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Decide piping length and then cut by using pipe cutter. 
Remove burrs from cut edge. 
Make flare after inserting the flare nut (locate at valve) 
onto the copper pipe. 
Align center of piping to valve and then tighten with 
torque wrench to the specified torque as stated in the 
table. 

 

 

 

 
* For Gas side piping please refer table and diagram below 
 

 

 
* Kindly consult authorised dealer for connectivity validity. 
 

1  Please cut using pipe cutter and then remove the burrs. 
2  Remove the burrs by using reamer. If burrs is not removed, gas leakage may be caused. 

Turn the piping end down to avoid the metal powder entering the pipe. 

3  Please make flare after inserting the flare nut onto the copper pipes. 

 

 

 

WHEN INSTALLING AN AIR CONDITIONER, BE SURE TO EVACUATE THE AIR INSIDE THE INDOOR UNIT AND 
PIPES in the following procedure. 
 

 

 

1  Connect a charging hose with a push pin to the Low side of a charging set and the service port of the 3-way 

valve. 

o

 

Be sure to connect the end of the charging hose with the push pin to the service port. 

2  Connect the center hose of the charging set to a vacuum pump. 
3  Turn on the power switch of the vacuum pump and make sure that the needle in the gauge moves from 

0 cmHg (0 MPa) to -76 cmHg (-0.1 MPa). Then evacuate the air approximately ten minutes. 

4  Close the Low side valve of the charging set and turn off the vacuum pump. Make sure that the needle in the 

gauge does not move after approximately five minutes. 
Note : BE SURE TO TAKE THIS PROCEDURE IN ORDER TO AVOID REFRIGERANT GAS LEAKAGE. 

5  Disconnect the charging hose from the vacuum pump and from the service port of the 3-way valve. 
6  Tighten the service port caps of the 3-way valve at a torque of 18 N•m with a torque wrench. 

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7  Remove the valve caps of both of the 2-way valve and 3-way valve. Position both of the valves to “OPEN” 

using a hexagonal wrench (4 mm). 

8  Mount valve caps onto the 2-way valve and the 3-way valve. 

o

 

Be sure to check for gas leakage. 

 

 

If gauge needle does not move from 0 cmHg (0 MPa) to -76 cmHg (-0.1 MPa), in step  above take the following measure: 

 

If the leak stops when the piping connections are tightened further, continue working from step . 

 

If the leak does not stop when the connections are retightened, repair the location of leak. 

 

Do not release refrigerant during piping work for installation and reinstallation. 

 

Take care of the liquid refrigerant, it may cause frostbite. 

 

(FOR DETAIL REFER TO WIRING DIAGRAM AT UNIT) 
1  Remove the control board cover from the unit by loosening the screw. 
2  Cable connection to the power supply through Isolating Devices (Disconnecting means). 

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Connect approved type polychloroprene sheathed power supply cord 3 x 1.5 mm

2

 type designation 

60245 IEC 57 or heavier cord to the terminal board, and connect the others end of the cord to Isolating 
Devices (Disconnecting means). 

3  Connection cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 4 x 

1.5 mm

2

 flexible cord, type designation 60245 IEC 57 or heavier cord. Allowable connection cable length of 

each indoor unit shall be 30 m or less. 

4  Connect the power supply cord and connection cable between indoor unit and outdoor unit according to the 

diagram below. 

 

 

 

5  Secure the power supply cord and connection cable onto the control board with the holder. 
6  Attach the control board cover back to the original position with screw. 
7  For wire stripping and connection requirement, refer to instruction 11.1.6 of indoor unit. 

 

 

 

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Note: Isolating Devices (Disconnecting means) should have minimum 3.0 mm contact gap. 

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Earth wire shall be Yellow/Green (Y/G) in colour and longer than other AC wires for safety reason. 

 

1  Please carry out insulation at pipe connection portion as mentioned in Indoor/Outdoor Unit Installation 

Diagram. Please wrap the insulated piping end to prevent water from going inside the piping. 

2  If drain hose or connecting piping is in the room (where dew may form), please increase the insulation by 

using POLY-E FOAM with thickness 8 mm or above. 

 
 
 
 
 

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  If a drain elbow is used, the unit should be placed 

on a stand which is taller than 30 mm. 

  If the unit is used in an area where temperature 

falls below 0°C for 2 or 3 days in succession, it is 
recommended not to use a drain elbow, for the 
drain water freezes and the fan will not rotate. 

 

 

 

 

 

  Is there any gas leakage at flare nut connections? 

 

  Is the Earth wire connection done properly? 

 

   

 

   

 

  Has the heat insulation been carried out at flare nut connections? 

 

  Is the power supply voltage complied with the rated value? 

 

   

 

   

 

  Is the connection cable being fixed firmly to the terminal board? 

 

  Is there any abnormal sound emitted? 

 

   

 

   

 

  Is the connection cable being clamped firmly? 

 

  Is the cooling / heating operation normal? 

 

   

 

   

 

  Is the drainage OK? (Refer to the “Check the Drainage” section) 

 

  Is the thermostat operation normal? 

 

   

 

   

 

   

 

  Is the Remote Control’s LCD operation normal? 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

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Inverter control, which equipped with a microcomputer in determining the most suitable operating mode as time 
passes, automatically adjusts output power for maximum comfort always. In order to achieve the suitable operating 
mode, the microcomputer maintains the set temperature by measuring the temperature of the environment and 
performing temperature shifting. The compressor at outdoor unit is operating following the frequency instructed by 
the microcomputer at indoor unit that judging the condition according to internal setting temperature and intake air 
temperature. 

Once the operation starts, remote control setting temperature will be taken as base value for temperature shifting 
processes. These shifting processes are depending on the air conditioner settings and the operation environment. 
The final shifted value will be used as internal setting temperature and it is updated continuously whenever the 
electrical power is supplied to the unit. 
 

 

  Compressor is OFF when Intake Air Temperature - Internal Setting Temperature < -2.0°C continue for 3 minutes. 

  Compressor is ON after waiting for 3 minutes, if the Intake Air Temperature - Internal Setting Temperature > 

Compressor OFF point. 

 

  Compressor is OFF when Intake Air Temperature - Internal Setting Temperate < -2.0°C continue for 3 minutes. 

  Compressor is ON after waiting for 3 minutes, if the Intake Air Temperature - Internal Setting Temperature > 

Compressor OFF point.