8 Configuration
Installer reference guide
53
ERLQ004~0 EHVH/X04+0 EHVH/X08S26CA
Daikin Altherma - Low Temperature Split
4P313775-1C – 2012.11
#
Code
Description
[A.3.1.2.2.3] [9-07]
Minimum temp (cooling)
5~18°C (default: 5°C)
Leaving water temperature overshoot temperature
This function defines how much the water temperature may rise
above the desired leaving water temperature before the compressor
stops. The compressor will startup again when the leaving water
temperature drops below the desired leaving water temperature.
This function is only applicable in heating mode.
#
Code
Description
N/A
[9-04]
1~4°C (default: 1°C)
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, this compensation can be selected
(see illustration below). Use this setting to compensate for possible
heat losses of the building when the outdoor temperature is around
0°C (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]
1~5°C (default: 3°C)
Weather dependent cooling allowance
Only applicable for EHBX and EHVX. It is possible to disable
weather dependent cooling, meaning the desired leaving water
temperature in cooling operation doesn’t 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.
#
Code
Description
N/A
[1-04]
Weather dependent cooling of the main
leaving water temperature zone is…
0 (disabled) (default)
1 (enabled)
N/A
[1-05]
Weather dependent cooling of the
additional leaving water temperature
zone is…
0 (disabled) (default)
1 (enabled)
Temperature ranges (room temperature)
Only applicable in room thermostat control. In order to save energy
by preventing overheating or undercooling the room, you can limit
the range of the room temperature, both for heating and/or cooling.
NOTICE
When adjusting the room temperature ranges, all desired
room temperatures are also adjusted to guarantee they are
between the limits.
#
Code
Description
Room temp. range
[A.3.2.1.2]
[3-06]
Maximum temp (heating)
18~30°C (default: 30°C)
[A.3.2.1.1]
[3-07]
Minimum temp (heating)
12~18°C (default: 12°C)
[A.3.2.1.4]
[3-08]
Maximum temp (cooling)
25~35°C (default: 35°C)
[A.3.2.1.3]
[3-09]
Minimum temp (cooling)
15~25°C (default: 15°C)
Room temperature step
Only applicable in room thermostat control and when the
temperature is displayed in °C.
#
Code
Description
[A.3.2.4]
N/A
Room temp. step
▪ 1°C (default). The desired room
temperature on the user interface is
settable per 1°C.
▪ 0.5°C The desired room temperature
on the user interface is settable per
0.5°C. The actual room temperature is
displayed with an accuracy of 0.1°C.
Room temperature hysteresis
Only applicable in case of room thermostat control. The hysteresis
band around the desired room temperature is settable. Daikin
advises NOT to change the room temperature hysteresis as it is set
for an optimal use of the system.
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