10 AGZ 026B through 130B IOMM AGZ-5
Case 4, Open Screening Walls
Decorative screening walls are often used to help conceal a unit either on grade or on a rooftop.
These walls should be designed such that the combination of their open area and distance from
the unit do not require performance adjustment. It is assumed that the wall height is equal to or
less than the unit height when mounted on its base support. This is usually satisfactory for
concealment. If the wall height is greater than the unit height, see Case 5, Pit Installation.
The distance from the ends of the unit to the end walls should be sufficient for service, opening
control panel doors, and pulling evaporator tubes, as applicable.
If each side wall is a different distance from the unit, the distances can be averaged providing
either wall is not less than 8 feet (2.4 meters) from the unit. For example, do not average 4 feet
and 20 feet to equal 12 feet.
Figure 11, Open Screening Walls
Figure 12, Wall Free Area vs Distance
6
(1.8)
5
(2.0)
4
(1.2)
3
(0.9)
AGZ
075-130
4
(1.2)
3.5
(1.0)
3.0
(0.9)
2.5
(0.7)
AGZ
026-070
01020304050
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