Mitsubishi Electric MSZ-LN-VG Series Service Manual page 13

2-4. CHOOSING THE OUTDOOR UNIT INSTALLATION LOCATION
OK
OK
2-5. MINIMUM INSTALLATION AREA
If you unavoidably install a unit in a space where all four sides are blocked or there are depressions, confirm that one of
these situations (A, B or C) is satisfied.
Note: These countermeasures are for keeping safety not for specification guarantee.
A) Secure sufficient installation space (minimum installation area Amin).
Install in a space with an installation area of Amin or more, corresponding to refrigerant quantity M (factory-charged
refrigerant + locally added refrigerant).
M [kg]
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
B) Install in a space with a depression height of 0.125 [m] or less.
Height from the bottom of
0.125 [m] or less
OBH790D
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Amin [m²]
12
17
23
28
34
39
45
50
56
62
67
73
78
84
R32 is heavier than air—as well as other refrigerants—
so tends to accumulate at the base (in the vicinity of the
floor). If R32 accumulates around base, it may reach a
flammable concentration in case room is small. To avoid
ignition, maintaining a safe work environment is required
by ensuring appropriate ventilation. If a refrigerant leak is
confirmed in a room or an area where there is insufficient
ventilation, refrain from using of flames until the work
environment can be improved by ensuring appropriate
ventilation.
Install outdoor units in a place where at least one of the
four sides is open, and in a sufficiently large space with-
out depressions.
Amin
Height from the bottom of
0.125 [m] or less
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