Electrical Work - Mitsubishi Electric City Multi PKFY-P NHMU-E2 Série Manuel D'installation

6. Electrical work

PKFY-P·NHMU-E2
K
L
J G
J K L
M
O P N Q
Fig. 6-1
A B
~230V
A
~230V
Fig. 6-2
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.
8
C
F
E
D
15/32 inch
2-11/64 inch
L1 L2 GR
R
L
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
6.1. Electric wiring
PKFY-P·NHMU-E2 (Fig. 6-1)
Connection can be made without removing the front panel.
1. Open the front grille, remove the screw (1 piece), and remove the electrical
parts cover.
A
* Electrical work can be conducted more effectively with the panel removed.
When attaching the panel, check that the hooks M at five locations on the air
B
outlet side are connected securely.
2. Securely connect each wire to the terminal board.
* In consideration of servicing, provide extra length for each of the wires.
* Take care when using strand wires, because beards may cause the wiring to
short out.
3. Install the parts that were removed back to their original condition.
4. Fasten each of the wires with the clamp under the electrical parts box.
Electrical box cover
A
B Fixing screw
C Ground wire connection portion
D MA remote control terminal board: (1, 2) do not have polarity
E Transmission terminal board:
Power supply terminal board (L1, L2, GR).
F
G Lead
Ground wire: Connect the ground wire in the direction illustrated in the diagram.
I
J MA remote controller
K Transmission cable
L Power supply cable
M Hook
Conduit plate
N
C
O Bush (purchased locally)
Lock nut (purchased locally)
P
I
Q Connector (purchased locally)
R Conduit (purchased locally)
6.2. 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. 6-2]
A Ground-fault interrupter
Local switch/Wiring breaker
B
C Indoor unit
Pull box
D
Ground Capacity Fuse
2.1/14 15
3.3/12 20
5.3/10 30
0
(M1, M2, S) do not have polarity
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