Operation manual
7
EKHBRD011~Y1
Indoor unit for air to water heat pump system and options
4P402192-1A – 2015.04
Domestic water heating operation (
)
For the domestic water heating mode, several operations are
possible:
•
storage operation (either automatic or manually set)
•
reheat operation
•
disinfection operation
The purpose of each operation, and how the configuration is done, is
explained below.
Domestic water heating modes
Automatic storage
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 the storage temperature set point is reached. During operation
of this mode, the
icon will be blinking with 1 second intervals.
Automatic storage is the recommended domestic hot water mode. In
this mode, water heats up during the night (when space heating
requirements are lower) until the storage temperature set point is
reached. 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 the timing are field settings.
Refer to the chapter
"Field settings" on page 16
for a detailed
description how to set one or more 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.
■
[b-03] set point: storage temperature (see figure
"Domestic
water heating modes" on page 7
) only valid if [b-02]=0.
■
[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.
■
[b-04] Automatic maximum domestic hot water storage
temperature: default = 70°C.
NOTE
Any domestic water heating operation is impossible
when the domestic hot water tank is not installed.
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
B
C
D
E
F
G
T
t
[5-01]
NOTE
Remark that the
icon will only be blinking during
effective automatic storage operation. Presence of the
permanently lit
icon does not mean that automatic
storage is enabled, but only means that reheat is
enabled.
During operation it is always possible to cancel the
operation by pushing the
button once.
Be aware that after pushing the
button, it is possible
that the permanently lit
icon still displays.
Be aware that despite the automatic storage is a
pre-programmed schedule timer, it is only active when the
schedule timer is enabled. This means that you have to
push the
button and confirm that the is displayed to
make sure that the automatic storage will operate.
A
Ambient temperature
T
Domestic hot water storage temperature
NOTE
The ambient temperatures for weather dependent
domestic water heating (see figure) are fixed and can
not be changed.
T
A
[b-04]
55
°
C
15
°
C
25
°
C
