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20 | Operation
Fig. 19 "OFF" operating mode
Frost protection
The electric booster heater starts up when the water
temperature in the cylinder falls to 5 °C and switches off again
when the temperature reaches 8 °C.
8.5 "Mode" submenu - Heating mode
3 different types of heating mode can be selected in the "Mode"
submenu.
• Electrical heating mode
• "Heat pump" operating mode
• "Combi" operating mode
Fig. 20 "Mode" function
8.5.1 Electrical heating mode
In this operating mode, the electric booster heater is the only
heat appliance used.
Fig. 21 Electrical heating mode
The water temperature can be set to between 30 °C and 70 °C.
6 720 809 134 (2013/09)
8.5.2 "Heat pump" operating mode
Selecting this operating mode means that the heat pump is the
only heat appliance used.
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Fig. 22 "Heat pump" operating mode
The water temperature can be set to between 30 °C and 60 °C.
8.5.3 "Combi" operating mode
In this operating mode, two heat appliances are used
depending on the situation: the heat pump or the electric
booster heater.
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Fig. 23 "Combi" operating mode
The water temperature can be set to between 30 °C and 70 °C.
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Water heating is only guaranteed when the
inlet air temperature is between -10 °C and
35 °C.
At very low temperatures, the frost
protection function ( page 20) is
activated.
If the water temperature in the cylinder is
below 60 °C and the inlet air temperature is
between -10 °C and 35 °C, the heat pump is
the only heat appliance used. Otherwise, the
electric booster heater is switched on.
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Compress 3000 DW FII
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