EKHBRD011~0Y17
Indoor unit for air to water heat pump system
4P402191-1B – 2017.09
Installation manual
22
[1] Automatic storage timing for domestic water heating
In this mode, the indoor unit will deliver hot water to the domestic hot
water tank based on the daily fixed pattern. This mode will continue
until storage temperature is reached.
Automatic storage is the advised domestic hot water mode. In this
mode water heats up during the night (when space heating
requirements are lower) until the storage set point. The heated water
is stored in the domestic hot water tank at a higher temperature so it
can fulfil the domestic hot water requirements throughout the day.
The storage temperature set point and timing are field settings.
■
[1-00]
Status: defines whether the domestic water heating
(storage mode) during night is enabled (1) or not (0).
■
[1-01]
Start time: time of the night at which the domestic water
should be heated.
■
[1-02]
Status: defines whether the domestic water heating
(storage mode) during daytime is enabled (1) or not (0).
■
[1-03]
Start time: time of the day at which the domestic water
should be heated.
Refer to
Domestic hot water set points" on page
for
temperature set points.
[2] Automatic setback function
Setback function provides the possibility to lower the room
temperature. The setback function can for instance be activated
during the night because the temperature demands during night and
day are not the same.
■
[2-00]
Status: defines whether the setback function is turned ON
(1) or OFF (0)
■
[2-01]
Start time: time at which setback is started
■
[2-02]
Stop time: time at which setback is stopped
Setback can be configured for both room temperature control and
leaving water temperature control.
It is advised to set the start time of automatic storage during night
[1-01] on the moment that the setback function starts [2-01].
Refer to
"[5] Automatic setback and disinfection set point" on page 23
for temperature set points.
[3] Weather dependent set point
When weather dependent operation is active, the leaving water
temperature is determined automatically depending on the outdoor
temperature: colder outdoor temperatures will result in warmer water
and vice versa. The unit has a floating set point. Activating this
operation will result in a lower power consumption than use with a
manually fixed leaving water set point.
During weather dependent operation, the user has the possibility to
shift up or down the target water temperature by a maximum of 5°C.
This "
" is the temperature difference between the
temperature set point calculated by the controller and the real set
point. E.g. a positive shift value means that the real temperature set
point will be higher than the calculated set point.
It is advised to use the weather dependent set point because it
adjusts the water temperature to the actual needs for space heating.
It will prevent the unit from switching too much between thermo ON
operation and thermo OFF operation when using the remote
controller room thermostat or external room thermostat.
NOTE
■
Make sure the domestic hot water is only heated up
to the domestic hot water temperature you require.
Start with a low domestic hot water storage
temperature set point, and only increase if you
feel that the domestic hot water supply
temperature is not sufficient for your needs (this
depends on your water using pattern).
■
Make sure the domestic hot water is not heated
unnecessary. Start with activating automatic
storage during night (default setting). If it seems
that the domestic hot water night storage
operation is not sufficient for your needs, an
additional storage during daytime can be set.
■
For energy-saving purposes, it is advised to
enable the weather dependent domestic water
heating. Refer to setting
■
To activate the domestic hot water mode press
the
button, the icon should be displayed.
NOTE
■
By default the setback function is enabled.
■
The setback function can be combined with the
automatic weather dependent set point operation.
■
Setback function is an automatic daily scheduled
function.
A
Normal room temperature set point
t
Time
T
Temperature
A
Normal leaving water temperature set point
B
Leaving water setback temperature
t
Time
T
Temperature
T
t
Target water temperature
T
A
Ambient (outdoor) temperature
= Shift value
[2-01]
[2-02]
A
T
t
21
°
C
[5-03] 18
°
C
[2-01]
[2-02]
B
A
T
t
65
°
C
60
°
C
5
°
C [5-02]
Lo_Ti
Lo_A
Hi_A
T
A
T
t
+ 05
00
– 05
Hi_Ti
Shift value
4PEN402191-1B_2017_09.book Page 22 Friday, October 6, 2017 7:03 PM
