Power supply wire and communication wires specifications
Power supply wire and communication wires are locally procured.
For the power supply specifications, follow to the table below. If capacity is little, it is dangerous because overheat
or burnout may be caused.
For specifications 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
For the power supply of the indoor unit, prepare the exclusive power supply separated from that of the
outdoor unit.
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.
Power supply wire specification: Cable 3XAWG12.
Power supply
Power supply
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.
Wire size: 2 × AWG12
Power supply wiring
Ground
Control wiring, Central controller wiring
2-core with non-polarity wires are used for the Control wiring between indoor unit and outdoor unit and Central
controller wiring.
To prevent noise trouble, use 2-core shield wire.
Electric characteristics
Model
Power Supply
MMU-UP0151YHP-UL
MMU-UP0181YHP-UL
208/230V-1-60 Hz
MMU-UP0241YHP-UL
27-EN
208/230-1-60
1 × AWG12 or thicker
Voltage Range (V)
MCA
MOCP
Min
Max
(A)
0.73
187
253
0.73
1.00
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
MMY-MUP
Outdoor unit
MM -UP
Indoor unit
RBC-A
Wired remote controller
RBC-AX
Wireless remote
controller kit &
receiver unit
TCB-TC
Remote sensor
U series outdoor unit: SMMS-u, SMMS , SHRM-A, MiNi-SMMS
Other than U series outdoor unit: SMMS-i, SMMS-e, SHRM-e, SMMS-7 etc.
<In the case of combining with outdoor units of Super Modular Multi System u series (SMMS-u)>
Follow the wiring specifications in the table below even when units other than U series are mixed in the indoor units
and remote controllers to be connected.
Uv line and Uc line (L2, L3, L4)
(2-core shield wire, non-polarity)
(A)
Uh line (L1)
(2-core shield wire, non-polarity)
15
15
U (v, h, c) line means of control wiring.
15
Uv line : Between indoor and outdoor units.
Uh line : Central control line.
Uc line : Between outdoor and outdoor units.
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
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.
– 14 –
TU2C-Link
(U series and future models)
, MMY-SUG
, MCY-MUG
Other than U series
MMY-MAP
MCY-MHP
This letter indicates U series model.
Other than U series
MM -AP
This letter indicates U series model.
U
Other than U series
This letter indicates U series model.
U
Other than U series
This letter indicates U series model.
U
Other than U series
This letter indicates U series model.
Wire size :
AWG16
AWG16
Wire size :
AWG14
TCC-Link
(Other than U series)
, MMY-SAP
EN
FR
ES
28-EN