Gree GMV-224WM/B-X Owner's Manual page 11

3.2.1.4 Space dimension for four-module unit
Air Outlet
＞1000
3.2.2 When there is wall (or similar obstruction) above the unit, keep the distance
between the unit top and the wall at least 300mm or above. When the unit is located
in a totally open space with no obstructions in four directions, keep the distance
between the unit top and wall at least 1500mm or above (See Fig.7). When space
is limited within 1500mm or the unit is not set in an open space, air return pipe is
required to be installed in order to keep good ventilation (See Fig.8).
Air Outlet
Fig.7
＞200 ＞200
＞200 ＞200
Fig.6
8
D.C. Inverter Multi-variable Modular
＞200
＞1000
＞200
Electrical Box
Outlet on this side
Crown wall
When the distance is less than
1500mm, connect an air duct
so as to keep good ventilation.
Fig.8