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Confirm the name of each unit and name of each terminal
block of the unit and connect the wiring in accordance
with the directions given in the manual so that there is no
incorrect wiring. Incorrect wiring will damage the electric
parts and cause smoke and fire.
When installing the connection cables near a source of
electromagnetic waves, use shielded cable.
Otherwise, a breakdown or malfunction could result.
The terminal screws and earth (ground) screws have dif-
ferent shapes. Be sure to install the screws in the correct
locations. If the screws are installed in the wrong loca-
tions, the circuit board could be damaged.
51 11
Wiring method
PROPER SYSTEM DIAGRAM
General-purpose
building control computer
(L
W
®
device)
ON
ORKS
®
L
W
ON
ORKS
Network
Outdoor unit
Network
Convertor for
®
L
W
ON
ORKS
(UTY-VLGX)
Outdoor unit
Network
Convertor for
®
L
W
ON
ORKS
(UTY-VLGX)
Indoor unit
VRF
Outdoor unit
En-3
Lighting
facilities
Security
system
Automatic fire
alarm interface
Ventilation
system
Indoor unit
VRF network system 1
Indoor unit
VRF network system 2
Transmission cable
(non-polar
Router
2-conductor)
(Field supplied)
Note :
Router should be needed by the number of
controlling items in the BMS.
*1. Please do not make the connection like this
between VRF systems.
Maximum connectable indoor unit
number per 1 Network Convertor
Maximum connectable outdoor unit
number per 1 Network Convertor
Maximum connectable Network
Convertor number per 1 BMS
Maximum connectable Network
Convertor number per 1 VRF System
ELECTRICAL WIRING
General-purpose building control computer
(L
W
ON
ORKS
TRANSMISSION
CABLE
Router
(Field supplied)
INDOOR UNIT
NO HIGH VOLTAGE
X1 X2
Y1 Y2 Y3
OUTDOOR UNIT
X1 X2
*1
Transmission cable to
VRF network
Note :
▪
Do not bind the power supply cable and transmission
cable to avoid an erroneous operation.
▪
Use shield cable for transmission cable.
The shield metal should be earthed (grounded).
▪
Do not forget to
▪
Install the disconnect switch to the easily accessible loca-
tion.
▪
Install the fuse (3A) to the L line of power supply cable.
®
device)
POWER SUPPLY CABLE
NETWORK CONVERTOR
POWER
SUPPLY
电 源
L
N
TRANSMISSION CABLE
MASTER
OR
NO HIGH VOLTAGE
SLAVE
Z1 Z2
H1 H2
OUTDOOR
UNIT
Network Convertor
Power supply cable
Transmission cable to
®
L
W
network
ON
ORKS
earth (ground) the Network Convertor.
128
100
4
1
1Φ 50/60Hz
208-240V
SWITCH (DISCON-
NECT SWITCH)
FUSE (3A)
NO HIGH VOLTAGE
禁止
TRANSMISSION
信号线
LON
VRF
B1
B2
X1
X2
INDOOR UNIT
NO HIGH VOLTAGE
X1 X2
Y1 Y2 Y3
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