Mitsubishi Mr.SLIM PU-RP8YHA Manual De Instalación página 12

WIRING SPECIFICATIONS FOR 220-240 V 50 Hz
(INDOOR-OUTDOOR CONNECTING CABLE)
Cross section of cable Wire size (mm
Round
2.5
Flat
2.5
Flat
1.5
Round
2.5
*1 : Power supply cords of appliances shall not be lighter than design 245 IEC or 227
IEC.
*2 : In case that cable with stripe of yellow and green is available.
*3 : In case of regular polarity connection (S1-S2-S3), wire size is 1.5 mm
*4 : In case of regular polarity connection (S1-S2-S3).
*5 : In the flat cables are connected as this picture, they can be used up to 30 m.
Be sure to connect the indoor-outdoor connecting cables directly to the units (no intermediate connections).
Intermediate connections can lead to communication errors if water enters the cables and causes insufficient insulation to ground or a poor electrical contact at the
intermediate connection point.
(If an intermediate connection is necessary, be sure to take measures to prevent water from entering the cables.)
8. Test run
8.1. Before test run
s After completing installation and the wiring and piping of the indoor and outdoor
units, check for refrigerant leakage, looseness in the power supply or control
wiring, wrong polarity, and no disconnection of one phase in the supply.
s Use a 500-volt megohmmeter to check that the resistance between the power
supply terminals and ground is at least 1 MΩ Ω Ω Ω Ω .
s Do not carry out this test on the control wiring (low voltage circuit) terminals.
Insulation resistance
After installation or after the power source to the unit has been cut for an extended
period, the insulation resistance will drop below several MΩ due to refrigerant accu-
mulating in the compressor.
In this case, turn on the power and check that the insulation resistance has recovered
while the unit is operating. By operating the unit, the refrigerant that has accumulated
in the compressor will flow through the refrigerant piping.
Leakage breaker
Always use a current leakage breaker that is compatible with higher harmonics as
this unit is equipped with an inverter.
8.2. Unit replacement operation
s Replacement operation is the operation by which impurities remaining in
the existing piping (chlorinated compounds) are captured by the activated
carbon filter (replacement filter) in the outdoor unit.
• This model will automatically begin the replacement operation after it has been
installed when it enters the initialization phase for normal heating or cooling. How-
ever, the unit will not automatically perform the replacement operation if it is moved
to a new location where it will be used with existing R22 refrigerant piping. Under
such conditions, always use the SW8-2 operations to perform the replacement
operation before beginning the test operation.
Replacement operation procedures (When moving the unit and connecting it
to existing R22 piping.)
1 Supply power.
2 Set DIP switch SW8-2 on the control board of the outdoor unit to ON to start
replacement operation.
* The replacement operation is performed using the cooling system. Cool air will
flow from the indoor unit during the replacement operation.
* During the replacement operation,
and LED1 and LED2 on the control board of the outdoor unit flash together.
3 The duration of the replacement operation is determined by the length of the pip-
ing. Always perform the replacement operation for longer than the stipulated time.
* Always perform one of the following operations at the completion of the re-
placement operation. The replacement operation will end and the unit will auto-
matically stop.
8.3. Test run
8.3.1. Using SW4 in outdoor unit
SW4-1 ON
Cooling operation
SW4-2 OFF
SW4-1 ON
Heating operation
SW4-2 ON
* After performing the test run, set SW4-1 to OFF.
• After power is supplied, a small clicking noise may be heard from the inside of the
outdoor unit. The electronic expansion valve is opening and closing. The unit is not
faulty.
12
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2
) Number of wires
Clockwise : S1-S2-S3
3
* Pay attention to stripe of yellow and green
Not applicable
3
(Because center wire has no cover finish)
4 From left to right : S1-Open-S2-S3
Clockwise : S1-S2-S3-Open
4
*Connect S1 and S3 to the opposite angle
2 .
is displayed on the remote controller
TEST RUN
Polarity
(3C Flat cable × 2)
S1 S2 S3
*6 : Mentioned cable length is just a reference value.
It may be different depending on the condition of installation, Humidity or materi-
als, etc.
Caution:
• The compressor will not operate unless the power supply phase connection
is correct.
s The followings must be checked as well.
• The outdoor unit is not faulty. LED1 and LED2 on the control board of the outdoor
unit flash when the outdoor unit is faulty.
• Both the gas and liquid stop valves are completely open.
• A protective sheet covers the surface of the DIP switch panel on the control board of
the outdoor unit. Remove the protective sheet to operate the DIP switches easily.
• Make sure that the all of the SW5 DIP switches for function changes on the control
board of the outdoor unit are set to OFF. If all of the SW5 switches are not set to
OFF, record the settings and then set all of the switches to OFF. Begin recovering
the refrigerant. After moving the unit to a new location and completing the test run,
set the SW5 switches to the previously recorded settings.
(1)Set SW8-2 from ON to OFF. (When ending a replacement operation of less
than 2 hours.)
• Each time SW8-2 is set from OFF to ON, the replacement operation can be
started. Always perform the replacement operation for longer than the stipu-
lated time.
Required replacement operation times
Piping Length
0 to 20 meters
21 to 30 meters
31 to 70 meters
(2)The replacement operation will automatically stop after 2 hours. (It will end with
SW8-2 still in the ON position.)
• When the replacement operation has ended automatically after 2 hours of
operation, there is no need to set SW8-2 from ON to OFF; normal air condi-
tioning operations can are possible with the SW8-2 set to ON. Furthermore,
to repeat the replacement operation, SW8-2 will have to be returned to OFF
and then set to ON.
* If the indoor temperature is less than 15 °C, the compressor will operate
intermittently but the unit is not faulty.
• A few seconds after the compressor starts, a clanging noise may be heard from the
inside of the outdoor unit. The noise is coming from the check valve due to the small
difference in pressure in the pipes. The unit is not faulty.
The test run operation mode cannot be changed by DIP switch SW4-2 during
the test run. (To change the test run operation mode during the test run, stop
the test run by DIP switch SW4-1. After changing the test run operation mode,
resume the test run by switch SW4-1.)
8.3.2. Using remote controller
Refer to the indoor unit installation manual.
L (m)*6
(30)
*2
Not applicable
*5
(18)
*3
(30)
*4
Replacement
Operation Time
30 minutes or more
45 minutes or more
60 minutes or more