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[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.
INFORMATION
■
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
"[b-02]" on page
Refer to
"[b] Domestic hot water set points" on page 30
temperature set points.
HXHD125A7V1B
VRVIII system indoor unit
4PW62584-1A – 11.2010
30.
for
[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.
INFORMATION
■
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.
■
[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.
T
A
21°C
[5-03] 18°C
[2-01]
A
Normal room temperature set point
t
Time
T
Temperature
T
A
65°C
5°C [5-02]
B
60°C
[2-01]
A
Normal leaving water temperature set point
B
Leaving water setback temperature
t
Time
T
Temperature
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 28
for temperature set points.
t
[2-02]
t
[2-02]
Installation manual
27
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