25
4
Wiring design
Keep the rule of below tables about size and length of communication wiring.
Table-1
Control wiring between indoor and outdoor units (L1, L2, L3), Central control wiring (L4)
*1 Total of control wiring length for all refrigerant circuits ( L1 + L2 + L3 + L4 )
Table-2
Control wiring between outdoor units (L5) (Other system)
Table-3
Remote control wiring (L6, L7)
y
t
i
r
a
l
o
p
-
n
o
n
,
e
r
o
c
-
2
g
n
i
r
i
W
e
r
i
w
d
l
e
i
h
S
e
p
y
T
Size / Length *1
AWG16: Up to 3280 ft (1000 m)
AWG14: Up to 6560 ft (2000 m) (*1)
y
t
i
r
a
l
o
p
-
n
o
n
,
e
r
o
c
-
2
g
n
i
r
i
W
e
r
i
w
d
l
e
i
h
S
e
p
y
T
)
5
L
(
)
m
0
0
1
(
t
f
0
3
3
o
t
p
U
/
4
1
G
W
A
o
t
6
1
G
W
A
h
t
g
n
e
L
/
e
z
i
S
e
r
o
c
-
2
g
n
i
r
i
W
4
1
G
W
A
o
t
0
2
G
W
A
e
z
i
S
Length
Up to 1640 ft (500 m) (L6 + L7)
Up 1310 ft (400 m) in case of wireless remote control in group control.
Up to 660 ft (200 m) total length of control wiring between indoor units (L6)
U3 U4
U1 U2
U1
U3
U2
U4
U1 U2
A B
U3 U4
U1 U2
U1 U2
A B
U1 U2
A B
U1 U2
A B
U1 U2
A B
U1 U2
A B
U3 U4
U1 U2 U5 U6
U1 U2
A B
U1 U2
A B
U1 U2
A B
U3 U4
U1 U2 U5 U6
L1
L5
L6
L6
L7
L7
L4
3
L
2
L
Central
control
m
e
t
s
y
s
r
e
h
t
O
m
e
t
s
y
s
s
i
h
T
Table-1
Header
unit
Follower
unit
Table-1
Table-2
Table-3
Outdoor unit
Indoor unit
l
o
r
t
n
o
c
e
t
o
m
e
R
l
o
r
t
n
o
c
e
t
o
m
e
R
l
o
r
t
n
o
c
e
t
o
m
e
R
Group control through a remote control
Group control of multiple indoor units (8 units) through a single remote control
B
A
B
A
B
A
B
A
B
A
B
A
(A.B)
8
.
o
N
7
.
o
N
4
.
o
N
3
.
o
N
2
.
o
N
1
.
o
N
t
i
n
u
r
o
o
d
n
I
Remote control
E16-3P1_databook.book Page 25 Tuesday, December 20, 2016 3:02 PM
