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Cable dimensions and protection rating
These cable dimensions are provided for information purposes only and do not exempt the installer from checking
that these dimensions match requirements and comply with current standards.
• Outdoor Unit Power Supply
Heat Pump (HP)
Electricity supply 230 V - 50 Hz
Model
Max. power
consumption
Connection cable
*
(phase, neutral, earth)
Circuit breaker
C curve
5
2910 W
3 G 1.5 mm²
16 A
6
3030 W
8
4190 W
3 G 2.5 mm²
20 A
• Interconnection between outdoor unit and hydraulic unit
The hydraulic unit is powered by the outdoor unit by means of a 4 G 1.5 mm² cable*
(phase, neutral, earth, communication bus).
• DHW power supply
The DHW section is powered directly via a 3 G 1.5 mm² cable* (phase, neutral, earth).
Protection by circuit breaker (16 A, C curve).
• Electrical backup power supply
The hydraulic unit contains a electrical backup circuit (and a second optional) installed in the storage tank.
Heat pump
Electrical backups
Electrical backup power supply
Model
Power
Nominal current
Connection cable
*
(phase, neutral, earth)
Circuit breaker
C curve
5, 6 and 8
3 kW
13 A
3 G 1.5 mm²
16 A
5, 6 and 8
with 6 kW Backup
Relay Kit
2 x 3 kW
26.1 A
3 G 6 mm²
32 A
* type cable 60245 IEC 57 or 60245 IEC 88.
Alfea Extensa A.I. R32 / INSTALLATION / 2114 - EN
