HXHD125A8V1B
VRV IV system indoor unit
4P404572-1 – 2015.04
Operation manual
8
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.
The setback function is configured through field settings. Refer to
"5.12. Field settings" on page 18
for a detailed description how to set
one or more field settings.
■
[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
■
[5-02] Leaving water setback temperature (temperature drop)
5.4.
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.
INFORMATION
■
Remark that the icon will be flashing during setback
operation.
■
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 leaving water temperature set point
B
Leaving water temperature, including the leaving water setback
temperature
t
Time
T
Temperature
[2-01]
[2-02]
B
A
T
t
65
°
C
60
°
C
5
°
C [5-02]
INFORMATION
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
INFORMATION
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.
A
B
C
D
E
F
G
T
t
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