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4 Description of the product
194
ETWH
The thermodynamic water heater can heat the water using the following
sources of energy: heat pump or immersion heater:
the heat pump operates as the priority source,
the immersion heater starts when the heat pump is operating, to enable
the required temperature set point to be reached before the end of the
period.
Tab.36
T = Ambient temperature
T < +3 °C
Water temperature > variable
temperature set point according
to the outdoor temperature
T > +43 °C
+3°C < T < 43°C
4.2.3
Operating principle for the anti-legionella function
If the anti-legionella function is activated after the water heater is switched
on, the control system confirms this mode at 23h00 the following day.
This function is then automatically activated once a week, at 23h00 on the
7th day.
For example: if the anti-legionella function is activated on 1 February at
09h00, the unit confirms anti-legionella mode on 2 February at 23h00 and
then again on 9 February at 23h00, and so on.
Important
If the appliance is in ECONOMY MODE mode and the anti-
legionella function temperature is set to 70°C, the heat pump will
heat the water up to 65°C and will then shut down. The immersion
heater will take over to heat the water up to 70°C.
Important
The anti-legionella icon is displayed on the screen during this
process. The anti-legionella function shuts down when the
domestic hot water temperature reaches 65°C (or 70°C) and the
anti-legionella icon goes off.
Source(s) of energy used
Immersion heater
Heat pump and immersion heater
operating simultaneously if neces
sary
7659610 - v04 - 27072020
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