11
|
Configuration
Installer reference guide
153
EWSAH/X06D
Daikin Altherma 3 WS
4P675764-1 – 2022.04
11.5.2 Room
Setpoint screen
Control the room temperature of the main zone via setpoint screen [1]
Room
.
See
142].
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]
Description
Leaving water temperature control
([C
‑
07]=0)
Room frost protection is NOT guaranteed.
External room thermostat control
([C
‑
07]=1)
Allow for the external room thermostat to
take care of room frost protection:
▪
Set
[C.2]
Space
heating/
cooling
=
On
.
Room thermostat control
([C
‑
07]=2)
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
.
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 heating/cooling
), room frost protection operation –if
enabled– can still activate. However, for leaving water temperature control and
external room thermostat control, the protection is NOT guaranteed.
