Gree GMV-ND22PHS/B-T Owner's Manual page 17

Model
GMV-ND22～50PHS/B-T
GMV-ND56～80PHS/B-T
GMV-ND90～160PHS/B-T
(2) Installation of Air-out Duct
No.
1
2
3
4
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 4.4.4.
(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.
(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 chosen with considering the conditions of the building and
Multi Variable Air Conditioners Ducted Type Indoor Unit
Size of Air Outlet
A
195
195
195
Name
Hanger Rod
Return Air Duct
Canvas Duct
Return Air Inlet
B C
451 25
751 25
1151 25
Fig 4.4.3
No.
5
6
7
8
Fig 4.4.4
14
Unit: mm
Size of Air-return Opening
D E
264 660
264 960
264 1360
Name
Static Pressure Box
Filter
Main Supply Air Duct
Supply Air Outlet
F
29
29
29