Daikin EPRA10EAV3 Installer's Reference Manual page 163

EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF
Daikin Altherma 3 H MT ECH₂O
4P663478-1B – 2022.07
Heating schedule
Applicable for all models.
Define a heating schedule of the room temperature in [1.2] Heating schedule .
See "10.3.7 Schedule screen:
Cooling schedule
Only applicable for reversible models.
Define a cooling schedule of the room temperature in [1.3] Cooling schedule.
See "10.3.7 Schedule screen:
Antifrost
[1.4] Antifrost prevents the room from getting too cold. This setting is
applicable when [2.9] Control=Room thermostat, but also offers functionality
for leaving water temperature control and external room thermostat control. In
case of the latter two, Antifrost can be activated by setting field setting
[2-06]=1.
Room frost protection, when enabled, is not guaranteed when there is no room
thermostat that can activate the heat pump. This is the case when:
▪ [2.9] Control=External room thermostat and [C.2] Space heating/
cooling=Off, or if
▪ [2.9] Control=Leaving water.
In the above cases, Antifrost will heat the space heating water to a reduced
setpoint when the outdoor temperature is lower than 6°C.
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.
NOTICE
If the room Antifrost setting is active and a U4 error occurs, the unit will
automatically start the Antifrost function via the backup heater. If the backup
heater is not allowed for room frost protection during a U4 error, the room
Antifrost setting MUST be disabled.
4
Example" [ 153].
4
Example" [ 153].
Room frost protection is NOT guaranteed.
Allow for the external room thermostat to
take care of room frost protection:
▪ Set [C.2]
cooling=On.
Allow for the dedicated Human Comfort
Interface (BRC1HHDA used as room
thermostat) to take care of room frost
protection:
▪ Set antifrost [1.4.1] Activation=Yes.
▪ Set the temperature of the antifrost
function in [1.4.2] Room setpoint.
10 Configuration
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Description
Space heating/
Installer reference guide
163