Parameter Description; Thermal Disinfection (Legionella Protection) - Daikin EKHHP300A2V3 Manuel D'installation Et D'utilisation

5 x Operation, Parameters
Changes to parameters are only saved if the
key is pressed. Changing to a new parameter code
or pressing the

5.5.2 Parameter description

[0] - Temperature settings operating modes
The following setting options are available:
– [0-00] Hot water set temperature for the operating mode "High
Output".
– [0-01] Hot water set temperature for the thermal disinfection
of the hot water storage tank (Legionella protection).
WARNING!
The settings of the Legionella protection must
always be configured in accordance with the coun-
try-specific laws.
If no hot water is used for several days and the
storage temperature of the DAIKIN Hot water heat
pump does not reach at least 60°C, for hygiene
reasons (Legionella protection) it is periodically
heated up to above 60°C once.
– [0-02] Set value heat retention function. This set value is
taken up as soon as the DAIKIN Hot water heat pump is in an
"OFF" period and serves to maintain a minimum storage tank
temperature. The DAIKIN Hot water heat pump starts as soon
as the water temperature in the storage tank has fallen below
the temperature hysteresis (depending on the operating
mode and setting).
– [0-03] Switch-off temperature heat retention function: Tem-
perature at which the DAIKIN Hot water heat pump stops the
reheating procedure.
– [0-04] Activation temperature heat retention function: Deter-
mines whether automatic reheating takes place if the temper-
ature falls below the parameter value [0-02].
– 0 = Function is switched off
– 1 = Function is switched on

[2] - Thermal disinfection (Legionella protection)

An ON temperature > 45°C makes sure that only the
electrical Booster Heater (BOH) is used and not the
heat pump. This increases the usage duration of the
refrigerant compressor.
The following setting options are available:
– [2-00] Start day: Day of the week on which the function should
be started.
– [2-01] Automatic disinfection with switched on Hot water heat
pump:
– 0 = No disinfection
– 1 = Automatic disinfection
– [2-02] Starting time: Time of day at which the function should
be started.
– [2-03] Automatic disinfection in "Stand-by Mode":
– 0 = No disinfection
– 1 = Automatic disinfection
– [2-04] Holding time: Length of time the disinfection tempera-
ture must be maintained.
Installation and maintenance manual
24
key rejects the changes made.
If the temperature in the storage tank falls because of a
draw-off, the thermal disinfection will be restarted.
If the thermal disinfection is prevented, e.g. by the high-
tariff signal (Booster Heater (BOH) blocked), this is
carried out as soon as the DAIKIN Hot water heat pump
is in the normal mode again (see tab. 5-3).
[3] - Other points
The following setting options are available:
– [3-00] Automatic restart after a power failure:
– 0 = DAIKIN Hot water heat pump starts in "Stand-by"
mode. The timer function is not active.
– 1 = DAIKIN Hot water heat pump restarts with the previ-
ously stipulated user settings.
If the DAIKIN Hot water heat pump is connected to
a low tariff mains connection, where the power sup-
ply is interrupted, this parameter must be set to "1".
– [3-01] Access authorisation: Do not change the set value.
– [3-02] Hot water set temperature > 60°C:
– 0 = Setting > 60°C not possible.
– 1 = Setting > 60°C possible.
The maximum hot water set temperature is limited
to 55°C when working exclusively with a heat pump.
A hot water set temperature >55°C is only possible
when using an electrical Booster Heater (BOH).
[4] - Operation of electrical Booster Heater (BOH
The following setting options are available:
– [4-03] Simultaneous operation of the electrical Booster Heat-
ers (BOH) and the heat pump.
– 0 = Not possible.
– 1 = Is possible only when in operating mode "Low Noise".
– 2 = Is possible only when in operating mode "High Out-
put".
– 3 = Is possible when in operating mode "Low Noise" and
operating mode "High Output".
[6] - Hysteresis for hot water heating
These parameter settings determine the temperature thresholds
at which heating the hot water is started and stopped by the heat
pump (ON temperature and OFF temperature of the heat pump).
If the water temperature falls below the ON temperature of the
heat pump (T ), heating the hot water with the heat pump is
HP ON
started.
As soon as the hot water temperature reaches the OFF temper-
ature of the heat pump (T
HP OFF
(T ), the heating of the hot water by the heat pump is stopped.
U
The following setting options are available:
– [6-00] Start: Temperature difference (switching hysteresis)
that determines the ON temperature of the heat pump
(T ). The set value is only evaluated in the "ECO" oper-
HP ON
ating mode.
) or the hot water set temperature
DAIKIN EKHHP(3/5)00AA2V3
DAIKIN Hot water heat pump
008.1423444_02 – 09/2015