Multi Variable Air Conditioners Duct Type Indoor Uni
17
Model
Size of Air Outlet
Size of Air-return Opening
A
B
C
D
E
F
GMV-ND71PLS/A-T
1016
222
21
1050
220
21
GMV-ND80PLS/A-T
GMV-ND90PLS/A-T
1153
207
40
1188
220
22
GMV-ND100PLS/A-T
GMV-ND112PLS/A-T
GMV-ND125PLS/A-T
GMV-ND140PLS/A-T
4.4.3 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 4.4.7.
Fig 4.4.7
(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.
(4) More noise is likely to be produced in the bottom return air mode than the rear return air
mode, so it is suggestive to install a silencer and a static pressure box to minimize the
noise.
(5) The installation method can be choosen with considering the conditions of the building and
maintenance etc., as shown in Fig 4.4.8.
