To Connect The Backup Heater Power Supply; External Backup Heater Kit - Daikin Altherma 3 M Installation Manual

6 Electrical installation
6.3.3 To connect the backup heater power
supply
This topic is only applicable in case of models with integrated
backup heater. For instructions in case of an external backup heater
kit, see "6.3.4 External backup heater
Backup heater Power supply
type
*3V 1N~ 230 V (6V)
[9.3] Backup heater
WARNING
The backup heater MUST have a dedicated power supply
and MUST be protected by the safety devices required by
the applicable legislation.
CAUTION
To guarantee the unit is completely earthed, always
connect the backup heater power supply and the earth
cable.
Connect the power supply of the backup heater as follows:
1 Open the service cover. See
unit" [ 4 10].
2 Connect the power supply cable (including earth) to the
appropriate terminals as shown in the illustration below.
F1B Overcurrent fuse (field supply). Recommended fuse:
2‑pole; 16 A; curve 400 V; tripping class C.
Q1DI Earth leakage circuit breaker (field supply)
X6M Terminal (field supply)
X9M
3 Fix the cable with cable ties to the cable tie mountings.
Installation manual
18
kit" [ 4 18].
Wires
2+GND
"4.3.1 To open the outdoor
X6M
1 3
F1B
I I
2 4
Q1DI
L N
1N~, 50 Hz
230 V AC
6.3.4

External backup heater kit

For models without integrated backup heater, you can install the
external backup heater kit (EKLBUHCB6W1).
If you do so, then under certain conditions you also need to install a
bypass valve kit (EKMBHBP1).
See:
▪ "To connect the backup heater
necessity" [ 4 20]
▪ "Bypass valve kit
▪ "To connect the bypass valve
To connect the backup heater kit
The installation of the external backup heater kit is described in the
installation manual of the kit. However, certain parts of it are
superseded by the information described here. It concerns the
following:
▪ To connect the backup heater kit power supply
▪ To connect the backup heater kit to the outdoor unit
Wires: See installation manual of the backup heater kit
[9.3] Backup heater
To connect the backup heater kit power supply
CAUTION
To guarantee the unit is completely earthed, always
connect the backup heater power supply and the earth
cable.
WARNING
The backup heater MUST have a dedicated power supply
and MUST be protected by the safety devices required by
the applicable legislation.
Depending on the configuration (wiring on X14M, and settings in
[9.3] Backup heater), the backup heater capacity can vary. Make
sure that the power supply is in accordance with the backup heater
capacity, as listed in the table below.
Backup Backup
heater type heater supply
capacity
*6W 3 kW 1N~ 230 V
6 kW 1N~ 230 V
6 kW 3N~ 400 V
9 kW 3N~ 400 V
(a) This equipment complies with EN/IEC 61000‑3‑11 (European/
International Technical Standard setting the limits for voltage
changes, voltage fluctuations and flicker in public low-voltage
supply systems for equipment with rated current ≤75 A) provided
that the system impedance Z
interface point between the user's supply and the public system. It
is the responsibility of the installer or user of the equipment to
ensure, by consultation with the distribution network operator if
necessary, that the equipment is connected only to a supply with
a system impedance Z less than or equal to Z
sys
(b)
Electrical equipment complying with EN/IEC 61000-3-12
(European/International Technical Standard setting the limits for
harmonic currents produced by equipment connected to public
low-voltage systems with input current >16 A and ≤75 A per
phase).
1 Connect the backup heater power supply. A 4‑pole fuse is used
for F1B.
2 If required, modify the connection on terminal X14M.
kit" [ 4 18]
kit" [ 4 20]
Power Maximum Z (Ω)
max
running
current
13 A —
(a)(b)
26 A —
8.6 A —
13 A —
is less than or equal to Z at the
sys max
.
max
EBLA09~16DA + EDLA09~16DA
Daikin Altherma 3 M
4P620239-1 – 2020.06