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Electrical installation
Installer and user reference guide
81
BS4~12A14AJV1B
VRV 5 branch selector unit
4P695527-1 – 2022.02
WARNING
If the supply cord is damaged, it MUST be replaced by the manufacturer, its service
agent or similarly qualified persons in order to avoid a hazard.
WARNING
▪
If the power supply has a missing or wrong N-phase, equipment might break
down.
▪
Establish proper earthing. Do NOT earth the unit to a utility pipe, surge absorber,
or telephone earth. Incomplete earthing may cause electrical shocks.
▪
Install the required fuses or circuit breakers.
▪
Secure the electrical wiring with cable ties so that the cables do NOT come into
contact with sharp edges or piping, particularly on the high-pressure side.
▪
Do NOT use taped wires, stranded conductor wires, extension cords, or
connections from a star system. They can cause overheating, electrical shocks or
fire.
CAUTION
Do NOT push or place redundant cable length into the unit.
INFORMATION
Also read the precautions and requirements in the "general safety precautions"
chapter in the installer and user reference guide.
16.1.2 Specifications of standard wiring components
Field wiring consists of:
▪
power supply wiring (including earth),
▪
DIII transmission wiring between units.
NOTICE
▪
Keep the power line and transmission line apart from each other. Transmission
wiring and power supply wiring may cross, but may NOT run parallel.
▪
In order to avoid any electrical interference, the distance between both wirings
should ALWAYS be at least 50 mm.
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 below.
Component
Unit
BS4A
BS6A
BS8A
BS10A
BS12A
Power supply
cable
MCA
(a)
0.5
0.6
0.8
1.0
1.1
Voltage
220-240 V
Phase
1~
Frequency
50 Hz
