44-EN
43-EN
– 22 –
EN
EN
EN
EN
<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)
y
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.
REQUIREMENT
For connection of between indoor and outdoor units line / between outdoor and outdoor units line or central
control line, wire each line using wires with the same type and size. If different wire types and size are mixed
and used in a system, communication trouble is caused.
[Communication line]
(L1+L2+L3)
= Up to 2000 m
Central control device
Outdoor unit
Indoor unit
Remote controller
<Other than U series>
<U series>*
<U series>*
(SMMS-i)
(SMMS-e)
(MiNi SMMS)
etc.
* Even if the indoor unit and the remote controller are "other than U series", the wiring
speci
fi
cation are the same.
Remote controller wiring
y
2-core with non-polarity wire is used for the remote controller wiring and group remote controllers wiring.
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 one remote
controller
Up to 500 m
In case of two remote
controller
Up to 400 m
Max. length of each remote control wiring between indoor units = L1, L2, … , Ln
Up to 200 m
CAUTION
y
The remote controller wire (Communication line) and AC 208V-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.
y
If U series models (TU2C-Link) are combined with models other than U series (TCC-Link), the wiring
speci
fi
cations and maximum number of connectable indoor units will be changed. Pay attentions to their
communication speci
fi
cations when carrying out the installation, maintenance, or repair. For its details, refer
to the “Communication line"in
9 Electrical connection.
L
L
L1
L1
Fresh Air
Intake
Remote
controller
Fresh Air
Intake
Indoor unit
Fresh Air
Intake
Remote
controller
wiring
Remote
controller
Incorrect
The fresh air intake unit and indoor unit for air conditioning cannot be connected as a group control.
REQUIREMENT
After carrying out installation of additional indoor unit, relocation, or repairing, set the addresses again.
For its detail, refer to the Installation Manual attached to the outdoor unit.
