6 Electrical installation
Installation manual
11
ERRA08~12E
Daikin Altherma 3 R MT
4P708481-1 – 2023.02
(a)
MCA=Minimum circuit ampacity. Stated values are maximum
values (see electrical data of combination with indoor units for
exact values).
6.3 Guidelines when connecting the
electrical wiring
Tightening torques
Outdoor unit:
Item Tightening torque (N•m)
X1M 1.47 ±10%
X2M
M4 (earth)
6.4 To connect the electrical wiring to
the outdoor unit
NOTICE
▪ Follow the wiring diagram (delivered with the unit,
located at the inside of the service cover).
▪ Make sure the electrical wiring does NOT obstruct
proper reattachment of the service cover.
1 Open the service cover. See "4.3 To open the outdoor
unit"[47].
2 Insert the cables at the back of the unit, and route them through
the factory-mounted cable sleeves into the switch box.
a1+a2 Power supply cable (field supply)
b1+b2 Interconnection cable (field supply)
c1+c2 No use
d Cable sleeves (factory-mounted)
3 Inside the switch box, connect the wires to the appropriate
terminals, and fix the cables with cable ties. See:
▪ "6.4.1In case of V3 models"[411]
▪ "6.4.2In case of W1 models"[412]
6.4.1 In case of V3 models
1 Power supply cable:
▪ Route the cable through the frame.
▪ Connect the wires to the terminal block.
▪ Fix the cable with a cable tie.
Wires: 1N+GND
Maximum running current: Refer to name plate on unit.
—
Q1DI
1N~,
50 Hz,
230 V AC
F1B
1
3
2
4
II
BRN
BLU
YLW/GRN
b
a
L
N
a Power supply cable (field supply)
b Field wiring
F1B Overcurrent fuse (field supply). Recommended fuse: 2
pole, 32A fuse, C curve.
Q1DI Earth leakage circuit breaker (30mA)(field supply)
2 Interconnection cable (indoor↔outdoor):
▪ Route the cable through the frame.
▪ Connect the wires to the terminal block (make sure the
numbers match with the numbers on the indoor unit) and the
earth screw.
▪ Fix the cable with a cable tie.
Wires: (3+GND)×1.5mm²
—
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