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17 

 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

18 

 

 

 

š  Accompanying the changes in the shapes of the 3-way valve caps, the tightening method has also been changed. 

š  Firmly tighten the 3-way valve caps by hand, and then tighten them up by another 30 degrees or so (one-twelfth 

of a full turn) using a spanner or adjustable spanner. 

 

 

 
 
 
 
 
 
 
 
 
 
 

19 

 

 

 

š  Accompanying the changes in the shapes of the 3-way valve caps, the tightening method has also been changed. 

š  Firmly tighten the 3-way valve caps by hand, and then tighten them up by another 30 degrees or so (one-twelfth 

of a full turn) using a spanner or adjustable spanner. 

 

 

 
 
 
 
 
 
 
 
 
 
 
 
 

20 

š  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. 

š  There should not be any animal or plant which 

could be affected by hot air discharged. 

š  Keep the spaces indicated by arrows from wall, 

ceiling, fence or other obstacles. 

š  Do not place any obstacles which may cause a 

short circuit of the discharged air. 

š  If piping length is over the [piping length for 

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

 

Piping size 

Std. 

Length 

(m) 

Min. 

Length 

(m) 

Max. total 

Length 

(m) 

Max. 

Elevation 

(m) 

Additional 

gas charge 

amount 

(g/m) 

Gas 

9.52 mm 

(3/8") 

Liquid 

6.35 mm 

(1/4") 

5 m / 

indoor 

unit 

3 m / 

indoor 

unit 

30 10  15 

Note: 
(1) It is possible to extend the piping length of one unit 
     up to 20 meters. 
     However, the total piping length must not exceed 
     30 meters. 
(2) If the length exceeds 20 meters, refrigerant of 15g 
     per meter must be added. 

 
 

 

 
 
 
 
 
 
 

 

š  If a drain elbow is used, the unit should be placed on a stand which is taller than 3 cm. 

š  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. 

 

 

 

š  After selecting the best location, start installation 

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. 

 
 
 
 
 

 

Model A 

B 

C 

D 

2E15***, 2E18*** 540 mm  160 mm  18.5 mm 330 mm