18
Installation Procedure
Instal
lation Pr
oc
edur
e
English
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
or
10 [A]
ELCB
MCCB+ELB
9 [A]
1 [A]
0[m]
10[m]
20[m]
100[m]
Indoor unit 1
Indoor unit 2
Indoor unit
•
Apply following equation.
n
Coef×35.6×L
k
×i
k
∑ (
) <
10% of input voltage[V]
k=1
1000×A
k
•
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]
208.8 [V] :
Applicable
Within 198V
to 242V
······· 2.5 [mm
2
] ·······
– 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]
209.5 [V] :
Applicable
Within 198V
to 242V
······· 2.5 [mm
2
] ·······
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
incorporated in the fixed wiring (≥0.12inch (3mm)).
•
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
Spec
Shape
Crimping pliers
MH-14
Connection sleeve
(inch(mm))
0.79xØ0.26
(20xØ6.5)
(HxOD)
Insulation tape
(inch(mm))
Width 0.75
inch (19
mm)
Contraction tube
(inch(mm))
2.76xØ0.31
(70xØ8.0)
(LxOD)
Indoor unit 1
or
Indoor unit 2
Indoor unit
0 [ft.] (0 [m])
32.81 [ft. ] (10 [m])
65.62 [ft. ] (20 [m])
328.08 [ft. ] (100 [m])
Within 187V to
253V
Within 187V to
253V
208.8 [V]: Applicable
- Installing with 2 different sort wire.
- Installing with 1 sort wire.
Applicable
0.0039 [inch²]
(2.5 [mm²])
0.0062 [inch²]
(4.0 [mm²])
0.0062 [inch²]
(4.0 [mm²])
0.0039 [inch²]
(2.5 [mm²])
0.0039 [inch²]
(2.5 [mm²])
0.0039 [inch²]
(2.5 [mm²])
-2.2 [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]
-(1.4+1.2+1.8+1.5+1.3+1.1+0.9+0.7+0.4+0.2)=-10.5 [V]
-2.0 [V]
-1.2 [V]
-1.4 [V]
209.5 [V]: Applicable
Содержание AM***NN4*CH Series
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