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Minimum wire thickness (mm
Model
Main cable
PUHY-(P)400
10.0
PUHY-(P)500
16.0
4.0
PUHN-(P)200
PUHN-(P)250
6.0
Model
Total operating
16 A or less
current of the
25 A or less
indoor units
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 with 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).
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.
Outdoor unit does not operate by turning
switch on.
Indoor unit remote controller shows "HO" in-
dicator for about two 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.
When the variable capacity unit is running,
the fan of the constant capacity unit runs even
though the constant capacity unit isn't run-
ning.
20
2
Switch (A)
)
Branch
Ground
Capacity
–
10.0
63
–
16.0
63
–
4.0
32
–
6.0
40
Wire thickness (mm
2
)
Main cable
Branch
Ground
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
Normal display
"HO" flashes
Light out
Normal display
Breaker for wiring (NFB)
Fuse
63
75 A
63
32
40 A
40
Switch (A)
Breaker for wiring (NFB)
Capacity
Fuse
20 A
16
16
25
25
30 A
32
32
40 A
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)
When the outdoor unit is being cooled and the refrigerant is resting, warming up
operation is performed for at least 35 minutes to warm the compressor.
During this time, only the fan operates.
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.
The fan of constant capacity unit is run automatically in order not to accumulate
the refrigerant.
Breaker for current leakage
75 A 100 mA 0.1 sec. or less
30 A 100 mA 0.1 sec. or less
40 A 100 mA 0.1 sec. or less
Breaker for current leakage
20 A 30 mA 0.1 sec. or less
30 A 30 mA 0.1 sec. or less
40 A 30 mA 0.1 sec. or less
Cause
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