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5.3. Space heating operation ( )
Space heating operation can be controlled in two different ways:
I
based on room temperature,
I
based on leaving water temperature.
The purpose of each operation and how the configuration is done, is
explained below.
Room temperature control
In this mode, heating will be activated as required by the room
temperature set point. The set point can be set manually or through
the schedule timer.
INFORMATION
When using room temperature control, space heating
operation based on room temperature will have priority
over leaving water control.
Note that it is possible that the leaving water temperature
becomes higher than the set point if the unit is controlled
by room temperature.
Selecting space heating operation
1
Use the
button to switch ON/OFF space heating ( ).
Icon
appears on the display as well as the corresponding
actual room temperature.
The operation LED
lights up.
2
Use the
and
temperature.
Temperature range for heating: 16°C~32°C (room temperature)
In order to avoid overheating, space heating is not operable
when the outdoor ambient temperature rises above a certain
temperature (see operation range).
Refer to
"5.9. Programming and consulting the schedule timer"
on page 13
for setup of the schedule timer function.
3
Use the
and
water temperature which you want to be used to heat up your
system (for detailed information see
control" on page
7).
HXHD125A8V1B
VRV IV system indoor unit
4P404572-1 – 2015.04
buttons to set the desired room
buttons to select the leaving
"Leaving water temperature
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
I
Remark that the
operation.
I
By default the setback function is enabled.
I
The setback function can be combined with the
automatic weather dependent set point operation.
I
Setback function is an automatic daily scheduled
function.
The setback function is configured through field settings. Refer to the
chapter
"5.12. Field settings" on page 18
how to set one or more field settings.
I
[2-00] Status: defines whether the setback function is turned ON
(1) or OFF (0)
I
[2-01] Start time: time at which setback is started
I
[2-02] Stop time: time at which setback is stopped
I
[5-03] Room setback temperature
T
A
21°C
[5-03] 18°C
[2-01]
A
Normal room temperature set point
t
Time
T
Temperature
INFORMATION
I
While room temperature setback function is active,
leaving water setback operation is also performed
(see
"Leaving water temperature control" on page
I
Pay attention not to set the setback value too low,
especially during colder periods (e.g. winter time). It is
possible that the room temperature can not be
reached (or it will take a much longer time) because of
the big temperature difference
icon will be flashing during setback
for a detailed description
t
[2-02]
Operation manual
7).
6
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