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Electrical installation
Installer and user reference guide
84
BS4~12A14AJV1B
VRV 5 branch selector unit
4P695527-1 – 2022.02
16.2 To connect the electrical wiring
NOTICE
▪
Follow the wiring diagram (delivered with the unit, located at the inside of the
service cover).
▪
For instructions on how to connect the optional equipment, see the installation
manual delivered with the optional equipment.
▪
Make sure the electrical wiring does NOT obstruct proper reattachment of the
service cover.
1
2
Strip insulation from the wires.
a
b
a
Strip wire end to this point
b
An excessive strip length may cause electrical shock or leakage
Allowed
Not allowed
3
Connect the transmission wiring as follows:
▪
Connect the terminals F1/F2
(TO IN/D) on the control PCB in the outdoor
unit's switch box
to the terminals
F1/F2
(Outdoor unit)
on terminal block
X2M of the first BS
unit. See also the installation manual delivered with the
outdoor unit.
▪
In case of multiple BS
units in the system that are connected to the same
transmission wiring branch line, connect the terminals F1/F2
(BS unit)
on
terminal block X2M of the first BS
unit to the terminals F1/F2
(Outdoor unit)
on terminal block X2M on the second BS
unit. Repeat the same procedure
for further BS units, where each time the terminals F1/F2
(BS unit)
on
terminal block X2M on the n
th
BS unit are connected to the terminals F1/F2
(Outdoor unit)
on terminal block
X2M on the (n+1)
th
BS
unit.
▪
Connect the terminals F1/F2
(Indoor unit X)
on terminal blocks X3M~X5M to
the corresponding indoor units:
In case of…
connect…
one indoor unit where branch pipes
are NOT joined
the terminals F1/F2
(Indoor unit X)
on the
BS
unit to the F1/F2 terminals on the
corresponding indoor unit.
multiple indoor units connected to
the same branch
the terminals F1/F2
(Indoor unit X)
on the
BS
unit to the F1/F2 terminals on the first
indoor unit. Connect the F1/F2 terminals
on the first indoor unit to the F1/F2
terminals on the second indoor unit, and
so on.
joined branch pipes
1 of the 2 terminals F1/F2
(Indoor unit X)
of the branches that are joined on the BS
unit to the F1/F2 terminals on the
corresponding indoor unit.
