2 9 3
Overview of all the electrical connections
The wiring diagram for the hydraulic unit is shown in detail on
figure 46, page 51
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
Electricity supply 400 V - 50 Hz
Model
Maximal power
Cable connection
(3 Phase, Neutral, Earth)
Curve D circuit breaker size
5865 W
5 x 2,5 mm²
20 A
6555 W
7245 W
• 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.
Electric back-ups
Power supply to the electrical back-ups
Power
Nominal intensity
Cable connection
(3 Phase, Earth)
Curve C circuit breaker size
9 kW
13 A
4 x 2,5 mm²
20 A
•
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.
Figure 30 -
Overall layout of the electrical connections for a simple installation (1 heating circuit)
Installation and operating manual "1364 - EN"
- 25 -
Split system (3-phase)
WS*K160DA9
112
140
160
Outdoor sensor :
cable 2 x 0,75 mm²
Room thermostat (option) :
cable 2 x 0,5 mm²
Electric panel
Power supply to the electrical back-ups
(See table)
General electrical supply :
(See table)
Interconnection between the outdoor unit
and the hydraulic unit
Phase, neutral, earth, communication
cable 4 x 1,5 mm²
Room control unit (option) :
cable 3 x 0,5 mm²
