Electrical Work; Power Supply Wiring - Mitsubishi Electric CITY MULTI PMFY-P06NBMU-E Manual De Instalación

5. Electrical work

Cover
Electrical box
Terminal block for power supply
Terminal block for transmission cable
Control board
Address board
Secure with the wiring clamp
Terminal block for MA Remote controller
Plate for conduit
Screw (M4×12)
Glass tube
Band (Short)
Fig. 5-1
A B
~230V
A
~230V
Fig. 5-2
Total operating current of the indoor unit
F0 = 15A or less *2
F0 = 20A or less *2
F0 = 30A or less *2
Apply to IEC61000-3-3 about max. permissive system impedance.
*1 The Ground-fault interrupter should support inverter circuit.
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 current 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}
Indoor unit
Type 1 PLFY-NBMU, PMFY-NBMU, PEFY-NMSU,
PCFY-NKMU, PKFY-NHMU, PKFY-NKMU
Type 2 PEFY-NMAU
Type 3 PEFY-NMHSU
Others Other indoor unit
C : Multiple of tripping current at tripping time 0.01s
Please pick up "C" from the tripping characteristic of the breaker.
<Example of "F2" calculation>
*Condition PEFY-NMSU × 4 + PEFY-NMAU × 1, C = 8 (refer to right sample chart)
F2 = 18.6 × 4/8 + 38 × 1/8
= 14.05
→ 16A breaker (Tripping current = 8 × 16A at 0.01s)
*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 Current sensitivity
30 or less 30 mA 0.1sec or less
100 or less 100 mA 0.1sec or less
2
Wire thickness (mm /AWG)
2.1/14
3.3/12
5.3/10
8
D
C C C C C
B D
L1 L2 GR M1 M2 S 1 2
C
TB2 TB5 TB15
Minimum wire thickness (mm²/AWG)
Main cable Branch
2.1/14 2.1/14
3.3/12 3.3/12
5.3/10 5.3/10
V1 V2
18.6 2.4
38 1.6
13.8 4.8
0
V3
48
56
66
5.1. Electric wiring (Fig. 5-1)
* Make sure all electrical wiring is complete before installing the cover panel.
1. Secure the provided sheet metal for conduit with provided screws to the side of
the unit (two screws).
2. Remove the cover from the address board (two screws).
3. Remove the cover from the electrical box (one screw).
4. Remove the screws securing the electrical box and lower the box (two screws).
5. Insert the wires into the electrical box.
6. Connect the wires securely to the terminal block.
* Be sure to make the various wires long enough so the box may be lowered from
the unit during servicing.
7. Secure the wires with the wiring clamp on the side of the electrical box.
8. Replace the parts you have removed to their original locations.
A means for the disconnection of the supply with an isolation switch, or similar de-
vice, in all active conductors shall be incorporated in the fi xed wiring.

5.2. Power supply wiring

• Install an earth line longer than other cables.
• Power supply codes of appliance shall not be lighter than design 245IEC57 or
227IEC57, 245 IEC 53 or 227 IEC 53.
• A switch with at least 3 mm, 1/8 inch contact separation in each pole shall be
provided by the air conditioner installation.
[Fig. 5-2]
Ground-fault interrupter
A
Local switch/Wiring breaker
B
Indoor unit
C
Pull box
D
Ground Capacity Fuse
2.1/14 15
3.3/12 20
5.3/10 30
0
Breaker for wiring
Ground-fault interrupter *1
(NFB)
15 15 15A current sensitivity *3
20 20 20A current sensitivity *3
30 30 30A current sensitivity *3
Sample chart
6000
600
60
10
1
0.1
0.01
1
Rated Tripping current (x)
SAMPLE
2 3 4 6 8 10 20
C