Daikin Altherma EHYHBH05A Series, Installer'S Reference Manual

Page: 157 / 264

10 | Configuration
Installer reference guide
157
08CA + EHY EHYHBH/X08A + EHYKOMB33AA
Daikin Altherma hybrid heat pump
4P355634-1G – 2022.09
Leaving water temperature compensation around 0°C
In heating operation, the desired leaving water temperature is locally increased
around an outdoor temperature of 0°C. This compensation can be selected when
using an absolute or a weather-dependent desired temperature (see illustration
below). Use this setting to compensate for possible heat losses of the building due
to the evaporation of melted ice or snow (e.g. in cold region countries).
T
t
T
A
R
L
0°C
T
t
T
A
R
L
0°C
a b
a Absolute desired LWT
b Weather-dependent desired LWT
# Code Description
N/A [D-03] ▪ 0 (disabled) (default)
▪ 1 (enabled) L=2°C,
R=4°C (−2°C<T
A
<2°C)
▪ 2 (enabled) L=4°C,
R=4°C (−2°C<T
A
<2°C)
▪ 3 (enabled) L=2°C,
R=8°C (−4°C<T
A
<4°C)
▪ 4 (enabled) L=4°C,
R=8°C (−4°C<T
A
<4°C)
Leaving water temperature maximum modulation
ONLY applicable in room thermostat control and when modulation is enabled. The
maximum modulation (=variance) on the desired leaving water temperature
decided on the difference between the actual and desired room temperature, e.g.
3°C modulation means the desired leaving water temperature can be increased or
lowered by 3°C. Increasing the modulation results in better performance (less On/
OFF, faster heat up), but note that depending on the heat emitter, there MUST
ALWAYS be a balance (refer to the design and selection of the heat emitters)
between the desired leaving water temperature and the desired room
temperature.
# Code Description
N/A [8-06] 0°C~10°C (default: 5°C)
Weather-dependent cooling allowance
ONLY applicable for EHYHBX. It is possible to disable weather-dependent cooling,
meaning the desired leaving water temperature in cooling operation does NOT
depend on the outdoor ambient temperature and this regardless whether
weather-dependent is selected or NOT. Both for the main leaving water
temperature zone as for the additional leaving water temperature zone, this can
be set separately.