Daikin EPRA16DAW1 Installer's Reference Manual page 181

Backup heater
EPRA14~18DAV3+W1 + ETBH/X16DA6V+9W
Daikin Altherma 3 H HT W
4P587501-1A – 2020.01
Besides the type of backup heater, the voltage, configuration and capacity must be
set on the user interface.
The capacities for the different steps of the backup heater must be set for the
energy metering and/or power consumption 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
The backup heater is adapted to be connected to most common European
electricity grids. The type of backup heater can be viewed but not changed.
# Code
[9.3.1] [E‑03]
Voltage
▪ For a 6V model, this can be set to:
- 230V, 1ph
- 230V, 3ph
▪ For a 9W model, this is fixed to 400V, 3ph.
# Code
[9.3.2] [5‑0D]
Configuration
The backup heater can be configured in different ways. 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]
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].
Description
▪ 3: 6V
▪ 4: 9W
Description
▪ 0: 230V, 1ph
▪ 1: 230V, 3ph
▪ 2: 400V, 3ph
Description
▪ 0: Relay 1
▪ 1: Relay 1 / Relay 1+2
▪ 2: Relay 1 / Relay 2
▪ 3: Relay 1 / Relay 2 Emergency Relay 1+2
9 Configuration
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Installer reference guide
181