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To perform an underfloor heating screed dryout
To read out the status of an underfloor heating screed dryout
EPRA14~18D + ETBH/X16E
Daikin Altherma 3 H HT W
4P644736-1D – 2023.10
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.
NOTICE
To perform an underfloor heating screed dryout, room frost protection needs to be
disabled ([2‑06]=0). By default, it is enabled ([2‑06]=1). However, due to the
"installer-on-site" mode (see "Commissioning"), room frost protection will be
automatically disabled for 12 hours after the first power-on.
If the screed dryout still needs to be performed after the first 12 hours of power-on,
manually disable room frost protection by setting [2‑06] to "0", and KEEP it disabled
until the screed dryout has finished. Ignoring this notice will result in cracking of the
screed.
NOTICE
For the underfloor heating screed dryout to be able to start, make sure the following
settings are met:
▪
[4‑00]=1
▪
[C‑02]=0
▪
[D‑01]=0
▪
[4‑08]=0
▪
[4‑01]≠1
Steps
Conditions: An underfloor heating screed dryout schedule has been programmed.
See
"To program an underfloor heating screed dryout
Conditions: Make sure all operation is disabled. Go to [C]: Operation and turn off
Space heating/cooling and Tank operation.
1 Set the user permission level to Installer. See
the user permission
2 Go to [A.4]: Commissioning > UFH screed dryout.
3 Select Start UFH screed dryout.
4 Select OK to confirm.
Result: The underfloor heating screed dryout starts. It stops
automatically when done.
5 To stop the underfloor heating screed dryout manually:
1 Open the menu and go to Stop UFH screed dryout.
2 Select OK to confirm.
Conditions: You are performing an underfloor heating screed dryout.
4
level" [
137].
11
Commissioning
|
4
schedule" [
240].
"To change
—
—
Installer reference guide
241
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