Daikin EHFZ03S18DJ3V Installer's Reference Manual page 136

10 | Configuration
Installer reference guide
136
In case of...
Two leaving water temperature zones
[C‑07]=0: leaving water temperature control
Under leaving water temperature control, room frost protection is NOT
guaranteed. However, if [2‑06] is set to "1", limited frost protection by the unit is
possible:
▪ 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, then the unit will supply
leaving water to the heat emitters to heat up the room according to normal logic.
Shut-off valve
The following is only applicable in case of 2 leaving water temperature zones. In
case of 1 leaving water temperature zone, connect the shut-off valve to the
heating/cooling output.
The shut-off valve, which is in the main leaving water temperature zone, output is
configurable.
INFORMATION
During defrost operation, the shut-off valve is ALWAYS opened.
Thermo On/OFF: the valve closes, depending on [F-0B] when there is no heating
demand from the main zone. Enable this setting to:
▪ avoid leaving water supply to the heat emitters in the main LWT zone (through
the mixing valve station) when there is request from the additional LWT zone.
▪ activate the On/OFF pump of the mixing valve station ONLY when there is
demand. See "6 Application
...then the following applies:
▪ 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,
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.
4
guidelines" [ 31].
and the leaving
ERLA03DAV3 + EHFZ03S18DJ3V
Daikin Altherma 3 R F
4P596821-1B – 2021.10
water