Honeywell SmartVFD HVAC2 Applications Manual page 15

Cooling
Enough free space shall be left above and below
the frequency converter to ensure sufficient air
circulation and cooling. You will find the required
dimensions for free space in the table below.
If several units are mounted above each other the
required free space equals C + D (see figure
below). Moreover, the outlet air used for cooling
by the lower unit must be directed away from the
air intake of the upper unit.
The amount of cooling air required is indicated
below. Also make sure that the temperature of the
cooling air does not exceed the maximum
ambient temperature of the converter.
Table 4. Min. clearances around AC drive
Min clearance in inches (mm)
Type A* B*
MI1 .8 (20) .8 (20)
MI2 .8 (20) .8 (20)
MI3 .8 (20) .8 (20)
C D
3.9 (100) 2 (50)
3.9 (100) 2 (50)
3.9 (100) 2 (50)
Table 4. Min. clearances around AC drive
Type A*
MI4 .8 (20)
MI5 .8 (20)
A
Fig. 15. Installation space
15
Min clearance in inches (mm)
B* C
.8 (20) 3.9 (100)
.8 (20) 4.7 (120)
C
B
A
D
D
3.9 (100)
3.9 (100)
B
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