Daikin EPRA18DAW1 Installer's Reference Manual page 129

EPRA14~18DAV3+W1 + ETVZ16S18+23DA6V+9W
Daikin Altherma 3 H HT F
4P587503-1A – 2020.01
If...
▪ Space heating/cooling=On, and
▪ Operation mode=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:
▪ [C.2] Space heating/cooling=On, and
▪ [9.5.1] Emergency=Automatic or auto SH normal/DHW off.
However, if [1.4.1] Antifrost is activated, limited frost protection by the unit is
possible.
In case of 1 leaving water temperature zone:
If...
▪ Space heating/cooling=Off,
and
▪ Outdoor ambient temperature drops
below 6°C
▪ Space heating/cooling=On, and
▪ The external room thermostat is
"Thermo OFF", and
▪ Outdoor temperature drops below
6°C
▪ Space heating/cooling=On, and
▪ The external room thermostat is
"Thermo ON"
In case of 2 leaving water temperature zones:
If...
▪ Space heating/cooling=Off,
and
▪ Outdoor ambient temperature drops
below 6°C
▪ Space heating/cooling=On, and
▪ Operation mode=Heating, and
▪ The external room thermostat is
"Thermo OFF", and
▪ Outdoor temperature drops below
6°C
▪ Space heating/cooling=On, and
▪ Operation mode=Cooling
Room thermostat control ([C‑07]=2)
9
|
Then...
There is no room frost protection.
Then...
▪ The unit will supply leaving water to
the heat emitters to heat up the room
again, and
▪ the temperature setpoint of the
leaving water will be lowered.
▪ The unit will supply leaving water to
the heat emitters to heat up the room
again, and
▪ the temperature setpoint of the
leaving water 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 temperature setpoint of the
leaving water will be lowered.
▪ The unit will supply leaving water to
the heat emitters to heat up the room
again, and
▪ the temperature setpoint of the
leaving water will be lowered.
There is no room frost protection.
Configuration
Installer reference guide
129