Wiring Of Main Power Supply And Equipment Capacity; Test Run; Test Run Method; Corrective Actions In Case Of Trouble During Test Runs - Mitsubishi Electric CITY MULTI PUMY-71 Manuel D'installation

8.5. Wiring of main power supply and equipment capacity

• Schematic Drawing of Wiring (Example)
Switch (Breakers for Wiring
and Current Leakage)
Power Supply
(Single phase 220-240 V, 50 Hz)
(Single phase 220V, 60Hz)
MODEL: PUMY-VM
(3 phase 380-415V, 50Hz)
(3 phase 380V, 60Hz)
MODEL: PUMY-YM (A) Switch (Breakers for Wiring
and Current Leakage)
Power Supply
(Single phase 220-240 V, 50 Hz)
(Single phase 220V, 60Hz)
• Thickness of Wire for Main Power Supply and On/Off Capacities
Minimum Wire Thickness (mm
Main Cable
Model
PUMY-71VM 5.5
PUMY-125VM
14
PUMY-125YM (A) 2.5
Wire Thickness (mm)
Main
Branch Ground
Model Cable
All Models ø1.6
• Grounding
Make sure to ground the unit. Connect the grounding wire only to the power supply grounding terminal of the unit.
Warning:
• Be sure to use specified wires to connect so that no external force is imparted to terminal connections. If connections are not fixed firmly,
it may cause heating or fire.
• Be sure to use the appropriate type of overcurrent protection switch. Note that generated overcurrent may include some amount of direct
current.
Caution:
• Some installation sites 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 malfunction of the unit or fire.

9. Test run

9.1. Test run method

Refer to the "Test run" section of the Installation Manual of the indoor unit.

9.2. Corrective actions in case of trouble during test runs

• When trouble occurs during test runs, a check code will be displayed in the pre-set temperature display section of the remote controller (and the LD1
on the outdoor unit) and the unit will stop. Check the feature of the trouble and eliminate the cause.
Outdoor
Unit
Indoor
Unit
2 )
Breaker
for Wiring Breaker for Current Leakage
Branch Ground
– 3.5 30A
100A
– 5.5
– 2.5 25A
Breaker for
Breaker for Current Leakage
Wiring
ø1.6 15A 15A 30 mA 0.1 sec or less
–
Ground
ø1.6 mm (2 mm 2 )or more
Indoor Indoor
Unit Unit
Ground
30A 30 mA 0.1 sec. or less
100A 100 mA 0.1 sec. or less
25A 30 mA 0.1 sec. or less
Pull Box
Indoor Indoor
Unit Unit
19