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Configuration
Installer reference guide
124
EPGA11~ EAV23DA6V
Daikin Altherma 3 H F
4P606487-1 – 2019.12
#
Code
Description
[2.A]
[C‑05]
External room thermostat type for the main
zone:
▪
1:
1
contact
: The used external room
thermostat can only send a thermo ON/OFF
condition. There is no separation between
heating or cooling demand. The room
thermostat is connected to only 1 digital input
(X2M/35).
Select this value in case of a connection to the
heat pump convector (FWXV).
▪
2:
2 contacts
: The used external room
thermostat can send a separate heating/cooling
thermo
ON/OFF
condition.
The
room
thermostat is connected to 2 digital inputs
(X2M/35 and X2M/34).
Select this value in case of a connection to the
wired (EKRTWA) or wireless (EKRTR1) room
thermostat
Leaving water temperature: Delta T
In heating for the main zone, the target delta T (temperature difference) depends
on the selected emitter type for the main zone.
The difference delta T indicates, depends on the operation mode:
▪
In heating mode, delta T indicates the temperature difference between the
leaving water setpoint and entering water.
▪
In cooling mode, delta T indicates the temperature difference between entering
and leaving water temperature.
The unit is designed to support underfloor loops operation. The recommended
leaving water temperature for underfloor loops is 35°C. In such case, the unit will
realize a temperature difference of 5°C, which means that the entering water
temperature is around 30°C.
Depending on the installed type of heat emitters (radiators, heat pump convector,
underfloor loops) or situation, you can change the difference between entering
and leaving water temperature.
Note:
: The pump will regulate its flow to keep the delta T. In some special cases,
the measured delta T can differ from the set value.
INFORMATION
When only the backup heater is active in heating, delta T will be controlled according
to the fixed capacity of the backup heater. It is possible that this delta T is different
from the selected target delta T.
INFORMATION
In heating, the target delta T will only be achieved after some operation time, when
the setpoint is being reached, because of the big difference between leaving water
temperature setpoint and inlet temperature at startup.
