Daikin EWSAH06D 9W Series Installer's Reference Manual page 204

11 | Configuration
Central water loop freezing temperature
Installer reference guide
204
INFORMATION
Protective functions – "Installer-on-site mode". The software is equipped with
protective functions, such as room antifrost. The unit automatically runs these
functions when necessary.
During installation or service this behaviour is undesired. Therefore, the protective
functions can be disabled:
▪
At first power-on: The protective functions are disabled by default. After 36 h
they will be automatically enabled.
▪
Afterwards: An installer can manually disable the protective functions by setting
[9.G]: Disable protections=Yes. After his work is done, he can enable the
protective functions by setting [9.G]: Disable protections=No.
# Code
[9.G] N/A
The temperature at which the central water loop fluid freezes depends on the type
and concentration of the anti-freeze added to it. The following setting defines the
freeze up prevention limit temperature of the unit. To allow for temperature
measurement tolerances, the central water loop fluid MUST resist to a lower
temperature than the defined setting.
General rule: the freeze up prevention limit temperature of the unit MUST be 10°C
lower than the minimum temperature of the central water loop fluid entering the
unit.
Example: When the minimum temperature of the central water loop fluid entering
the unit in a certain application is –2°C, then the freeze up prevention limit
temperature of the unit MUST be set to –12°C or lower. Result will be that the
central water loop mixture may NOT freeze above that temperature. To prevent
freezing of the unit, check the type and concentration of the central water loop
fluid carefully.
# Code
[9.N] [A‑04]
Description
Disable protections:
▪ 0: No
▪ 1: Yes
Description
Water loop freezing temperature
▪ 0: 2°C
▪ 1: –2°C
▪ 2: –4°C
▪ 3: –6°C
▪ 4: –9°C
▪ 5: –12°C
▪ 6: –15°C
▪ 7: –18°C
EWSAH/X06D
Daikin Altherma 3 WS
4P675764-1 – 2022.04