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Electrical installation
Installer reference guide
126
ERRA08~12E + ELVH/23E
Daikin Altherma 3 R MT F
4P708474-1 – 2023.05
5
Normal kWh rate power supply (to power the indoor unit PCB in
the event of power supply interruption of the preferential kWh
rate power supply)
9.2 Connections to the outdoor unit
Item
Description
Power supply cable
"9.2.2 To connect the electrical wiring to the
127].
Interconnection cable
Drain tube heater cable
Connection for power
saving function (only for V3
models)
Air thermistor cable
"9.2.3 To reposition the air thermistor on the
131].
9.2.1 Specifications of standard wiring components
Component
V3
W1
Power supply
cable
MCA
(a)
29.5 A
9.8 A
Voltage
220-240 V
380-415 V
Phase
1~
3N~
Frequency
50 Hz
Wire size
MUST comply with national wiring
regulation.
3 or 5-core cable
Wire size based on the current, but not less
than 2.5 mm
2
Interconnection
cable (indoor ↔
outdoor)
Voltage
220-240 V
Wire size
Only use harmonised wire providing double
insulation and suitable for applicable
voltage.
4-core cable
Minimum 1.5 mm
2
Recommended field fuse
32 A, C curve
16 A or 20 A, C curve
Earth leakage circuit breaker /
residual current device
30 mA – MUST comply with national wiring
regulation
(a)
MCA=Minimum circuit ampacity. Stated values are maximum values (see electrical data of
combination with indoor units for exact values).