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Air to Water Heat Pump split system
5.1.3 Overview of all the electrical connections
The wiring diagram for the hydraulic unit is shown in detail on
Cable 2 x 0.75 mm²
Interconnection between
the outdoor unit and the hydraulic unit :
Phase, Neutral, Earth, Communication bus
Cable 4 x 1.5 mm²
figure 28 - Overall layout of the electrical connections for a simple installation (1 heating circuit)
5.2
Cable section and protection rating
The cable sections are given for information purposes only and do not exempt the installer from checking that these
sections correspond to the requirements and comply with the prevailing standards.
• Power supply to outdoor unit
Heat pump (single phase)
Model
High Power 112 single phase
excellia 11 single phase
High Power 140 single phase
excellia 14 single phase
Heat pump (3-phase)
Model
excellia 11 3-phase
High Power 112 3-phase
High Power 140 3-phase
excellia 14 3-phase
excellia 16 3-phase
High Power 160 3-phase
• Interconnection between the outdoor unit and the hydraulic unit
The hydraulic unit is powered by the outdoor unit by means of a cable with 4 x 1.5 mm²
(phase, neutral, earth, communication bus).
• Power supply to the electrical back-ups (option)
The hydraulic unit contains two stages of electrical back-ups installed in a heat exchange tank.
Heat pump (HP)
Model
High Power single phase
excellia single phase
excellia 3-phase
High Power 3-phase
" Ensure that the general electrical power supply has been cut off before starting any repair work.
Installation and operating manual "1775 - EN"
Outdoor sensor
General electrical supply
(See table below)
Maxi. power absorbed
5060 W
5750 W
Maxi. power absorbed
5865 W
6555 W
7245 W
Electrical back-ups
Power
2 x 3 kW
9 kW
figure 46, page 63
Wireless room thermostat (option)
OK
ESC
Power supply to the electrical back-ups (option)
(See table below)
Electricity supply 230 V - 50 Hz
Cable connection
(phase, neutral, earth)
3 x 6 mm²
Electricity supply 400 V - 50 Hz
Cable connection
(3 phases, neutral, earth)
5 x 2.5 mm²
Power supply to the electrical back-ups
Nominal current
Cable connection
26 1 A
3 x 13 A
Wireless remote control (option)
Remote control (option)
Cable 3 x 0.5 mm²
Room thermostat (option)
Cable 2 x 0.5 mm²
Electric panel
Curve C circuit breaker size
32 A
Curve C circuit breaker size
20 A
Curve C circuit
breaker size
3 x 6 mm²
4 x 2.5 mm²
or
or
or
32 A
20 A
- 31 -
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