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ENGLISH
If there is a heat request, the boiler switches on and the digital
monitor indicates the heating water temperature, the icon to indicate
heating and the flame icon (fig. 27). 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. 28).
b
Positioning the mode selector to
water temperature adjustment knob (4 - fig. 24) to the
the chimney sweep function is activated (for exclusive use of the
Technical Assistance Service).
- 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. 26) 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 "4.5 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
adjusts 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. 26) 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 temperature
To adjust domestic water temperature (bathrooms, showers, kitchen,
etc.), turn the knob with symbol
"+" 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 -
adjustment 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
and anti-clockwise to lower it.
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.
Environment Automatic Adjustment System Function (S.A.R.A.)
fig. 33
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 temperature 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 increase
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 met.
16
(OFF) and the domestic hot
(fig. 32) within the area marked
clockwise to increase water temperature
D - SWITCHING OFF
Temporary switch-off
In the event of absence for short periods of time, set the mode selector
(fig. 24) 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
symbol,
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
appears on the digital monitor (fig. 34).
- 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
the digital monitor (fig. 34).
Switching off for lengthy periods
In the event of absence for short periods of time, set the mode selector
(fig. 24) 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
systems, in case of risk of frost.
E -
CONTROLS
At the beginning of the heating season, and occasionally during use,
make sure the hydrometer-thermohydrometer indicates cold system
pressure values between 0.6 and 1.5 bar: this avoids system noise
levels due to the presence of air. In case of insufficient water circulation,
the boiler will switch off. Under no circumstances, water pressure must
be below 0.5 bar (red field).
If this condition is checked, it is necessary to restore water pressure in
the boiler proceeding as follows:
- set the mode selector (3 - fig.24) to
- turn on the filling tap (C fig. 18 for C.S.I. - external for R.S.I.) until the
pressure value is between 1 and 1.5 bar (fig. 19).
Carefully close the tap. Replace the mode selector on the initial position.
If pressure drop is frequent, contact the Technical Assistance Service.
F -
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
it to the required position
If the reset attempts do not reactivate the boiler, contact the Technical
Assistance Centre.
Fault A04
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
adjust the filling tap (C fig. 18 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
or
(winter).
If pressure drops are frequent, request the intervention of the Technical
Assistance Service.
Fault A06
The boiler operates normally but cannot reliably maintain a constant
domestic hot water temperature, which remains set at around 50°C.
Contact the Technical Assistance Centre.
Fault A07 - A08
Contact the Technical Assistance Centre.
(OFF)
(OFF), wait 5-6 seconds then set
(summer mode) or
(winter mode).
appears on
.
(OFF) and
(summer)
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