Daikin Altherma 3 GEO Series Installer's Reference Manual page 75

Maximum DHW temperature setpoint
The maximum temperature that users can select for the domestic
hot water. You can use this setting to limit the temperatures at the
hot water taps.
INFORMATION
During disinfection of the domestic hot water tank, the
DHW temperature can exceed this maximum temperature.
INFORMATION
Limit the maximum hot water temperature according to the
applicable legislation.
# Code
[5.8] [6-0E] Maximum
The maximum temperature that users
can select for the domestic hot water.
You can use this setting to limit the
temperature at the hot water taps.
The maximum temperature is NOT
applicable during disinfection function.
See disinfection function.
Hysteresis
The following ON hysteresis can be set.
Heat pump ON hysteresis
Applicable when domestic hot water preparation is reheat only.
When the tank temperature drops below the reheat temperature
minus the heat pump ON hysteresis temperature, the tank heats up
to the reheat temperature.
To avoid too much backup heater operation, the reheat temperature
minus the heat pump ON hysteresis temperature must be below
45°C.
# Code
[5.9] [6-00] Heat pump ON hysteresis
▪ 2°C~40°C
Reheat hysteresis
Applicable when domestic hot water preparation is scheduled
+reheat. When the tank temperature drops below the reheat
temperature minus the reheat hysteresis temperature, the tank heats
up to the reheat temperature.
# Code
[5.A] [6-08] Reheat hysteresis
▪ 2°C~20°C
Setpoint mode
# Code
[5.B] N/A Setpoint mode:
▪ Fixed
▪ Weather dependent
WD curve type
The weather dependent curve can be set using the 2-points
method or the Slope-Offset method. For more information about
each method, see "10.4.2 2-points curve"
curve" [ 4 61]. The curve type in the menu is read only, and will
offset
correspond to the curve type set for the main zone. Changing the
curve type for the additional zone must be done in the main zone WD
curve type [2.E] menu. See
information.
# Code
[5.E] N/A ▪ 0: 2-points
▪ 1: Slope-Offset
EGSAH/X06+10DA9W(G)
Daikin Altherma 3 GEO
4P569820-1A – 2019.09
Description
Description
Description
Description
[ 4 61] and
"10.4.3 Slope-
[ 4 64] for more
"10.5.3 Main zone"
Description
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 "10.4.2 2-points
curve" [ 4 61].
offset
# Code
[5.C] [0-0E] WD curve
[0-0D]
Note: There are 2 methods to set the
weather dependent curve. See
[0-0C]
points
[0-0B]
offset
about the different curve types. Both
curve types require 4 field settings to be
configured according to the figure below.
T
[0-0C]
[0-0B]
▪ T
DHW
▪ T : The (averaged) outdoor ambient
a
temperature
▪ [0-0E]:
temperature: –40°C~5°C
▪ [0-0D]:
temperature: 10°C~25°C
▪ [0-0C]: desired tank temperature when
the outdoor temperature equals or
drops
temperature: 45°C~[6‑0E]°C
▪ [0-0B]: desired tank temperature when
the outdoor temperature equals or
rises
temperature: 35°C~[6‑0E]°C
Margin
In domestic hot water operation, the following hysteresis value can
be set for the heat pump operation:
# Code
[5.D] [6-01] The temperature difference determining
the heat pump OFF temperature.
Range: 0°C~10°C
Example: setpoint (T )>maximum heat pump temperature–[6‑01]
U
(T –[6‑01])
HP MAX
10 Configuration
curve" [ 4 61] and
"10.4.3 Slope-
Description
"10.4.2 2-
curve" [ 4 61] and
"10.4.3 Slope-
curve" [ 4 61] for more information
DHW
T
a
[0-0E] [0-0D]
: The desired tank temperature.
low outdoor ambient
high outdoor ambient
below the low ambient
above the high ambient
Description
Installer reference guide
75