Honeywell HVAC232 Series, Applications Manual

Page: 17 / 145

Application manual HVAC232/402 | Document 27-652 | Issue ENG06 | 2019-08-07 17
3.3 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* C D
MI1 .8 (20) .8 (20) 3.9 (100) 2 (50)
MI2 .8 (20) .8 (20) 3.9 (100) 2 (50)
MI3 .8 (20) .8 (20) 3.9 (100) 2 (50)
MI4 .8 (20) .8 (20) 3.9 (100) 3.9 (100)
MI5 .8 (20) .8 (20) 4.7 (120) 3.9 (100)
* Min clearance A and B for drives for MI1~MI3 can be 0 inches if the ambient temperature
is below 104 °F (40°C).
A = clearance around the freq. converter (see also B)
B = distance from one frequency converter to another or distance to
cabinet wall
C = free space above the frequency converter
D = free space underneath the frequency converter
B
C
B
A
D
A
Fig. 15. Installation space
NOTE:
See the mounting dimensions on the back of the drive.
Leave free space for cooling above (100 mm),below (50 mm), and on the
sides (20 mm) of HVAC232/402! (For MI1 - MI3, side-to-side installation
allowed only if the ambient temperature is below 104 °F (40 °C);
For MI4-MI5, side-to-side installation is not allowed.
Table 5. Required cooling air
Type Cooling air required in cfm (m³/h)
MI1 5.886 (10)
MI2 5.886 (10)
MI3 17.658 (30)
MI4 26.487 (45)
MI5 44.145 (75)