24
GB
11.4. Wiring of main power supply and equipment capacity
Schematic Drawing of Wiring (Example)
[Fig. 11.4.1]
ZKMU: 3~575V
L
1
, L
2
, L
3
~208-230V
L
1
, L
2
Ground
Ground
Ground
Ground
Ground
A
C
D
E
E
E
E
B
A
B
A
Switch (Breakers for wiring and current leakage)
B
Breakers for current leakage
C
Outdoor unit
D
Pull box
E
Indoor unit
Thickness of wire for main power supply, on/off capacities
MOP is used to select the fuse, switch, or breaker for current leakage.
<Power source: 575V>
Model
Unit combination
Recommended setting
MCA
(A)
MOP
(A)
Minimum wire thickness (mm
2
[AWG])
Main cable Branch
Ground
Outdoor
unit
PUHY-P72ZKMU-A(-BS)
–
2.1 [14]
–
2.1 [14]
11
15
PUHY-P96ZKMU-A(-BS)
–
2.1 [14]
–
2.1 [14]
15
20
PUHY-P120ZKMU-A(-BS)
–
3.3 [12]
–
3.3 [12]
19
30
PUHY-P144ZKMU-A(-BS)
–
5.3 [10]
–
5.3 [10]
21
30
PUHY-P168ZSKMU-A(-BS)
PUHY-P96ZKMU-A(-BS)
2.1 [14]
–
2.1 [14]
15
20
PUHY-P72ZKMU-A(-BS)
2.1 [14]
–
2.1 [14]
11
15
PUHY-P192ZSKMU-A(-BS)
PUHY-P120ZKMU-A(-BS)
3.3 [12]
–
3.3 [12]
19
30
PUHY-P72ZKMU-A(-BS)
2.1 [14]
–
2.1 [14]
11
15
PUHY-P216ZSKMU-A(-BS)
PUHY-P120ZKMU-A(-BS)
3.3 [12]
–
3.3 [12]
19
30
PUHY-P96ZKMU-A(-BS)
2.1 [14]
–
2.1 [14]
15
20
PUHY-P240ZSKMU-A(-BS)
PUHY-P120ZKMU-A(-BS)
3.3 [12]
–
3.3 [12]
19
30
PUHY-P120ZKMU-A(-BS)
3.3 [12]
–
3.3 [12]
19
30
PUHY-P264ZSKMU-A(-BS)
PUHY-P120ZKMU-A(-BS)
3.3 [12]
–
3.3 [12]
19
30
PUHY-P72ZKMU-A(-BS)
2.1 [14]
–
2.1 [14]
11
15
PUHY-P72ZKMU-A(-BS)
2.1 [14]
–
2.1 [14]
11
15
PUHY-P288ZSKMU-A(-BS)
PUHY-P120ZKMU-A(-BS)
3.3 [12]
–
3.3 [12]
19
30
PUHY-P96ZKMU-A(-BS)
2.1 [14]
–
2.1 [14]
15
20
PUHY-P72ZKMU-A(-BS)
2.1 [14]
–
2.1 [14]
11
15
PUHY-P312ZSKMU-A(-BS)
PUHY-P120ZKMU-A(-BS)
3.3 [12]
–
3.3 [12]
19
30
PUHY-P120ZKMU-A(-BS)
3.3 [12]
–
3.3 [12]
19
30
PUHY-P72ZKMU-A(-BS)
2.1 [14]
–
2.1 [14]
11
15
PUHY-P336ZSKMU-A(-BS)
PUHY-P120ZKMU-A(-BS)
3.3 [12]
–
3.3 [12]
19
30
PUHY-P120ZKMU-A(-BS)
3.3 [12]
–
3.3 [12]
19
30
PUHY-P96ZKMU-A(-BS)
2.1 [14]
–
2.1 [14]
15
20
PUHY-P360ZSKMU-A(-BS)
PUHY-P120ZKMU-A(-BS)
3.3 [12]
–
3.3 [12]
19
30
PUHY-P120ZKMU-A(-BS)
3.3 [12]
–
3.3 [12]
19
30
PUHY-P120ZKMU-A(-BS)
3.3 [12]
–
3.3 [12]
19
30
1. Use dedicated power supplies for the outdoor unit and indoor unit. Ensure OC and OS are wired individually.
2. Bear in mind ambient conditions (ambient temperature, direct sunlight, rain water, etc.) when proceeding with the wiring and connections.
3. The wire size is the minimum value for metal conduit wiring. If the voltage drops, use a wire that is one rank thicker in diameter.
Make sure the power-supply voltage does not drop more than 10%. Make sure that the voltage imbalance between the phases is 2% or less.
6SHFL¿FZLULQJUHTXLUHPHQWVVKRXOGDGKHUHWRWKHZLULQJUHJXODWLRQVRIWKHUHJLRQ
3RZHUVXSSO\FRUGVRISDUWVRIDSSOLDQFHVIRURXWGRRUXVHVKDOOQRWEHOLJKWHUWKDQSRO\FKORURSUHQHVKHDWKHGÀH[LEOHFRUGGHVLJQ,(&)RU
example, use wiring such as YZW.
6. A switch with at least 3 mm [1/8 in] contact separation in each pole shall be provided by the Air conditioner installation.
7. Indicated MCA and MOP does not consider current value of separately sold base heater.
Warning:
%HVXUHWRXVHVSHFL¿HGZLUHVIRUFRQQHFWLRQVDQGHQVXUHQRH[WHUQDOIRUFHLVLPSDUWHGWRWHUPLQDOFRQQHFWLRQV,IFRQQHFWLRQVDUHQRW¿[HG¿UPO\
KHDWLQJRU¿UHPD\UHVXOW
Be sure to use the appropriate type of overcurrent protection switch. Note that generated overcurrent may include some amount of direct current.
Caution:
The breakers for current leakage should support Inverter circuit. (e.g. Mitsubishi Electric's NV-C series or equivalent). If no earth leakage breaker is
installed, it may cause an electric shock.
Breakers for current leakage should combine using of switch.
Do not use anything other than a breaker
ZLWKWKHFRUUHFWFDSDFLW\8VLQJDEUHDNHURIWRRODUJHFDSDFLW\PD\FDXVHPDOIXQFWLRQRU¿UH
,IDODUJHHOHFWULFFXUUHQWÀRZVGXHWRPDOIXQFWLRQRUIDXOW\ZLULQJHDUWKOHDNDJHEUHDNHUVRQWKHXQLWVLGHDQGRQWKHXSVWUHDPVLGHRIWKHSRZHUVXSSO\
system may both operate.
Depending on the importance of the system, separate the power supply system or take protective coordination of breakers.
