10 | Configuration
Installer reference guide
166
ERGA04~08E + EHVH04+08SU18+23E
Daikin Altherma 3 R F
4P629090-1C – 2022.08
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.
Space heating/cooling is ON and
the operation mode is "heating"
The unit will supply leaving water to the
heat emitters to heat up the room
according to normal logic.
Space heating/cooling is ON and
the operation mode is "cooling"
There is no room frost protection.
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 one leaving water temperature zone:
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.
Space heating/cooling is ON, the
external room thermostat is "Thermo
OFF" and the outdoor 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.
Space heating/cooling is ON and
the external room thermostat is
"Thermo ON"
Room frost protection is guaranteed by
the normal logic.
In case of two leaving water temperature zones:
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.
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
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.
Space heating/cooling is ON and
the operation mode is "cooling"
There is no room frost protection.
Room thermostat control ([C‑07]=2)
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