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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)
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
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
(d)
6T1
Connect the backup heater power supply as follows:
a
a
Factory-mounted cable connected to the contactor of the
backup heater, inside the switch box (K5M)
b
Field wiring (see table below)
ETBH/X16E
Daikin Altherma 3 H HT W
4P644727-1B – 2022.03
Power
Maximum
Z
max
running
current
(a)
9 A
—
(a)
(b)(c)
17 A
0.22 Ω
(a)
(b)(c)
26 A
0.22 Ω
(d)
5 A
—
(d)
10 A
—
(d)
15 A
—
4 A
—
9 A
—
13 A
—
is less than or equal to Z
at the
sys
max
.
max
b
X6M
F1B
Q1DI
6 Electrical installation
Model (power
Connections to backup heater power
supply)
*6V (6V3: 1N~ 230 V)
SWB
F1B
1N~, 50 Hz
230 V AC
*6V (6T1: 3~ 230 V)
K5M
SWB
F1B
Q1DI
3~, 50 Hz
230 V AC
*9W (3N~ 400 V)
K5M
SWB
F1B
Q1DI
3N~, 50 Hz
400 V AC
F1B
Overcurrent fuse (field supply). Recommended fuse:
4‑pole; 20 A; curve 400 V; tripping class C.
K5M
Safety contactor (in the switch box)
Q1DI
Earth leakage circuit breaker (field supply)
SWB
Switch box
X6M
Terminal (field supply)
supply
2
4
6
14
K5M
1
3
5
13
X6M
1
3
5
7
I
I
I
I
2
4
6
8
Q1DI
L
N
2
4
6
14
1
3
5
13
X6M
1
3
5
7
I
I
I
I
2
4
6
8
L1 L2 L3
2
4
6
14
1
3
5
13
X6M
1
3
5
7
I
I
I
I
2
4
6
8
L1 L2 L3
N
Installation manual
15
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