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•  Do not install the unit in excessive oil fume area 

such as kitchen, workshop and etc. 

•  There should not be any heat source or steam 

near the unit. 

•  There should not be any obstacles blocking the air 

circulation. 

•  A place where air circulation in the room is good. 

•  A place where drainage can be easily done. 

•  A place where noise prevention is taken into 

consideration. 

•  Do not install the unit near the door way. 

•  Ensure the spaces indicated by arrows from the 

wall, ceiling, fence or other obstacles. 

•  Recommended installation height for indoor unit 

shall be at least 2.5 m. 

 

•  If an awning is built over the unit to prevent direct 

sunlight or rain, be careful that heat radiation from 
the condenser is not obstructed. 

•  There should not be any animal or plant which 

could be affected by hot air discharged.  

•  Keep the spaces indicated by arrows from wall, 

ceiling, fence or other obstacles. 

•  Do not place any obstacles which may cause a 

short circuit of the discharged air. 

•  If piping length is over the [piping length for 

additional gas], additional refrigerant should be 
added as shown in the table. 
 

 

 
Example: For PW18*** 
If the unit is installed at 10 m distance, the quantity of 
additional refrigerant should be 50 g….(10-7.5) m x 20 
g/m = 50 g. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 

 

 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

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The mounting wall is strong and solid enough to prevent if from the vibration. 

 

 

Dimension 

Model 

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1

 

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2

 

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3

 

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4

 

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5

 

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6

 

PW18***, 

PW24*** 

585mm 82mm 165mm 158mm 169mm 219mm 

 
The centre of installation plate should be at more than c at right and left of the wall. 
The distance from installation plate edge to ceiling should more than d. 
From installation plate left edge to unit’s left side is e. 
From installation plate right edge to unit’s right side is f. 
 

○

B  

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

 

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

 

1  Mount the installation plate on the wall with 5 screws or more (at least 5 screws).  

(If mounting the unit on the concrete wall, consider using anchor bolts.)  

o

  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 ø70mm hole-core drill. 

o

 

Putting measuring tape at position as shown in the diagram above.  
The hole centre is obtained by measuring the distance namely 128 mm for left and right hole 
respectively. Another method is intersection point of arrow mark extension. 
The meeting point of the extension arrow mark is the hole center position. 

o

 

Drill the piping hole at either the right or the left and the hole should be slightly slanting to the outdoor 
side. (refer to step 11.2.2) 

 

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. 

 
 

 

 

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(This can be used for left rear piping and bottom 
piping also.