6 Installation
Installer and user reference guide
32
SERHQ020~0 SEHVX20~64BAW
Split packaged air-cooled water chiller
4P508020-1A – 2018.01
System example
a
b
d
c
B
c
f
e
g
h
a
Field power supply
b
Main switch
c
Earth leakage breaker
d
Outdoor unit
e
Indoor unit
f
User interface
g
Power supply wiring (sheathed cable) (230 V)
h
Transmission wiring (sheathed cable) (16 V)
6.9.6
To connect the power supply of the
outdoor unit
L1
L2
L3
N
a
c
d
b
f
e
g
h
i
j
k
a
Power supply (400 V, 3N~ 50 Hz)
b
Fuse
c
Earth leakage breaker
d
Grounding wire
e
Power supply terminal block
f
Connect each power wire
g
RED to L1, WHT to L2, BLK to L3 and BLU to N
h
Ground wire (GRN/YLW)
i
Clamp the power wire to the plastic bracket using a field
supplied clamp to prevent external force being applied to
the terminal.
j
Clamp (field supply)
k
Cup washer
l
When connecting the earth wire, it is recommended to
perform curling.
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.
NOTICE
When routing earth wires, secure clearance of 50 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.
SERHQ020
a
g
c
d
b
i
g
e
j
h
f
f
f
SERHQ032
f
f
g
g
i
h
e
j
f
a c
d
b
f
f
a
Electrical wiring
b
Wiring between units
c
Earth wire
d
Clamp to the electrical component box with field supplied
clamps.
e
When routing out the power/ground wires from the right
side
f
Clamp to the back of the column support with field supplied
clamps.
g
When routing out the inter-unit wirings from the opening for
piping
h
When routing out the power/ground wires from the front
i
When routing out the ground wires from the left side
j
When wiring, do not detach the acoustic insulators from the
compressor.
NOTICE
When routing the remote control cord and inter-unit wiring,
secure clearance of 50 mm or more away from the power
wiring. Ensure that the power wiring does not contact any
heated sections. When wiring, pay attention not to detach
the acoustic insulators from the compressor.
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.)
