Configuration Wizard: Backup Heater; Configuration Wizard: Main Zone - Daikin Altherma 3 H MT ECH2O Series Installation Manual

7 Configuration
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].
Installation manual
30
Description
Description
Description
INFORMATION
Energy data calculations of the unit will only be correct for
settings of [6-03] and [6-04] which fit the actually installed
backup heater capacity. Example: For a backup heater
with nominal capacity of 6 kW, the first step (2kW) and the
second step (4kW) correctly sum up to 6 kW.
Capacity step 1
# Code
[9.3.4] [6‑03] ▪ The capacity of the first step of the
backup heater at nominal voltage.
Additional capacity step 2
# Code
[9.3.5] [6‑04] ▪ The capacity difference between the
second and first step of the backup
heater at nominal voltage. Nominal
value depends on backup heater
configuration.
Maximum capacity
# Code
[9.3.9] [4‑07] ▪ Maximum capacity that should be
delivered by the backup heater.
▪ Range: 1 kW~3 kW, Step 1 kW
7.2.5

Configuration wizard: Main zone

The most important settings for the main leaving water zone can be
set here.
Emitter type
Heating up or cooling down the main zone can take longer. This
depends on:
▪ The water volume of the system
▪ The heater emitter type of the main zone
The setting Emitter type can compensate for a slow or a quick
heating/cooling system during the heat up/cool down cycle. In room
thermostat control, Emitter
modulation of the desired leaving water temperature, and the
possibility for usage of the automatic cooling/heating changeover
based on the indoor ambient temperature.
It is important to set Emitter type correctly and in accordance with
your system layout. The target delta T for the main zone depends on
it.
# Code
[2.7] [2‑0C] ▪ 0: Underfloor heating
▪ 1: Fancoil unit
▪ 2: Radiator
The setting of the emitter type has an influence on the space heating
setpoint range and the target delta T in heating as follows:
Description Space heating
setpoint range
0: Underfloor
Maximum 55°C
heating
1: Fancoil unit Maximum 55°C
2: Radiator Maximum 70°C
Description
Description
Description
type influences the maximum
Description
Target delta T in
heating
Variable
Variable
Fixed 10°C
ETSH/X(B)12P30+50EF
Daikin Altherma 3 H MT ECH₂O
4P663479-1 – 2021.07