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BL20K SERIES REV E 2013
2.5
Installation Considerations
This device relies on the proper flow of air to provide internal cooling. Failure to provide this will cause
intermittent shut down of the unit due to overheating and will affect the long term reliability. Air is taken
into to the unit through “grills” in the front and side of the unit. A distance of at least 6 inches must be
maintained between the front intake and any obstruction. Likewise, the heated air is exhausted through
grills in the rear panel. A distance of four inches is required between the rear panel and any obstruction
to prevent “back pressure” from severely reducing air flow.
This device is intended for use in a relatively clean environment . For this reason, air filters are not
provided on the intakes. If air filtering is desired, it may be added at the expense of reduced air flow.
This may result in some required de-rating of the output power available from this unit.
An additional “stud” has been included on the rear panel of this device. This point may be used for a
protective earth connection to the chassis. This is also a convenient tie point for a “bonding”
conductor or other chassis grounding arrangement. Refer to figure 2-4 below.
Figure 2-4
Summary of Contents for BL20000 Series
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