Daikin EPRA10EAV3, Installer'S Reference Manual

Page: 205 / 304

10 | Configuration
Installer reference guide
205
EPRA08~W1 + ETSH/X(B)12P30+50EF
Daikin Altherma 3 H MT ECH₂O
4P663478-1B – 2022.07
Backup heater type
# Code Description
[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 Description
[9.3.2] [5‑0D] ▪ 0: 230V, 1ph
▪ 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 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
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].