MXZ-SM36NAMHZ Service Manual

136
OCH789
Total operating current
of the indoor unit
Minimum wire thickness (mm
2
/AWG)
Ground-fault interrupter
*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}
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 second or less
100 or less 100 mA 0.1 second 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 example, use wiring such as YZW.
6. Install an earth line longer than power cables.
6000
600
60
10
1
0.1
0.01
1 2 3 4 6 8
C
10 20
Sample chart
Tripping Time [s]
Rated Tripping current (x)
SAMPLE
9-3. DESIGN FOR CONTROL WIRING
Please note that the types and numbers of control wires needed by MULTI-S series depend on the remote controllers
and whether they are linked with the system or not.
9-3-1. Selection number of control wires
M-NET remote controller
Use
Remote controller used in system control operations
• Group operation involving different refrigerant systems
• Linked operation with upper control system
Remote controller → indoor unit
2-core wire (non-polar)
Transmission wires
Wires connecting → indoor units
Wires connecting → indoor units with outdoor unit
Wires connecting → outdoor units