Underfloor Heating Screed Dryout - Daikin ERLA14D V3 Series Installer's Reference Manual

12 | Commissioning

12.4.5 Underfloor heating screed dryout

About underfloor heating screed dryout
To program an underfloor heating screed dryout schedule
Installer reference guide
258
▪ 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
▪ DHW signal test
▪ Bivalent signal test
▪ Alarm output test
▪ C/H signal test
▪ DHW pump test
▪ Tank valve test
▪ Bypass valve test
▪ Bizone kit direct pump test (bizone kit EKMIKPOA or EKMIKPHA)
▪ Bizone kit mixed pump test (bizone kit EKMIKPOA or EKMIKPHA)
▪ Bizone kit mixing valve test (bizone kit EKMIKPOA or EKMIKPHA)
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.
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:
ERLA11~16D + EBSH/X(B)11+16P30+50D
Daikin Altherma 3 R ECH₂O
4P663482-1C – 2023.05