5 Configuration
Installation manual
16
EHVH/X04~1 EHVH/X08~16S26CB
Daikin Altherma – Low temperature split
4P384971-1E – 2018.02
#
Code
Description
[7.7.2.1]
[0-00]
[0-01]
[0-02]
[0-03]
Weather-dependent curve (heating):
[0-00]
[0-01]
Ta
Tt
[0-03]
[0-02]
▪ T
t
: Target leaving water temperature
(additional)
▪ T
a
: Outdoor temperature
[7.7.2.2]
[0-04]
[0-05]
[0-06]
[0-07]
Weather-dependent curve (cooling):
[0-04]
[0-05]
Ta
Tt
[0-07]
[0-06]
▪ T
t
: Target leaving water temperature
(additional)
▪ T
a
: Outdoor temperature
Leaving water temperature: Delta T source
#
Code
Description
[A.3.1.3.1]
[9-09]
Heating: required temperature
difference between entering and
leaving water.
In case a minimum temperature
difference is required for the good
operation of the heat emitters in heating
mode.
[A.3.1.3.2]
[9-0A]
Cooling: required temperature
difference between entering and
leaving water.
In case a minimum temperature
difference is required for the good
operation of the heat emitters in cooling
mode.
Leaving water temperature: Modulation
#
Code
Description
[A.3.1.1.5]
[8-05]
Leaving water temperature modulation:
▪ 0 (No): Disabled
▪ 1 (Yes): Enabled. The leaving water
temperature is calculated according
to the difference between desired
and actual room temperature.
This allows better matching of the
heat
pump
capacity
to
actual
required capacity and results in less
start/stop cycles of the heat pump
and more economic operation.
#
Code
Description
N/A
[8-06]
Leaving water temperature maximum
modulation:
0°C~10°C (default: 3°C)
Requires modulation to be enabled.
This is the value by which the desired
leaving water temperature is increased
or lowered.
INFORMATION
When leaving water temperature modulation is enabled,
the weather‑dependent curve needs to be set to a higher
position than [8-06] plus the minimum leaving water
temperature setpoint required to reach a stable condition
on the comfort setpoint for the room. To increase
efficiency, modulation can lower the leaving water setpoint.
By setting the weather‑dependent curve to a higher
position, it cannot drop below the minimum setpoint. Refer
to the illustration below.
a
+[8-06]
−[8-06]
b
Ta
Tt
a
Weather-dependent curve
b
Minimum leaving water temperature setpoint required to
reach a stable condition on the comfort setpoint for the
room.
Leaving water temperature: Emitter type
#
Code
Description
[A.3.1.1.7]
[9-0B]
Reaction time of the system:
▪ 0: Quick.
Example:
Small water
volume and fan coils.
▪ 1: Slow.
Example:
Large water
volume, floor heating loops.
Depending on the system water volume
and the heat emitters type, the heat up
or cool down of a space can take
longer. This setting can compensate for
a slow or a quick heating/cooling
system by adjusting the unit capacity
during the heat up/cool down cycle.
5.2.6
Domestic hot water control
#
Code
Description
[A.4.1]
[6-0D]
Domestic hot water Type:
▪ 0 (Reheat only): Only reheat operation
is allowed.
▪ 1 (Reheat + sched.): Same as 2, but
between the scheduled heatup cycles,
reheat operation is allowed.
▪ 2 (Scheduled only): The domestic hot
water tank can ONLY be heated
according to a schedule.
[A.4.5]
[6-0E]
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.
