![background image](http://html1.mh-extra.com/html/daikin/erlq004cav3/erlq004cav3_installers-reference-manual_4059854063.webp)
10 Handover to the user
Installer reference guide
63
ERLQ004~008CA + 08S18CA3VF
Daikin Altherma low temperature split
4P3662261 – 2014.01
9.6
Underfloor heating screed dryout
This function is used for drying out the screed of an underfloor
heating system very slowly during the construction of a house. It
allows the installer to program and execute this program.
Make sure the user interface shows the home screens and that the
space heating and domestic hot water demands are turned off.
This function can be executed without finishing the outdoor
installation. In this case, the backup heater will perform the screed
dryout and supply the leaving water without heat pump operation.
NOTICE
The installer is responsible for:
▪ contacting the screed manufacturer for the initial
heating instructions to avoid cracking the screed,
▪ programming the underfloor heating screed dryout
schedule according to the above instruction of the
screed manufacturer,
▪ checking the proper functioning of the setup on a
regular basis,
▪ selecting the correct program complying with the type
of the used screed of the floor.
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.
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
9.6.1
To program an underfloor heating screed
dryout schedule
1
Go to [A.7.2]:
> Installer settings > Commissioning > UFH
screed dryout > Set dryout schedule.
2
Use the
,
,
, and
to program the schedule.
▪ Use
and
to scroll through the schedule.
▪ Use
and
to adjust the selection.
If a time is selected, you can set the duration between 1 and
72 hours.
If a temperature is selected, you can set the desired leaving
water temperature between 15°C and 55°C.
3
To add a new step, select "–h" or "–" on an empty line and
press
.
4
To delete a step, set the duration to "–" by pressing
.
5
Press
to save the schedule.
INFORMATION
It is important that there is no empty step in the program.
The schedule will stop when a blank step is programmed
OR when 20 consecutive steps have been executed.
9.6.2
To perform an underfloor heating screed
dryout
INFORMATION
Preferential kWh rate power supply cannot be used in
combination with underfloor heating screed dryout.
1
Go to [A.7.2]:
> Installer settings > Commissioning > UFH
screed dryout.
2
Set a dryout program.
3
Select Start dryout and press
.
4
Select OK and press
.
Result:
The underfloor heating screed dryout starts and following
screen will be shown. It stops automatically when done. To stop it
manually, press
, select OK and press
.
Screed dryout
Tue 15:10
Stop
Current step
1
14d 12h
25°C
Remaining
Desired LWT
9.6.3
To readout the status of an underfloor
heating screed dryout
1
Press
.
2
The current step of the program, the total remaining time, and
the current desired leaving water temperature will be displayed.
INFORMATION
There is limited access to the menu structure. Only the
following menus can be accessed:
▪ Information.
▪ Installer settings > Commissioning > UFH screed dryout
9.6.4
To interrupt an underfloor heating screed
dryout
When the program is stopped by an error, an operation switch off, or
a power failure, the U3 error will be displayed on the user interface.
To resolve the error codes, see
"12.3 Solving problems based on
error codes" on page 68
. To reset the U3 error, your User
permission level needs to be Installer.
1
Go to the underfloor heating screed dryout screen.
2
Press
.
3
Press
to interrupt the program.
4
Select OK and press
.
Result:
The underfloor heating screed dryout program is stopped.
When the program is stopped due to an error, an operation switch
off, or a power failure, you can read out the underfloor heating
screed dryout status.
5
Go to [A.7.2]:
> Installer settings > Commissioning > UFH
screed dryout > Dryout status > Stopped at and followed by the
last executed step.
6
Modify and restart the execution of the program.
10
Handover to the user
Once the test run is finished and the unit operates properly, please
make sure the following is clear for the user:
Summary of Contents for ERLQ004CAV3
Page 100: ...2 8 ...
Page 107: ......