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Installation Procedure
• Calculation
– Installing with 1 sort wire.
0.004 [inch²]
0.004 [inch²]
(2.5mm²)
(2.5mm²)
-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.
0.006 [inch²]
0.006 [inch²]
(4.0mm²)
(4.0mm²)
-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 codes.
• 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.
A 2 pole disconnection from the power supply must be
incorporated in the field wiring 0.12 inch (3mm).
• Depending on the installation location, power
cables should be installed in a protective conduit in
accordance with local and national codes.
• Maximum length of power cables are decided within
10% of power drop. If it exceeds, you must consider
another power supplying method.
• If multiple indoor units are connected to a single
circuit breaker (ELCB, MCCB, ELB), the circuit breaker
size must be sized based on local and national electric
codes.
• Use round pressure terminal for connections to the
power terminal block.
22
English
······· 0.004 [inch²] (2.5mm²) ·······
Within 187V
to 253V
208.8 [V] :
Applicable
······· 0.004 [inch²] (2.5mm²) ·······
Within 187V
to 253V
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
Crimping pliers
0.79xØ0.26
Connection sleeve
(20xØ6.5)
[inch(mm)]
Width 0.75
Insulation tape
inch (19
[inch(mm)]
2.76xØ0.31
Contraction tube
(70xØ8.0)
[inch(mm)]
2 As shown in the figure, peel off the shields from the
rubber and wire of the power cable.
• Peel off 0.79 inch (20 mm) of cable shields from the
pre-installed tube.
Power cable
0.79
(20)
7.09 (180)
4.72 (120)
2.36 (60)
0.79
0.79
(20)
(20)
Spec
Shape
MH-14
(HxOD)
mm)
(LxOD)
[inch(mm)]
0.79
0.79
(20)
(20)
2.36(60 )
4.72 (120)
7.09 (180)
Pre-installed
0.79
tube for the
(20)
power cable
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