Reheat; Disinfection Operation; Emergency Operation - Daikin EKHBRD014AAV1 Operation Manual

The storage temperature set point is a field setting. Refer to the
chapter "Field settings" on page 15
set one or more field settings.
[b-03] Set point: storage temperature (see figure
water heating modes" on page
[b-02] Status: defines whether the weather dependent domestic
water heating is turned ON (1) or OFF (0).
If enabled, the storage set point will be set weather dependent.
In case of a higher ambient temperature (e.g. during summer-
time), temperature of supply water to the domestic hot water
tank will be higher too, so that storage temperature set point can
be set lower in order to keep the overall equivalent hot water
amount the same during the whole year. Therefor it is
recommended to use this function.
T
70°C
55°C
15°C
A Ambient temperature
T Domestic hot water storage temperature
NOTE The temperatures for weather dependent domestic
water heating (see figure) are fixed and can not be
changed.
Manual storage is deactivated automatically when the set point for
the domestic hot water storage temperature is reached. It can also be
stopped at any time by pushing the w button.
NOTE If weather dependent domestic water heating is
enabled [b-02], the storage temperature will be set
automatically and the field setting [b-03] will be of no
importance.

Reheat

This 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 when the reheat
minimum value is reached. The domestic water heating will continue
until the reheat maximum temperature is reached.
Selecting reheat operation for domestic water heating
Use the w button to enable reheat operation.
1
The w icon will display.
Remark that the w icon will be continuously lit as
NOTE
long as the reheat function is enabled. It is not
possible to see when the indoor unit is reheating
the domestic hot water tank.
Press the w button again to disable reheat operation.
2
The w icon disappears.
The reheat minimum and reheat maximum temperature set points
are field settings. Refer to the chapter
a detailed description how to set one or more field settings.
[b-00] Set point: reheat minimum temperature (see figure
"Domestic water heating modes" on page
[b-01] Set point: reheat maximum temperature (see figure
"Domestic water heating modes" on page
Remark that pushing the y button has no influence
NOTE
on the domestic water heating. Domestic water
heating is only switched on or off by means of the w
button and/or disabling the storage schedule timer.
EKHBRD011~016AAV1+Y1
Indoor unit for air to water heat pump system and options
4PW54466-1C
for a detailed description how to
"Domestic
6).
A
25°C
"Field settings" on page 15
6).
6).

Disinfection operation

This mode will disinfect the domestic hot water tank by periodically
heating the domestic water to a specific temperature. During the
operation of this mode the w icon will be blinking rapidly with 0.5
second intervals.
Remark that the w icon will only be blinking during
NOTE
effective operation.
During the operation it is always possible to cancel the
disinfection function by pushing the w button once.
Be aware that after pushing the w button, it is possible
that the permanently lit w icon still displays, meaning
that the reheat function is enabled.
NOTE If a domestic hot water tank is installed, the disinfection
function is enabled by default.
The disinfection temperature set point is a field setting as are the
retention time, day and hour. Refer to the chapter
page 15 for a detailed description how to set one or more field
settings.
[4-00] Status: defines whether the disinfection function is turned
ON (1) or OFF (0).
[4-01] Operation interval: day of the week at which the domestic
water should be heated.
[4-02] Start time: time at which the disinfection operation is
started.
[5-00] Set point: Disinfection water temperature to be reached
(see figure "Domestic water heating modes" on page
[5-01] Duration: time period defining how long the disinfection
set point temperature should be maintained.
Even if all schedule timers are de-activated and there is no reheat
function active, the disinfection function will operate if a domestic hot
water tank is installed and field setting [4-00] is set to ON.

Emergency operation

[8-02] Emergency operation
During emergency mode, heating is only done by the heater kit,
not by the heat pump.
Activation of emergency mode is done by changing field setting
[8-02]=1.
Activating the emergency mode will stop the heat pump
operation. The pump of the indoor unit will be started, but
heating itself is done by the heater kit. If there are no error
conditions in leaving or returning water thermistors, the heater
kit can start to follow emergency operation.
Before activating emergency operation, be sure to
NOTE
activate the heater kit. The heater will stay in
emergency mode until the field setting is set back
to default [8-02]=0.
for
"Field settings" on
6).
Operation manual
8