42-EN
41-EN
– 21 –
<In the case of combining with outdoor units of Super Modular Multi System u series (SMMS-u)>
Uv
line and
Uc
line (
L2, L3, L4
)
(2-core shield wire, non-polarity)
Wire size :
1.0 to 1.5 mm²
(Up to 1000 m)
Uh
line (
L1
)
(2-core shield wire, non-polarity)
Wire size :
1.0 to 1.5 mm²
2.0 mm²
(Up to 1000 m)
(Up to 2000 m)
y
U (v, h, c)
line means of control wiring.
Uv
line : Between indoor and outdoor units.
Uh
line : Central control line.
Uc
line : Between outdoor and outdoor units.
y
Uv
line and
Uc
line are independent from another refrigerant line. Total length of
Uv
and
Uc
lines
(L3+L4)
in
each refrigerant line is up to 1000 m.
REQUIREMENT
For connection of Uv line / Uc line or Uh 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.
[Uh line]
L1
= Up to 2000 m
[Uv and Uc line]
L2
= Up to 1000 m
(L3+L4)
= Up to 1000 m
Central control device
Outdoor unit
Indoor unit
Remote controller
<U series>
<U series>*
<U series>*
(SMMS-u)
* Even if the indoor unit and the remote controller are "other than U series", the wiring
speci
fi
cation are the same.
Power supply wire and communication wires speci
fi
cations
Power supply wire and communication wires are locally procured.
For the power supply speci
fi
cations, follow to the table below. If capacity is little, it is dangerous because overheat
or burnout may be caused.
For speci
fi
cations of the power capacity of the outdoor unit and the power supply wires, refer to the Installation
Manual attached to the outdoor unit.
Indoor unit power supply
y
For the power supply of the indoor unit, prepare the exclusive power supply separated from that of the outdoor
unit.
y
Arrange the power supply, circuit breaker, and main switch of the indoor unit connected to the same outdoor unit
so that they are commonly used.
y
Power supply wire speci
fi
cation: Cable 3-core 2.5 mm²,
in conformity with Design 60245 IEC 57
.
Power supply
Power supply
220V-240V ~, 50Hz
208V-230V ~, 60Hz
Power supply switch / circuit breaker or power supply wiring / fuse rating for indoor units should be selected by the
accumulated total current values of the indoor units.
Power supply wiring
Below 50 m
3 × 2.5 mm² (power supply and earth)
Control wiring, Central controller wiring
y
2-core with polarity wires are used for the Control wiring between indoor unit and outdoor unit and Central
controller wiring.
y
To prevent noise trouble, use 2-core shield wire.
Communication line
TU2C-Link models (U series) can be combined with TCC-Link models (other than U series).
For details of communication type, refer to the following table.
Communication type and model names
Communication
type
TU2C-Link
(U series and future models)
TCC-Link
(Other than U series)
Outdoor unit
MMY-MUP
ÛÛÛ
This letter indicates U series model.
Other than U series
MMY-MHP
ÛÛÛ
, MMY-MAP
ÛÛÛ
MCY-MHP
ÛÛÛ
Indoor unit
MM
Û
-UP
ÛÛÛ
This letter indicates U series model.
Other than U series
MM
Û
-AP
ÛÛÛ
Wired remote
controller
RBC-ASCU
ÛÛÛ
This letter indicates U series model.
Other than U series
Wireless remote
controller kit &
receiver unit
RBC-AXU
ÛÛÛ
This letter indicates U series model.
Other than U series
U series outdoor unit : SMMS-u (MMY-MUP
ÛÛÛ
)
Other than U series outdoor unit : SMMS-i, SMMS-e etc. (MMY-MHP
ÛÛÛ
, MMY-MAP
ÛÛÛ
)
