Daikin Altherma 3 H HT W EPRA14DAV3 Installer's Reference Manual page 113

EPRA14~18DAV3+W1 + ETBH/X16EF6V+9W
Daikin Altherma 3 H HT W
4P644736-1 – 2021.02
[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
If the indoor unit has a tank with a built‑in electrical booster heater, use a dedicated
power circuit for the backup heater and booster heater. NEVER use a power circuit
shared by another appliance. This power circuit must be protected with the required
safety devices according to 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 Backup
type heater
capacity
*6V
*9W
(a)
6V
(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
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
equal to Z .
max
(d)
6T1
Connect the backup heater power supply as follows:
Power supply
(a)
2 kW 1N~ 230 V
(a)
4 kW 1N~ 230 V
(a)
6 kW 1N~ 230 V
(d)
2 kW 3~ 230 V
(d)
4 kW 3~ 230 V
(d)
6 kW 3~ 230 V
3 kW 3N~ 400 V
6 kW 3N~ 400 V
9 kW 3N~ 400 V
is less than or equal to Z
sys max
9 Electrical installation
|
Maximum
running current
9 A
(b)(c)
17 A
(b)(c)
26 A
5 A
10 A
15 A
4 A
9 A
13 A
at the interface point between the user's
sys
Installer reference guide
Z
max
—
0.22 Ω
0.22 Ω
—
—
—
—
—
—
less than or
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