Ariston NIMBUS PLUS S NET - Internal Unit Electrical Connections; Electrical supply and connection details

64 / GB
Power supplies of the indoor and the outdoor units are to be respectively connected to a Residual Current operated Circuit-Breaker
(RCCB) with threshold of 30mA. For inverter driven units (outdoor unit), It is advisable the use of type B residual current device for 3Ph
power supplies and type B or F for 1Ph power supplies (depending on the electrical system to which it is connected). For the units
without inverter, (indoor units) a type A Residual current device is sucient. The type of connection must in any case be carried out in
a workmanlike manner by qualified personnel in compliance with the national regulations in force.
INTERNAL UNIT
WH 40-50 S WH 70 S WH 90- 110 S
Electrical supply V - ph - Hz 230 - 1 -50 230 - 1 -50 400 - 3 -50 230 - 1 -50 400 - 3 -50
Admitted voltages field V 196 ÷ 253 196 ÷ 253 340 ÷ 440 196 ÷ 253 340 ÷ 440
Rated power input kW 4 4 4 6 6
Max current / phase A 19.1 19.1 9.6 30 9.6
Thermal cutout circuit breaker
A 25 - C type 25 - C type
12 - C type
13 - C type
32 - C type
12 - C type
13 - C type
Dierential circuit breaker size (RCCB) mA 30 - A type
Power supply cable
Reference
Min. cables section 3G6 3G6 5G2.5 3G6 5G2.5
Max diameter [mm] 18 18 17 18 17
Recommended
cables section
3G6 3G6 5G4 3G6 5G4
Max diameter [mm] 18 18 19.9 18 19.9
Wiring signal EDF, AFR, PV mm
2
H05RN-F 2 x 0,75 mm
2
MODBUS cable mm
2
H05RN-F 3 x 0,75 mm
2
Note: To avoid interference problems in the connection between the MODBUS cable from the internal unit to the external unit, use a
shielded cable.