6 Installation
Installer and user reference guide
30
RXYTQ8~16T7YF
VRV IV system air conditioner
4P388989-1B – 2016.02
6.8.8
To route and fix the power supply
NOTICE
When routing earth wires, secure clearance of 25 mm or
more away from compressor lead wires. Failure to observe
this instruction properly may adversely affect correct
operation of other units connected to the same earth.
The power supply wiring can be routed from the front and left side.
Fix it to the lower mounting hole.
d
c
X1M
a
b
d
a
c
d
X1M
b
8 HP
10~16 HP
A
A
A
d
d
a
Power supply (possibility 1)
(a)
b
Power supply (possibility 2)
(a)
c
Power supply (possibility 3)
(a)
. Use conduit.
d
Tie wrap
(a)
Knockout hole has to be removed. Close the hole to avoid
small animals or dirt from entering.
6.8.9
To connect the power supply
NOTICE
Never connect the power supply to transmission wiring
terminal block. Otherwise the entire system may break
down.
INFORMATION
Installation and routing in case the cool/heat selector is
used: refer to the installation manual of the cool/heat
selector.
CAUTION
When connecting the power supply, the earth connection
must be made before the current-carrying connections are
established. When disconnecting the power supply, the
current-carrying connections must be separated before the
earth connection is. The length of the conductors between
the power supply stress relief and the terminal block itself
must be as such that the current-carrying wires are
tautened before the earth wire is in case the power supply
is pulled loose from the stress relief.
Tightening torque for the terminal screws:
Screw size
Tightening torque (N•m)
M8 (Power terminal block)
5.5~7.3
M8 (Ground)
NOTICE
Recommendations when connecting the earth wire:
Wire it so that it comes through the cut out section of the
cup washer. (An improper earth connection may prevent a
good earthing from being achieved.)
The power supply must be clamped to the plastic bracket using field
supplied clamp material.
The green and yellow striped wire must be used for earthing only
(refer to the figure below).
a
b
c
d
f
g
e
j
k
h
i
8 HP
a
b
c
d
f
g
e
j
k
h
i
10~16 HP
a
Power supply (380~415 V - 3N~ 50Hz
OR
400 V -
3N~60 Hz)
b
Fuse
c
Earth leakage protector
d
Earth wire
e
Power supply terminal block
f
Connect each power wire: RED to L1, WHT to L2, BLK to
L3 and BLU to N
g
Earth wire (GRN/YLW)
h
Clamp the power supply to the plastic bracket using a field
supplied clamp to prevent external force being applied to
the terminal.
i
Clamp (field supplied)
j
Cup washer
k
When connecting the earth wire, it is recommended to
perform curling.
Multiple outdoor units
To connect the power supply for multiple outdoor units to each other,
ring tongues have to be used. No bare cable can be used.
The ring washer which is standard provided should be removed in
that case.
Attaching both cables to the power supply terminal should be done
as indicated.
L1 L2 L2 N
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