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8 Configuration
Leaving water temperature: Modulation
Only applicable in case of room thermostat control. When using the
room thermostat functionality, the customer needs to set the desired
room temperature. The unit will supply hot water to the heat emitters
and the room will be heated. Additionally, also the desired leaving
water temperature must be configured: when turning on the
modulation, the desired leaving water temperature will be calculated
automatically by the unit (based on the preset temperatures, if
weather-dependent is selected, modulation will be done based on
the desired weather-dependent temperatures); when turning off the
modulation, you can set the desired leaving water temperature on
the user interface. Moreover, with the modulation turned on, the
desired leaving water temperature is lowered or raised in function of
the desired room temperature and the difference between the actual
and the desired room temperature. This results in:
▪ stable
room
temperatures
temperature (higher comfort level)
▪ less On/OFF cycles (lower noise level, higher comfort and higher
efficiency)
▪ water temperatures as low as possible to match the desired
temperature (higher efficiency)
#
Code
[A.3.1.1.5]
[8-05]
Modulated LWT:
▪ No (default): disabled.
Note: The desired leaving water
temperature needs to be set on the
user interface.
▪ Yes: enabled
Note: The desired leaving water
temperature can only be read out on
the user interface
Leaving water temperature: Emitter type
Only applicable in case of room thermostat control. 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 during the heat up/cool
down cycle.
Note: The setting of the emitter type will influence the maximum
modulation of the desired leaving water temperature and the
possibility for usage of the automatic cooling/heating changeover
based on the indoor ambient temperature.
Therefore it is important to set this correctly.
#
Code
[A.3.1.1.7]
[9-0B]
Emitter type:
Reaction time of the system:
▪ Quick Example: Small water volume
and fan coils.
▪ Slow Example: Large water volume,
floor heating loops.
8.2.6
Domestic hot water control
Only applicable in case an optional domestic hot water tank is
installed.
Configuring the desired tank temperature
The domestic hot water can be prepared in 3 different ways. They
differ from each other by the way the desired tank temperature is set
and how the unit acts upon it.
Installer reference guide
42
exactly
matching
the
desired
Description
Description
#
Code
[A.4.1]
[6-0D]
Domestic hot water Setpoint mode:
▪ 0 (Reheat only): Only reheat operation
is allowed.
▪ 1 (Reheat + sched.): The domestic hot
water tank is heated according to a
schedule and 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.
See "8.3.2 Domestic hot water control: advanced for more details"
on page 46.
INFORMATION
It is recommended NOT to use the selection of ([6‑0D]=0,
[A.4.1] Domestic hot water Setpoint mode=Reheat only) in
case of a domestic hot water tank without internal booster
heater.
The risk of space heating (cooling) capacity shortage/
comfort problems is significant (in case of frequent
domestic hot water operation, frequent and long space
heating/cooling interruption will happen).
Readout the desired tank temperature
The desired tank temperature is displayed on the user interface. By
the following settings, you can configure the way the tank
temperature is displayed:
▪ by its numerical value
▪ by an equivalent.
Use the numerical value in case the understanding of tank
temperature is clear for the customer. On the user interface the
customer can set the desired tank temperature by 1°C. For
customers with less feeling about tank temperatures, choose display
by equivalent number of people. They will set the desired tank
temperature by indicating their domestic hot water consumption as a
number of people.
As installer, you configure the conversion between the equivalent
domestic hot water consumption per person at 1 heat-up cycle and
the real desired tank temperature. Please take into account the
installed tank size. Additionally, using the graphical display, the
customer is made aware about the amount of consumed domestic
hot water.
#
Code
[A.4.3.1]
N/A
How has the tank temperature to be
displayed on the user interface?
▪ As temperature.
▪ As graphic: The temperature has to
displayed as available hot water for
x persons. If you choose this, you also
have
equals which temperature under [A.
4.3.2.1]~[A.4.3.2.6]:
[A.4.3.2.1]
N/A
1 person
The absolute desired tank temperature
for 1 person. 30~80°C (default: 42°C)
ERHQ011~016BA + ERLQ011~016CA + EHVH/X16S18+26CA
Description
Description
to
configure
which
number
Daikin Altherma - Low Temperature Split
4P313777-1C – 2012.11
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