Daikin Altherma 3 M - Page 150

11 | Configuration
Installer reference guide
150
EBLA09~16DA + EDLA09~16DA
Daikin Altherma 3 M
4P620241-1 – 2020.06
Heating schedule
Applicable for all models.
Define a heating schedule of the room temperature in [1.2] Heating schedule .
See "Schedule screen: Example"[4138].
Cooling schedule
Only applicable for reversible models.
Define a cooling schedule of the room temperature in [1.3] Cooling schedule.
See "Schedule screen: Example"[4138].
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 6°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.
NOTICE
If the system does NOT contain a backup heater, then:
▪ Make sure that the room antifrost control is activated ([2-06]=1).
▪ Do NOT change the default room antifrost temperature [2-05].
▪ Make sure that the water pipe freeze prevention is activated ([4-04]≠2).
INFORMATION
If a U4 error occurs, room frost protection is NOT guaranteed.