Multi Variable Air Conditioners Ducted Type Indoor Unit 
14 
 
Fig.4.4.2 Air-return Opening 
Unit: mm
 
Model 
Size of Air-return Opening 
GMV-ND56~80PHS/B-T  195  751  25    264  960  29   
(2)  Installation of Air-out Duct 
 
Fig.4.4.3 
4.4.2 Installation of the Return Air Duct 
(1)  The default installation location of the rectangular flange is at the back and the return air 
cover plate is at the bottom, as shown in Fig.4.4.4. 
 
Fig.4.4.4 
(2)  If the bottom return air is desired, just change the place of the rectangular flange and the 
return air cover plate. 
(3)  Connect one end of the return air duct to the return air outlet of the unit by rivets and the 
other to the return air louver. For the sake of the convenience to freely adjust the height, a 
cutting of canvas duct will be helpful, which can be reinforced and folded by 8# iron wire.