Installation
Avtron Outdoor Resistive Load Bank • Part Number K975A 994213
3-2
Do not install the Load Bank in any area where standing water can pool or accumulate. Do not
install near: a drainage basin, surface/ground or roof runoff, sewer collection, or any location where
water can back up or collect. If flooding can occur, we recommend a different location or raised
platform sufficiently above high water level. Do not operate if any portion of the Load Bank is
submerged. Always install above grade.
The Load Bank should be mounted outdoors in a free field. A prerequisite to approval of site
location is to read the next section titled AIRFLOW CONSIDERATIONS. If the installation
dictates mounting in close proximity to any external or adjacent device, transformer, generator set,
building, structure or protuberance, follow these guidelines:
1. Position the Load Bank with a minimum of 36 inches of clearance on both sides. This is in
line with the airflow to allow access for service (Figure 3-1).
2. The inlet requires a free unobstructed hemispherical zone. The radius of this sphere must be
at least 6 feet. Refer to Figure 3-1. If a unit is backed into a corner, the 6 feet is no longer
sufficient. Consult Avtron Engineering to review prior to installation. The intake must not
ingest heated air from another source. The maximum ambient intake air temperature is
120F.
3. Provide a minimum of 8 feet from any obstruction for exhaust clearance to prevent air
restrictions and to limit air recirculation. For thermal considerations, provide a minimum
clearance of 30 feet from any temperature sensitive object. The heated exhaust air stream
will damage temperature sensitive items if they are positioned within the 30 foot clearance
area. Refer to Figure 3-1.
4. Load Banks mounted into a channel, trough, hollow, well, pit, or exhausting into a full wall
or corner require special considerations even if the above conditions are met. In these cases,
provide detailed site layout drawings to Avtron for inspection and comments.
5. Locations which have full or partial perimeter fence necessitate a review. The fencing
material should have at least 75% open area. The 36" minimum side clearances shown in
Figure 3-1 still apply. Clearance on intake and exhaust can be adjusted only after approval
by an authorized Avtron representative. Painted or plated metal chain link fence is the
preferred material. All nonmetallic fencing materials are not recommended.
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