About Operating The System; Space Cooling Operation; Space Heating Operation - Daikin SERHQ020BAW1 Installer And User Reference Manual

16.3.2

About operating the system

If the main power supply is turned off during operation, operation will
restart automatically after the power turns back on again.
16.3.3

Space cooling operation

Space cooling can be controlled in 2 different ways:
▪ based on room temperature
▪ based on leaving water temperature (default)
To switch space cooling on/off using room
temperature control
In this mode, cooling will be activated as required by the room
temperature setpoint. The setpoint can be set manually or through
the schedule timer.
INFORMATION
▪ When using room temperature control, space cooling
operation based on room temperature will have priority
over leaving water control.
▪ It is possible that the leaving water temperature
becomes higher than the setpoint if the unit is
controlled by room temperature.
1 Press to switch space cooling ( ) on/off.
Result: and the corresponding actual room temperature
setpoint appear on the display. The operation LED
2 Set the desired room temperature using
setup of the schedule timer function, see
timer" on page 60.
INFORMATION
Temperature range
temperature)
3 Select the leaving water temperature which you want to be
used to cool down your system using
detailed information, see "To switch space cooling on/off using
leaving water temperature control" on
To switch space cooling on/off using leaving water
temperature control
In this mode, cooling will be activated as required by the water
temperature setpoint. The setpoint can be set manually or through
the schedule timer.
1 Press to switch space cooling ( ) on/off.
Result: and the corresponding actual room temperature
setpoint appear on the display. The operation LED
2 Set the desired leaving water temperature using
.
INFORMATION
Temperature range for cooling: 5°C~20°C (leaving water
temperature).
For setup of the schedule timer function, see
cooling" on page 62, "To program space heating" on page
"To program quiet mode" on page 63.
INFORMATION
▪ When an external room thermostat is installed, the
thermo ON/OFF is determined by the external room
thermostat. The remote controller is then operated in
the leaving water control mode and is not functioning
as a room thermostat.
▪ The remote controller ON/OFF status always has
priority over the external room thermostat!
SERHQ020~032BAW1 + SEHVX20~64BAW
Split packaged air-cooled water chiller
4P508020-1B – 2018.04
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and
"16.3.6 Schedule
for cooling: 16°C~32°C (room
and
page 59.
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"To program space
62, and
INFORMATION
Setback operation and weather dependent setpoint are not
available in the cooling mode.
16.3.4

Space heating operation

Space heating is available for heat pump units only.
Space heating can be controlled in 2 different ways:
▪ based on room temperature
▪ based on leaving water temperature (default)
To switch space heating on/off using room
temperature control
Room temperature control
In this mode, heating will be activated as required by the room
temperature setpoint. The setpoint 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.
▪ It is possible that the leaving water temperature
becomes higher than the setpoint if the unit is
controlled by room temperature.
1 Press to switch space heating ( ) on/off.
. For
Result: and the corresponding actual room temperature
setpoint appear on the display. The operation LED
2 Set the desired room temperature using
order to avoid overheating, space heating cannot be used when
the outdoor ambient temperature rises above a certain
temperature (see
setup of the schedule timer function, see
timer" on page 60.
. For
INFORMATION
Temperature
temperature)
3 Select the leaving water temperature which you want to be
used to heat up your system using
detailed information, see
leaving water temperature control" on
Automatic setback function
For the automatic setback function settings, see field setting [2] in
"7.2.9 Field settings on the user interface" on
INFORMATION
and
▪ flashes during setback operation.
▪ While room temperature setback function is active,
leaving water setback operation is also performed (see
"To switch space cooling on/off using leaving water
temperature control" on
▪ Do not to set the setback value too low, especially
during colder periods (e.g. winter time). It is possible
that the room temperature cannot be reached (or it will
take much longer) because of the big temperature
difference.
The setback function provides the possibility to lower the room
temperature. It can be activated e.g. during the night, because
temperature demands during night and day are not the same.
16 Operation
and
"16.1 Operation range" on page
"16.3.6 Schedule
range for heating: 16°C~32°C
and
"To switch space heating on/off using
page 60.
page 35.
page 59).
Installer and user reference guide
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(room
. For
59