Beretta MYNUTE GREEN 28 C.S.I. Manual De Instalacion Y Uso página 14

Adjusting heating water temperature
To adjust the heating water temperature turn the knob marked
" " (fig. 20) clockwise to increase and anticlockwise to decrease.
When turning the knob, the required temperature automatically
appears on the digital display.
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 tem-
perature 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. 20) 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.
20
Adjusting domestic hot water temperature
For C.S.I. models: to adjust the domestic hot water temperature
(baths, showers, kitchen, etc.) turn the knob marked "
clockwise to increase and anticlockwise to decrease.
When turning the knob, the required temperature automatically
appears on the digital display. The domestic hot water adjustment
ranges lies between 35 and 60 °C. When choosing the tempera-
ture, both for heating and domestic hot water, the display shows
the value being selected. About 4 seconds after the selection has
been made, the modification is memorised and the display re-
turns to the delivery or domestic hot water temperature read by the
probe.
For R.S.I. models:
- CASE A heating only - adjustment inapplicable
- CASE B heating only + external water tank with thermostat -
adjustment inapplicable
- CASE C heating only + external water tank with probe - to adjust
the temperature of the domestic hot water in the water tank, turn
the temperature selector clockwise to increase and anticlock-
wise to decrease.
The adjustment range lies between 35 and 60 °C.
When choosing the temperature, both for heating and domestic
hot water, the display shows the value being selected. About 4
seconds after the selection has been made, the modification is
memorised and the display returns to the delivery temperature.
21
Working the boiler
If a programmable timer or ambient thermostat are mounted, these
must be switched on and adjusted to higher than ambient tempe-
rature in order to allow the boiler to start.
The boiler remains on standby until the burner ignites as a result
of a demand for heat. The green indicator LED (A, fig. 22), located
on the left-hand side of the panel, lights up to indicate the flame is
present.
A green
indicator LED
boiler status
22
The boiler continues to work until the selected temperatures have
been reached. It then returns to "stand-by" while displaying delivery
temperature.
In the event of a starting or operating fault, the boiler performs a
"SAFETY STOP": the green indicator LED on the control panel
goes out, a fault code flashes on the display (fig. 23) and a red
indicator LED (B) lights up in the event of a shutdown.
To identify the fault codes and reset the boiler, consult the "Indicator
LEDs and faults" section".
23
" (fig. 21)
Reset function
To reset the boiler, turned the function selector to "
then move it to the required position and check that the red
indicator LED has gone out.
At this point, the boiler starts automatically if correct operating
conditions have been restored; when the burner ignites, the
green indicator led lights up and the digital display indicates the
instantaneous operating temperature.
Simply turning the selector to "
If the boiler continues not to work, call in the local Technical
Assistance Service.
24
In normal operating conditions, when the function selector is
turned to " ", the digital display indicates "- -" (fig. 25) unless the
anti-freeze phase (AF) is in progress or the combustion analysis
function is activated (CO).
25
14
B red indicator LED fault
" (fig. 24),
" does not reset the boiler.