Daikin Altherma EAVX-D9WG Installer's Reference Manual page 46

8 Configuration
You can set the room temperature heating schedule using the
schedule screen. For more information about this screen, see
"8.3.8 Schedule screen: Example" on
Cooling schedule
This is available for reversible models.
You can set the room temperature cooling schedule using the
schedule screen. For more information about this screen, see
"8.3.8 Schedule screen: Example" on
Antifrost
Room frost protection [1.4] prevents the room from getting too cold.
This setting behaves differently depending on the set unit control
method [2.9]. Perform actions according to the table below.
Main zone unit control
method [2.9]
Leaving water temperature
control ([C‑07]=0)
External room thermostat
control ([C‑07]=1)
Room thermostat control
([C‑07]=2)
INFORMATION
If a U4 error occurs, room frost protection is NOT
guaranteed.
For more detailed information about room frost protection in relation
to the applicable unit control method, see the sections below:
Leaving water temperature control ([C‑07]=0)
Under leaving water temperature control, room frost protection is
NOT guaranteed. However, if room antifrost [1.4] is activated, limited
frost protection by the unit is possible:
If...
Space heating/cooling is OFF
and the outdoor ambient
temperature drops below 4°C
Space heating/cooling is ON and
the operation mode is "heating"
Space heating/cooling is ON and
the operation mode is "cooling"
External room thermostat control ([C‑07]=1)
Under external room thermostat control, room frost protection is
guaranteed by the external room thermostat, provided that Space
heating/cooling [C.2] is turned ON and the emergency setting [9.5] is
set to automatic.
In case of one leaving water temperature zone:
Installer reference guide
46
page 44.
page 44.
Description
Room frost protection is NOT
guaranteed.
Allow for the external room
thermostat to take care of room
frost protection:
▪ Turn ON [C.2]: Space heating/
cooling
Allow for the user interface used as
room thermostat to take care of
room frost protection:
▪ Choose [1.4.1]=1: Room
Antifrost > Activation > Yes
▪ Set the room antifrost setpoint
([1.4.2]): Room > Antifrost >
Room setpoint
Then...
The unit will supply leaving water
to the heat emitters to heat up
the room again, and the leaving
water temperature setpoint will
be lowered.
The unit will supply leaving water
to the heat emitters to heat up
the room according to normal
logic.
There is no room frost protection.
If...
Space heating/cooling is OFF
and the outdoor ambient
temperature drops below 4°C
Space heating/cooling is ON, the
external room thermostat is
"Thermo OFF" and the outdoor
temperature drops below 4°C
Space heating/cooling is ON and
the external room thermostat is
"Thermo ON"
In case of two leaving water temperature zones:
If...
Space heating/cooling is OFF
and the outdoor ambient
temperature drops below 4°C
Space heating/cooling is ON, the
external room thermostat is
"Thermo OFF", the operation
mode is "heating" and the
outdoor temperature drops below
>
4°C
Space heating/cooling is ON and
the operation mode is "cooling"
Room thermostat control ([C‑07]=2)
During room thermostat control, room frost protection is guaranteed
if it is enabled. When room frost protection [2‑06] is activated and the
room temperature drops below the room antifrost temperature [2‑05],
the unit will supply leaving water to the heat emitters to heat up the
room again.
# Code
[1.4.1] [2-06]
[1.4.2] [2-05]
INFORMATION
When the user interface used as room thermostat is
disconnected (due to miswiring, damage of the cable), then
room frost protection is NOT guaranteed.
NOTICE
If Emergency is set to Manual ([9.5]=0), and the unit is
triggered to start emergency operation, the unit will stop
and need to be recovered manually via the user interface.
To recover operation manually, go to the Malfunctioning
main menu screen, where the user interface will then ask
you to confirm emergency operation before starting.
Room frost protection is active even if the user does NOT
confirm emergency operation.
Setpoint range
ONLY applicable in room thermostat control. To save energy by
preventing overheating or undercooling the room, you can limit the
range of the room temperature, both for heating and/or cooling.
Then...
The unit will supply leaving water
to the heat emitters to heat up
the room again, and the leaving
water temperature setpoint will
be lowered.
The unit will supply leaving water
to the heat emitters to heat up
the room again, and the leaving
water temperature setpoint will
be lowered.
Room frost protection is
guaranteed by the normal logic.
Then...
The unit will supply leaving water
to the heat emitters to heat up
the room again, and the leaving
water temperature setpoint will
be lowered.
The unit will supply leaving water
to the heat emitters to heat up
the room again, and the leaving
water temperature setpoint will
be lowered.
There is no room frost protection.
Description
Activation:
▪ 0 No: Antifrost functionality is OFF.
▪ 1 Yes: Antifrost functionality is on.
Room setpoint 4°C~16°C
EPGA11~16DAV3 + EAVH/X16S18+23DA6V+9W
Daikin Altherma – Low temperature split
4P556070-1 – 2019.02