Daikin EWAA008D2V3P-H Installation Manual page 29

▪ When Emergency is set to auto SH reduced/DHW off (or auto
(1)
SH reduced/DHW on) and a heat pump failure occurs, space
heating is reduced.
Similarly as in Manual mode, the unit can take the full load with
the backup heater if the
Malfunctioning main menu screen.
To keep energy consumption low, we recommend to set Emergency
to auto SH reduced/DHW off if the house is unattended for longer
periods.
# Code
[9.5.1] [4-06] ▪ 0: Manual
▪ 1: Automatic
▪ 2: auto SH reduced/DHW on
Do NOT use.
▪ 3: auto SH reduced/DHW off
▪ 4: auto SH normal/DHW off
Do NOT use.
(a) These settings are not needed because there is no domestic hot
water.
INFORMATION
The auto emergency setting can be set in the menu
structure of the user interface only.
INFORMATION
If a heat pump failure occurs and Emergency is set to
Manual, the room frost protection function, the underfloor
heating screed dryout function, and the water pipe
antifreeze function will remain active even if the user does
NOT confirm emergency operation.
Number of zones
The system can supply leaving water to up to 2 water temperature
zones. During configuration, the number of water zones must be set.
INFORMATION
Mixing station. If your system layout contains 2 LWT
zones, you need to install a mixing station in front of the
main LWT zone.
# Code
▪ 0: Single zone
[4.4] [7‑02]
Only one leaving water temperature
zone:
a Main LWT zone
(1)
auto SH reduced/DHW on has the same effect as auto SH reduced/DHW off, but should NOT be used because there is no domestic hot
water.
EWAA004~008D + EWYA004~008D
Packaged air-cooled water chillers
and packaged air to water heat pumps
4P688014-1D – 2022.10
user activates this via the
Description
(a)
(a)
Description
a
# Code
[4.4] [7‑02] ▪ 1: Dual zone
Two leaving water temperature zones.
The main leaving water temperature
zone consists of the higher load heat
emitters and a mixing station to
achieve the desired leaving water
temperature. In heating:
a Additional LWT zone: Highest
temperature
b Main LWT zone: Lowest temperature
c Mixing station
NOTICE
NOT configuring the system in the following way can cause
damage to the heat emitters. If there are 2 zones, it is
important that in heating:
▪ the zone with the lowest water temperature is
configured as the main zone, and
▪ the zone with the highest water temperature is
configured as the additional zone.
NOTICE
If there are 2 zones and the emitter types are wrongly
configured, water of high temperature can be sent towards
a low temperature emitter (underfloor heating). To avoid
this:
▪ Install an aquastat/thermostatic valve to avoid too high
temperatures towards a low temperature emitter.
▪ Make sure you set the emitter types for the main zone
[2.7] and for the additional zone [3.7] correctly in
accordance with the connected emitter.
NOTICE
A differential pressure bypass valve can be integrated in
the system. Keep in mind that this valve might not be
shown on the illustrations.
Glycol Filled system
This setting gives the installer the possibility to indicate whether the
system is filled with glycol or water. This is important in case glycol is
used to protect the water circuit against freezing. If NOT set
correctly, the liquid in the piping can freeze.
# Code
N/A [E-0D] Glycol Filled system: Is the system
filled with glycol?
▪ 0: No
▪ 1: Yes
8 Configuration
Description
a
c
b
Description
Installation manual
29