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#
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
ETSH/X(B)16P30+50E
Daikin Altherma 3 H HT ECH₂O
4P679468-1B – 2022.09
Description
a
c
b
Description
7.2.4
Configuration wizard: Backup heater
The capacities for the different steps of the backup heater must be
set for the energy metering and/or power consumption control
feature to work properly. When measuring the resistance value of
each heater, you can set the exact heater capacity and this will lead
to more accurate energy data.
Backup heater type
#
Code
[9.3.1]
[E‑03]
▪ 0: None
▪ 2: 3V
▪ 3: 6V
▪ 4: 9W
Voltage
▪ For a 3V and 6V model, this is fixed to 230V, 1ph.
▪ For a 9W model, this is fixed to 400V, 3ph.
#
Code
▪ 0: 230V, 1ph
[9.3.2]
[5‑0D]
▪ 2: 400V, 3ph
Configuration
The backup heater can be configured in different ways. For the 3V
model, the system variably choses from 3 available capacity steps
the adequate capacity for the given operating conditions. For the 6V
and 9W model, it can be chosen to have a 1-step only backup heater
or a backup heater with 2 steps. If 2 steps, the capacity of the
second step depends on this setting. It can also be chosen to have a
higher capacity of the second step in emergency.
#
Code
[9.3.3]
[4‑0A]
▪ 0: Relay 1
▪ 1: Relay 1 / Relay 1+2
▪ 2: Relay 1 / Relay 2
▪ 3: Relay 1 / Relay 2 Emergency Relay
1+2
INFORMATION
Settings [9.3.3] and [9.3.5] are linked. Changing one
setting influences the other. If you change one, check if the
other is still as expected.
INFORMATION
During normal operation, the capacity of the second step of
the backup heater at nominal voltage is equal to
[6‑03]+[6‑04].
INFORMATION
If [4‑0A]=3 and emergency mode is active, the power
usage of the backup heater is maximal and equal to
2×[6‑03]+[6‑04].
INFORMATION
If the storage temperature setpoint is higher than 50°C and
no auxiliary boiler is installed, Daikin recommends NOT to
disable the backup heater second step because it will have
a big impact on the required time for the unit to heat up the
storage tank.
INFORMATION
The capacities displayed in the selection menu for [4-0A]
are only correctly displayed for correct selection of the
capacity steps [6-03] and [6-04].
7 Configuration
Description
Description
Description
Installation manual
31
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