Daikin Altherma 3 H MT F, Installer'S Reference Manual

Page: 147 / 276

10 | Configuration
Installer reference guide
147
EPRA08~W1 + ET9W
Daikin Altherma 3 H MT F
4P634887-1 – 2021.03
Setpoint range
To prevent a wrong (i.e. too hot or too cold) leaving water temperature for the
main leaving water temperature zone, limit its temperature range.
NOTICE
In case of a floor heating application it is important to limit the:
▪
maximum leaving water temperature at heating operation according to the
specifications of the floor heating installation.
▪
the minimum leaving water temperature at cooling operation to 18~20°C to
prevent condensation on the floor.
INFORMATION
Only for ETVZ: If the indoor unit is connected to a high temperature emitter system,
and simultaneous demand exists on both emitter zones, and if the high emitter
system leaving water setpoint is chosen bigger than 60°C in the complete operation
range, there can be an increased power consumption.
NOTICE
▪
When adjusting the leaving water temperature ranges, all desired leaving water
temperatures are also adjusted to guarantee they are between the limits.
▪
Always balance between the desired leaving water temperature with the desired
room temperature and/or the capacity (according to the design and selection of
the heat emitters). The desired leaving water temperature is the result of several
settings (preset values, shift values, weather-dependent curves, modulation). As a
result, too high or too low leaving water temperatures could occur which lead to
overtemperatures or capacity shortage. By limiting the leaving water
temperature range to adequate values (depending on the heat emitter), such
situations can be avoided.
Example: In heating mode, leaving water temperatures must be sufficiently higher
than the room temperatures. To avoid that the room cannot heat up as desired,
set the minimum leaving water temperature to 28°C.
# Code Description
Leaving water temperature range for the main leaving water temperature zone (=
the leaving water temperature zone with the lowest leaving water temperature in
heating operation and the highest leaving water temperature in cooling
operation)
[2.8.1] [9-01] Heating minimum :
▪ 15°C~37°C
[2.8.2] [9-00] Heating maximum :
▪ [2‑0C]=2 (emitter type main zone = radiator)
37°C~65°C
▪ Else: 37°C~55°C