Electric Characteristics - Toshiba Carrier MMD-AP0726HP-UL Manuel D'installation

Power supply wire
Recommended wire diameter and wire length for power supply wire.
Power supply wiring
q Electric characteristics
Model Power Supply
MMD-AP0726HP-UL
208 / 230 V-1-60 Hz
MMD-AP0966HP-UL
Control wire
Control wiring between indoor units, and outdoor unit
(2-core shielded wire)
Remote control wiring
2-core with non-polarity wire is used for wiring of the remote control wiring and group remote controls wiring.
Remote control wiring, remote control inter-unit wiring
Total wire length of remote control wiring and remote control
inter-unit wiring = L + L1 + L2 + ... Ln
Total wire length of remote control inter-unit wiring = L1 + L2 + ... Ln
Indoor unit Indoor unit
Remote
L
control
L1
wiring
Remote
Remote control inter-unit wiring
control
NOTE
Use copper supply wire.
Use UL wire rated 600 V for the power supply.
Use UL wire rated 300 V for the remote control wires and control wires.
CAUTION
The remote control wire (Communication line) and AC208 / 230 V 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.
27-EN
01_1117882101-EN.indd 14 01_1117882101-EN.indd 14
Wire size: 2 × AWG12
Up to 164'1" (50 m)
Ground 1 × AWG12 or thicker
Voltage Range (V) MCA MOCP
Min Max (A) (A)
5.7 15
187 253
7.4 15
(Up to 3280'10 (1000 m)) AWG16
Wire size
(Up to 6561'8" (2000 m)) AWG14
Wire size: AWG20
In case of wired type only Up to 1640'5 (500 m)
In case of wireless type included Up to 1312'4 (400 m)
Up to 656'2 (200 m)
Indoor unit Indoor unit
L 2 L n
(Max. 8 units)
Wiring between indoor and outdoor units
NOTE
An outdoor unit connected with control wiring between indoor and outdoor units wire becomes automatically
the header unit.
q Wiring example
Outdoor Power supply
Circuit breaker
Header outdoor unit
Ground
Ground
L1 L2 L3 N U1 U2 U3 U4 U5 U6
terminal terminal
Control wiring between indoor and outdoor units
Control wiring between indoor units
Indoor unit Indoor unit
Ground Ground
L1 L2 U1U2 A B
Disconnect Disconnect
switch per A B switch per
NEC NEC
Remote control
Indoor
power
supply
Circuit
208 /
breaker
230-1-60
– 14 –
Outdoor Power supply
Circuit breaker
Follower outdoor unit
L1 L2 L3 N U1 U2 U3 U4 U5 U6
Control wiring between outdoor units
Indoor unit Indoor unit
Ground Ground
L1 L2 U1U2 A B L1 L2 U1U2 A B L1 L2
Disconnect Disconnect
A B switch per A B switch per
NEC NEC
Remote control Remote control
Group control
U1U2 A B
EN EN
EN EN
EN EN
EN EN
28-EN
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