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Configuration
Installer reference guide
217
ERRA08~12E + ELVH/23E
Daikin Altherma 3 R MT F
4P708474-1 – 2023.05
Keep hot function
In case of a long time with small or no domestic hot water consumption the tank
energy levels can drop lower than the required value for comfort. The keep-hot-
function prevents the tank temperature from dropping too much after small
domestic hot water consumption or no domestic hot water consumption before
the tank is heated up again. This can result in the tank heating up sooner (reheat
temperature minus keep-hot hysteresis [6-05]) instead of reheat temperature
minus the heat pump ON hysteresis [6-00] temperature.
#
Code
Description
[9.I]
[7-08]
Activation of the keep hot function:
▪
0: Deactivated
▪
1: Activated
When the keep-hot-function is enabled then the reheat of the tank could be
sooner.
Hysteresis (reheat hysteresis)
Applicable when domestic hot water preparation is screheat. When the
tank temperature drops below the reheat temperature minus the reheat hysteresis
temperature, the tank heats up to the reheat temperature.
#
Code
Description
[5.A]
[6-08]
Reheat hysteresis
▪
2°C~20°C
Setpoint mode
#
Code
Description
[5.B]
N/A
Setpoint mode
:
▪
Fixed
▪
Weather dependent
WD curve
When weather-dependent operation is active the desired tank temperature is
determined automatically depending on the averaged outdoor temperature: low
outdoor temperatures will result in higher desired tank temperatures as the cold
water tap is colder and vice versa.
In case of
Schedule only
or
Schedule + reheat
domestic hot water
preparation, the storage comfort temperature is weather-dependent (according to
the weather-dependent curve), the storage economic and reheat temperature are
NOT weather-dependent.
In case of
Reheat only
domestic hot water preparation, the desired tank
temperature is weather-dependent (according to the weather-dependent curve).
During weather-dependent operation, the end-user cannot adjust the desired tank
temperature on the user interface. Also see
176].
