Wiring Of Main Power Supply And Equipment Capacity - Mitsubishi Electric City Multi PURY-HP72TKMU-A-H Installation Manual

11.4. Wiring of main power supply and equipment capacity

Schematic Drawing of Wiring (Example)
[Fig. 11.4.1]
B
TKMU: 3~208-230V
YKMU: 3~460V
L , L , L
1 2 3
B
~208–230V
L , L
1 2
A Switch (Breakers for wiring and current leakage)
D Pull box
Thickness of wire for main power supply, ON/OFF capacities
Model
PURY-HP72TKMU-A-H(-BS)
PURY-HP96TKMU-A-H(-BS)
Outdoor unit PURY-HP144TSKMU-A-H(-BS)
PURY-HP192TSKMU-A-H(-BS)
PURY-HP72YKMU-A-H(-BS)
PURY-HP96YKMU-A-H(-BS)
Outdoor unit PURY-HP144YSKMU-A-H(-BS)
PURY-HP192YSKMU-A-H(-BS)
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.
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 when the Air Conditioner is installed.
Warning:
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.
system may both operate.
Depending on the importance of the system, separate the power supply system or take protective coordination of breakers.
A
C
D
Ground
F
A
E E E
Ground Ground Ground
B Breakers for current leakage
E Indoor unit
Minimum wire thickness
Unit combination
Main
cable
- 13.3 [6]
- 21.2 [4]
PURY-HP72TKMU-A-H(-BS) 13.3 [6]
PURY-HP72TKMU-A-H(-BS) 13.3 [6]
PURY-HP96TKMU-A-H(-BS) 21.2 [4]
PURY-HP96TKMU-A-H(-BS) 21.2 [4]
- 5.3 [10]
- 5.3 [10]
PURY-HP72YKMU-A-H(-BS) 5.3 [10]
PURY-HP72YKMU-A-H(-BS) 5.3 [10]
PURY-HP96YKMU-A-H(-BS) 5.3 [10]
PURY-HP96YKMU-A-H(-BS) 5.3 [10]
F'
E
Ground
C Outdoor unit
F BC controller (standard or main)
Recommended setting
Switch
MAX.
(mm 2 [AWG]) (A)
CKT.
BKR (A)
Branch Ground Capacity
- 13.3 [6] 60 60
- 21.2 [4] 80 80
- 13.3 [6] 60 60
- 13.3 [6] 60 60
- 21.2 [4] 80 80
- 21.2 [4] 80 80
- 5.3 [10] 30 30
- 5.3 [10] 35 35
- 5.3 [10] 30 30
- 5.3 [10] 30 30
- 5.3 [10] 35 35
- 5.3 [10] 35 35
F' BC controller (sub)
MCA MOCP
(A)
Breaker for current leakage
60A 100mA 0.1sec. or less 44/40 76/69
80A 100mA 0.1sec. or less 60/54 104/94
60A 100mA 0.1sec. or less 44/40 76/69
60A 100mA 0.1sec. or less 44/40 76/69
80A 100mA 0.1sec. or less 60/54 104/94
80A 100mA 0.1sec. or less 60/54 104/94
30A 100mA 0.1sec. or less 26
35A 100mA 0.1sec. or less 32
30A 100mA 0.1sec. or less 26
30A 100mA 0.1sec. or less 26
35A 100mA 0.1sec. or less 32
35A 100mA 0.1sec. or less 32
27
(A)
45
56
45
45
56
56