117
cod. 3541T620 - Rev. 05 - 04/2022
EN
DORA
90 LT - 120 LT
mode is not operating and the unit works in the set mode: ECO,
AUTOMATIC or HOLIDAY.
When the symbol
on the display is lit up, the energy pro-
duced by the photovoltaic system is used to heat the water
inside the tank.
With ECO mode selected, the heat pump will operate until the
set-point is reached and the heating element is switched on
until the photovoltaic set-point set from the installer menu is
reached.
Otherwise, with AUTOMATIC mode selected, the heating ele-
ment can also be switched on before reaching the set-point of
this mode if the conditions require it.
2.10.2
Off-Peak Mode
+
or
+
+
When the photovoltaic mode is activated from the installer
menu, only ECO - AUTOMATIC will be available.
When the symbol
on the display flashes, the Off-Peak
mode is not operating and the unit remains on standby and the
heat pump and heating element are off.
Otherwise, when the symbol
on the display is lit up, the
unit works in the ECO or AUTOMATIC mode.
2.10.3 Anti-Legionella
The display shows the symbol
.
Every two weeks, at the set time, a water heating cycle is car-
ried out by means of the heating element inside the tank, up to
the anti-legionella temperature, maintaining it for the set time.
If, on reaching the anti-legionella temperature, the cycle is not
performed correctly within 10 hours, it is stopped and will be
run again after 2 weeks.
If the request for the anti-legionella function occurs with HOLI-
DAY mode selected, the anti-legionella cycle will be carried out
immediately when the unit is reactivated after the set days of
absence.
Anti-legionella parameters
Range
Default
Anti-legionella temperature set-point (P3)
50÷75°C
75°C
Anti-legionella cycle duration (P4)
0÷90 min
30 min
Anti-legionella cycle activation time (P29)
0÷23 h
23 h
2.10.4 Defrost function
The display shows the symbol
.
This device has an automatic evaporator defrost function which
is activated, when the operating conditions require it, during
heat pump operation.
Defrosting occurs through the injection of hot gas into the
evaporator, allowing it to be rapidly defrosted.
During defrosting, the heating element, which the equipment
is provided with, is switched off unless otherwise set via the
installer menu (parameter P6).
The max. duration of defrosting is 8 minutes.
2.10.4.1 Frost protection
The display shows the symbol
.
This protection prevents the water temperature inside the tank
from reaching values close to zero.
With the equipment in standby mode, when the water tem-
perature inside the tank is below or equal to 5°C (parameter
configurable via installer menu), the frost protection function
activates, which switches on the heating element until 12°C is
reached (parameter configurable via installer menu).
2.11
CONTROL OF THE DEVICE VIA APP
This water heater has a Wi-Fi module integrated in the product
which enables it to be connected to an external Wi-Fi router
(not supplied) and therefore to be controlled via a smartphone
APP.
Depending on the availability of a smartphone with Android
®
or
iOS
®
operating system, via the dedicated app.
Download and install the App
"DORA Smart"
Start the
"DORA Smart"
app from your smartphone by press-
ing the icon as indicated above.