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Installation Procedure
• Apply following equation.
n
Coef×35.6×L
×i
k
1000×A
k
k=1
• Calculation
– Installing with 1 sort wire.
2.5 [mm
]
2
2.5 [mm
]
2
-2.2 [V]
-2.0 [V]
220 [V]
-(2.2+2.0+1.8+1.5+1.3+1.1+0.9+0.7+0.4+0.2)=-11.2 [V]
– Installing with 2 different sort wire.
4.0 [mm
2
]
4.0 [mm
]
2
-1.4 [V]
-1.2 [V]
220 [V]
-(1.4+1.2+1.8+1.5+1.3+1.1+0.9+0.7+0.4+0.2)=-10.5 [V]
CAUTION
• Select the power cable in accordance with relevant
local and national.
• Wire size must comply with local and national code.
• You should connect the power cable into the power
cable terminal and fasten it with a clamp.
• The unbalanced power must be maintained within 10%
of supply rating among whole indoor units.
• If the power is unbalanced greatly, it may shorten
the life of the condenser. If the unbalanced power is
exceeded over 10% of supply rating, the indoor unit is
protected, stopped and the error mode indicates
• Connect the power cable to the auxiliary circuit breaker.
An all pole disconnection from the power supply must be
• You must keep the cable in a protection tube.
• Maximum length of power cables are decided within
10% of power drop. If it exceeds, you must consider
another power supplying method.
• The circuit breaker(MCCB, ELB) should be considered
more capacity if many indoor units are connected from
one breaker.
• Use round pressure terminal for connections to the
power terminal block.
18
English
k
) <
10% of input voltage[V]
······· 2.5 [mm
] ·······
2
Within 198V
to 242V
208.8 [V] :
Applicable
······· 2.5 [mm
] ·······
2
Within 198V
to 242V
209.5 [V] :
Applicable
• For wiring, use the designated power cable and
connect it firmly, then secure to prevent outside
pressure being exerted on the terminal 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.
Step 13 Optional: Extending the power
cable
1 Prepare the following tools.
Tools
Spec
Crimping pliers
MH-14
Connection sleeve
20xØ6.5
(mm)
(HxOD)
Width 19
Insulation tape
mm
Contraction tube
70xØ8.0
(mm)
(LxOD)
2 As shown in the figure, peel off the shields from the
rubber and wire of the power cable.
• Peel off 20 mm of cable shields from the pre-
installed tube.
Power cable
20
180
180
120
60
20
20
CAUTION
• For information about the power cable specifications for
indoor and outdoor units, refer to the installation manual.
• After peeling off cable wires from the pre-installed
tube, insert a contraction tube.
Shape
(Unit: mm)
20
20
60
120
Pre-installed
tube for the
20
power cable
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