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21 

Wall

Indoor

Outdoor

15 mm

Sleeve for
tube ass’y

Approx. 5 - 7 mm

Bushing for tube ass’y

Putty or caulking compound

Ø 70 through hole

The mounting wall is strong and solid enough to prevent it from the vibration. 
 
The centre of installation plate should be at more 
than 450 mm at right and left of the wall. 
 
The distance from installation plate edge to 
ceiling should more than 120mm. 
 
From installation plate left edge to unit’s left side 
is 170 mm. 
 
From installation plate right edge to unit’s right 
side is 160 mm. 
 

○

B  

: For left side piping, piping connection for liquid should be about 105 mm from this line. 

 

: For left side piping, piping connection for gas should be about 154 mm from this line. 

 

1  Mount the installation plate on the wall with 5 screws or more. (If mounting the unit on the wall, consider 

using anchor bolts.) Always mount the installation plate horizontally by aligning the marking-off line with 
the thread and using a level gauge. 

2  Drill the piping plate hole with ø70 mm hole-core drill. 

z  Put measuring tape at position as shown in the diagram above. The hole centre is 

obtained by measuring the distance namely 178.5 mm and 161 mm for left and right hole 
respectively. 

z  Drill the piping plate hole at either the right or left and the hole should be slightly slanted 

to the outdoor side. 

 

1 

Insert the piping sleeve to the hole. 

2 

Fix the busing to the sleeve. 

3 

Cut the sleeve until it extrudes about 15mm from the wall  
 

 

 

4 

Finish by sealing the sleeve with putty or caulking compound at the 
final stage.  

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

When the wall is hollow, please be sure to use the sleeve for tube 
ass’y to prevent dangers caused by mice biting the connecting 
cable. 

22 

 

 

 

 

 
 
 
 
 

23 

1 

The inside and outside connecting cable can be connected without removing the front grille. 

2 

Connecting cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 4x 
1.5mm

2

 flexible cords, type designation 245 IEC 57 or heavier cord. 

‹  Ensure the color of wires of outdoor unit and the terminal numbers are the same to the indoor’s 

respectively. 

‹  Earth lead wire shall be longer than the other lead wires as shown in the figure for the electrical safety 

in case of the slipping out of the cord from the anchorage. 

 
 
 
 
 
  

‹  Secure the cable onto the board with the holder (clamper). 

‹ 

 

 

3 

Wire stripping and connecting requirement. 

 

 

   

•  After selecting the best location, start installation according to indoor/outdoor unit installation diagram. 

1 

Fix the unit on concrete or rigid frame firmly and horizontally by bolt nut (ø10 mm). 

2 

When installing at roof, please consider strong wind and earthquake. 
Please fasten the installation stand firmly with bolt or nails. 

 
 
 
 

Please make flare after inserting flare nut (locate at joint portion, of tube assembly) onto the copper pipe. (In case of 
using long piping) 
 
 Connect the piping 
•  Align the center of piping and sufficiently tighten the flare nut with fingers. 

•   Further tighten the flare nut with torque wrench in specified torque as stated in the table. 

  
  
 
 
 
 
 

 
 
Connecting the piping to outdoor unit 

A B C D 

570 103.7 13.5  320 

Caution : Do not over tighten, over 
tightening cause gas leakage 

Piping size 

Torque 

6.35mm (1/4”) 

18 N• m (1.8kgf•m) 

9.52mm (3/8") 

42 N• m (4.2kgf•m) 

12.70mm (1/2") 

55 N• m (5.5kgf•m) 

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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 valves and then tighten with torque wrench to 
the specified torque as stated in the table. 

1 

Please cut using pipe cutter and then remove the burrs. 

2 

Remove the burrs by using reamer. If burrs are 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 follwing procidure. 
 

1 

Connect a charging hose with a push pin to the low side of a charging set and the service port at the 3-way 
valve. 
z  Be sure to connect the end of charging hose with the push pin to the service port. 
z  The size of charging hose fitting should be 1/2 UNF, 20 threads. 

2 

Connect the center hose of the charging set to a vacuum pump with check valve, or vacuum pump and 
vacuum pump adaptor. 

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 FOLLOW THIS PROCEDURE IN ORDER TO AVOID REFRIGEANT GAS LEAKAG 

5 

Disconnect the charging horse 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. 

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 (4mm). 

8 

Mount valve caps onto the 2-way and the 3-way valve. 
z  Be sure to check for gas leakage. 
 

 CAUTION:   
●  If gauge needle does not move from  0 cmHg (0 MPa) to -76 cmHg (-0.1 MPa), in step 3 above take the following 

measure: 

●  If the leak stops when the piping connections are tightened further, continue working from step 3. 
●  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. 

Control board cover

Terminal board

Over 5mm

To indoor unit

Liquid side

Gas side

2-way valve

(Open)

Cap

3-way valve (Open)

Hexagonal wrench

Service port cap

Outdoor Unit