Daikin ETVZ16E6V7, Installer'S Reference Manual

Page: 106 / 284

9 | Electrical installation
Installer reference guide
106
EPRA14~18D + ET23E
Daikin Altherma 3 H HT F
4P644739-1A – 2022.03
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.
The backup heater capacity can vary, depending on the indoor unit model. 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
*6V 2 kW 1N~ 230 V
(a)
9 A —
4 kW 1N~ 230 V
(a)
17 A
(b)(c)
0.22 Ω
6 kW 1N~ 230 V
(a)
26 A
(b)(c)
0.22 Ω
2 kW 3~ 230 V
(d)
5 A —
4 kW 3~ 230 V
(d)
10 A —
6 kW 3~ 230 V
(d)
15 A —
*9W 3 kW 3N~ 400 V 4 A —
6 kW 3N~ 400 V 9 A —
9 kW 3N~ 400 V 13 A —
(a)
6V3
(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).
(c)
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
.
(d)
6T1
Connect the backup heater power supply as follows:
X6M
F1B
Q1DI
a
b
a Factory-mounted cable connected to the contactor of the backup heater, inside the
switch box (K5M)
b Field wiring (see table below)