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Electrical installation
Installer and user reference guide
132
RYMA5+RXYA8~20A7Y1B
VRV 5 heat pump
4P749918-1 – 2023.12
20.1.6 Specifications of standard wiring components
For standard combinations
Component
Single outdoor units
RYMA5 RXYA8 RXYA10 RXYA12 RXYA14 RXYA16 RXYA18 RXYA20
Power supply cable
MCA
(a)
15 A
16.1 A
22 A
24 A
27 A
31 A
35 A
42 A
Voltage
380-415 V
Phase
3N~
Frequency
50 Hz
Wire size
5 core cable
Must comply with national wiring regulation.
Wire size based on the current, but not less than:
2.5 mm²
4 mm²
6 mm²
10 mm²
Interconnection
cable
Voltage
220-240 V
Wire size
Only use harmonised wire providing double insulation and suitable for
applicable voltage.
2-core cable
0.75-1.5 mm²
Recommended field fuse
20 A
25 A
32 A
32 A
40 A
50 A
Earth leakage circuit breaker/ residual
current circuit breaker
Must comply with national wiring regulation.
(a)
MCA=Minimum circuit ampacity. Stated values are maximum values.
Component
Multi outdoor units
RXYA10
RXYA13
RXYA16
RXYA18
RXYA20
Power supply cable
MCA
(a)
30 A
31.1 A
32.2 A
38.1 A
40.1 A
Wire size
5 core cable
Must comply with national wiring regulation.
Wire size based on the current, but not less than:
6 mm²
10 mm²
Recommended field fuse
40 A
50 A
(a)
MCA=Minimum circuit ampacity. Stated values are maximum values.
Please use the tables above to specify the requirements for the power supply
wiring.
For non-standard combinations
Calculate the recommended fuse capacity.
Formula
Calculate, by adding the minimum circuit amps of each used unit
(according to the table above), multiply the result by
1.1
and
select the next higher recommended fuse capacity.
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