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Configuration
Installer reference guide
142
E EHFH03S18D
Daikin Altherma 3 R F
4P596806-1C – 2022.09
[C‑07]=1: external room thermostat control
Under external room thermostat control, room frost protection is guaranteed by
the external room thermostat, provided that the leaving water temperature home
page is ON on the user interface, and the auto emergency setting ([A.6.C]) is set to
"1".
Additionally, limited frost protection by the unit is possible:
In case of…
…then the following applies:
One leaving water temperature zone
▪
When the leaving water temperature
home page is OFF and the outdoor
ambient temperature drops below
4°C, 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.
▪
When the leaving water temperature
home page is ON, the external room
thermostat is "Thermo OFF" and the
outdoor ambient temperature drops
below 4°C, 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.
▪
When the leaving water temperature
home page is ON and the external
room thermostat is "Thermo ON",
then room frost protection is
guaranteed by the normal logic.
Two leaving water temperature zones
▪
When the leaving water temperature
home page is OFF, and the outdoor
ambient temperature drops below
4°C, 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.
▪
When the leaving water temperature
home page is ON, the operation mode
is "heating", and the outdoor ambient
temperature drops below 4°C, 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 selection of "cooling" or "heating"
is done via the user interface. When
the leaving water temperature home
page is ON and the operation mode is
"cooling", then there is no protection.