Gree GMV-VQ280WM/C-X Owner's Manual page 22

(4) If the unit is installed in the space with four walls, wall height at both side of the unit shall
have no limit; wall height at return air side is below 500mm and at the front side is below
1,500mm.
(5) If the wall exceeds the above value, increase the space as follows.
(6) If there is an obstacle above the unit, install the unit as follows.
In principle, the top of the unit is required to be more than 3000 mm from the top wall. If the space
around the front, back, left and right sides of the unit is open space, the top of the unit is required to
be 1500mm or more from the top wall, as shown in the fig. as below. If the size is less than 1500mm,
or if the space around the unit is not open, you need to connect an exhaust duct for smooth ventilation,
as shown below.
GMV Heat Recovery DC Inverter VRF
Fig.3.2.7
Fig.3.2.8
18
Unit：mm
Unit：mm