Toshiba Carrier MMD-AP0094SPH2UL Manuale di installazione - Pagina 14

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Power supply wire
Recommended wire diameter and wire length for power supply wire.
Power supply wiring
▼ Electric characteristics
Model
Power Supply
MMD-AP0074SPH2UL
MMD-AP0094SPH2UL
MMD-AP0124SPH2UL
208 / 230 V-1-60 Hz
MMD-AP0154SPH2UL
MMD-AP0184SPH2UL
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.
25-EN
Wire size: 2 × AWG14
Up to 164'1" (50 m)
1 × AWG14 or thicker
Ground
MCA : Minimum Circuit Amps
MOCP : Maximum Overcurrent Protection (Amps)
Voltage Range (V)
MCA
Min
Max
(A)
0.73
0.73
187
253
0.75
0.88
1.00
(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
L2
Ln
(Max. 8 units)
– 13 –

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.
▼ Wiring example
MOCP
(A)
Outdoor Power supply
15
15
15
Circuit breaker
15
15
Header outdoor unit
Ground
L1 L2 L3 N
terminal
Indoor unit
Ground
L1L2
Disconnect
switch per NEC
Indoor
power
supply
Circuit
208 /
230-1-60
breaker
Outdoor Power supply
Circuit breaker
Follower outdoor unit
Ground
U1U2U3U4
U5U6
L1 L2 L3 N
U1U2U3U4
U5U6
terminal
Control wiring between outdoor units
Control wiring between indoor and outdoor units
Control wiring between indoor units
Indoor unit
Indoor unit
Ground
Ground
U1U2
A B
L1L2
U1U2
A B
L1L2
Disconnect
Disconnect
A B
A B
switch per
switch per
NEC
NEC
Remote
Remote
control
control
Indoor unit
Ground
U1U2
A B
L1L2
U1U2
A B
Disconnect
A B
switch per
NEC
Remote
control
Group control
26-EN