Daikin SV1A25AJV1B - Page 90

16 | Electrical installation
Installer and user reference guide
90
SV1A25AJV1B+SV4~8A14AJV1B
VRV 5 safety valve unit
4P749917-1 – 2023.09
Component Units
SV1A SV4A SV6A SV8A
Interconnection
wiring
Voltage 220-240V
Wire size Only use harmonised wire providing
double insulation and suitable for the
applicable voltage.
2-core cable
0.75mm²-1.5mm²
Recommended field fuse 6A
Residual current device Must comply with national wiring
regulation.
(a)
MCA=Minimum circuit ampacity. Stated values are maximum values.
Power supply wiring
The power supply wiring must be protected with the required safety devices, i.e. a
main switch, a slow blow fuse on each phase and an earth leakage protector in
accordance with the applicable legislation.
Selection and sizing of the wiring should be done in accordance with the applicable
legislation based on the information mentioned in the table above.
Interconnection wiring
The interconnection wiring outside the unit should be wrapped and routed
together with the field piping. See "16.3To finish the electrical wiring"[496] for
more information.
Selection and sizing of the wiring should be done in accordance with the applicable
legislation based on the information mentioned in the table above.
Interconnection wiring specification and limits
(a)
Maximum wiring length between SV unit and indoor units 1000m
Maximum wiring length between SV unit and outdoor unit 1000m
Maximum wiring length between SV units 1000m
Total wiring length 2000m
(a)
If the total interconnection wiring exceeds these limits, communication errors might occur.
Up to 16 branches are possible for unit-unit cabling. No secondary branching are
allowed after any interconnection wire branching.