Daikin Altherma 3 M - Page 182

11 | Configuration
Installer reference guide
182
EBLA09~16DA + EDLA09~16DA
Daikin Altherma 3 M
4P620241-1 – 2020.06
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 "11.5 Weather-dependent
curve"[4144].
# Code Description
[5.C] [0-0E]
[0-0D]
[0-0C]
[0-0B]
WD curve:
Note: There are 2 methods to set the weather
dependent curve. See "2-points curve"[4144]
and "Slope-offset curve"[4145] for more
information about the different curve types. Both
curve types require 4 field settings to be
configured according to the figure below.
T
DHW
T
a
[0-0C]
[0-0B]
[0-0E] [0-0D]
▪ T
DHW
: The desired tank temperature.
▪ T
a
: The (averaged) outdoor ambient
temperature
▪ [0-0E]: low outdoor ambient temperature: –
40°C~5°C
▪ [0-0D]: high outdoor ambient temperature:
10°C~25°C
▪ [0-0C]: desired tank temperature when the
outdoor temperature equals or drops below
the low ambient temperature: 45°C~[6‑0E]°C
▪ [0-0B]: desired tank temperature when the
outdoor temperature equals or rises above the
high ambient temperature: 35°C~[6‑0E]°C
Margin
In domestic hot water operation, the following hysteresis value can be set for the
heat pump operation: