Samsung Duct Type Series Installation Manual page 20

Wiring work
Decide the power cable specification and maximum length within 10 % power drop among indoor units.
• coef : 1.55
• Lk : Distance among each indoor unit[m], Ak : Power cable specification[mm
Example of Installation
Total power cable length L = 100 m(328 ft), Running current of each units 1[A]
Total 10 indoor units were installed.
ELCB
Or MCCB+
ELB
0[m]
Apply following equation.
n
Coef×35.6×L
∑
(
1000×A
k=1
❋ Calculation
• Installing with 1 sort wire.
2
2.5[mm ](0.004 inch
-2.2[V]
220[V]
• Installing with 2 different sort wire.
2
4.0[mm ](0.006 inch
-1.4[V]
220[V]
How to connect your extended power cables
1. Prepare the following tools.
Tools
Spec
Shape
20
n
Coef×35.6×Lk×ik
∑(
k=1
10[A] 9[A]
Indoor unit 1
10[m](32.8 ft)
×i
K K
) < 10 % of input voltage[V]
K
2 2
) 2.5[mm ](0.004 inch
-2.0[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
) 4.0[mm ](0.006 inch
-1.2[V]
-(1.4+1.2+1.8+1.5+1.3+1.1+0.9+0.7+0.4+0.2)=-10.5[V]
Crimping pliers Connection sleeve (mm)
MH-14
) <
1000×Ak
2
Indoor unit 2
20[m](65.62 ft)
2
) ············ 2.5[mm
2
) ············ 2.5[mm
20xØ6.5(HxOD)
10 % of input voltage[V]
(inch 2 )], ik : Running current of each unit[A]
1[A]
100[m](328 ft)
2 2
](0.004 inch ) ············
208.8[V](Within 187 V ~ 253 V)
it's okay
2 2
](0.004 inch ) ············
209.5[V](Within 187 V ~ 253 V)
it's okay
Insulation tape Contraction tube (mm)
Width 19mm 70xØ8.0(LxOD)
Indoor unit 10