Overview Of All The Electrical Connections; Cable Section And Protection Rating - Fujitsu Waterstage WOYG112LCTA Maintenance Document

Air to Water Heat Pump (Split integrated DHW type)
5 .1 .3

Overview of all the electrical connections

The wiring diagram for the hydraulic unit is shown in detail on
Interconnection between
the outdoor unit and the hydraulic unit :
Interconnection between
Phase, Neutral, Earth, Communication bus
the outdoor unit and the hydraulic unit :
Phase, Neutral, Earth, Communication bus
figure 33 - 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
excellia duo 11 Single phase High Power 11 single phase
excellia duo 14 Single phase High Power 14 single phase
Heat pump (3-phase)
Model
excellia duo 11 3-phase High Power 11 3-phase
High Power 14 3-phase
excellia duo 14 3-phase
High Power 16 3-phase excellia duo 16 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).
• Electricity supply DHW: The DHW section is powered directly via a 3 x 1,5 mm² cable (phase, neutral, earth).
Protection by circuit breaker (16 A, curve C).
• 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 duo Single phase
excellia duo 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 "1768 - EN"
Outdoor sensor
Outdoor sensor
Cable 2 x 0,75 mm²
Cable 2 x 0,75 mm²
Cable 4 x 1,5 mm²
Cable 4 x 1,5 mm²
General power supply (Phase, Neutral, Earth)
General electrical supply
(depending on heat pump power)
(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 53, page 66
Room control unit T78 (option)
Wireless remote control (option)
Room thermostat T58 (option)
Wireless room thermostat (option)
Room control unit T75 (option)
Room thermostat T55 (option)
DHW power supply
DHW power supply
(Phase, Neutral, Earth)
(Phase, Neutral, Earth)
Cable 3 x 1,5 mm²
Cable 3 x 1,5 mm²
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
Remote control (option)
Cable 3 x 0,5 mm²
Cable 3 x 0,5 mm²
Room thermostat (option)
Cable 2 x 0,5 mm²
Cable 2 x 0,5 mm²
Power supply to the electrical back-ups
Power supply to the electrical back-ups
(See table below)
(Phase, Neutral, Earth) Cable 3 x 6 mm²
Electric panel
Electric panel
Curve D circuit breaker size
32 A
Curve D circuit breaker size
20 A
Curve C circuit
breaker size
3 x 6 mm²
4 x 2,5 mm²
or
or
or
or
or
or
32 A
20 A
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