Room - Daikin Altherma 3 WS EWSAH06UD 9W Series Installer's Reference Manual

11 | Configuration

11.5.2 Room

Installer reference guide
158
Setpoint screen
Control the room temperature of the main zone via setpoint screen [1] Room.
See "11.3.5 Setpoint screen" [
Antifrost
[1.4] Antifrost prevents the room from getting too cold. This setting is
applicable when [2.9] Control=Room thermostat, but also offers functionality
for leaving water temperature control and external room thermostat control. In
case of the latter two, Antifrost can be activated by setting field setting
[2-06]=1.
Room frost protection, when enabled, is not guaranteed when there is no room
thermostat that can activate the heat pump. This is the case when:
▪ [2.9] Control=External room thermostat and [C.2] Space heating/
cooling=Off, or if
▪ [2.9] Control=Leaving water.
In the above cases, Antifrost will heat the space heating water to a reduced
setpoint when the outdoor temperature is lower than 4°C.
Main zone unit control method [2.9]
Leaving water temperature control
([C‑07]=0)
External room thermostat control
([C‑07]=1)
Room thermostat control
([C‑07]=2)
INFORMATION
If a U4 error occurs, room frost protection is NOT guaranteed.
NOTICE
If the room Antifrost setting is active and a U4 error occurs, the unit will
automatically start the Antifrost function via the backup heater. If the backup
heater is not allowed for room frost protection during a U4 error, the room
Antifrost setting MUST be disabled.
NOTICE
Room frost protection. Even if you turn OFF space heating/cooling operation ([C.2]:
Operation > Space
enabled– can still activate. However, for leaving water temperature control and
external room thermostat control, the protection is NOT guaranteed.
4
147].
Room frost protection is NOT guaranteed.
Allow for the external room thermostat to
take care of room frost protection:
▪ Set [C.2]
cooling=On.
Allow for the dedicated Human Comfort
Interface (BRC1HHDA used as room
thermostat) to take care of room frost
protection:
▪ Set antifrost [1.4.1] Activation=Yes.
▪ Set the temperature of the antifrost
function in [1.4.2] Room setpoint.
heating/cooling), room frost protection operation –if
Description
Space heating/
EWSAH/X06UD
Daikin Altherma 3 WS
4P675765-1 – 2022.04