Rinnai Zen I24 User And Installation Manual page 17

1.4.6 AUTO MODE ( AUTO )
Auto mode will be also indicated by the abbreviation AUTO.
The AUTO mode enables the boiler to adapt the regular flow temperature of the heating circuit to the values of the
outdoor ambient temperature, in complete autonomy. The auto mode only works on the heating mode and not on the
production of hot domestic water.
The device periodically monitors the external temperature in order to adjust the internal flow temperature by means of
a sensor: in the cold seasons, the boiler will be able to adjust the heating circuit's water's temperature proportionally to
the outdoor temperature reduction; the other way round, the boiler will lower the indoor temperature to adjust it to the
rising outdoor temperature in the warmer seasons.
The device works autonomously, adjusting its own functioning to the actual temperatures of the current season. This
provides a greater domestic comfort while reducing polluting emissions and fuel consumption.
To activate the AUTO mode, perform the following steps.:
•
Press the button
a light blue symbol will appear on the display
function is activated;
if the heating mode is active, the display will appear as shown in the
figure on the right;
To leave the AUTO mode:
•
Press once the button
When AUTO mode is on, the boiler will not consent you
to modify the heating temperature: this value is entirely
automatically managed. AUTO mode has to be disabled to
NOTE
change the temperature.
ENERGY - SAVING MODE ( SAVE )
1.4.7
Energy-save mode will also be mentioned as SAVE.
Energy-saving mode exclusively operates on the heating mode and not on
the domestic hot water production. When the SAVE mode is on, the boiler
modifies the on/off operation of the burner. IN SAVE mode, the upper
temperature settings that the controller can be set to are limited (in order to
reduce energy consumption). So the maximum selectable room temperature
shall be 20°C and the maximum flow temperature shall be limited to 60°C.
To activate SAVE mode, perform the following steps:
•
Press the button
the light blue symbol
mode will be activated;
if the heating mode is active, the display will appear as shown in the
figure on the right;
To deactivate the SAVE mode:
Press the button
Press the button
AUTO and SAVE functions as shown in the scheme:
NOTE
on the room-thermostat once (1):
SAVE
, or the button
SAVE
on the thermostat twice (1):
SAVE
will appear on the display and the
once, or the button
SAVE
AUTO
more than once and scroll through the
SAVE
and the
.
17
AUTO
MENU TIMER
SAVE
Room temperature mode
Flow temperature mode
AUTO
MENU TIMER
SAVE
Room temperature mode
Flow temperature mode
OFF