Daikin Altherma 3 H HT EPRA14DAW1, Installer'S Reference Manual

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9 | Configuration
Installer reference guide
178
EPRA14~W1 + ETVH/9W(G)
Daikin Altherma 3 H HT F
4P587502-1A – 2020.01
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 Description
[9.3.1] [E‑03] ▪ 3: 6V
▪ 4: 9W
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 Description
[9.3.2] [5‑0D] ▪ 0: 230V, 1ph
▪ 1: 230V, 3ph
▪ 2: 400V, 3ph
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 Description
[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
Only for systems with integrated domestic hot water tank: If the storage
temperature setpoint is higher than 50°C, 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 domestic hot water tank.