Daikin EBLA04E2V3, Installer'S Reference Manual

Page: 231 / 284

12 | Commissioning
Installer reference guide
231
EBLA04~E23V3 + EDLA04~E23V3
Daikin Altherma 3 M
4P685228-1A – 2022.05
UFH screed dryout after installation of outdoor unit
If the outdoor ambient temperature and [4‑02] setting > 25°C the backup heater
will perform the screed dryout and supply the leaving water without heat pump
operation.
To program an underfloor heating screed dryout schedule
Duration and temperature
The installer can program up to 20 steps. For each step he needs to enter:
1 the duration in hours, up to 72 hours,
2 the desired leaving water temperature, up to 55°C.
Example:
t
T
A1
25°C (1)
35°C (2)
24h (1) 36h (2)
T Desired leaving water temperature (15~55°C)
t Duration (1~72 h)
(1) Action step 1
(2) Action step 2
Steps
1 Set the user permission level to Installer . See "To change
the user permission level" [ 4 124].
—
2 Go to [A.4.2]: Commissioning > UFH screed dryout >
Program .
3 Program the schedule:
To add a new step, select the next empty line and change its
value. To delete a step and all steps below it, decrease the
duration to "–".
—
▪ Scroll through the schedule.
▪ Adjust the duration (between 1 and 72 hours) and
temperatures (between 15°C and 55°C).
4 Press the left dial to save the schedule.
To perform an underfloor heating screed dryout
INFORMATION
▪
If Emergency is set to Manual ([9.5]=0), and the unit is triggered to start
emergency operation, the user interface will ask confirmation before starting.
The underfloor heating screed dryout function is active even if the user does NOT
confirm emergency operation.
▪
During underfloor heating screed dryout, pump speed limitation [9‑0D] is NOT
applicable.