Wiring Of Main Power Supply And Equipment Capacity; Test Run; The Following Phenomena Do Not Represent Trouble (Emergency); Information On Rating Plate - Mitsubishi CITY MULTI PUHY-P-YSGM-A Installation Manual

10.4. Wiring of main power supply and equipment capacity

Schematic Drawing of Wiring (Example)
[Fig. 10.4.1] (P.5)
A Switch (Breakers for wiring and current leakage)
D Pull box
Thickness of wire for main power supply and On/Off capacities
PUHY-P700
PUHY-P750
Outdoor unit
PUHY-P800
PUHN-P01
16 A or less
Total operating current
25 A or less
of the indoor unit
32 A or less
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. Specific 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 flexible cord (design 245 IEC57). For example,
use wiring such as YZW.
6. A switch with at least 3 mm contact separation in each pole shall be provided by the Air conditioner installation.
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 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 fire.

11. Test run

11.1. The following phenomena do not represent trouble (emergency)

Phenomenon
Indoor unit does not the perform cooling (heat-
ing) operation.
The auto vane runs freely.
Fan setting changes during heating.
Fan stops during heating operation.
Fan does not stop while operation has been
stopped.
No setting of fan while start SW has been
turned on.
Indoor unit remote controller shows "HO" in-
dicator for about five minutes when turning
ON universal power supply.
Drain pump does not stop while unit has been
stopped.
Drain pump continues to operate while unit
has been stopped.
It does not get cold/warm.

12. Information on rating plate

Model
Refrigerant (R410A) kg
Allowable pressure (Ps)
Net weight kg
MANUFACTURER: MITSUBISHI ELECTRIC CORPORATION
AIR-CONDITIONING & REFRIGERATION SYSTEMS WORKS 5-66, TEBIRA, 6-CHOME, WAKAYAMA CITY, JAPAN
14
B Breakers for current leakage
E Indoor unit
2
Minimum wire thickness (mm )
Main cable Branch
Ground
16.0 16.0 16.0
16.0 16.0 16.0
16.0 16.0 16.0
1.0 1.0 1.0
1.5 1.5 1.5
2.5 2.5 2.5
4.0 4.0 4.0
Display of remote controller
"Cooling (heating)" flashes
Normal display
Normal display
Defrost display
No lighting
Heat ready
"HO" flashes
Light out
Normal display
PUHY-P700
27.0
430
Switch (A)
Capacity Fuse
70 70
70 70
70 70
10 10
16 16
25 25
32 32
When another indoor unit is performing the heating (cooling) operation, the cool-
ing (heating) operation is not performed.
Because of the control operation of auto vane, it may change over to horizontal
blow automatically from the downward blow in cooling in case the downward
blow operation has been continued for 1 hour. At defrosting in heating, hot adjust-
ing and thermostat OFF, it automatically changes over to horizontal blow.
Ultra-low speed operation is commenced at thermostat OFF.
Light air automatically changes over to set value by time or piping temperature at
thermostat ON.
The fan is to stop during defrosting.
Fan is to run for 1 minute after stopping to exhaust residual heat (only in heating).
Ultra low-speed operation for 5 minutes after SW ON or until piping temperature
becomes 35°C, low speed operation for 2 minutes thereafter, and then set notch
is commenced. (Hot adjust control)
System is being driven.
Operate remote controller again after "HO" disappear.
After a stop of cooling operation, unit continues to operate drain pump for three
minutes and then stops it.
Unit continues to operate drain pump if drainage is generated, even during a
stop.
When running an operation for the first time within 12 hours of power on, sup-
press the operation capacity of the compressor for a minimum of 45 minutes to
secure enough oil in the compressor.
PUHY-P750 PUHY-P800
27.0 27.0
HP: 4.15 MPa, LP: 2.21 MPa
430
C Outdoor unit
Breaker for
Breaker for current leakage
wiring (NFB)
75 75 A 100 mA 0.1sec. or less
75 75 A 100 mA 0.1sec. or less
75 75 A 100 mA 0.1sec. or less
16 16 A 30 mA 0.1sec. or less
20 20 A 30 mA 0.1sec. or less
30 30 A 30 mA 0.1sec. or less
40 40 A 30 mA 0.1sec. or less
Cause
PUHN-P01
–
430 155