9
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Electrical installation
Installer reference guide
124
ERGA04~V3A+V37 + EHSH/X(B)04+08P30+50EF
Daikin Altherma 3 R ECH₂O
4P678716-1 – 2022.01
A
B
X1M
1 2 3
3
4
4
5 6
c
X 5M
1
3x
b
a
S1S
c
3
4
a
1 2 3
230
, 6.3 A
V AC
1N~, 50 Hz,
b
L
N
F2B
1
3
2
4
I
I
Q DI
2
6
5
3x
A
B
a
Interconnection cable
b
Power supply indoor unit
c
Preferential power supply contact
3
Fix the cable with cable ties to the cable tie mountings. General information,
see
"9.3.1 To connect the electrical wiring to the indoor unit"
9.3.3 To connect the backup heater power supply
Backup heater type
Power supply
Wires
EKECBU*3V
1N~ 230 V
(2+GND)×2.5 mm²
(minimum)
EKECBU*6V
1N~ 230 V
(2+GND)×4 mm²
(minimum); ONLY
flexible cords
EKECBU*9W
3N~ 400 V
(4+GND)×2.5 mm²
(minimum)
[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.
