9
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Electrical installation
Installer reference guide
127
ERGA04~V3A+V37 + EHSH/X(B)04+08P30+50EF
Daikin Altherma 3 R ECH₂O
4P678716-1A – 2022.07
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"
123].
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.