Atlantic alfea extensa duo+ - Temperature Control and Settings

3.3 Temperature control
The heat pump's operation is subject to the temperature
control.
The set temperature for the water in the heating circuit
is adjusted according to the outdoor temperature.
If there are thermostatic valves on the installation, these
must be fully open or adjusted for higher than the normal
set temperature.
3.3.1 Set to
During installation, the temperature control must be
parametered according to the heat emitters and the
dwelling's insulation.
The temperature control' curves ( gure 40) refer to an
ambient setting of 20°C.
The slope of the temperature control (parameter 720)
determines the impact of the variations in the outdoor
temperature on the initial heating temperature variations.
The higher the slope, the more a slight reduction in the
outdoor temperature causes a signi cant increase in
the  ow water temperature in the heating circuit.
The off-set in the temperature control (parameter 721)
modi es the initial temperature of all the curves, without
modi cation of the slope ( gure 41).
The corrective actions in the case of any inconvenience
are detailed in the table ( gure 42).
3.2 Description of the display
Symbols De nitions
- Heating mode active with reference
to the heating circuit.
- Heating in comfort mode.
- Heating in reduced mode.
- Heating in "standby" mode
(freeze protection).
- Cooling mode active.
- Holiday mode activated.
- Process in progress.
- Compressor operation.
- Burner operation.
- Default message.
- Service / Special operation.
INFO
- Information level activated.
PROG
- Programme activated.
ECO
- ECO mode activated
(Heating temporarily stopped).
temperature ambiante
- Hour /
Parameter number /
Setpoint value.
temperature ambiante
- Room temperature /
Setpoint value.
temperature ambiante
- Setpoint information /
Parameter Information.
 gure 38 - User interface display
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 gure 39 - Closing the display
Installation and operating manual "1578 - EN"
Heat Pump alféa extensa duo +
- 38 -