Daikin Altherma EAVX-D9WG Installer's Reference Manual page 53

To determine if a heating/cooling heat pump model is installed
1 Go to [4]: Space heating/cooling.
2 Check if [4.1] Operation mode is listed and editable.
If so, a heating/cooling heat pump model is installed.
To tell the system which space operation to use, you can:
You can...
Check which space operation mode is
currently used.
Set the space operation mode permanently. Main menu
Restrict automatic changeover according
to a monthly schedule.
To check which space operation mode is currently used
The space operation mode is displayed on the home screen:
▪ When the unit is in heating mode, the
▪ When the unit is in cooling mode, the
The status indicator shows if the unit is currently in operation:
▪ When the unit is not in operation, the status indicator will show a
blue pulsation with an interval of approximately 5 seconds.
▪ While the unit is in operation, the status indicator will light up blue
constantly.
To set the space operation mode
1 Go to [4.1]: Space heating/cooling > Operation mode
2 Select one of the following options:
▪ Heating: Always heating mode
▪ Cooling: Always cooling mode
▪ Automatic: The operation
automatically based on the outdoor temperature.
Restricted according to the operation mode
schedule.
Automatic heating/cooling changeover is only applicable for EABX,
EAVX and EAVZ (only with EKHVCONV2 installed).
When Automatic is selected, the changing of the operation mode is
based on the Operation mode schedule [4.2]: the end user indicates
on a monthly base which operation is allowed.
To restrict automatic changeover according to a schedule
Conditions: You set the space operation mode to Automatic.
1 Go to [4.2]: Space heating/cooling > Operation mode
schedule.
2 Select a month.
3 For each month, select an option:
▪ Reversible: Not restricted
▪ Heating only: Restricted
▪ Cooling only: Restricted
4 Confirm the changes.
Example: Changeover restrictions
When
During cold season.
Example: October, November,
December, January, February and March.
During warm season.
Example: June, July and August.
In-between.
Example: April, May and September.
EPGA11~16DAV3 + EAVH/X16S18+23DA6V+9W
Daikin Altherma – Low temperature split
4P556070-1 – 2019.02
Location
Home screen
icon is shown.
icon is shown.
mode changes
Restriction
Heating only
Cooling only
Reversible
If both the Operation mode and the Operation mode schedule are
set to Automatic, the operation mode will be determined by the
outdoor temperature. The operation mode will be changed in order
to ALWAYS be within the operation range determined by the Space
heating off temperature and the Space cooling off temperature. If the
outdoor temperature drops, the operation mode will switch to cooling
and vice versa. The outdoor temperature is time-averaged.
If the outdoor temperature is between the Space heating off
temperature and the Space cooling off temperature, the operation
mode remains unchanged.
Operation range
Depending on the average outdoor temperature, the operation of the
unit in space heating or space cooling is prohibited.
# Code
[4.3.1] [4-02] Space heating off temperature: When the
averaged outdoor temperature rises
above this value, space heating is turned
off. This setting is also used in automatic
heating/cooling changeover.
▪ 14°C~35°C
[4.3.2] [F-01] Space cooling off temperature: When the
averaged outdoor temperature drops
below this value, space cooling is turned
off. This setting is also used in automatic
heating/cooling changeover.
▪ 10°C~35°C
Exception: If the system is configured in room thermostat control
with one leaving water temperature zone and quick heat emitters,
the operation mode will change based on:
▪ The measured indoor temperature: Besides the heating and the
cooling desired room temperature, the installer sets a hysteresis
value (e.g. when in heating, this value is related to the desired
cooling temperature) and an offset value (e.g. when in heating,
this value is related to the desired heating temperature).
Example: The desired room temperature in heating mode is 22°C
and in cooling mode it is 24°C, with a hysteresis value of 1°C and
an offset of 4°C. Changeover from heating to cooling will occur
when the room temperature rises above the maximum of the
desired cooling temperature added by the hysteresis value (thus
25°C) and the desired heating temperature added by the offset
value (26°C). Oppositely, changeover from cooling to heating will
occur when the room temperature drops below the minimum of
the desired heating temperature subtracted by the hysteresis
value (thus 21°C) and the desired cooling temperature subtracted
by the offset value (thus 20°C)
Guard timer to prevent too frequent changing from heating to
cooling and vice versa.
# Code
Changeover settings related to the indoor temperature. ONLY
applicable when Automatic is selected and the system is configured
in room thermostat control with 1 leaving water temperature zone
and quick heat emitters.
N/A [4-0B] Hysteresis: Ensures that changeover is
ONLY done when necessary. The space
operation ONLY changes from heating to
cooling when the room temperature rises
above the desired cooling temperature
added by the hysteresis value.
▪ Range: 1°C~10°C
8 Configuration
Description
Description
Installer reference guide
53