Underfloor Heating Screed Dryout - Daikin Altherma 3 R MT F Series Installer's Reference Manual

12.4.5 Underfloor heating screed dryout

About underfloor heating screed dryout
ERRA08~12E + ELVZ12S18+23E
Daikin Altherma 3 R MT F
4P708478-1 – 2023.05
4 Select OK to confirm.
Result: The actuator test run starts. It stops automatically when
ready (±30 min).
To stop the test run manually:
1 In the menu, go to Stop test run.
2 Select OK to confirm.
Possible actuator test runs
▪ Backup heater 1 test
▪ Backup heater 2 test
▪ Pump test
INFORMATION
Make sure that all air is purged before executing the test run. Also avoid disturbances
in the water circuit during the test run.
▪ Shut off valve test
▪ Diverter valve test (3-way valve for switching between space heating and
tank heating)
▪ Bivalent signal test
▪ Alarm output test
▪ C/H signal test
▪ DHW pump test
Purpose
The underfloor heating (UFH) screed dryout function is used for drying out the
screed of an underfloor heating system during the construction of the building.
NOTICE
The installer is responsible for:
▪
contacting the screed manufacturer for the maximum allowed water
temperature, to avoid cracking the screed,
▪
programming the underfloor heating screed dryout schedule according to the
initial heating instructions of the screed manufacturer,
▪
checking the proper functioning of the setup on a regular basis,
▪
performing the correct program complying with the type of the used screed.
UFH screed dryout before or during installation of outdoor unit
The UFH screed dryout 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.
12 Commissioning
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Installer reference guide
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