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Do not open the lid of EL. COMPO. BOX 2
(on the left-hand side), which is not touched
Prohibited
during the installation work.
Power supply
(3N~50Hz 400V)
Earth leakage
circuit breaker
(Used for ground
fault, overload, short-
circuit protection.)
Ground wire
Attach insulation
sleeves
Clamp (1) (accessory)
Power circuit, safety device, and cable requirements
• A power circuit (see the following table) must be provided for con-
nection of the unit. This circuit must be protected with the required
safety devices, i.e. a main switch, a slow blow fuse on each phase
and an earth leakage circuit breaker.
• When using residual current operated circuit breakers, be sure to
use a high-speed type (1 second or less) 200mA rated residual
operating current.
• Use copper conductors only.
• Use insulated wire for the power cord.
• Select the power supply cable type and size in accordance with
relevant local and national regulations.
• Specifications for local wiring are in compliance with IEC60245.
• Use wire type H05VV when protected pipes are used.
• Use wire type H07RN-F when protected pipes are not used.
Phase and
Voltage
frequency
φ 3, 50Hz
380-415V
CAUTION
• Do not coat stranded wires with solder.
• Be sure to use crimp-style terminal with insulating sleeves for
connections. (See the figure below.)
Crimp-style terminal
• For wiring, use the designated power wire and connect firmly,
then secure to prevent outside pressure being exerted on the ter-
minal board.
• Use an appropriate screwdriver for tightening the terminal screws.
A screwdriver with a small head will strip the head and make
proper tightening impossible.
• Over-tightening the terminal screws may break them.
See the following table for the tightening torque of the terminal
screws.
10
EL.
EL. COMPO. BOX 1
COMPO.
BOX 2
L1
L2
L3
N
Power supply
terminal block
Ground
terminal
Ground wire
Clamp (1) (accessory)
MCA
MFA
24.1A
30A
Power wire
Insulating sleeve
• When pulling the ground wire out, wire it so that it comes through
the cut out section of the cup washer. (See the figure below.) An
improper ground connection may prevent a good ground from
being achieved.
Crimp-style terminal
• When two wires are connected to a single terminal, connect them
so that the rear sides of the crimp contacts face each other. Also,
make sure the thinner wire is on top, securing the two wires simul-
taneously to the resin hook using the accessory clamp (1).
Terminal block
Crip style terminal Wire: narrow
7-5 Procedure for Wiring Inside Units
• Referring to the following figure, secure and wire the power and
transmission wiring using the accessory clamp (1), (2), and (3).
• Lay the ground wire so that it will not come in contact with the lead
wires of the compressor. Other equipment will be adversely
affected if the ground wire comes in contact with the lead wires of
the compressor.
• Make sure all wiring do not contact to the pipes (hatching parts in
the figure).
• The transmission wiring must be at least 50 mm away from the
power wiring.
• After wiring work is completed, check to make sure there are no
loose connections among the electrical parts in the
EL.COMPO.BOX 1.
When routing
out the power/
ground wires
Stay
from the left
side.
Conduit
When routing out
the transmission
wiring from the
opening for piping.
When routing out the power/
ground wires from the front.
When routing out the transmission
wiring from the knockout hole.
CAUTION
After wiring work is completed, check to make sure there are no loose
connections among the electrical parts in the EL.COMPO.BOX 1.
Cup washer
Cut out section
Wire: thick
Resin hook
Transmission
wiring
When routing
out the power/
ground wires
from the right
side.
Clear over
50 mm.
Retain to the back
of the column
support with the
accessory clamp (2).
English
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