Daikin Altherma 3 WS EWSAH06UD 9W Series Installer's Reference Manual page 166

11 | Configuration
Installer reference guide
166
# Code
[2.9] [C‑07]
Ext thermostat type
Only applicable in external room thermostat control.
NOTICE
If an external room thermostat is used, the external room thermostat will control the
room frost protection. However, the room frost protection is only possible if [C.2]
Space heating/cooling=On.
# Code
[2.A] [C‑05]
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.
Description
▪ 0: Leaving water
▪ 1: External room thermostat
▪ 2: Room thermostat
Description
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
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, EKRTRB)
room thermostat
condition. The room
EWSAH/X06UD
Daikin Altherma 3 WS
4P675765-1 – 2022.04