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The maximum length of the wiring between power supply unit for
transmission lines (on the transmission lines for centralized control) and
each outdoor unit and system controller is 200 m.
*1 Connected with simple remote controller.
-Power supply cords of appliances shall not be lighter than design 245 IEC 57, 227 IEC 57, 245 IEC 53 or 227 IEC 53.
9.1. Power supply wiring
-A switch with at least 3 mm contact separation in each pole shall be provided by the air conditioner installation.
•
Power supply cords of appliances shall not be lighter than design 245 IEC 57, 227 IEC 57, 245 IEC 53 or 227 IEC 53.
•
A switch with at least 3 mm contact separation in each pole shall be provided by the Air conditioner installation.
Total operating current of
[Fig. 9.1.1] (P.5)
the Indoor unit
A Ground-fault interrupter
F0 = 16 A or less *2
B Local switch/Wiring breaker
F0 = 25 A or less *2
C Indoor unit
F0 = 32 A or less *2
D Pull box
Minimum wire thickness (mm
Total operating current of
the Indoor unit
Main cable
Apply to IEC61000-3-3 about Max. Permissive System Impedance.
F0 = 16 A or less *
1.5
2
F0 = 25 A or less *
2.5
2
*1 The Ground-fault interrupter should support Inverter circuit.
F0 = 32 A or less *
2
4.0
The Ground-fault interrupter should combine using of local switch or wiring breaker.
Apply to IEC61000-3-3 about Max. Permissive System Impedance.
*1 The Ground-fault interrupter should support Inverter circuit.
*2 Please take the larger of F1 or F2 as the value for F0.
The Ground-fault interrupter should combine using of local switch or wiring breaker.
*2 Please take the larger of F1 or F2 as the value for F0.
F1 = Total operating maximum curent of the indoor units × 1.2
F1 = Total operating maximum curent of the indoor units × 1.2
F2 = {V1 × (Quantity of Type1)/C} + {V1 × (Quantity of Type2)/C} + {V1 × (Quantity of Type3)/C} + {V1 × (Quantity of Others)/C}
F2 = {V1 × (Quantity of Type1)/C} + {V1 × (Quantity of Type2)/C} + {V1 × (Quantity of Type3)/C} + {V1 × (Quantity of Others)/C}
Indoor unit
V1
V2
PEFY-NMAU
38
1.6
Indoor unit
PVFY-NAMU
C : Multiple of tripping current at tripping time 0.01s
Please pick up "C" from the tripping characteristic of the breaker.
C : Multiple of tripping current at tripping time 0.01s
<Example of "F2" calculation>
Please pick up "C" from the tripping characteristic of the breaker.
*Condition PEFY-NMAU × 3, C = 8 (refer to right sample chart)
F2 = 38 × 3/8
<Example of "F2" calculation>
= 14.25
➞ 16 A breaker (Tripping current = 8 × 16 A at 0.01s)
*Condition PVFY-NAMU × 3, C = 8 (refer to right sample chart)
F2 = 38 × 3/8
= 14.25
16 A breaker (Tripping current = 8 × 16 A at 0.01s)
12
*3 Current sensitivity is calculated using the following formula.
G1 = (V2 × Quantity of Type1) + (V2 × Quantity of Type2) + (V2 × Quantity of Type3) + (V2 × Quantity of Others) + (V3 × Wire length [km])
G1
30 or less
100 or less
Caution:
Do not use anything other than the correct capacity breaker and fuse. Using fuse, wire or copper wire with too large capacity may cause a risk of malfunction
or fire.
9.2. Connecting remote controller, indoor
and outdoor transmission cables
•
Connect indoor unit TB5 and outdoor unit TB3. (Non-polarized 2-wire)
The "S" on indoor unit TB5 is a shielding wire connection. For specifications
about the connecting cables, refer to the outdoor unit installation manual.
•
Install a remote controller following the manual supplied with the remote control-
ler.
•
Connect the "1" and "2" on indoor unit TB15 to a MA remote controller. (Non-
polarized 2-wire)
•
Connect the "M1" and "M2" on indoor unit TB5 to a M-NET remote controller.
(Non-polarized 2-wire)
•
Connect the remote controller's transmission cable within 10 m [32 ft] using a
0.75 mm
[AWG18] core cable. If the distance is more than 10 m [32 ft], use a
2
1.25 mm
2
[AWG16] junction cable.
[Fig. 9.2.1] (P.5) MA Remote controller
[Fig. 9.2.2] (P.5) M-NET Remote controller
Specifications are subject to change without notice.
A Terminal block for indoor transmission cable
B Terminal block for outdoor transmission cable
C Remote controller
•
DC 9 to 13 V between 1 and 2 (MA remote controller)
•
DC 24 to 30 V between M1 and M2 (M-NET remote controller)
[Fig. 9.2.3] (P.6) MA Remote controller
Minimum wire thickness (mm
Main cable
Branch
1.5
1.5
2.5
2.5
4.0
4.0
)
2
Ground-fault interrupter *
Branch
Ground
1.5
1.5
20 A current sensitivity *
2.5
2.5
30 A current sensitivity *
4.0
4.0
40 A current sensitivity *
V1
V2
38
1.6
Current sensitivity
Wire thickness
30 mA 0.1 sec or less
1.5 mm
100 mA 0.1 sec or less
2.5 mm
4.0 mm
as transmission cables.
CVVS, MVVS: PVC insulated PVC jacketed shielded control cable
CPEVS: PE insulated PVC jacketed shielded communication cable
CVV: PVC insulated PVC sheathed control cable
)
2
Ground-fault interrupter *1
Ground
1.5
20 A current sensitivity *3
2.5
30 A current sensitivity *3
4.0
40 A current sensitivity *3
Local switch (A)
Breaker for wiring (A)
1
(Non-fuse breaker)
Capacity
Fuse
16
16
20
3
25
25
30
3
3
32
32
40
6000
600
60
10
1
0.1
0.01
V3
2
48
2
56
66
2
9.3. Connecting electrical connections
Please identify the model name of the operation manual attached on the terminal
box cover with that shown on the rating name plate.
1. Remove the screw (1pc) holding the cover to dismount the cover.
[Fig. 9.3.1] (P.6)
A Screw holding cover (1pc)
2. Open knockout holes
(Recommend to use a screwdriver or the like for this work.)
[Fig. 9.3.2] (P.6)
C Terminal box
E Remove
3. Fix power source wiring to terminal box by using buffer bushing for tensile
force. (PG connection or the like.) Connect transmission wiring to transmis-
sion terminal block through the knockout hole of terminal box using ordinary
bushing.
[Fig. 9.3.3] (P.6)
23
F Use PG bushing to keep the weight of the cable and external force from being
applied to the power supply terminal connector. Use a cable tie to secure the
cable.
G Power source wiring
I Transmission wiring
K Side frame
M Washer (round) (accessory)
Local switch (A)
Breaker for wiring (A)
(Non-fuse breaker)
Capacity
Fuse
16
16
25
25
32
32
SAMPLE
1
20
2
3
4
6
8
10
C
Rated Tripping current (x)
Sample chart
B Cover
D Knockout hole
© 2022 Mitsubishi Electric US, Inc.
H Use ordinary bushing
J Conduit
L Knockout hole (for power source wiring)
20
30
40
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