To Connect The Backup Heater Power Supply - Daikin ERGA08DAV3 Installer's Reference Manual

7.9.9 To connect the backup heater power
supply
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 Backup
heater type heater supply
capacity
*6V 2 kW 1N~ 230 V
4 kW 1N~ 230 V
6 kW 1N~ 230 V
2 kW 3~ 230 V
4 kW 3~ 230 V
6 kW 3~ 230 V
*9W 3 kW 3N~ 400 V
6 kW 3N~ 400 V
9 kW 3N~ 400 V
(a) 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.).
(b) 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
less than or equal to Z
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
Z .
max
(c) (6V)
(d) (6T1)
Connect the backup heater power supply as follows:
a
X6M
F1B
b
Q1DI
a Factory-mounted cable connected to the backup heater
contactor inside the switch box (K5M for *6V and *9W
models)
b Field wiring (see table below)
ERGA04~08DAV3(A) + EHVZ04+08S18+23DA +
EHVZ04+08S18+23DJ
Daikin Altherma 3 R F
4P495249-1B – 2019.06
Power Maximum Z
max
running
current
(c)
9 A —
(c) (a)(b)
17 A 0.22 Ω
(c) (a)(b)
26 A 0.22 Ω
(d)
5 A —
(d)
10 A —
(d)
15 A —
4 A —
9 A —
13 A —
sys
at the interface point between the
max
less than or equal to
sys
Model (power
supply)
*6V (6V: 1N~ 230 V)
*6V (6T1: 3~ 230 V)
is
*9W (3N~ 400 V)
F1B Overcurrent fuse (field supply). Recommended fuse for *6V
and *9W models: 4‑pole; 20 A; curve 400 V; tripping class
C.
K1M Contactor (in the lower switch box)
K5M Safety contactor (in the lower switch box)
Q1DI Earth leakage circuit breaker (field supply)
SWB Switch box
X6M Terminal (field supply)
7 Installation
Connections to backup heater power
supply
2 4 6 14
K5M
1 3 5 13
SWB
X6M
1 3 5 7
F1B
I I I I
2 4 6 8
Q1DI
1N~, 50 Hz
L N
230 V AC
2 4 6 14
K5M
1 3 5 13
SWB
X6M
1 3 5 7
F1B
I I I I
2 4 6 8
Q1DI
3~, 50 Hz
L1 L2 L3
230 V AC
2 4 6 14
K5M
1 3 5 13
SWB
X6M
1 3 5 7
F1B
I I I I
2 4 6 8
Q1DI
3N~, 50 Hz
L1 L2 L3 N
400 V AC
Installer reference guide
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