Overview Of All The Electrical Connections; Cable Section And Protection Rating - Fujitsu 112 Installation And Operating Manual

Heat pump split single service 3 phase

2 9 3 Overview of all the electrical connections

The wiring diagram for the hydraulic unit is shown in detail on
Interconnection between the outdoor unit
Phase, neutral, earth, communication
Figure 30 - Overall layout of the electrical connections for a simple installation (1 heating circuit)

2 9 4 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
Model
112
140
160
• Interconnection between the outdoor unit and the hydraulic unit The hydraulic unit is powered by the outdoor
unit by means of a 4 x 1,5 mm² cable (Phase, Neutral, Earth, Communication bus).
• Power supply to the electrical back-ups
The hydraulic unit contains two stages of electrical back-ups installed in a heat exchange cylinder.
Model
WSYK160DA9
• Outdoor sensor, room thermostat and room control unit
For the outdoor sensor, use a 2 x 0,75 mm² cable.
For the room thermostat, use a 2 x 0,5 mm² telephone type cable.
For the room control unit, use a 3 x 0,5 mm² telephone type cable.
Installation and operating manual "1364 - EN"
and the hydraulic unit
cable 4 x 1,5 mm²
Maximal power
5,175 kW
5,865 kW
6,555 kW
Electric back-ups
Power Nominal intensity
9 kW
figure 46, page
Outdoor sensor :
cable 2 x 0,75 mm²
Room thermostat (option) :
câble 2 x 0,5 mm²
Power supply to the electrical back-ups :
(3 phases, earth)
cable 4 x 2,5 mm²
General electrical supply :
(3 phases,neutral, earth)
câble 5 x 2,5 mm²
Electricity supply 400 V - 50 Hz
Cable connection
(3 Phase, Neutral, Earth)
5 x 2,5 mm²
Power supply to the electrical back-ups
Cable connection
(Phase, Neutral, Earth)
13 A 4 x 2,5 mm²
51.
Room control unit (option) :
cable 3 x 0,5 mm²
Electric panel
Curve D circuit breaker
size (A)
20 A
Curve C circuit breaker
size (A)
20 A
- 23 -