– 17 –
The remote controller wire (Communication line) and AC 208 – 240V wires cannot be parallel to contact
each other and cannot be stored in the same conduits. If doing so, a trouble may be caused on the control
system due to noise or other factor.
If U series models (TU2C-Link) are combined with models other than U series (TCC-Link), the wiring
specifications and maximum number of connectable indoor units will be changed. Pay attentions to their
communication specifications when carrying out the installation, maintenance, or repair. For its details, refer
to the “Communication line” in
8 Electrical connection
.
•
•
Remote controller wiring
• 2-core with non-polarity wire is used for wiring of the remote controller wiring and group remote controllers wiring.
CAUTION
Remote controller wiring, remote controller inter-unit
wiring
Wire size: 0.5 mm² to 2.0 mm²
Total wire length of remote controller wiring and remote
controller inter-unit wiring = L + L1 + L2 + … Ln
In case of wired type only
Up to 500 m
In case of wireless type
included
Up to 400 m
m
0
0
2
o
t
p
U
n
L
…
+
2
L
+
1
L
=
g
n
ir
i
w
t
i
n
u
-
r
e
t
n
i
r
e
ll
o
r
t
n
o
c
e
t
o
m
e
r
f
o
h
t
g
n
e
l
e
r
i
w
l
a
t
o
T
L1
L
n
L
2
L
Indoor unit
Remote controller inter-unit wiring
Indoor unit
Indoor unit
Indoor unit
Remote
controller
Remote
controller
wiring
<In the case of combining with outdoor units other than Super Modular Multi System u series (SMMS-u)>
Control wiring between indoor units, and outdoor unit
(L2, L3)
(2-core shield wire, non-polarity)
Wire size :
1.25 mm²
2.0 mm²
(Up to 1000 m)
(Up to 2000 m)
Central control line wiring
(L1)
(2-core shield wire, non-polarity)
Control wiring between outdoor units
(L4)
(2-core shield wire, non-polarity)
Wire size :
1.25 to 2.0 mm²
(Up to 100 m)
•
The length of the communication line
(L1+L2+L3)
means the total length of the inter-unit wire length between
indoor and outdoor units added with the central control system wire length.
[Communication line]
(L1+L2+L3)
= Up to 2000 m
Central control device
<Other than U series>
Outdoor unit
(SMMS-i)
(SMMS-e)
(MiNi SMMS)
etc.
<U series>*
Indoor unit
<U series>*
Remote controller
*Even if the indoor unit and the remote controller are “other than U series”, the wiring specification are the same.
33-EN
34-EN
