DORA TECH
90 LT - 120 LT
cod. 3540000800 - Rev. 02 - 09/2023
70
EN
2.5.3 Standby
In standby mode, the wording Stb is shown on the display.
In this mode, the heat pump is off, but all the auxiliary functions
(photovoltaic, smart grid, solar thermal, anti-legionella) and the
antifreeze function remain active (if previously enabled).
2.5.4 OFF
In off mode, the wording Off is shown on the display.
In this mode, the heat pump is completely off: only the antifre-
eze function remains active.
2.6 OPERATING MODE
With the water heater on (see “2.5.1 on page 69) the fol-
lowing modes are available:
• ECO;
• BOOSTER;
• ELECTRIC;
• VENTILATION;
• AUTO.
To select the desired mode, press the “SET” key for 3 secon-
ds (a short confirmation beep will be heard) and then release.
2.6.1 ECO
The “HP”
symbol appears on the display.
With this mode, only the heat pump is used within the product’s
operating limits to guarantee the maximum possible energy sa-
vings.
The heat pump is switched on 5 minutes after selecting this
mode or since it was last switched off.
In case of shutdown, within the first 5 minutes, the heat pump
will still remain on to ensure at least 5 minutes of continuous
operation.
2.6.2 BOOSTER
The “HP”
+ “HEATER“ symbols flash on the display.
This mode uses the heat pump and the electrical heater, within
the operating limits of the product, to ensure faster heating.
The heat pump is switched on 5 minutes after selecting this
mode or since it was last switched off.
In case of shutdown, within the first 5 minutes, the heat pump
will still remain on to ensure at least 5 minutes of continuous
operation.
The electric heater is switched on immediately.
2.6.3 ELECTRIC
The “ELECTRIC“ symbol appears on the display.
With this mode, only the electrical heater is used within the
product’s operating limits and is useful in situations with low
inlet air temperatures.
2.6.4 VENTILATION
FAn ” is shown on the display
.
With this mode only the fan inside the appliance is used and
it is useful if you want to recirculate the air in the installation
environment.
The fan will be regulated at the speed defined by parameters
F02 and F03. (“2.8.4 FAn Menu - FAN AND SILENT MODE
2.6.5 AUTO
“HP ”
+ “HEATER“ symbol appears on the display
. This mode uses the heat pump and, if necessary, also the
electrical heater, within the operating limits of the product, to
guarantee the best possible comfort.
The heat pump is switched on 5 minutes after selecting this
mode or since it was last switched off.
In case of shutdown, within the first 5 minutes, the heat pump
will still remain on to ensure at least 5 minutes of continuous
operation.
2.7
SETTING THE HOT WATER SET-POINT
It is possible to adjust the hot water set-point in ECO, AUTO,
BOOSTER and ELECTRIC modes by pressing the “+” and “-”
keys. Press the “SET” key for at least 3 seconds or the
“ON/OFF”
key to exit without saving.
Mode
Hot water set-point
Range
Default
ECO
38÷62°C
55°C
AUTO
38÷62°C
55°C
BOOSTER
38÷75°C*
55°C
ELECTRIC
38÷75°C
55°C
* In BOOSTER mode the maximum set-point value for the heat
pump is 62°C. Therefore, setting a higher value this is to be con-
sidered only for the electrical heater.
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