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Installation Procedure
Example of Installation
Total power cable length L = 328.08 [ft. ] (100 [m]), Initial pull-in current = 10[A], Running current of each units = 1[A],
Total 10 indoor units were installed
10 [A]
MCCB+ELB
or
or
ELCB
0[m]
0 [ft.] (0 [m])
• Apply following equation.
Coef×35.6×L
×i
n
k
k
1000×A
k=1
k
• Calculation
– Installing with 1 sort wire.
- Installing with 1 sort wire.
0.0039 [inch²]
0.0039 [inch²]
2.5 [mm
2
]
2.5 [mm
]
2
(2.5 [mm²])
(2.5 [mm²])
-2.2 [V]
-2.0 [V]
-2.2 [V]
-2.0 [V]
220 [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]
-(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.
- Installing with 2 different sort wire.
0.0062 [inch²]
0.0062 [inch²]
4.0 [mm
]
4.0 [mm
]
2
2
(4.0 [mm²])
(4.0 [mm²])
-1.4 [V]
-1.2 [V]
-1.4 [V]
-1.2 [V]
220 [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]
-(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
18
English
9 [A]
Indoor unit 1
Indoor unit 1
10[m]
32.81 [ft. ] (10 [m])
) <
10% of input voltage[V]
0.0039 [inch²]
······· 2.5 [mm
] ·······
2
Within 198V
(2.5 [mm²])
Within 187V to
to 242V
253V
208.8 [V] :
208.8 [V]: Applicable
Applicable
0.0039 [inch²]
······· 2.5 [mm
] ·······
2
Within 198V
(2.5 [mm²])
Within 187V to
to 242V
253V
209.5 [V] :
209.5 [V]: Applicable
Applicable
Applicable
Indoor unit 2
Indoor unit 2
20[m]
65.62 [ft. ] (20 [m])
• 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.
• 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))
(HxOD)
Width 0.75
Insulation tape
inch (19
(inch(mm))
2.76xØ0.31
Contraction tube
(70xØ8.0)
(inch(mm))
1 [A]
Indoor unit
Indoor unit
100[m]
328.08 [ft. ] (100 [m])
Spec
Shape
MH-14
mm)
(LxOD)
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