14.2.6.5 Install the air duct 
Please design the air duct as below 
recommended picture 
 
14.2.7 New cassette indoor unit 
installation 
14.2.7.1 Service space for indoor unit 
 
 
 
 
 
 
14.2.7.2 Bolt pitch 
 
 
14.2.7.3 Install the pendant bolt 
Select the position of installation hooks 
according to the hook holes positions showed 
in upper picture. 
Drill four holes of Ø12mm, 12 cm 
~15.5cm(4.7”-6.1”) deep at the ceiling hook 
positions in the internal ceiling. Be   
sure to hold the drill at a 90° angle to the 
ceiling. 
Using a hammer, insert the ceiling hooks into   
the pre-drilled holes. Secure the bolt using the   
included washers and nuts. 
Install the four suspension bolts. 
   
14.2.5.4 Install the main body 
Make the 4 suspender through the 4 hanger of 
the main body to suspend it. Adjust the