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Configuration
Installer reference guide
145
ERGA04~08EAV3(A) + EHBH/X04+08EA/EJ6V+9W
Daikin Altherma 3 R W
4P629085-1 – 2020.08
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: Example"
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]
Description
Leaving water temperature control
([C
‑
07]=0)
Room frost protection is NOT guaranteed.
External room thermostat control
([C
‑
07]=1)
Allow for the external room thermostat to
take care of room frost protection:
▪
Set
[C.2]
Space
heating/
cooling
=
On
.
Room thermostat control
([C
‑
07]=2)
Allow for the user interface 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
.
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, the room
Antifrost
setting MUST be disabled.
NOTICE
Room frost protection.
Even if you turn OFF space heating/cooling operation ([C.2]:
Operation
>
Space heating/cooling
), room frost protection –if enabled– will
remain active.
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...
Then...
Space heating/cooling
is OFF and
the outdoor ambient temperature
drops below 4°C
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.
