Daikin EKHBRD011AAV1 Installation Manual page 25

[8] Option setup
[8-00] Remote controller temperature control
When using the remote control delivered with the unit, 2 types of
temperature control are possible. Default [8-00] = 1 which
means that the remote controller is used as room thermostat, so
the remote controller can be placed in the living room to control
the room temperature. Set [8-00] to 0 to use the unit in leaving
water temperature control.
[8-01] Auto restart
When a power failure occurred and the power returns to the unit,
the system will automatically restore it's settings and restart.
This is the default setting [8-01] = 1. To disable this auto restart
function, set [8-01] to 0.
NOTE When power returns after a power supply failure, the
auto restart function reapplies the remote controller
settings at the time of the power supply failure. It is
therefore recommended to leave the auto restart
function enabled. Note that with the function disabled
the schedule timer will not be activated when power
returns to the unit after a power supply failure. Press
the pr button to enable the schedule timer again.
[8-03] Quiet mode
The unit has a quiet mode functionality for which 3 levels can be
selected:
[8-03] = 1 low noise level 1 (default)
[8-03] = 2 low noise level 2
[8-03] = 3 low noise level 3
Activating this quiet mode is done by pushing the QUIET MODE
button on the remote controller or through the schedule timer.
[8-04] Freeze-up prevention
The unit has a freeze-up prevention functionality for which 3
levels can be selected:
[8-04] = 0 prevention level 0 (default: no prevention)
[8-04] = 1 prevention level 1
[8-04] = 2 prevention level 2
The freeze-up prevention is only active when the unit is in
thermo OFF condition. If prevention level 1 is enabled, the
freeze-up prevention will start if the outdoor ambient
temperature <4°C and if leaving or return water temperature
<7°C. For prevention level 2, the freeze-up prevention will start
as soon as the ambient temperature <4°C.
For both cases the pump will operate and if leaving or return
water <5°C for 5 minutes the unit will start up to prevent too low
temperatures.
It is advised to enable freeze-up prevention if the indoor unit is
located in a colder ambient room (e.g. garage, ...) to prevent
water freeze-up.
[9] Automatic temperature compensation
If needed, it is possible to adjust some thermistor value of the unit by
a correction value. This can be used as countermeasure for
thermistor tolerances or capacity shortage.
The compensated temperature (= measured temperature plus
compensation value) is then used for controlling the system and will
be displayed in the temperature read-out mode.
[9-00] Leaving water temperature compensation value
[9-01] Domestic hot water tank compensation value
EKHBRD011~016AAV1+Y1
Indoor unit for air to water heat pump system
4PW54465-1A
[9-02] Tthermo ON/OFF admission
By changing this value the operation range for space heating
operation can be modified.
If the ambient temperature becomes higher than (24°C + the
value of [9-02]) no space heating is possible.
Space heating can be requested as long as the ambient
temperature is lower than (20°C + the value of [9-02]).
Example: [9-02] = –2°C
T
A No space heating operation possible
B Request for space heating possible
C Hysteresis area
T Ambient temperature
[A] Option setup
[A-02] Temperature difference for leaving and returning water
The unit is designed to support radiator operation. The advised
leaving water temperature (set by the remote controller) for
radiators is 65°C. In such a case the unit will be controlled to
realize a temperature difference (∆T) of 10°C, which means that
the returning water to the unit is around 55°C.
Depending on the installed application (radiators, fan coil
units, ...) or situation, it can be required to change the ∆T. This
can be done by changing field setting [A-02].
[A-03] See chapter "Multiple set point control" on page
[A-04] See chapter "Multiple set point control" on page 26
[b] Domestic hot water set points
The reheat mode will prevent the domestic hot water from cooling
down lower than a certain temperature. When enabled the indoor unit
will deliver hot water to the domestic hot water tank if the reheat
minimum value is reached. The domestic water heating will continue
until the reheat maximum temperature is reached. In this way always
a minimum of domestic hot water is available.
[b-00] Set point: reheat minimum temperature (see figure
below).
[b-01] Set point: reheat maximum temperature (see figure
below).
T
A B
D
E
F
G
A Storage operation (if activated)
B Reheat operation (if activated)
C Disinfection operation (if activated)
Field settings
D Disinfection operation temperature [5-00] (e.g. 70°C)
E Hot water storage temperature [b-03] (e.g. 60°C)
F Reheat maximum water temperature [b-01] (e.g. 45°C)
G Reheat minimum water temperature [b-00] (e.g. 35°C)
t Time
T Domestic hot water tank temperature
A
24°C–2°C = 22°C
C C
20°C–2°C = 18°C
B
C
t
Installation manual
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