MXZ-SM48NAMHZ Installation Manual

17
6. Electrical work
Indoor unit V1 V2
Type 1 PEAD-A·AA, SVZ-A·AA 26.9
2.4
Type 2 PLA-A·EA7, SEZ-KD·NA 19.8
Type 3 SLZ-KF·NA 17.1
Type 4 MLZ-KP·NA (2) 9.9
Type 5 MFZ-KJ·NA, MSZ-GL·NA, MSZ-FS·NA 7.4
Type 6 MSZ-FH·NA, MSZ-FH·NA2, MSZ-EF·NAW(B)(S)-U1 6.8
Type 7 Branch box 5.1 3.0
Type 8 PEFY-P·NMAU-E3, PVFY-P·NAMU 38.0 1.6
Type 9
PKFY-P·NHMU, PKFY-P·NKMU, PEFY-P·NMSU, PCFY-P·NKMU,
PLFY-EP·NEMU, PLFY-P·NFMU, PMFY-P·NBMU, PKFY-P·NLMU
19.8 2.4
Type 10 PKFY-P·NBMU, PLFY-P·NCMU 3.5 2.4
Type 11 PEFY-P·NMHU, PFFY-P·NEMU, PFFY-P·NRMU 0.0 0.0
Type 12 PEFY-P·NMHSU (connected to MXZ-SM60 only) 13.8 4.8
Type 13 PEFY-P·NMAU-E4 18.6 3.0
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 = 19.8 × 4/8 + 38 × 1/8
= 14.65
 →16Abreaker(Trippingcurrent=8×16Aat0.01s)
*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 Type13)
+ V3 × (Wire length [km])
G1 Current sensitivity
30 or less 30 mA 0.1 sec or less
100 or less 100 mA 0.1 sec or less
Wire thickness (mm
2
/AWG) V3
2.1/14 48
3.3/12 56
5.3/10 66
1. Use a separate power supply for the outdoor unit and indoor unit.
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. The power cord size should be 1 rank thicker consideration of voltage drops.
Make sure the power-supply voltage does not drop more than 10%.
4. Specic wiring requirements should adhere to the wiring regulations of the region.
5. Power supply cords of parts of appliances for outdoor use shall not be lighter than polychloroprene sheathed exible cord (design 60245 IEC57). For exam-
ple, use wiring such as YZW.
6. Install an earth longer than other cables.
Warning:
• Be sure to use specied wires to connect so that no external force is imparted to terminal connections. If connections are not xed rmly, it may cause
heating or re.
• Be sure to use the appropriate type of overcurrent protection switch. Note that generated overcurrent may include some amount of direct current.
• Be sure to attach the terminal block covers/panel of the outdoor unit securely.
If it is not attached correctly, if could result in a re or an electric shock due to dust, water. etc.
Caution:
• Be careful not to make mis-wiring.
• Firmly tighten the terminal screws to prevent them from loosening.
• After tightening, pull the wires lightly to conrm that they not move.
• If the connecting wire is incorrectly connected to the terminal block, the unit does not operate normally.
• Some installation site may require attachment of an earth leakage breaker. If no earth leakage breaker is installed, it
may cause an electric shock.
• Do not use anything other than breaker and fuse with correct capacity. Using fuse and wire or copper wire with too
large capacity may cause a malfunction of unit or re.
• Properly route wiring so as not to contact the sheet metal edge or a screw tip.
6000
600
60
10
1
1 23468
C
10 20
Sample chart
Tripping Time [s]
Rated Tripping current (x)
0.01
0.1
SAMPLE
Connection details
Lead wire
Terminal
block
Loosen terminal screw.
Total operating current of the indoor unit
Minimum wire thickness (mm
2
/AWG)
Ground-fault interruper *1
(if you use)
Local switch (A)
Breaker for wiring
(NFB)
Main Cable Branch Ground Capacity Fuse
F0 = 15 A or less *2 2.1/14 2.1/14 2.1/14 15 A current sensitivity *3 15 15 15
F0 = 20 A or less *2 3.3/12 3.3/12 3.3/12 20 A current sensitivity *3 20 20 20
F0 = 30 A or less *2 5.3/10 5.3/10 5.3/10 30 A current sensitivity *3 30 30 30
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 Type4)/C} + … + {V1 × (Quantity of Type13)/C}
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