6 Electrical installation
Installation manual
24
EWAA004~008D + EWYA004~008D
Packaged air-cooled water chillers
and packaged air to water heat pumps
4P688014-1D – 2022.10
180°
1 2 3 4
X10M
4
Fix the cables with cable ties to the cable tie mountings. If
necessary, bundle excessive cable length with a cable tie.
6.3.12
External backup heater kit
For reversible models, 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 kit"
▪
▪
"To connect the bypass valve kit"
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superseded by the information described here.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
heater type
Backup
heater
capacity
Power
supply
Maximum
running
current
Z
max
(Ω)
*6W
3 kW
1N~ 230 V
13 A
—
6 kW
1N~ 230 V
26 A
(a)(b)
—
6 kW
3N~ 400 V
8.6 A
—
9 kW
3N~ 400 V
13 A
—
(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
sys
is less than or equal to Z
max
at the
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
sys
less than or equal to Z
max
.
(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.
Capacity –
Power supply
F1B
X14M
3 kW 1N~ 230 V
6 kW 1N~ 230 V
L
L
N
N
F1B
1N~ , 50 Hz
230 V AC
F1B.2+4
F1B.6+8
L
N
Q3DI
1 2 3 4 5 6
X14M
Summary of Contents for EWAA008D2V3P-H
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