the domestic hot water exchanger hot, to reduce standby times
when a request is made. When the pre-heating function is enabled,
the monitor indicates the delivery temperature of the heating water
or the domestic hot water, according to the current request. During
burner ignition following a pre-heating request, the monitor indi-
cates the symbol (fig. 5b).
To deactivate the pre-heating function, rotate the domes-
tic 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 activat-
ed when the boiler is OFF: function selector (3 fig.1a) on
Mynute Green R.S.I. E:
Summer mode (only with the external water tank connected):
turning the selector to the symbol summer
tional function of only domestic hot water is activated and the boiler
supplies water at the temperature set on the external storage tank.
If there is a domestic hot water request the digital display shows
the hot water system temperature, the icon to indicate the hot water
supply and the flame icon
Winter mode: by turning the mode selector within the area marked
+ and - (fig. 3b), the boiler provides hot water for heating and - if
connected to an external storage tank - domestic hot water. If there
is a heat request, the boiler switches on and the digital monitor in-
dicates the heating water temperature, the icon to indicate heating
and the flame icon (fig. 4a). If there is a domestic hot water request,
the boiler switches on and the digital display shows the hot water
system temperature, the icon to indicate the hot water supply and
the flame icon (fig. 4b).
Adjust the room thermostat to the required temperature (~20°C)
Adjustment of the heating water temperature
To adjust the heating water temperature, turn the knob with symbol
(fig. 3b) within the area marked + and -.
Depending on the type of system, it is possible to pre-select the
suitable temperature range:
- standard systems 40-80°C
- floor systems 20-45°C.
For further details, consult the "Boiler configuration" section.
Adjusting heating water temperature with an external probe
connected
When an external probe is connected, the value of the delivery
temperature is automatically chosen by the system which rapidly ad-
justs ambient temperature to the changes in external temperature.
To increase or decrease the temperature with respect to the value
automatically calculated by the electronic board, turn the heating
water selector (fig. 3b) clockwise to increase and anticlockwise to
decrease.
Adjustment settings range from comfort levels - 5 to + 5 which are
indicated on the digital display when the knob is turned.
Mynute Green C.S.I. E: Adjustment of domestic hot water tem-
perature
To adjust domestic water temperature (bathrooms, showers, kitch-
en, etc.), turn the knob with symbol
marked + and -.
The boiler is standby status until, after a heat request, the burner
switches on and the digital display shows the hot water system
temperature, the icon to indicate the hot water supply and the flame
icon.
The boiler will be in function until the adjusted temperature is
reached, afterwards it will be in "standby" again.
Mynute Green R.S.I. E: Adjustment of the domestic hot water
temperature
CASE A heating only - 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-but with the symbol clockwise to increase water tempera-
ture and anti-clockwise to lower it.
The boiler is standby status until, after a heat request, the burner
symbol (fig. 5a),
OFF.
(fig. 3a) the tradi-
(fig. 3b) within the area
switches on and the digital display shows the hot water system
temperature, the icon to indicate the hot water supply and the
flame icon The boiler will be in function until the adjusted tempera-
ture is reached, afterwards it will be in "standby" again.
Environment Automatic
(S.A.R.A.) fig. 7a
By setting the heating water temperature selector to the area
marked by AUTO - temperature value from 55 to 65°C - the
S.A.R.A. self-adjusting system is activated: the boiler varies the
delivery temperature according to the closing signal of the room
thermostat. When the temperature set with the heating water tem-
perature selector is reached, a 20 minutes count begins. If during
this period the room thermostat still requests heat, the value of the
set temperature automatically increases by 5 °C.
When the new value is reached, other 20 minutes count begins.
If during this period the room thermostat still requests heat, the
value of the set temperature automatically increases by 5 °C.
This new temperature value is the result of the temperature set
manually with the heating water temperature selector and the in-
crease of +10 °C of the S.A.R.A function. After the second cycle
the temperature value should be kept at the set value +10°C until
the request of the room thermostat is satisfied.
4.3 Switching off
Temporary switching off
In case of absence for short periods of time, set the mode selector
(3 - fig. 1a) to (OFF) (fig. 2a).
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 tempera-
ture back to the values for safety (35°C). During the anti-frost
cycle, the symbol 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 tempera-
ture reaches 55° C. During the anti-frost cycle, the symbol
appears on the digital monitor.
Long period switching off
In case of absence for long periods of time, set the mode selector
(3 - fig. 1a) to (OFF) (fig. 2a). Then, close the gas tap present on
the system. In this case, anti-frost device is deactivated: empty the
systems, in case of risk of frost.
4.4 Light signals and faults
The operating status of the boiler is shown on the digital display,
below is a list of the types of displays.
To restore operation (deactivate alarms):
Faults A 01-02-03
Position the function selector to
set it to the required position
mode). If the reset attempts do not reactivate the boiler, contact the
Technical Assistance Centre.
Fault A 04
In addition to the fault code, the digital display shows the symbol
Check the pressure value indicated by the water gauge:
if it is less than 0.3 bar, position the function selector to
and adjust the filling tap (B fig. 17 for C.S.I. - external for R.S.I.)
until the pressure reaches a value between 1 and 1.5 bar.
Then position the mode selector to the desired position
mer) or (winter).
If pressure drops are frequent, request the intervention of the Tech-
nical Assistance Service.
Fault A 06
The boiler operates normally but cannot reliably maintain a con-
stant domestic hot water temperature, which remains set at around
50°C. Contact the Technical Assistance Centre.
Fault A 07
Contact the Technical Assistance Centre.
Mynute Green C.S.I. E - R.S.I. E
Adjustment System Function
(OFF), wait 5-6 seconds then
(summer mode) or (winter
.
(OFF)
(sum-
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